开始编写例子

app/build.gradle

@@ -1,36 +1,41 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 'Google Inc.:Google APIs:23'
+  compileSdkVersion 'Google Inc.:Google APIs:23'
-    buildToolsVersion "23.0.2"
+  buildToolsVersion "23.0.2"
 
-    defaultConfig {
+  defaultConfig {
-        applicationId "com.example.arial.downloaddemo"
+    applicationId "com.arialyy.simple"
-        minSdkVersion 15
+    minSdkVersion 15
-        targetSdkVersion 23
+    targetSdkVersion 23
-        versionCode 1
+    versionCode 1
-        versionName "1.0"
+    versionName "1.0"
-    }
+  }
-    buildTypes {
+  buildTypes {
-        release {
+    release {
-            minifyEnabled false
+      minifyEnabled false
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+      proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
-        }
     }
+  }
 
-    dataBinding {
+  dataBinding {
-        enabled = true
+    enabled = true
-    }
+  }
+
+  packagingOptions {
+    exclude 'META-INF/services/javax.annotation.processing.Processor'
+  }
 }
 
 dependencies {
-    compile fileTree(include: ['*.jar'], dir: 'libs')
+  compile fileTree(include: ['*.jar'], dir: 'libs')
-    testCompile 'junit:junit:4.12'
+  testCompile 'junit:junit:4.12'
-    compile 'com.android.support:appcompat-v7:23.+'
+  compile 'com.android.support:appcompat-v7:23.+'
-    compile 'com.android.support:design:23.+'
+  compile 'com.android.support:design:23.+'
-    compile 'com.jakewharton:butterknife:7.0.1'
+  compile 'com.jakewharton:butterknife:7.0.1'
-    compile 'com.google.code.gson:gson:2.7'
+  compile 'com.google.code.gson:gson:2.7'
-    compile 'com.squareup.okhttp3:okhttp:3.2.0'
+  compile 'com.squareup.okhttp3:okhttp:3.2.0'
-    compile 'com.arialyy.frame:MVVM2:2.2.0'
+  compile 'com.arialyy.frame:MVVM2:2.2.0'
-    compile project(':downloadutil')
+  compile 'com.arialyy.absadapter:AbsAdapter:1.1.2'
+  compile project(':downloadutil')
 }

app/src/androidTest/java/com/example/arial/downloaddemo/ApplicationTest.java

@@ -7,7 +7,7 @@ import android.test.ApplicationTestCase;
  * <a href="http://d.android.com/tools/testing/testing_android.html">Testing Fundamentals</a>
  */
 public class ApplicationTest extends ApplicationTestCase<Application> {
-    public ApplicationTest() {
+  public ApplicationTest() {
-        super(Application.class);
+    super(Application.class);
-    }
+  }
 }

app/src/main/AndroidManifest.xml

@@ -1,25 +1,28 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.example.arial.downloaddemo" >
+    package="com.arialyy.simple">
-    <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
-    <uses-permission android:name="android.permission.INTERNET" />
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
-    <application
-        android:allowBackup="true"
-        android:icon="@mipmap/ic_launcher"
-        android:label="@string/app_name"
-        android:supportsRtl="true"
-        android:theme="@style/AppTheme" >
-        <activity
-            android:name=".MainActivity"
-            android:label="@string/app_name"
-            android:theme="@style/AppTheme.NoActionBar" >
-            <intent-filter>
-                <action android:name="android.intent.action.MAIN" />
 
-                <category android:name="android.intent.category.LAUNCHER" />
+  <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
-            </intent-filter>
+  <uses-permission android:name="android.permission.INTERNET"/>
-        </activity>
+  <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
-    </application>
+
+  <application
+      android:name=".base.BaseApplication"
+      android:allowBackup="true"
+      android:icon="@mipmap/ic_launcher"
+      android:label="@string/app_name"
+      android:supportsRtl="true"
+      android:theme="@style/AppTheme">
+    <activity
+        android:name=".activity.SimpleTestActivity"
+        android:label="@string/app_name"
+        android:theme="@style/AppTheme.NoActionBar">
+      <intent-filter>
+        <action android:name="android.intent.action.MAIN"/>
+
+        <category android:name="android.intent.category.LAUNCHER"/>
+      </intent-filter>
+    </activity>
+  </application>
 
 </manifest>

app/src/main/java/com/arialyy/simple/activity/MainActivity.java

@@ -0,0 +1,22 @@
+package com.arialyy.simple.activity;
+
+import android.support.v7.widget.RecyclerView;
+import butterknife.Bind;
+import com.arialyy.simple.R;
+import com.arialyy.simple.base.BaseActivity;
+import com.arialyy.simple.databinding.ActivityMainBinding;
+
+/**
+ * Created by Lyy on 2016/9/27.
+ */
+public class MainActivity extends BaseActivity<ActivityMainBinding> {
+  @Bind(R.id.list)
+  RecyclerView mList;
+
+  @Override protected int setLayoutId() {
+    return R.layout.activity_main;
+  }
+
+
+
+}

app/src/main/java/com/arialyy/simple/activity/SimpleTestActivity.java

@@ -1,23 +1,24 @@
-package com.example.arial.downloaddemo;
+package com.arialyy.simple.activity;
 
 import android.os.Bundle;
 import android.os.Environment;
 import android.os.Handler;
 import android.os.Message;
-import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.Toolbar;
 import android.view.View;
 import android.widget.Button;
 import android.widget.ProgressBar;
 import android.widget.TextView;
 import android.widget.Toast;
-
+import butterknife.Bind;
 import com.arialyy.downloadutil.util.DownLoadUtil;
 import com.arialyy.downloadutil.util.Util;
-
+import com.arialyy.simple.R;
+import com.arialyy.simple.base.BaseActivity;
+import com.arialyy.simple.databinding.ActivitySimpleBinding;
 import java.net.HttpURLConnection;
 
-public class MainActivity extends AppCompatActivity {
+public class SimpleTestActivity extends BaseActivity<ActivitySimpleBinding> {
   private static final int DOWNLOAD_PRE = 0x01;
   private static final int DOWNLOAD_STOP = 0x02;
   private static final int DOWNLOAD_FAILE = 0x03;
@@ -30,6 +31,7 @@ public class MainActivity extends AppCompatActivity {
   private DownLoadUtil mUtil;
   private Button mStart, mStop, mCancel;
   private TextView mSize;
+  @Bind(R.id.toolbar) Toolbar toolbar;
 
   private Handler mUpdateHandler = new Handler() {
     @Override public void handleMessage(Message msg) {
@@ -40,26 +42,26 @@ public class MainActivity extends AppCompatActivity {
           mStart.setEnabled(false);
           break;
         case DOWNLOAD_FAILE:
-          Toast.makeText(MainActivity.this, "下载失败", Toast.LENGTH_SHORT).show();
+          Toast.makeText(SimpleTestActivity.this, "下载失败", Toast.LENGTH_SHORT).show();
           break;
         case DOWNLOAD_STOP:
-          Toast.makeText(MainActivity.this, "暂停下载", Toast.LENGTH_SHORT).show();
+          Toast.makeText(SimpleTestActivity.this, "暂停下载", Toast.LENGTH_SHORT).show();
           mStart.setText("恢复");
           mStart.setEnabled(true);
           break;
         case DOWNLOAD_CANCEL:
           mPb.setProgress(0);
-          Toast.makeText(MainActivity.this, "取消下载", Toast.LENGTH_SHORT).show();
+          Toast.makeText(SimpleTestActivity.this, "取消下载", Toast.LENGTH_SHORT).show();
           mStart.setEnabled(true);
           mStart.setText("开始");
           break;
         case DOWNLOAD_RESUME:
-          Toast.makeText(MainActivity.this, "恢复下载，恢复位置 ==> " + Util.formatFileSize((Long) msg.obj),
+          Toast.makeText(SimpleTestActivity.this, "恢复下载，恢复位置 ==> " + Util.formatFileSize((Long) msg.obj),
               Toast.LENGTH_SHORT).show();
           mStart.setEnabled(false);
           break;
         case DOWNLOAD_COMPLETE:
-          Toast.makeText(MainActivity.this, "下载完成", Toast.LENGTH_SHORT).show();
+          Toast.makeText(SimpleTestActivity.this, "下载完成", Toast.LENGTH_SHORT).show();
           mStart.setEnabled(true);
           mCancel.setEnabled(false);
           mStop.setEnabled(false);
@@ -70,8 +72,16 @@ public class MainActivity extends AppCompatActivity {
 
   @Override protected void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
-    setContentView(R.layout.activity_main);
+
-    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
+    init();
+  }
+
+  @Override protected int setLayoutId() {
+    return R.layout.activity_simple;
+  }
+
+  @Override protected void init(Bundle savedInstanceState) {
+    super.init(savedInstanceState);
     setSupportActionBar(toolbar);
     init();
   }

app/src/main/java/com/arialyy/simple/adapter/DownloadAdapter.java

@@ -0,0 +1,72 @@
+package com.arialyy.simple.adapter;
+
+import android.content.Context;
+import android.util.SparseArray;
+import android.view.View;
+import android.widget.Button;
+import butterknife.Bind;
+import com.arialyy.absadapter.common.AbsHolder;
+import com.arialyy.absadapter.recycler_view.AbsRVAdapter;
+import com.arialyy.downloadutil.entity.DownloadEntity;
+import com.arialyy.simple.R;
+import com.arialyy.simple.widget.HorizontalProgressBarWithNumber;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Created by Lyy on 2016/9/27.
+ * 下载列表适配器
+ */
+public class DownloadAdapter extends AbsRVAdapter<DownloadEntity, DownloadAdapter.MyHolder> {
+  private static final String TAG = "DownloadAdapter";
+  private Map<String, Long> mProgress = new HashMap<>();
+  private SparseArray<String> mPositions = new SparseArray<>();
+
+  public DownloadAdapter(Context context, List<DownloadEntity> data) {
+    super(context, data);
+    int i = 0;
+    for (DownloadEntity entity : data) {
+      mProgress.put(entity.getDownloadUrl(), entity.getCurrentProgress());
+      mPositions.append(i, entity.getDownloadUrl());
+      i++;
+    }
+  }
+
+  @Override protected MyHolder getViewHolder(View convertView, int viewType) {
+    return new MyHolder(convertView);
+  }
+
+  @Override protected int setLayoutId(int type) {
+    return R.layout.item_download;
+  }
+
+  public synchronized void setProgress(String url, long currentPosition) {
+    mProgress.put(url, currentPosition);
+    notifyItemChanged(indexItem(url));
+  }
+
+  private int indexItem(String url) {
+    return mPositions.indexOfValue(url);
+  }
+
+  @Override protected void bindData(MyHolder holder, int position, DownloadEntity item) {
+    //holder.progress.setProgress(item.getCurrentProgress());
+    long size = item.getFileSize();
+    int current = 0;
+    if (size == 0){
+      current = 0;
+    }
+    current = (int) (mProgress.get(item.getDownloadUrl()) * 100 / item.getFileSize());
+    holder.progress.setProgress(current);
+  }
+
+  class MyHolder extends AbsHolder {
+    @Bind(R.id.progressBar) HorizontalProgressBarWithNumber progress;
+    @Bind(R.id.bt) Button bt;
+
+    public MyHolder(View itemView) {
+      super(itemView);
+    }
+  }
+}

app/src/main/java/com/arialyy/simple/base/BaseActivity.java

@@ -0,0 +1,18 @@
+package com.arialyy.simple.base;
+
+import android.databinding.ViewDataBinding;
+import android.os.Bundle;
+import com.arialyy.frame.core.AbsActivity;
+
+/**
+ * Created by Lyy on 2016/9/27.
+ */
+public abstract class BaseActivity<VB extends ViewDataBinding> extends AbsActivity<VB> {
+  @Override protected void dataCallback(int result, Object data) {
+
+  }
+
+  @Override protected void init(Bundle savedInstanceState) {
+    super.init(savedInstanceState);
+  }
+}

app/src/main/java/com/arialyy/simple/base/BaseApplication.java

@@ -0,0 +1,14 @@
+package com.arialyy.simple.base;
+
+import android.app.Application;
+import com.arialyy.frame.core.AbsFrame;
+
+/**
+ * Created by Lyy on 2016/9/27.
+ */
+public class BaseApplication extends Application {
+  @Override public void onCreate() {
+    super.onCreate();
+    AbsFrame.init(this);
+  }
+}

app/src/main/java/com/arialyy/simple/base/BaseModule.java

@@ -0,0 +1,13 @@
+package com.arialyy.simple.base;
+
+import android.content.Context;
+import com.arialyy.frame.module.AbsModule;
+
+/**
+ * Created by Lyy on 2016/9/27.
+ */
+public class BaseModule extends AbsModule{
+  public BaseModule(Context context) {
+    super(context);
+  }
+}

app/src/main/java/com/arialyy/simple/module/DownloadModule.java

@@ -0,0 +1,21 @@
+//package com.arialyy.simple.module;
+//
+//import android.content.Context;
+//import com.arialyy.downloadutil.entity.DownloadEntity;
+//import com.arialyy.simple.base.BaseModule;
+//import java.util.ArrayList;
+//import java.util.List;
+//
+///**
+// * Created by Lyy on 2016/9/27.
+// */
+//public class DownloadModule extends BaseModule{
+//  public DownloadModule(Context context) {
+//    super(context);
+//  }
+//
+//  public List<DownloadEntity> getDownloadData(){
+//    List<DownloadEntity> list = new ArrayList<>();
+//    DownloadEntity entity
+//  }
+//}

app/src/main/java/com/arialyy/simple/widget/HorizontalProgressBarWithNumber.java

@@ -0,0 +1,180 @@
+package com.arialyy.simple.widget;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.util.AttributeSet;
+import android.util.TypedValue;
+import android.widget.ProgressBar;
+import com.arialyy.simple.R;
+
+public class HorizontalProgressBarWithNumber extends ProgressBar {
+  private static final int DEFAULT_TEXT_SIZE = 10;
+  private static final int DEFAULT_TEXT_COLOR = 0XFFFC00D1;
+  private static final int DEFAULT_COLOR_UNREACHED_COLOR = 0xFFd3d6da;
+  private static final int DEFAULT_HEIGHT_REACHED_PROGRESS_BAR = 2;
+  private static final int DEFAULT_HEIGHT_UNREACHED_PROGRESS_BAR = 2;
+  private static final int DEFAULT_SIZE_TEXT_OFFSET = 10;
+  /**
+   * painter of all drawing things
+   */
+  protected Paint mPaint = new Paint();
+  /**
+   * color of progress number
+   */
+  protected int mTextColor = DEFAULT_TEXT_COLOR;
+  /**
+   * size of text (sp)
+   */
+  protected int mTextSize = sp2px(DEFAULT_TEXT_SIZE);
+  /**
+   * offset of draw progress
+   */
+  protected int mTextOffset = dp2px(DEFAULT_SIZE_TEXT_OFFSET);
+  /**
+   * height of reached progress bar
+   */
+  protected int mReachedProgressBarHeight = dp2px(DEFAULT_HEIGHT_REACHED_PROGRESS_BAR);
+  /**
+   * color of reached bar
+   */
+  protected int mReachedBarColor = DEFAULT_TEXT_COLOR;
+  /**
+   * color of unreached bar
+   */
+  protected int mUnReachedBarColor = DEFAULT_COLOR_UNREACHED_COLOR;
+  /**
+   * height of unreached progress bar
+   */
+  protected int mUnReachedProgressBarHeight = dp2px(DEFAULT_HEIGHT_UNREACHED_PROGRESS_BAR);
+  /**
+   * view width except padding
+   */
+  protected int mRealWidth;
+  protected boolean mIfDrawText = true;
+  protected static final int VISIBLE = 0;
+
+  public HorizontalProgressBarWithNumber(Context context, AttributeSet attrs) {
+    this(context, attrs, 0);
+  }
+
+  public HorizontalProgressBarWithNumber(Context context, AttributeSet attrs, int defStyle) {
+    super(context, attrs, defStyle);
+    obtainStyledAttributes(attrs);
+    mPaint.setTextSize(mTextSize);
+    mPaint.setColor(mTextColor);
+  }
+
+  @Override protected synchronized void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+    int width = MeasureSpec.getSize(widthMeasureSpec);
+    int height = measureHeight(heightMeasureSpec);
+    setMeasuredDimension(width, height);
+    mRealWidth = getMeasuredWidth() - getPaddingRight() - getPaddingLeft();
+  }
+
+  private int measureHeight(int measureSpec) {
+    int result = 0;
+    int specMode = MeasureSpec.getMode(measureSpec);
+    int specSize = MeasureSpec.getSize(measureSpec);
+    if (specMode == MeasureSpec.EXACTLY) {
+      result = specSize;
+    } else {
+      float textHeight = (mPaint.descent() - mPaint.ascent());
+      result = (int) (getPaddingTop() + getPaddingBottom() + Math.max(
+          Math.max(mReachedProgressBarHeight, mUnReachedProgressBarHeight), Math.abs(textHeight)));
+      if (specMode == MeasureSpec.AT_MOST) {
+        result = Math.min(result, specSize);
+      }
+    }
+    return result;
+  }
+
+  /**
+   * get the styled attributes
+   */
+  private void obtainStyledAttributes(AttributeSet attrs) {
+    // init values from custom attributes
+    final TypedArray attributes =
+        getContext().obtainStyledAttributes(attrs, R.styleable.HorizontalProgressBarWithNumber);
+    mTextColor =
+        attributes.getColor(R.styleable.HorizontalProgressBarWithNumber_progress_text_color,
+            DEFAULT_TEXT_COLOR);
+    mTextSize = (int) attributes.getDimension(
+        R.styleable.HorizontalProgressBarWithNumber_progress_text_size, mTextSize);
+    mReachedBarColor =
+        attributes.getColor(R.styleable.HorizontalProgressBarWithNumber_progress_reached_color,
+            mTextColor);
+    mUnReachedBarColor =
+        attributes.getColor(R.styleable.HorizontalProgressBarWithNumber_progress_unreached_color,
+            DEFAULT_COLOR_UNREACHED_COLOR);
+    mReachedProgressBarHeight = (int) attributes.getDimension(
+        R.styleable.HorizontalProgressBarWithNumber_progress_reached_bar_height,
+        mReachedProgressBarHeight);
+    mUnReachedProgressBarHeight = (int) attributes.getDimension(
+        R.styleable.HorizontalProgressBarWithNumber_progress_unreached_bar_height,
+        mUnReachedProgressBarHeight);
+    mTextOffset = (int) attributes.getDimension(
+        R.styleable.HorizontalProgressBarWithNumber_progress_text_offset, mTextOffset);
+    int textVisible =
+        attributes.getInt(R.styleable.HorizontalProgressBarWithNumber_progress_text_visibility,
+            VISIBLE);
+    if (textVisible != VISIBLE) {
+      mIfDrawText = false;
+    }
+    attributes.recycle();
+  }
+
+  @Override protected synchronized void onDraw(Canvas canvas) {
+    canvas.save();
+    canvas.translate(getPaddingLeft(), getHeight() / 2);
+    boolean noNeedBg = false;
+    float radio = getProgress() * 1.0f / getMax();
+    float progressPosX = (int) (mRealWidth * radio);
+    String text = getProgress() + "%";
+    // mPaint.getTextBounds(text, 0, text.length(), mTextBound);
+    float textWidth = mPaint.measureText(text);
+    float textHeight = (mPaint.descent() + mPaint.ascent()) / 2;
+    if (progressPosX + textWidth > mRealWidth) {
+      progressPosX = mRealWidth - textWidth;
+      noNeedBg = true;
+    }
+    // draw reached bar
+    float endX = progressPosX - mTextOffset / 2;
+    if (endX > 0) {
+      mPaint.setColor(mReachedBarColor);
+      mPaint.setStrokeWidth(mReachedProgressBarHeight);
+      canvas.drawLine(0, 0, endX, 0, mPaint);
+    }
+    // draw progress bar
+    // measure text bound
+    if (mIfDrawText) {
+      mPaint.setColor(mTextColor);
+      canvas.drawText(text, progressPosX, -textHeight, mPaint);
+    }
+    // draw unreached bar
+    if (!noNeedBg) {
+      float start = progressPosX + mTextOffset / 2 + textWidth;
+      mPaint.setColor(mUnReachedBarColor);
+      mPaint.setStrokeWidth(mUnReachedProgressBarHeight);
+      canvas.drawLine(start, 0, mRealWidth, 0, mPaint);
+    }
+    canvas.restore();
+  }
+
+  /**
+   * dp 2 px
+   */
+  protected int dp2px(int dpVal) {
+    return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dpVal,
+        getResources().getDisplayMetrics());
+  }
+
+  /**
+   * sp 2 px
+   */
+  protected int sp2px(int spVal) {
+    return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, spVal,
+        getResources().getDisplayMetrics());
+  }
+}

app/src/main/res/layout/activity_main.xml

@@ -1,35 +1,17 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.design.widget.CoordinatorLayout
+<layout xmlns:android="http://schemas.android.com/apk/res/android">
-    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"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:fitsSystemWindows="true"
-    tools:context="com.example.arial.downloaddemo.MainActivity">
 
-    <android.support.design.widget.AppBarLayout
+  <LinearLayout
-        android:layout_height="wrap_content"
+      android:layout_width="match_parent"
+      android:layout_height="match_parent"
+      android:orientation="vertical"
+      >
+
+    <android.support.v7.widget.RecyclerView
+        android:id="@+id/list"
         android:layout_width="match_parent"
-        android:theme="@style/AppTheme.AppBarOverlay">
+        android:layout_height="match_parent"
+        />
 
-        <android.support.v7.widget.Toolbar
+  </LinearLayout>
-            android:id="@+id/toolbar"
+</layout>
-            android:layout_width="match_parent"
-            android:layout_height="?attr/actionBarSize"
-            android:background="?attr/colorPrimary"
-            app:popupTheme="@style/AppTheme.PopupOverlay" />
-
-    </android.support.design.widget.AppBarLayout>
-
-    <include layout="@layout/content_main"/>
-
-    <android.support.design.widget.FloatingActionButton
-        android:id="@+id/fab"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_gravity="bottom|end"
-        android:layout_margin="@dimen/fab_margin"
-        android:src="@android:drawable/ic_dialog_email" />
-
-</android.support.design.widget.CoordinatorLayout>

app/src/main/res/layout/activity_simple.xml

@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layout xmlns:android="http://schemas.android.com/apk/res/android">
+
+  <android.support.design.widget.CoordinatorLayout
+
+      xmlns:app="http://schemas.android.com/apk/res-auto"
+      xmlns:tools="http://schemas.android.com/tools"
+      android:layout_width="match_parent"
+      android:layout_height="match_parent"
+      android:fitsSystemWindows="true"
+      tools:context="com.arialyy.simple.activity.SimpleTestActivity"
+      >
+
+    <android.support.design.widget.AppBarLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:theme="@style/AppTheme.AppBarOverlay"
+        >
+
+      <android.support.v7.widget.Toolbar
+          android:id="@+id/toolbar"
+          android:layout_width="match_parent"
+          android:layout_height="?attr/actionBarSize"
+          android:background="?attr/colorPrimary"
+          app:popupTheme="@style/AppTheme.PopupOverlay"
+          />
+
+    </android.support.design.widget.AppBarLayout>
+
+    <include layout="@layout/content_simple"/>
+
+    <android.support.design.widget.FloatingActionButton
+        android:id="@+id/fab"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="bottom|end"
+        android:layout_margin="@dimen/fab_margin"
+        android:src="@android:drawable/ic_dialog_email"
+        />
+
+  </android.support.design.widget.CoordinatorLayout>
+</layout>

app/src/main/res/layout/content_main.xml

@@ -1,65 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<RelativeLayout 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"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    app:layout_behavior="@string/appbar_scrolling_view_behavior"
-    tools:context="com.example.arial.downloaddemo.MainActivity"
-    tools:showIn="@layout/activity_main">
-
-    <ProgressBar
-        android:id="@+id/progressBar"
-        style="?android:attr/progressBarStyleHorizontal"
-        android:layout_width="wrap_content"
-        android:layout_height="20dp"
-        android:layout_alignParentLeft="true"
-        android:layout_alignParentStart="true"
-        android:layout_alignParentTop="true"
-        android:layout_margin="16dp"
-        android:layout_toLeftOf="@+id/size" />
-
-    <TextView
-        android:id="@+id/size"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_alignParentRight="true"
-        android:layout_alignTop="@+id/progressBar"
-        android:layout_marginRight="16dp"
-        android:text="ssss"
-        android:textSize="16sp" />
-
-    <LinearLayout
-        android:layout_below="@+id/progressBar"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:orientation="horizontal">
-
-        <Button
-            android:text="开始"
-            android:id="@+id/start"
-            style="?buttonBarButtonStyle"
-            android:layout_width="0dp"
-            android:layout_height="wrap_content"
-            android:layout_weight="1"
-            android:onClick="onClick" />
-
-        <Button
-            android:onClick="onClick"
-            android:text="暂停"
-            android:id="@+id/stop"
-            style="?buttonBarButtonStyle"
-            android:layout_width="0dp"
-            android:layout_height="wrap_content"
-            android:layout_weight="1" />
-
-        <Button
-            android:onClick="onClick"
-            android:text="取消"
-            android:id="@+id/cancel"
-            style="?buttonBarButtonStyle"
-            android:layout_width="0dp"
-            android:layout_height="wrap_content"
-            android:layout_weight="1" />
-    </LinearLayout>
-</RelativeLayout>

app/src/main/res/layout/content_simple.xml

@@ -0,0 +1,72 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout 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"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    app:layout_behavior="@string/appbar_scrolling_view_behavior"
+    tools:context="com.arialyy.simple.activity.SimpleTestActivity"
+    tools:showIn="@layout/activity_simple"
+    >
+
+  <ProgressBar
+      android:id="@+id/progressBar"
+      style="?android:attr/progressBarStyleHorizontal"
+      android:layout_width="wrap_content"
+      android:layout_height="20dp"
+      android:layout_alignParentLeft="true"
+      android:layout_alignParentStart="true"
+      android:layout_alignParentTop="true"
+      android:layout_margin="16dp"
+      android:layout_toLeftOf="@+id/size"
+      />
+
+  <TextView
+      android:id="@+id/size"
+      android:layout_width="wrap_content"
+      android:layout_height="wrap_content"
+      android:layout_alignParentRight="true"
+      android:layout_alignTop="@+id/progressBar"
+      android:layout_marginRight="16dp"
+      android:text="ssss"
+      android:textSize="16sp"
+      />
+
+  <LinearLayout
+      android:layout_below="@+id/progressBar"
+      android:layout_width="match_parent"
+      android:layout_height="wrap_content"
+      android:orientation="horizontal"
+      >
+
+    <Button
+        android:text="开始"
+        android:id="@+id/start"
+        style="?buttonBarButtonStyle"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_weight="1"
+        android:onClick="onClick"
+        />
+
+    <Button
+        android:onClick="onClick"
+        android:text="暂停"
+        android:id="@+id/stop"
+        style="?buttonBarButtonStyle"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_weight="1"
+        />
+
+    <Button
+        android:onClick="onClick"
+        android:text="取消"
+        android:id="@+id/cancel"
+        style="?buttonBarButtonStyle"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_weight="1"
+        />
+  </LinearLayout>
+</RelativeLayout>

app/src/main/res/layout/item_download.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:padding="16dp"
+    >
+
+  <com.arialyy.simple.widget.HorizontalProgressBarWithNumber
+      android:id="@+id/progressBar"
+      android:layout_width="match_parent"
+      android:layout_height="wrap_content"
+      android:layout_centerVertical="true"
+      android:layout_marginRight="16dp"
+      android:layout_toLeftOf="@+id/bt"
+      android:max="100"
+      />
+
+  <Button
+      android:id="@+id/bt"
+      android:layout_width="wrap_content"
+      android:layout_height="wrap_content"
+      android:layout_alignParentRight="true"
+      android:text="开始"
+      style="?buttonBarButtonStyle"
+      />
+
+</RelativeLayout>

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

@@ -1,9 +1,10 @@
 <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="com.example.arial.downloaddemo.MainActivity" >
+    tools:context="com.example.arial.downloaddemo.com.arialyy.simple.MainActivity">
-    <item android:id="@+id/action_settings"
+  <item
-        android:title="@string/action_settings"
+      android:id="@+id/action_settings"
-        android:orderInCategory="100"
+      android:title="@string/action_settings"
-        app:showAsAction="never" />
+      android:orderInCategory="100"
+      app:showAsAction="never"/>
 </menu>

app/src/main/res/values-v21/styles.xml

@@ -1,8 +1,9 @@
 <resources>
-            <style name="AppTheme.NoActionBar">
+
-            <item name="windowActionBar">false</item>
+  <style name="AppTheme.NoActionBar">
-            <item name="windowNoTitle">true</item>
+    <item name="windowActionBar">false</item>
-            <item name="android:windowDrawsSystemBarBackgrounds">true</item>
+    <item name="windowNoTitle">true</item>
-            <item name="android:statusBarColor">@android:color/transparent</item>
+    <item name="android:windowDrawsSystemBarBackgrounds">true</item>
-        </style>
+    <item name="android:statusBarColor">@android:color/transparent</item>
+  </style>
 </resources>

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

@@ -1,6 +1,6 @@
 <resources>
-    <!-- Example customization of dimensions originally defined in res/values/dimens.xml
+  <!-- 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
+       (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). -->
+       would include 7" and 10" devices in landscape (~960dp and ~1280dp respectively). -->
-    <dimen name="activity_horizontal_margin">64dp</dimen>
+  <dimen name="activity_horizontal_margin">64dp</dimen>
 </resources>

app/src/main/res/values/attr.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+  <declare-styleable name="HorizontalProgressBarWithNumber">
+    <attr name="progress_unreached_color" format="color" />
+    <attr name="progress_reached_color" format="color" />
+    <attr name="progress_reached_bar_height" format="dimension" />
+    <attr name="progress_unreached_bar_height" format="dimension" />
+    <attr name="progress_text_size" format="dimension" />
+    <attr name="progress_text_color" format="color" />
+    <attr name="progress_text_offset" format="dimension" />
+    <attr name="progress_text_visibility" format="enum">
+      <enum name="visible" value="0" />
+      <enum name="invisible" value="1" />
+    </attr>
+  </declare-styleable>
+</resources>

app/src/main/res/values/colors.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <color name="colorPrimary">#3F51B5</color>
+  <color name="colorPrimary">#3F51B5</color>
-    <color name="colorPrimaryDark">#303F9F</color>
+  <color name="colorPrimaryDark">#303F9F</color>
-    <color name="colorAccent">#FF4081</color>
+  <color name="colorAccent">#FF4081</color>
 </resources>

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

@@ -1,6 +1,6 @@
 <resources>
-    <!-- Default screen margins, per the Android Design guidelines. -->
+  <!-- Default screen margins, per the Android Design guidelines. -->
-    <dimen name="activity_horizontal_margin">16dp</dimen>
+  <dimen name="activity_horizontal_margin">16dp</dimen>
-    <dimen name="activity_vertical_margin">16dp</dimen>
+  <dimen name="activity_vertical_margin">16dp</dimen>
-    <dimen name="fab_margin">16dp</dimen>
+  <dimen name="fab_margin">16dp</dimen>
 </resources>

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

@@ -1,4 +1,4 @@
 <resources>
-    <string name="app_name">DownloadDemo</string>
+  <string name="app_name">DownloadDemo</string>
-    <string name="action_settings">Settings</string>
+  <string name="action_settings">Settings</string>
 </resources>

app/src/main/res/values/styles.xml

@@ -1,17 +1,20 @@
 <resources>
 
-    <!-- Base application theme. -->
+  <!-- Base application theme. -->
-    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
+  <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
-        <!-- Customize your theme here. -->
+    <!-- Customize your theme here. -->
-        <item name="colorPrimary">@color/colorPrimary</item>
+    <item name="colorPrimary">@color/colorPrimary</item>
-        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
+    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
-        <item name="colorAccent">@color/colorAccent</item>
+    <item name="colorAccent">@color/colorAccent</item>
-    </style>
+  </style>
-    <style name="AppTheme.NoActionBar">
+
-        <item name="windowActionBar">false</item>
+  <style name="AppTheme.NoActionBar">
-        <item name="windowNoTitle">true</item>
+    <item name="windowActionBar">false</item>
-    </style>
+    <item name="windowNoTitle">true</item>
-    <style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />
+  </style>
-    <style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />
+
+  <style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar"/>
+
+  <style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light"/>
 
 </resources>

app/src/test/java/com/example/arial/downloaddemo/ExampleUnitTest.java

@@ -2,14 +2,13 @@ package com.example.arial.downloaddemo;
 
 import org.junit.Test;
 
-import static org.junit.Assert.*;
+import static org.junit.Assert.assertEquals;
 
 /**
  * To work on unit tests, switch the Test Artifact in the Build Variants view.
  */
 public class ExampleUnitTest {
-    @Test
+  @Test public void addition_isCorrect() throws Exception {
-    public void addition_isCorrect() throws Exception {
+    assertEquals(4, 2 + 2);
-        assertEquals(4, 2 + 2);
+  }
-    }
 }