Feature: Dynamic layout inflater

2017-08-18 01:14:56 +08:00 · 2017-08-18 01:14:56 +08:00 · c92754b73a
commit c92754b73a
parent 437879248c
21 changed files with 1496 additions and 4 deletions
--- a/NeoModule/src/main/java/io/neomodule/NeoModule.java
+++ b/NeoModule/src/main/java/io/neomodule/NeoModule.java
@ -0,0 +1,9 @@
+package io.neomodule;
+
+/**
+ * @author kiva
+ */
+
+public abstract class NeoModule {
+    public abstract void launch();
+}
--- a/NeoModule/src/main/java/io/neomodule/layout/Configuration.java
+++ b/NeoModule/src/main/java/io/neomodule/layout/Configuration.java
@ -0,0 +1,280 @@
+package io.neomodule.layout;
+
+import android.graphics.Typeface;
+import android.os.Build;
+import android.text.InputType;
+import android.text.TextUtils;
+import android.util.TypedValue;
+import android.view.Gravity;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.EditText;
+import android.widget.ImageView;
+import android.widget.LinearLayout;
+import android.widget.RelativeLayout;
+import android.widget.TextView;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import io.neomodule.layout.abs.ImageLoader;
+import io.neomodule.layout.abs.ViewAttributeRunnable;
+import io.neomodule.layout.utils.AttributeParser;
+import io.neomodule.layout.utils.DimensionConverter;
+
+/**
+ * @author kiva
+ */
+
+public class Configuration {
+    public final int noLayoutRule = -999;
+    public final String[] viewCorners = {"TopLeft", "TopRight", "BottomRight", "BottomLeft"};
+
+    public Map<String, ViewAttributeRunnable> viewRunnables;
+    public ImageLoader imageLoader = null;
+
+    Configuration() {
+    }
+
+    void createViewRunnablesIfNeeded() {
+        if (viewRunnables != null) {
+            return;
+        }
+        viewRunnables = new HashMap<>(30);
+        viewRunnables.put("scaleType", new ViewAttributeRunnable() {
+            @Override
+            public void apply(View view, String value, ViewGroup parent, Map<String, String> attrs) {
+                if (view instanceof ImageView) {
+                    ImageView.ScaleType scaleType = ((ImageView) view).getScaleType();
+                    switch (value.toLowerCase()) {
+                        case "center":
+                            scaleType = ImageView.ScaleType.CENTER;
+                            break;
+                        case "center_crop":
+                            scaleType = ImageView.ScaleType.CENTER_CROP;
+                            break;
+                        case "center_inside":
+                            scaleType = ImageView.ScaleType.CENTER_INSIDE;
+                            break;
+                        case "fit_center":
+                            scaleType = ImageView.ScaleType.FIT_CENTER;
+                            break;
+                        case "fit_end":
+                            scaleType = ImageView.ScaleType.FIT_END;
+                            break;
+                        case "fit_start":
+                            scaleType = ImageView.ScaleType.FIT_START;
+                            break;
+                        case "fit_xy":
+                            scaleType = ImageView.ScaleType.FIT_XY;
+                            break;
+                        case "matrix":
+                            scaleType = ImageView.ScaleType.MATRIX;
+                            break;
+                    }
+                    ((ImageView) view).setScaleType(scaleType);
+                }
+            }
+        });
+        viewRunnables.put("orientation", new ViewAttributeRunnable() {
+            @Override
+            public void apply(View view, String value, ViewGroup parent, Map<String, String> attrs) {
+                if (view instanceof LinearLayout) {
+                    ((LinearLayout) view).setOrientation(value.equals("vertical") ? LinearLayout.VERTICAL : LinearLayout.HORIZONTAL);
+                }
+            }
+        });
+        viewRunnables.put("text", new ViewAttributeRunnable() {
+            @Override
+            public void apply(View view, String value, ViewGroup parent, Map<String, String> attrs) {
+                if (view instanceof TextView) {
+                    ((TextView) view).setText(value);
+                }
+            }
+        });
+        viewRunnables.put("textSize", new ViewAttributeRunnable() {
+            @Override
+            public void apply(View view, String value, ViewGroup parent, Map<String, String> attrs) {
+                if (view instanceof TextView) {
+                    ((TextView) view).setTextSize(TypedValue.COMPLEX_UNIT_PX, DimensionConverter.toDimension(value, view.getResources().getDisplayMetrics()));
+                }
+            }
+        });
+        viewRunnables.put("textColor", new ViewAttributeRunnable() {
+            @Override
+            public void apply(View view, String value, ViewGroup parent, Map<String, String> attrs) {
+                if (view instanceof TextView) {
+                    ((TextView) view).setTextColor(AttributeParser.parseColor(view, value));
+                }
+            }
+        });
+        viewRunnables.put("textStyle", new ViewAttributeRunnable() {
+            @Override
+            public void apply(View view, String value, ViewGroup parent, Map<String, String> attrs) {
+                if (view instanceof TextView) {
+                    int typeFace = Typeface.NORMAL;
+                    if (value.contains("bold")) typeFace |= Typeface.BOLD;
+                    else if (value.contains("italic")) typeFace |= Typeface.ITALIC;
+                    ((TextView) view).setTypeface(null, typeFace);
+                }
+            }
+        });
+        viewRunnables.put("textAlignment", new ViewAttributeRunnable() {
+            @Override
+            public void apply(View view, String value, ViewGroup parent, Map<String, String> attrs) {
+                if (Build.VERSION.SDK_INT > Build.VERSION_CODES.KITKAT) {
+                    int alignment = View.TEXT_ALIGNMENT_TEXT_START;
+                    switch (value) {
+                        case "center":
+                            alignment = View.TEXT_ALIGNMENT_CENTER;
+                            break;
+                        case "left":
+                        case "textStart":
+                            break;
+                        case "right":
+                        case "textEnd":
+                            alignment = View.TEXT_ALIGNMENT_TEXT_END;
+                            break;
+                    }
+                    view.setTextAlignment(alignment);
+                } else {
+                    int gravity = Gravity.LEFT;
+                    switch (value) {
+                        case "center":
+                            gravity = Gravity.CENTER;
+                            break;
+                        case "left":
+                        case "textStart":
+                            break;
+                        case "right":
+                        case "textEnd":
+                            gravity = Gravity.RIGHT;
+                            break;
+                    }
+                    ((TextView) view).setGravity(gravity);
+                }
+            }
+        });
+        viewRunnables.put("ellipsize", new ViewAttributeRunnable() {
+            @Override
+            public void apply(View view, String value, ViewGroup parent, Map<String, String> attrs) {
+                if (view instanceof TextView) {
+                    TextUtils.TruncateAt where = TextUtils.TruncateAt.END;
+                    switch (value) {
+                        case "start":
+                            where = TextUtils.TruncateAt.START;
+                            break;
+                        case "middle":
+                            where = TextUtils.TruncateAt.MIDDLE;
+                            break;
+                        case "marquee":
+                            where = TextUtils.TruncateAt.MARQUEE;
+                            break;
+                        case "end":
+                            break;
+                    }
+                    ((TextView) view).setEllipsize(where);
+                }
+            }
+        });
+        viewRunnables.put("singleLine", new ViewAttributeRunnable() {
+            @Override
+            public void apply(View view, String value, ViewGroup parent, Map<String, String> attrs) {
+                if (view instanceof TextView) {
+                    ((TextView) view).setSingleLine();
+                }
+            }
+        });
+        viewRunnables.put("hint", new ViewAttributeRunnable() {
+            @Override
+            public void apply(View view, String value, ViewGroup parent, Map<String, String> attrs) {
+                if (view instanceof EditText) {
+                    ((EditText) view).setHint(value);
+                }
+            }
+        });
+        viewRunnables.put("inputType", new ViewAttributeRunnable() {
+            @Override
+            public void apply(View view, String value, ViewGroup parent, Map<String, String> attrs) {
+                if (view instanceof TextView) {
+                    int inputType = 0;
+                    switch (value) {
+                        case "textEmailAddress":
+                            inputType |= InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS;
+                            break;
+                        case "number":
+                            inputType |= InputType.TYPE_CLASS_NUMBER;
+                            break;
+                        case "phone":
+                            inputType |= InputType.TYPE_CLASS_PHONE;
+                            break;
+                    }
+                    if (inputType > 0) ((TextView) view).setInputType(inputType);
+                }
+            }
+        });
+        viewRunnables.put("gravity", new ViewAttributeRunnable() {
+            @Override
+            public void apply(View view, String value, ViewGroup parent, Map<String, String> attrs) {
+                int gravity = AttributeParser.parseGravity(value);
+                if (view instanceof TextView) {
+                    ((TextView) view).setGravity(gravity);
+                } else if (view instanceof LinearLayout) {
+                    ((LinearLayout) view).setGravity(gravity);
+                } else if (view instanceof RelativeLayout) {
+                    ((RelativeLayout) view).setGravity(gravity);
+                }
+            }
+        });
+        viewRunnables.put("src", new ViewAttributeRunnable() {
+            @Override
+            public void apply(View view, String value, ViewGroup parent, Map<String, String> attrs) {
+                if (view instanceof ImageView) {
+                    String imageName = value;
+                    if (imageName.startsWith("//")) imageName = "http:" + imageName;
+                    if (imageName.startsWith("http")) {
+                        if (imageLoader != null) {
+                            if (attrs.containsKey("cornerRadius")) {
+                                int radius = DimensionConverter.toDimensionPixelSize(attrs.get("cornerRadius"), view.getResources().getDisplayMetrics());
+                                imageLoader.loadRoundedImage((ImageView) view, imageName, radius);
+                            } else {
+                                imageLoader.loadImage((ImageView) view, imageName);
+                            }
+                        }
+                    } else if (imageName.startsWith("@drawable/")) {
+                        imageName = imageName.substring("@drawable/".length());
+                        ((ImageView) view).setImageDrawable(AttributeParser.getDrawableByName(view, imageName));
+                    }
+                }
+            }
+        });
+        viewRunnables.put("visibility", new ViewAttributeRunnable() {
+            @Override
+            public void apply(View view, String value, ViewGroup parent, Map<String, String> attrs) {
+                int visibility = View.VISIBLE;
+                String visValue = value.toLowerCase();
+                if (visValue.equals("gone")) visibility = View.GONE;
+                else if (visValue.equals("invisible")) visibility = View.INVISIBLE;
+                view.setVisibility(visibility);
+            }
+        });
+        viewRunnables.put("clickable", new ViewAttributeRunnable() {
+            @Override
+            public void apply(View view, String value, ViewGroup parent, Map<String, String> attrs) {
+                view.setClickable(value.equals("true"));
+            }
+        });
+        viewRunnables.put("tag", new ViewAttributeRunnable() {
+            @Override
+            public void apply(View view, String value, ViewGroup parent, Map<String, String> attrs) {
+                throw new IllegalStateException("You cannot set tag in this situation, because we have other purpose.");
+            }
+        });
+        viewRunnables.put("onClick", new ViewAttributeRunnable() {
+            @Override
+            public void apply(View view, String value, ViewGroup parent, Map<String, String> attrs) {
+                view.setOnClickListener(AttributeParser.parseOnClick(parent, value));
+            }
+        });
+    }
+}
--- a/NeoModule/src/main/java/io/neomodule/layout/LayoutInfo.java
+++ b/NeoModule/src/main/java/io/neomodule/layout/LayoutInfo.java
@ -0,0 +1,15 @@
+package io.neomodule.layout;
+
+import android.graphics.drawable.GradientDrawable;
+
+import java.util.HashMap;
+
+public class LayoutInfo {
+    public HashMap<String, Integer> nameToIdNumber;
+    public Object delegate;
+    public GradientDrawable backgroundDrawable;
+
+    public LayoutInfo() {
+        nameToIdNumber = new HashMap<>();
+    }
+}
--- a/NeoModule/src/main/java/io/neomodule/layout/NeoLayoutInflater.java
+++ b/NeoModule/src/main/java/io/neomodule/layout/NeoLayoutInflater.java
@ -0,0 +1,235 @@
+package io.neomodule.layout;
+
+import android.content.Context;
+import android.support.annotation.Nullable;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import org.w3c.dom.Document;
+import org.w3c.dom.NamedNodeMap;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+import org.xml.sax.SAXException;
+
+import java.io.ByteArrayInputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+import java.util.HashMap;
+import java.util.Map;
+
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
+
+import io.neomodule.layout.abs.ImageLoader;
+import io.neomodule.layout.utils.AttributeApply;
+import io.neomodule.layout.utils.UniqueId;
+
+public class NeoLayoutInflater {
+    private static Configuration CONFIG = new Configuration();
+
+    public static void setImageLoader(ImageLoader il) {
+        CONFIG.imageLoader = il;
+    }
+
+    public static void setDelegate(View root, Object delegate) {
+        LayoutInfo info;
+        if (root.getTag() == null || !(root.getTag() instanceof LayoutInfo)) {
+            info = new LayoutInfo();
+            root.setTag(info);
+        } else {
+            info = (LayoutInfo) root.getTag();
+        }
+        info.delegate = delegate;
+    }
+
+    @Nullable
+    public static View inflateName(Context context, String name) {
+        return inflateName(context, name, null);
+    }
+
+    @Nullable
+    public static View inflateName(Context context, String name, ViewGroup parent) {
+        if (name.startsWith("<")) {
+            // Assume it's XML
+            return NeoLayoutInflater.inflate(context, name, parent);
+        } else {
+            File savedFile = context.getFileStreamPath(name + ".xml");
+            try {
+                InputStream fileStream = new FileInputStream(savedFile);
+                return NeoLayoutInflater.inflate(context, fileStream, parent);
+            } catch (FileNotFoundException e) {
+            }
+
+            try {
+                InputStream assetStream = context.getAssets().open(name + ".xml");
+                return NeoLayoutInflater.inflate(context, assetStream, parent);
+            } catch (IOException e) {
+            }
+            int id = context.getResources().getIdentifier(name, "layout", context.getPackageName());
+            if (id > 0) {
+                LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+                return inflater.inflate(id, parent, false);
+            }
+        }
+        return null;
+    }
+
+    @Nullable
+    public static View inflate(Context context, File xmlPath) {
+        InputStream inputStream = null;
+        try {
+            inputStream = new FileInputStream(xmlPath);
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+            return null;
+        }
+        return NeoLayoutInflater.inflate(context, inputStream);
+    }
+
+    @Nullable
+    public static View inflate(Context context, String xml) {
+        InputStream inputStream = new ByteArrayInputStream(xml.getBytes());
+        return NeoLayoutInflater.inflate(context, inputStream);
+    }
+
+    @Nullable
+    public static View inflate(Context context, String xml, ViewGroup parent) {
+        InputStream inputStream = new ByteArrayInputStream(xml.getBytes());
+        return NeoLayoutInflater.inflate(context, inputStream, parent);
+    }
+
+    @Nullable
+    public static View inflate(Context context, InputStream inputStream) {
+        return inflate(context, inputStream, null);
+    }
+
+    @Nullable
+    public static View inflate(Context context, InputStream inputStream, ViewGroup parent) {
+        try {
+            DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
+            dbf.setNamespaceAware(true);
+            DocumentBuilder db = dbf.newDocumentBuilder();
+            Document document = db.parse(inputStream);
+            try {
+                return inflate(context, document.getDocumentElement(), parent);
+            } finally {
+                inputStream.close();
+            }
+        } catch (IOException | ParserConfigurationException | SAXException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    @SuppressWarnings("unchecked")
+    @Nullable
+    public static <T extends View> T findViewById(View view, String id) {
+        int idNum = UniqueId.idFromString(view, id);
+        if (idNum == 0) return null;
+        return (T) view.findViewById(idNum);
+    }
+
+    @Nullable
+    private static View inflate(Context context, Node node) {
+        return inflate(context, node, null);
+    }
+
+    @Nullable
+    private static View inflate(Context context, Node node, ViewGroup parent) {
+        View mainView = constructView(context, node.getNodeName());
+        if (parent != null)
+            parent.addView(mainView); // have to add to parent to enable certain layout attrs
+        applyAttributes(mainView, getAttributesMap(node), parent);
+        if (mainView instanceof ViewGroup && node.hasChildNodes()) {
+            parseChildren(context, node, (ViewGroup) mainView);
+        }
+        return mainView;
+    }
+
+    /**
+     * 遍历节点里的每一个字节点，并解析成 View
+     *
+     * @param context  Context
+     * @param node     节点
+     * @param mainView 父视图
+     */
+    private static void parseChildren(Context context, Node node, ViewGroup mainView) {
+        NodeList nodeList = node.getChildNodes();
+        for (int i = 0; i < nodeList.getLength(); i++) {
+            Node currentNode = nodeList.item(i);
+            if (currentNode.getNodeType() != Node.ELEMENT_NODE) continue;
+            inflate(context, currentNode, mainView); // this recursively can call parseChildren
+        }
+    }
+
+    /**
+     * 创建 xml 里定义的节点名的 View
+     * 如果节点名里没有带包名，就默认创建 android.widget 包下的实例，如 EditText, TextView
+     * 如果节点名里带了包名，就创建对应的实例，如 com.xxx.view.SomeView
+     *
+     * @param context Context
+     * @param name    xml里的节点名
+     * @return 对应的 View
+     */
+    private static View constructView(Context context, String name) {
+        try {
+            if (!name.contains(".")) {
+                name = "android.widget." + name;
+            }
+            Class<?> clazz = Class.forName(name);
+            Constructor<?> constructor = clazz.getConstructor(Context.class);
+
+            return (View) constructor.newInstance(context);
+        } catch (ClassNotFoundException
+                | NoSuchMethodException
+                | InstantiationException
+                | InvocationTargetException
+                | IllegalAccessException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    /**
+     * 得到一个节点下所有的 xml 属性
+     *
+     * @param currentNode 节点
+     * @return 属性的名字和值
+     */
+    private static HashMap<String, String> getAttributesMap(Node currentNode) {
+        NamedNodeMap attributeMap = currentNode.getAttributes();
+        int attributeCount = attributeMap.getLength();
+        HashMap<String, String> attributes = new HashMap<>(attributeCount);
+
+        for (int i = 0; i < attributeCount; i++) {
+            Node attr = attributeMap.item(i);
+            String nodeName = attr.getNodeName();
+
+            // 跳过头部的 namespace
+            if (nodeName.startsWith("android:")) {
+                nodeName = nodeName.substring(8);
+            }
+            attributes.put(nodeName, attr.getNodeValue());
+        }
+        return attributes;
+    }
+
+    /**
+     * 对一个 View 设置属性
+     *
+     * @param view   需要设置属性的view
+     * @param attrs  所有属性
+     * @param parent view的父视图
+     */
+    private static void applyAttributes(View view, Map<String, String> attrs, ViewGroup parent) {
+        CONFIG.createViewRunnablesIfNeeded();
+        new AttributeApply(view, attrs, parent).apply(CONFIG);
+    }
+}
--- a/NeoModule/src/main/java/io/neomodule/layout/abs/ImageLoader.java
+++ b/NeoModule/src/main/java/io/neomodule/layout/abs/ImageLoader.java
@ -0,0 +1,9 @@
+package io.neomodule.layout.abs;
+
+import android.widget.ImageView;
+
+public interface ImageLoader {
+    void loadImage(ImageView view, String url);
+
+    void loadRoundedImage(ImageView view, String url, int radius);
+}
--- a/NeoModule/src/main/java/io/neomodule/layout/abs/ViewAttributeRunnable.java
+++ b/NeoModule/src/main/java/io/neomodule/layout/abs/ViewAttributeRunnable.java
@ -0,0 +1,10 @@
+package io.neomodule.layout.abs;
+
+import android.view.View;
+import android.view.ViewGroup;
+
+import java.util.Map;
+
+public interface ViewAttributeRunnable {
+    void apply(View view, String value, ViewGroup parent, Map<String, String> attrs);
+}
--- a/NeoModule/src/main/java/io/neomodule/layout/listener/OnClickForwarder.java
+++ b/NeoModule/src/main/java/io/neomodule/layout/listener/OnClickForwarder.java
@ -0,0 +1,97 @@
+package io.neomodule.layout.listener;
+
+import android.util.Log;
+import android.view.View;
+import android.view.ViewGroup;
+
+import org.json.JSONArray;
+import org.json.JSONException;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+import io.neomodule.layout.LayoutInfo;
+
+/**
+ * @author kiva
+ */
+
+public class OnClickForwarder implements View.OnClickListener {
+    private ViewGroup parent;
+    private String methodName;
+
+    public OnClickForwarder(ViewGroup parent, String methodName) {
+        this.parent = parent;
+        this.methodName = methodName;
+    }
+
+    @Override
+    public void onClick(View view) {
+        ViewGroup root = parent;
+        LayoutInfo info = null;
+        while (root != null && (root.getParent() instanceof ViewGroup)) {
+            if (root.getTag() != null && root.getTag() instanceof LayoutInfo) {
+                info = (LayoutInfo) root.getTag();
+                if (info.delegate != null) break;
+            }
+            root = (ViewGroup) root.getParent();
+        }
+        if (info != null && info.delegate != null) {
+            final Object delegate = info.delegate;
+            invokeMethod(delegate, methodName, false, view);
+        } else {
+            Log.e("DynamicLayoutInflater", "Unable to find valid delegate for click named " + methodName);
+        }
+    }
+
+    private void invokeMethod(Object delegate, final String methodName, boolean withView, View view) {
+        Object[] args = null;
+        String finalMethod = methodName;
+        if (methodName.endsWith(")")) {
+            String[] parts = methodName.split("[(]", 2);
+            finalMethod = parts[0];
+            try {
+                String argText = parts[1].replace("&quot;", "\"");
+                JSONArray arr = new JSONArray("[" + argText.substring(0, argText.length() - 1) + "]");
+                args = new Object[arr.length()];
+                for (int i = 0; i < arr.length(); i++) {
+                    args[i] = arr.get(i);
+                }
+            } catch (JSONException e) {
+                e.printStackTrace();
+            }
+        } else if (withView) {
+            args = new Object[1];
+            args[0] = view;
+        }
+        Class<?> klass = delegate.getClass();
+        try {
+
+            Class<?>[] argClasses = null;
+            if (args != null && args.length > 0) {
+                argClasses = new Class[args.length];
+                if (withView) {
+                    argClasses[0] = View.class;
+                } else {
+                    for (int i = 0; i < args.length; i++) {
+                        Class<?> argClass = args[i].getClass();
+                        if (argClass == Integer.class)
+                            argClass = int.class; // Nobody uses Integer...
+                        argClasses[i] = argClass;
+                    }
+                }
+            }
+            Method method = klass.getMethod(finalMethod, argClasses);
+            method.invoke(delegate, args);
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        } catch (InvocationTargetException e) {
+            e.printStackTrace();
+        } catch (NoSuchMethodException e) {
+            e.printStackTrace();
+            if (!withView && !methodName.endsWith(")")) {
+                invokeMethod(delegate, methodName, true, view);
+            }
+        }
+    }
+}
--- a/NeoModule/src/main/java/io/neomodule/layout/utils/AttributeApply.java
+++ b/NeoModule/src/main/java/io/neomodule/layout/utils/AttributeApply.java
@ -0,0 +1,504 @@
+package io.neomodule.layout.utils;
+
+import android.graphics.drawable.GradientDrawable;
+import android.graphics.drawable.StateListDrawable;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+import android.widget.FrameLayout;
+import android.widget.LinearLayout;
+import android.widget.RelativeLayout;
+
+import java.util.Map;
+
+import io.neomodule.layout.Configuration;
+import io.neomodule.layout.LayoutInfo;
+
+/**
+ * @author kiva
+ */
+
+public class AttributeApply {
+    /**
+     * 存储处理中的状态
+     */
+    private static class Status {
+        int layoutRule;
+        int marginLeft = 0;
+        int marginRight = 0;
+        int marginTop = 0;
+        int marginBottom = 0;
+        int paddingLeft = 0;
+        int paddingRight = 0;
+        int paddingTop = 0;
+        int paddingBottom = 0;
+        boolean hasCornerRadius = false;
+        boolean hasCornerRadii = false;
+        boolean layoutTarget = false;
+
+        Status(Configuration config) {
+            this.layoutRule = config.noLayoutRule;
+        }
+    }
+
+    private View view;
+    private Map<String, String> attrs;
+    private ViewGroup parent;
+
+    public AttributeApply(View view, Map<String, String> attrs, ViewGroup parent) {
+        this.view = view;
+        this.attrs = attrs;
+        this.parent = parent;
+    }
+
+    /**
+     * 把xml里定义的属性设置到 View 中
+     *
+     * @param config LayoutInflater的配置
+     */
+    public void apply(Configuration config) {
+        Status status = new Status(config);
+        ViewGroup.LayoutParams layoutParams = view.getLayoutParams();
+
+        for (Map.Entry<String, String> entry : attrs.entrySet()) {
+            String attr = entry.getKey();
+            // 如果存在预设的处理方式，我们就不管了
+            if (config.viewRunnables.containsKey(attr)) {
+                config.viewRunnables.get(attr).apply(view, entry.getValue(), parent, attrs);
+                continue;
+            }
+
+            if (attr.startsWith("cornerRadius")) {
+                status.hasCornerRadius = true;
+                status.hasCornerRadii = !attr.equals("cornerRadius");
+                continue;
+            }
+
+            applyAttribute(attr, entry, layoutParams, status);
+
+            if (status.layoutRule != config.noLayoutRule && parent instanceof RelativeLayout) {
+                if (status.layoutTarget) {
+                    int anchor = UniqueId.idFromString(parent, AttributeParser.parseId(entry.getValue()));
+                    ((RelativeLayout.LayoutParams) layoutParams).addRule(status.layoutRule, anchor);
+                } else if (entry.getValue().equals("true")) {
+                    ((RelativeLayout.LayoutParams) layoutParams).addRule(status.layoutRule);
+                }
+            }
+        }
+
+        // 处理 View 的背景
+        if (attrs.containsKey("background") || attrs.containsKey("borderColor")) {
+            String backgroundValue = attrs.containsKey("background") ? attrs.get("background") : null;
+
+            // 如果直接从 drawable 中拿那就简单多了
+            if (backgroundValue != null && backgroundValue.startsWith("@drawable/")) {
+                applyBackgroundDrawable(backgroundValue);
+
+            } else if (backgroundValue == null
+                    || backgroundValue.startsWith("#")
+                    || backgroundValue.startsWith("@color")) {
+                applyBackgroundColor(config, status, backgroundValue);
+            }
+        }
+
+        applyParsedMargin(status, layoutParams);
+        applyParsedPadding(status);
+        view.setLayoutParams(layoutParams);
+    }
+
+    /**
+     * 解析每一个属性
+     *
+     * @param attr         属性名
+     * @param entry        属性的名和值
+     * @param layoutParams 父视图的 LayoutParams
+     * @param status       处理状态
+     */
+    private void applyAttribute(String attr, Map.Entry<String, String> entry,
+                                ViewGroup.LayoutParams layoutParams, Status status) {
+        if (attr.startsWith("layout_margin")) {
+            applyLayoutMargin(attr, entry, status);
+            return;
+        }
+
+        if (attr.startsWith("padding")) {
+            applyPadding(attr, entry, status);
+            return;
+        }
+
+        switch (attr) {
+            case "id":
+                applyId(entry);
+                break;
+            case "width":
+            case "layout_width":
+                applyLayoutWidth(layoutParams, entry);
+                break;
+            case "height":
+            case "layout_height":
+                applyLayoutHeight(layoutParams, entry);
+                break;
+            case "layout_gravity":
+                applyGravity(layoutParams, entry);
+                break;
+            case "layout_weight":
+                applyLayoutWeight(layoutParams, entry);
+                break;
+            case "layout_below":
+                status.layoutRule = RelativeLayout.BELOW;
+                status.layoutTarget = true;
+                break;
+            case "layout_above":
+                status.layoutRule = RelativeLayout.ABOVE;
+                status.layoutTarget = true;
+                break;
+            case "layout_toLeftOf":
+                status.layoutRule = RelativeLayout.LEFT_OF;
+                status.layoutTarget = true;
+                break;
+            case "layout_toRightOf":
+                status.layoutRule = RelativeLayout.RIGHT_OF;
+                status.layoutTarget = true;
+                break;
+            case "layout_alignBottom":
+                status.layoutRule = RelativeLayout.ALIGN_BOTTOM;
+                status.layoutTarget = true;
+                break;
+            case "layout_alignTop":
+                status.layoutRule = RelativeLayout.ALIGN_TOP;
+                status.layoutTarget = true;
+                break;
+            case "layout_alignLeft":
+            case "layout_alignStart":
+                status.layoutRule = RelativeLayout.ALIGN_LEFT;
+                status.layoutTarget = true;
+                break;
+            case "layout_alignRight":
+            case "layout_alignEnd":
+                status.layoutRule = RelativeLayout.ALIGN_RIGHT;
+                status.layoutTarget = true;
+                break;
+            case "layout_alignParentBottom":
+                status.layoutRule = RelativeLayout.ALIGN_PARENT_BOTTOM;
+                break;
+            case "layout_alignParentTop":
+                status.layoutRule = RelativeLayout.ALIGN_PARENT_TOP;
+                break;
+            case "layout_alignParentLeft":
+            case "layout_alignParentStart":
+                status.layoutRule = RelativeLayout.ALIGN_PARENT_LEFT;
+                break;
+            case "layout_alignParentRight":
+            case "layout_alignParentEnd":
+                status.layoutRule = RelativeLayout.ALIGN_PARENT_RIGHT;
+                break;
+            case "layout_centerHorizontal":
+                status.layoutRule = RelativeLayout.CENTER_HORIZONTAL;
+                break;
+            case "layout_centerVertical":
+                status.layoutRule = RelativeLayout.CENTER_VERTICAL;
+                break;
+            case "layout_centerInParent":
+                status.layoutRule = RelativeLayout.CENTER_IN_PARENT;
+                break;
+        }
+    }
+
+    /**
+     * 从 status 中读取处理完毕的 padding 系列值，并且应用到 View 上
+     *
+     * @param status 处理状态
+     */
+    private void applyParsedPadding(Status status) {
+        view.setPadding(status.paddingLeft, status.paddingTop, status.paddingRight, status.paddingBottom);
+    }
+
+    /**
+     * 从 status 中读取处理完毕的 layout_margin 系列值，并且应用到 View 上
+     *
+     * @param status       处理状态
+     * @param layoutParams 父视图的 LayoutParams
+     */
+    private void applyParsedMargin(Status status, ViewGroup.LayoutParams layoutParams) {
+        if (layoutParams instanceof ViewGroup.MarginLayoutParams) {
+            ((ViewGroup.MarginLayoutParams) layoutParams).setMargins(status.marginLeft,
+                    status.marginTop,
+                    status.marginRight,
+                    status.marginBottom);
+        }
+    }
+
+    /**
+     * 从当前 app 的 drawable 中得到背景并设置到 View 上
+     *
+     * @param drawableResourceName 资源在 drawable 下的名字
+     */
+    private void applyBackgroundDrawable(String drawableResourceName) {
+        view.setBackground(AttributeParser.getDrawableByName(view, drawableResourceName));
+    }
+
+    /**
+     * 解析一个 # 开头的颜色值或从当前app 的 R.color 下取得颜色应用于 View 的背景颜色
+     *
+     * @param config     LayoutInflater 配置
+     * @param status     处理状态
+     * @param colorValue # 或者 @color/ 开头的颜色值
+     */
+    private void applyBackgroundColor(Configuration config, Status status, String colorValue) {
+        int validatedColor = AttributeParser.parseColor(view, colorValue == null ? "#00000000" : colorValue);
+
+        if (view instanceof Button || attrs.containsKey("pressedColor")) {
+            // 按钮有按下效果，所以我们视为同一种情况
+            applyPressedColor(config, status, validatedColor);
+
+        } else if (status.hasCornerRadius || attrs.containsKey("borderColor")) {
+            GradientDrawable gd = new GradientDrawable();
+            gd.setColor(validatedColor);
+
+            // 把 pressed 和正常视为同一种情况
+            applyCorners(config, status, gd, gd);
+            applyBorderColor(gd, gd);
+
+            view.setBackground(gd);
+            getLayoutInfo().backgroundDrawable = gd;
+
+        } else {
+            view.setBackgroundColor(validatedColor);
+        }
+    }
+
+    /**
+     * 处理 pressedColor 或者 Button 的背景色
+     * @param config LayoutInflater 配置
+     * @param status 出炉状态
+     * @param colorValue 颜色值
+     */
+    private void applyPressedColor(Configuration config, Status status, int colorValue) {
+        int pressedColor;
+
+        if (attrs.containsKey("pressedColor")) {
+            pressedColor = AttributeParser.parseColor(view, attrs.get("pressedColor"));
+        } else {
+            pressedColor = AttributeParser.adjustBrightness(colorValue, 0.9f);
+        }
+
+        GradientDrawable gd = new GradientDrawable();
+        gd.setColor(colorValue);
+        GradientDrawable pressedGd = new GradientDrawable();
+        pressedGd.setColor(pressedColor);
+
+        applyCorners(config, status, gd, pressedGd);
+        applyBorderColor(gd, pressedGd);
+
+        StateListDrawable selector = new StateListDrawable();
+        selector.addState(new int[]{android.R.attr.state_pressed}, pressedGd);
+        selector.addState(new int[]{}, gd);
+        view.setBackground(selector);
+
+        getLayoutInfo().backgroundDrawable = gd;
+    }
+
+    /**
+     * 处理 borderColor
+     * @param gd 背景
+     * @param pressedGd 按下时的背景，如果没有，设置为 gd 即可
+     */
+    private void applyBorderColor(GradientDrawable gd, GradientDrawable pressedGd) {
+        if (attrs.containsKey("borderColor")) {
+            String borderWidth = "1dp";
+            if (attrs.containsKey("borderWidth")) {
+                borderWidth = attrs.get("borderWidth");
+            }
+            int borderWidthPx = DimensionConverter.toDimensionPixelSize(borderWidth, view.getResources().getDisplayMetrics());
+            gd.setStroke(borderWidthPx, AttributeParser.parseColor(view, attrs.get("borderColor")));
+            pressedGd.setStroke(borderWidthPx, AttributeParser.parseColor(view, attrs.get("borderColor")));
+        }
+    }
+
+    /**
+     * 处理 cornerRadius 或者 cornerRadiusXXX
+     * @param config LayoutInflater 配置
+     * @param status 出炉状态
+     * @param gd 背景
+     * @param pressedGd 按下背景，如果没有，设置为 gd 即可
+     */
+    private void applyCorners(Configuration config, Status status, GradientDrawable gd, GradientDrawable pressedGd) {
+        if (status.hasCornerRadii) {
+            float radii[] = new float[8];
+            for (int i = 0; i < config.viewCorners.length; i++) {
+                String corner = config.viewCorners[i];
+                if (attrs.containsKey("cornerRadius" + corner)) {
+                    radii[i * 2] = radii[i * 2 + 1] = DimensionConverter.toDimension(attrs.get("cornerRadius" + corner), view.getResources().getDisplayMetrics());
+                }
+                gd.setCornerRadii(radii);
+                pressedGd.setCornerRadii(radii);
+            }
+
+        } else if (status.hasCornerRadius) {
+            float cornerRadius = DimensionConverter.toDimension(attrs.get("cornerRadius"), view.getResources().getDisplayMetrics());
+            gd.setCornerRadius(cornerRadius);
+            pressedGd.setCornerRadius(cornerRadius);
+        }
+    }
+
+    /**
+     * 设置 xml 属性中的 padding 系列属性，如 padding="10dp", paddingLeft="16dp"
+     *
+     * @param attr   属性名，需要判断是 padding 还是 paddingXXX
+     * @param entry  属性值
+     * @param status 处理状态
+     */
+    private void applyPadding(String attr, Map.Entry<String, String> entry, Status status) {
+        switch (attr) {
+            case "padding":
+                status.paddingBottom = status.paddingLeft = status.paddingRight = status.paddingTop
+                        = DimensionConverter.toDimensionPixelSize(entry.getValue(),
+                        view.getResources().getDisplayMetrics());
+                break;
+            case "paddingLeft":
+                status.paddingLeft = DimensionConverter.toDimensionPixelSize(entry.getValue(),
+                        view.getResources().getDisplayMetrics());
+                break;
+            case "paddingTop":
+                status.paddingTop = DimensionConverter.toDimensionPixelSize(entry.getValue(),
+                        view.getResources().getDisplayMetrics());
+                break;
+            case "paddingRight":
+                status.paddingRight = DimensionConverter.toDimensionPixelSize(entry.getValue(),
+                        view.getResources().getDisplayMetrics());
+                break;
+            case "paddingBottom":
+                status.paddingBottom = DimensionConverter.toDimensionPixelSize(entry.getValue(),
+                        view.getResources().getDisplayMetrics());
+                break;
+
+        }
+    }
+
+    /**
+     * 设置 xml 属性中的 layout_margin 系列属性，如 layout_margin="10dp", layout_marginRight="16dp"
+     *
+     * @param attr   属性名，需要判断是 layout_margin 还是 layout_marginXXX
+     * @param entry  属性值
+     * @param status 处理状态
+     */
+    private void applyLayoutMargin(String attr, Map.Entry<String, String> entry, Status status) {
+        switch (attr) {
+            case "layout_margin":
+                status.marginLeft = status.marginRight = status.marginTop = status.marginBottom
+                        = DimensionConverter.toDimensionPixelSize(entry.getValue(),
+                        view.getResources().getDisplayMetrics());
+                break;
+            case "layout_marginLeft":
+                status.marginLeft = DimensionConverter.toDimensionPixelSize(entry.getValue(),
+                        view.getResources().getDisplayMetrics(), parent, true);
+                break;
+            case "layout_marginTop":
+                status.marginTop = DimensionConverter.toDimensionPixelSize(entry.getValue(),
+                        view.getResources().getDisplayMetrics(), parent, false);
+                break;
+            case "layout_marginRight":
+                status.marginRight = DimensionConverter.toDimensionPixelSize(entry.getValue(),
+                        view.getResources().getDisplayMetrics(), parent, true);
+                break;
+            case "layout_marginBottom":
+                status.marginBottom = DimensionConverter.toDimensionPixelSize(entry.getValue(),
+                        view.getResources().getDisplayMetrics(), parent, false);
+                break;
+        }
+    }
+
+    /**
+     * 设置 layout_weight
+     *
+     * @param layoutParams 父视图的 LayoutParams
+     * @param entry        属性值
+     */
+    private void applyLayoutWeight(ViewGroup.LayoutParams layoutParams, Map.Entry<String, String> entry) {
+        if (parent != null && parent instanceof LinearLayout) {
+            ((LinearLayout.LayoutParams) layoutParams).weight = Float.parseFloat(entry.getValue());
+        }
+    }
+
+    /**
+     * 设置 gravity
+     *
+     * @param layoutParams 父视图的 LayoutParams
+     * @param entry        属性值
+     */
+    private void applyGravity(ViewGroup.LayoutParams layoutParams, Map.Entry<String, String> entry) {
+        if (parent != null && parent instanceof LinearLayout) {
+            ((LinearLayout.LayoutParams) layoutParams).gravity = AttributeParser.parseGravity(entry.getValue());
+        } else if (parent != null && parent instanceof FrameLayout) {
+            ((FrameLayout.LayoutParams) layoutParams).gravity = AttributeParser.parseGravity(entry.getValue());
+        }
+    }
+
+    /**
+     * 设置 layout_height
+     *
+     * @param layoutParams 父视图的 LayoutParams
+     * @param entry        属性值
+     */
+    private void applyLayoutHeight(ViewGroup.LayoutParams layoutParams, Map.Entry<String, String> entry) {
+        switch (entry.getValue()) {
+            case "wrap_content":
+                layoutParams.height = ViewGroup.LayoutParams.WRAP_CONTENT;
+                break;
+            case "fill_parent":
+            case "match_parent":
+                layoutParams.height = ViewGroup.LayoutParams.MATCH_PARENT;
+                break;
+            default:
+                layoutParams.height = DimensionConverter.toDimensionPixelSize(entry.getValue(), view.getResources().getDisplayMetrics(), parent, false);
+                break;
+        }
+    }
+
+    /**
+     * 设置 layout_width
+     *
+     * @param layoutParams 父视图的 LayoutParams
+     * @param entry        属性值
+     */
+    private void applyLayoutWidth(ViewGroup.LayoutParams layoutParams, Map.Entry<String, String> entry) {
+        switch (entry.getValue()) {
+            case "wrap_content":
+                layoutParams.width = ViewGroup.LayoutParams.WRAP_CONTENT;
+                break;
+            case "fill_parent":
+            case "match_parent":
+                layoutParams.width = ViewGroup.LayoutParams.MATCH_PARENT;
+                break;
+            default:
+                layoutParams.width = DimensionConverter.toDimensionPixelSize(entry.getValue(), view.getResources().getDisplayMetrics(), parent, true);
+                break;
+        }
+    }
+
+    /**
+     * 设置 id
+     *
+     * @param entry 属性值
+     */
+    private void applyId(Map.Entry<String, String> entry) {
+        String idString = AttributeParser.parseId(entry.getValue());
+        if (parent != null) {
+            LayoutInfo info = getLayoutInfo();
+            int newId = UniqueId.newId();
+            view.setId(newId);
+            info.nameToIdNumber.put(idString, newId);
+        }
+    }
+
+    private LayoutInfo getLayoutInfo() {
+        LayoutInfo info;
+        if (parent.getTag() != null && parent.getTag() instanceof LayoutInfo) {
+            info = (LayoutInfo) parent.getTag();
+        } else {
+            info = new LayoutInfo();
+            parent.setTag(info);
+        }
+        return info;
+    }
+}
--- a/NeoModule/src/main/java/io/neomodule/layout/utils/AttributeParser.java
+++ b/NeoModule/src/main/java/io/neomodule/layout/utils/AttributeParser.java
@ -0,0 +1,89 @@
+package io.neomodule.layout.utils;
+
+import android.content.res.Resources;
+import android.graphics.Color;
+import android.graphics.drawable.Drawable;
+import android.view.Gravity;
+import android.view.View;
+import android.view.ViewGroup;
+
+import io.neomodule.layout.listener.OnClickForwarder;
+
+/**
+ * @author kiva
+ */
+
+public class AttributeParser {
+    public static int adjustBrightness(int color, float amount) {
+        int red = color & 0xFF0000 >> 16;
+        int green = color & 0x00FF00 >> 8;
+        int blue = color & 0x0000FF;
+        int result = (int) (blue * amount);
+        result += (int) (green * amount) << 8;
+        result += (int) (red * amount) << 16;
+        return result;
+    }
+
+    public static String parseId(String value) {
+        if (value.startsWith("@+id/")) {
+            return value.substring(5);
+        } else if (value.startsWith("@id/")) {
+            return value.substring(4);
+        }
+        return value;
+    }
+
+    public static int parseGravity(String value) {
+        int gravity = Gravity.NO_GRAVITY;
+        String[] parts = value.toLowerCase().split("[|]");
+        for (String part : parts) {
+            switch (part) {
+                case "center":
+                    gravity = gravity | Gravity.CENTER;
+                    break;
+                case "left":
+                case "textStart":
+                    gravity = gravity | Gravity.LEFT;
+                    break;
+                case "right":
+                case "textEnd":
+                    gravity = gravity | Gravity.RIGHT;
+                    break;
+                case "top":
+                    gravity = gravity | Gravity.TOP;
+                    break;
+                case "bottom":
+                    gravity = gravity | Gravity.BOTTOM;
+                    break;
+                case "center_horizontal":
+                    gravity = gravity | Gravity.CENTER_HORIZONTAL;
+                    break;
+                case "center_vertical":
+                    gravity = gravity | Gravity.CENTER_VERTICAL;
+                    break;
+            }
+        }
+        return gravity;
+    }
+
+    public static Drawable getDrawableByName(View view, String name) {
+        Resources resources = view.getResources();
+        return resources.getDrawable(resources.getIdentifier(name, "drawable",
+                view.getContext().getPackageName()));
+    }
+
+    public static int parseColor(View view, String text) {
+        if (text.startsWith("@color/")) {
+            Resources resources = view.getResources();
+            return resources.getColor(resources.getIdentifier(text.substring("@color/".length()), "color", view.getContext().getPackageName()));
+        }
+        if (text.length() == 4 && text.startsWith("#")) {
+            text = "#" + text.charAt(1) + text.charAt(1) + text.charAt(2) + text.charAt(2) + text.charAt(3) + text.charAt(3);
+        }
+        return Color.parseColor(text);
+    }
+
+    public static View.OnClickListener parseOnClick(ViewGroup parent, String methodName) {
+        return new OnClickForwarder(parent, methodName);
+    }
+}
--- a/NeoModule/src/main/java/io/neomodule/layout/utils/DimensionConverter.java
+++ b/NeoModule/src/main/java/io/neomodule/layout/utils/DimensionConverter.java
@ -0,0 +1,104 @@
+package io.neomodule.layout.utils;
+
+import android.util.DisplayMetrics;
+import android.util.Log;
+import android.util.TypedValue;
+import android.view.ViewGroup;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+public class DimensionConverter {
+    private static Map<String, Float> cached = new HashMap<>();
+
+    // -- Initialize dimension string to constant lookup.
+    private static final Map<String, Integer> dimensionConstantLookup = initDimensionConstantLookup();
+
+    private static Map<String, Integer> initDimensionConstantLookup() {
+        Map<String, Integer> m = new HashMap<>();
+        m.put("px", TypedValue.COMPLEX_UNIT_PX);
+        m.put("dip", TypedValue.COMPLEX_UNIT_DIP);
+        m.put("dp", TypedValue.COMPLEX_UNIT_DIP);
+        m.put("sp", TypedValue.COMPLEX_UNIT_SP);
+        m.put("pt", TypedValue.COMPLEX_UNIT_PT);
+        m.put("in", TypedValue.COMPLEX_UNIT_IN);
+        m.put("mm", TypedValue.COMPLEX_UNIT_MM);
+        return Collections.unmodifiableMap(m);
+    }
+
+    // -- Initialize pattern for dimension string.
+    private static final Pattern DIMENSION_PATTERN = Pattern.compile("^\\s*(\\d+(\\.\\d+)*)\\s*([a-zA-Z]+)\\s*$");
+
+    public static int toDimensionPixelSize(String dimension, DisplayMetrics metrics, ViewGroup parent, boolean horizontal) {
+        if (dimension.endsWith("%")) {
+            float pct = Float.parseFloat(dimension.substring(0, dimension.length() - 1)) / 100.0f;
+            return (int) (pct * (horizontal ? parent.getMeasuredWidth() : parent.getMeasuredHeight()));
+        }
+        return toDimensionPixelSize(dimension, metrics);
+    }
+
+    public static int toDimensionPixelSize(String dimension, DisplayMetrics metrics) {
+        // -- Mimics TypedValue.complexToDimensionPixelSize(int data, DisplayMetrics metrics).
+        final float f;
+        if (cached.containsKey(dimension)) {
+            f = cached.get(dimension);
+        } else {
+            InternalDimension internalDimension = toInternalDimension(dimension);
+            final float value = internalDimension.value;
+            f = TypedValue.applyDimension(internalDimension.unit, value, metrics);
+            cached.put(dimension, f);
+        }
+        final int res = (int) (f + 0.5f);
+        if (res != 0) return res;
+        if (f == 0) return 0;
+        if (f > 0) return 1;
+        return -1;
+    }
+
+    public static float toDimension(String dimension, DisplayMetrics metrics) {
+        if (cached.containsKey(dimension)) return cached.get(dimension);
+        // -- Mimics TypedValue.complexToDimension(int data, DisplayMetrics metrics).
+        InternalDimension internalDimension = toInternalDimension(dimension);
+        float val = TypedValue.applyDimension(internalDimension.unit, internalDimension.value, metrics);
+        cached.put(dimension, val);
+        return val;
+    }
+
+    private static InternalDimension toInternalDimension(String dimension) {
+        // -- Match target against pattern.
+        Matcher matcher = DIMENSION_PATTERN.matcher(dimension);
+        if (matcher.matches()) {
+            // -- Match found.
+            // -- Extract value.
+            float value = Float.valueOf(matcher.group(1));
+            // -- Extract dimension units.
+            String unit = matcher.group(3).toLowerCase();
+            // -- Get Android dimension constant.
+            Integer dimensionUnit = dimensionConstantLookup.get(unit);
+            if (dimensionUnit == null) {
+                // -- Invalid format.
+                throw new NumberFormatException();
+            } else {
+                // -- Return valid dimension.
+                return new InternalDimension(value, dimensionUnit);
+            }
+        } else {
+            Log.e("DimensionConverter", "Invalid number format: " + dimension);
+            // -- Invalid format.
+            throw new NumberFormatException();
+        }
+    }
+
+    private static class InternalDimension {
+        float value;
+        int unit;
+
+        InternalDimension(float value, int unit) {
+            this.value = value;
+            this.unit = unit;
+        }
+    }
+}
--- a/NeoModule/src/main/java/io/neomodule/layout/utils/UniqueId.java
+++ b/NeoModule/src/main/java/io/neomodule/layout/utils/UniqueId.java
@ -0,0 +1,34 @@
+package io.neomodule.layout.utils;
+
+import android.view.View;
+import android.view.ViewGroup;
+
+import io.neomodule.layout.LayoutInfo;
+
+/**
+ * @author kiva
+ */
+
+public class UniqueId {
+    private static int ID = 52019;
+
+    public static int newId() {
+        return ID++;
+    }
+
+    public static int idFromString(View view, String id) {
+        if (!(view instanceof ViewGroup)) return 0;
+        Object tag = view.getTag();
+        if (!(tag instanceof LayoutInfo)) return 0; // not inflated by this class
+        LayoutInfo info = (LayoutInfo) view.getTag();
+        if (!info.nameToIdNumber.containsKey(id)) {
+            ViewGroup grp = (ViewGroup) view;
+            for (int i = 0; i < grp.getChildCount(); i++) {
+                int val = idFromString(grp.getChildAt(i), id);
+                if (val != 0) return val;
+            }
+            return 0;
+        }
+        return info.nameToIdNumber.get(id);
+    }
+}
--- a/app/build.gradle
+++ b/app/build.gradle
@ -8,8 +8,8 @@ android {
        applicationId "io.neoterm"
        minSdkVersion 21
        targetSdkVersion 26
-        versionCode 24
-        versionName "1.2.2"
+        versionCode 25
+        versionName "1.2.3"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        resConfigs "zh-rCN", "zh-rTW"
        externalNativeBuild {
--- a/build.gradle
+++ b/build.gradle
@ -1,7 +1,7 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.

 buildscript {
-    ext.kotlin_version = '1.1.3-2'
+    ext.kotlin_version = '1.1.4'
    repositories {
        maven { url 'https://dl.google.com/dl/android/maven2/' }
        jcenter()
--- a/neomodule/.gitignore
+++ b/neomodule/.gitignore
@ -0,0 +1 @@
+/build
--- a/neomodule/build.gradle
+++ b/neomodule/build.gradle
@ -0,0 +1,32 @@
+apply plugin: 'com.android.library'
+
+android {
+    compileSdkVersion 26
+    buildToolsVersion "26.0.1"
+
+
+    defaultConfig {
+        minSdkVersion 21
+        targetSdkVersion 26
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+
+    implementation 'com.android.support:appcompat-v7:26.0.1'
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'com.android.support.test:runner:1.0.0'
+    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.0'
+}
--- a/neomodule/proguard-rules.pro
+++ b/neomodule/proguard-rules.pro
@ -0,0 +1,25 @@
+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in /Users/kiva/devel/android-sdk/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the proguardFiles
+# directive in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
--- a/neomodule/src/androidTest/java/io/neomodule/ExampleInstrumentedTest.java
+++ b/neomodule/src/androidTest/java/io/neomodule/ExampleInstrumentedTest.java
@ -0,0 +1,26 @@
+package io.neomodule;
+
+import android.content.Context;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() throws Exception {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getTargetContext();
+
+        assertEquals("io.neomodule.test", appContext.getPackageName());
+    }
+}
--- a/neomodule/src/main/AndroidManifest.xml
+++ b/neomodule/src/main/AndroidManifest.xml
@ -0,0 +1,2 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="io.neomodule" />
--- a/neomodule/src/main/res/values/strings.xml
+++ b/neomodule/src/main/res/values/strings.xml
@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">NeoModule</string>
+</resources>
--- a/neomodule/src/test/java/io/neomodule/ExampleUnitTest.java
+++ b/neomodule/src/test/java/io/neomodule/ExampleUnitTest.java
@ -0,0 +1,17 @@
+package io.neomodule;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() throws Exception {
+        assertEquals(4, 2 + 2);
+    }
+}
--- a/settings.gradle
+++ b/settings.gradle
@ -1 +1 @@
-include ':app', ':chrome-tabs', ':NeoLang'
+include ':app', ':chrome-tabs', ':NeoLang', ':NeoModule'