补全包内容

app/src/main/java/me/next/tagclouddemo/MainActivity.java

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+package me.next.tagclouddemo;
+
+import android.os.Bundle;
+import android.support.v7.app.AppCompatActivity;
+import android.widget.Toast;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import me.next.tagview.TagCloudView;
+
+
+public class MainActivity extends AppCompatActivity implements TagCloudView.OnTagClickListener {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        TagCloudView tagCloudView = (TagCloudView) findViewById(R.id.tag_cloud_view);
+        List<String> tags = new ArrayList<>();
+        for (int i = 0; i < 20; i++) {
+            tags.add("标签" + i);
+        }
+        tagCloudView.setTags(tags);
+        tagCloudView.setOnTagClickListener(this);
+    }
+
+    @Override
+    public void onTagClick(int position) {
+        Toast.makeText(getApplicationContext(), "position : " + position,
+                Toast.LENGTH_SHORT).show();
+    }
+}

tagview/build.gradle

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+apply plugin: 'com.android.library'
+
+android {
+    compileSdkVersion 22
+    buildToolsVersion "23.0.0 rc3"
+
+    defaultConfig {
+        minSdkVersion 14
+        targetSdkVersion 22
+        versionCode 1
+        versionName "1.0"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+    compile fileTree(dir: 'libs', include: ['*.jar'])
+    compile 'com.android.support:appcompat-v7:22.2.1'
+}

tagview/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in /Users/NeXT/Library/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 *;
+#}

tagview/src/main/java/me/next/tagview/TagCloudView.java

@@ -0,0 +1,182 @@
+package me.next.tagview;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.graphics.Color;
+import android.util.AttributeSet;
+import android.util.TypedValue;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import java.util.List;
+
+/**
+ * Created by NeXT on 15-7-29.
+ */
+public class TagCloudView extends ViewGroup{
+
+    private static final String TAG = TagCloudView.class.getSimpleName();
+    private List<String> tags;
+
+    private LayoutInflater mInflater;
+    private OnTagClickListener onTagClickListener;
+
+    private int sizeWidth;
+    private int sizeHeight;
+
+    private float mTagSize;
+    private int mTagColor;
+    private int mBackground;
+    private int mViewBorder;
+    private int mTagBorderHor;
+    private int mTagBorderVer;
+
+    private static final int DEFAULT_TEXT_COLOR = Color.WHITE;
+    private static final int DEFAULT_TEXT_SIZE = 14;
+    private static final int DEFAULT_TEXT_BACKGROUND = R.drawable.tag_background;
+    private static final int DEFAULT_VIEW_BORDER = 6;
+    private static final int DEFAULT_TEXT_BORDER_HORIZONTAL = 5;
+    private static final int DEFAULT_TEXT_BORDER_VERTICAL = 5;
+
+    public TagCloudView(Context context) {
+        this(context, null);
+    }
+
+    public TagCloudView(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public TagCloudView(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+
+        mInflater = LayoutInflater.from(context);
+
+        TypedArray a = context.getTheme().obtainStyledAttributes(
+                attrs,
+                R.styleable.TagCloudView,
+                defStyleAttr,
+                defStyleAttr
+        );
+
+        mTagSize = a.getDimension(R.styleable.TagCloudView_tcvTextSize, DEFAULT_TEXT_SIZE);
+        mTagColor = a.getColor(R.styleable.TagCloudView_tcvTextColor, DEFAULT_TEXT_COLOR);
+        mBackground = a.getResourceId(R.styleable.TagCloudView_tcvBackground, DEFAULT_TEXT_BACKGROUND);
+        mViewBorder = a.getDimensionPixelSize(R.styleable.TagCloudView_tcvBorder, DEFAULT_VIEW_BORDER);
+        mTagBorderHor = a.getDimensionPixelSize(
+                R.styleable.TagCloudView_tcvItemBorderHorizontal, DEFAULT_TEXT_BORDER_HORIZONTAL);
+        mTagBorderVer = a.getDimensionPixelSize(
+                R.styleable.TagCloudView_tcvItemBorderVertical, DEFAULT_TEXT_BORDER_VERTICAL);
+
+        a.recycle();
+    }
+
+    @Override
+    protected void onLayout(boolean changed, int l, int t, int r, int b) {
+    }
+
+    /**
+     * 计算 ChildView 宽高
+     * @param widthMeasureSpec
+     * @param heightMeasureSpec
+     */
+    @Override
+    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        /**
+         * 计算 ViewGroup 上级容器为其推荐的宽高
+         */
+        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
+        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
+        sizeWidth = MeasureSpec.getSize(widthMeasureSpec);
+        sizeHeight = MeasureSpec.getSize(heightMeasureSpec);
+
+        //计算 childView 宽高
+        measureChildren(widthMeasureSpec, heightMeasureSpec);
+
+        int childWidth;
+        int childHeight;
+//        int marginLeft = 5;
+//        int marginTop = 8;
+        int totalWidth = 0;
+        int totalHeight = mTagBorderVer;
+        for (int i = 0; i < getChildCount(); i++) {
+            View child = getChildAt(i);
+            childWidth = child.getMeasuredWidth();
+            childHeight = child.getMeasuredHeight();
+
+            totalWidth += childWidth + mViewBorder;
+
+            if (i == 0) {
+                totalHeight = childHeight + mViewBorder;
+            }
+            // + marginLeft 保证最右侧与 ViewGroup 右边距有边界
+            if (totalWidth + mTagBorderHor > sizeWidth) {
+                totalWidth = mViewBorder;
+                totalHeight += childHeight + mTagBorderVer;
+                child.layout(
+                        totalWidth + mTagBorderHor,
+                        totalHeight - childHeight,
+                        totalWidth + childWidth + mTagBorderHor,
+                        totalHeight);
+                totalWidth += childWidth;
+            } else {
+                child.layout(
+                        totalWidth - childWidth + mTagBorderHor,
+                        totalHeight - childHeight,
+                        totalWidth + mTagBorderHor,
+                        totalHeight);
+            }
+        }
+        totalHeight += mViewBorder;
+
+        /**
+         * 高度根据设置改变
+         * 如果为 MATCH_PARENT 则充满父窗体，否则根据内容自定义高度
+         */
+        setMeasuredDimension(
+                sizeWidth,
+                (heightMode == MeasureSpec.EXACTLY ? sizeHeight : totalHeight));
+
+    }
+
+    @Override
+    public LayoutParams generateLayoutParams(AttributeSet attrs) {
+        return super.generateLayoutParams(attrs);
+    }
+
+    public void setTags(List<String> tagList) {
+        this.tags = tagList;
+        if (tags != null && tags.size() > 0) {
+            for (int i = 0; i < tags.size(); i++) {
+                TextView tagView = (TextView) mInflater.inflate(R.layout.item_tag, null);
+                tagView.setBackgroundResource(mBackground);
+                tagView.setTextSize(TypedValue.COMPLEX_UNIT_SP, mTagSize);
+                tagView.setTextColor(mTagColor);
+                LayoutParams layoutParams = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
+                tagView.setLayoutParams(layoutParams);
+                tagView.setText(tags.get(i));
+                final int finalI = i;
+                tagView.setOnClickListener(new OnClickListener() {
+                    @Override
+                    public void onClick(View v) {
+                        if (onTagClickListener != null) {
+                            onTagClickListener.onTagClick(finalI);
+                        }
+                    }
+                });
+                addView(tagView);
+            }
+        }
+        postInvalidate();
+    }
+
+    public void setOnTagClickListener(OnTagClickListener onTagClickListener) {
+        this.onTagClickListener = onTagClickListener;
+    }
+
+    public interface OnTagClickListener{
+        void onTagClick(int position);
+    }
+
+}

tagview/src/main/res/drawable/tag_background.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item android:state_pressed="true">
+        <shape>
+            <corners android:radius="100dp"/>
+            <solid android:color="#FF9800" />
+        </shape>
+    </item>
+
+    <item android:state_pressed="false">
+        <shape>
+            <corners android:radius="100dp"/>
+            <solid android:color="#f9c813" />
+        </shape>
+    </item>
+
+</selector>

tagview/src/main/res/layout/item_tag.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<TextView xmlns:android="http://schemas.android.com/apk/res/android"
+          xmlns:tools="http://schemas.android.com/tools"
+          android:id="@+id/tag"
+          android:layout_width="wrap_content"
+          android:layout_height="wrap_content"
+          android:paddingTop="2dp"
+          android:paddingBottom="2dp"
+          android:paddingLeft="6dp"
+          android:paddingRight="6dp"
+          tools:text="哈哈哈"
+          android:textColor="#FFFFFF"
+          android:background="@drawable/tag_background"/>

tagview/src/main/res/menu/menu_main.xml

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+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+      xmlns:app="http://schemas.android.com/apk/res-auto"
+      xmlns:tools="http://schemas.android.com/tools"
+      tools:context=".MainActivity">
+    <item android:id="@+id/action_settings"
+          android:title="@string/action_settings"
+          android:orderInCategory="100"
+          app:showAsAction="never"/>
+</menu>

tagview/src/main/res/values-w820dp/dimens.xml

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+<resources>
+    <!-- Example customization of dimensions originally defined in res/values/dimens.xml
+         (such as screen margins) for screens with more than 820dp of available width. This
+         would include 7" and 10" devices in landscape (~960dp and ~1280dp respectively). -->
+    <dimen name="activity_horizontal_margin">64dp</dimen>
+</resources>

tagview/src/main/res/values/dimens.xml

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+<resources>
+    <!-- Default screen margins, per the Android Design guidelines. -->
+    <dimen name="activity_horizontal_margin">16dp</dimen>
+    <dimen name="activity_vertical_margin">16dp</dimen>
+</resources>

tagview/src/main/res/values/strings.xml

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+<resources>
+    <string name="app_name">TagView</string>
+
+    <string name="hello_world">Hello world!</string>
+    <string name="action_settings">Settings</string>
+</resources>