进度条

一个自动义的进度条

首先在”drawable“文件夹下添加两照用于进度条的图片,progress_bar_long.png,progress_bar.png

添加一个xml文件（progress_horizontal.xml）如下:

 

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    
    <item android:id="@android:id/background">
        <shape>
            <corners android:radius="3dip" />
            <gradient
                    android:startColor="#88ffffff"
                    android:centerColor="#889d9e9d"
                    android:centerY="0.75"
                    android:endColor="#88747674"
                    android:angle="270"
            />
        </shape>
    </item>
    
    <item android:id="@android:id/secondaryProgress">
        <clip>
            <shape>
                <corners android:radius="3dip" />
                <gradient
                        android:startColor="#80ffd300"
                        android:centerColor="#80ffb600"
                        android:centerY="0.75"
                        android:endColor="#a0ffcb00"
                        android:angle="270"
                />
            </shape>
        </clip>
    </item>
    
    <item android:id="@android:id/progress">
        <clip>
            <shape>
                <corners android:radius="3dip" />
                <gradient
                  android:drawable="@drawable/progress_bar"
                        android:startColor="#ffdeef73"
                        android:centerColor="#ff7ba608"
                        android:centerY="0.75"
                        android:endColor="#ffe7f79c"
                        android:angle="270"
                />
            </shape>
        </clip>
    </item>
    
</layer-list>

2。在res/layout文件夹下添加main.xml如下

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:gravity="center_horizontal"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@drawable/music_detail_bg_picture">    
    <RelativeLayout android:id="@+id/main_progressBar"
     android:layout_width="fill_parent"
     android:layout_height="30px"
     android:layout_marginLeft="10px"
     android:layout_marginTop="200px">
     <ProgressBar android:id="@+id/progress_horizontal"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:indeterminateOnly="false"
        android:progressDrawable="@drawable/progress_horizontal"
        android:indeterminateDrawable="@android:drawable/progress_indeterminate_horizontal"
        android:maxHeight="10dip"
        android:minHeight="10dip"
        android:max="100"/>
    </RelativeLayout>
</RelativeLayout>

3.代码

public class MainActivity extends Activity{
 /**
  * 界面
  */
 private View mainView; 
 /**
  * 进度条的进度
  */
 private int progress;
 /**
  * 进度条视图
  */
 private ProgressBar progressBar;
 /**
  * 定时器
  */
 private Timer timer;

 /**
  * 刷新进度条的handler
  */
 protected Handler processhandler = new Handler()
 {
  @Override
  public void handleMessage(Message msg)
  {
   switch (msg.what)
   {
   case 2:
    timer.cancel();
//    Intent intent = new Intent(
//      MainActivity.this.getApplicationContext(),
//      MainSearch.class);
//    startActivity(intent);
//    MainActivity.this.finish();
    break;
   default:
    break;
   }
   super.handleMessage(msg);
  }
 };

 public void onCreate(Bundle savedInstanceState)
 {
  super.onCreate(savedInstanceState);

  // 初始化要用的视图
  initViews();
  // 启动定时任务
  startLiveTimer();
 }

 /**
  *  初始化要用的视图   
  */
 private void initViews()
 {
  // 实例化一个定时器
  timer = new Timer();
  // 获得显示广告界面的View
  mainView = View.inflate(this, R.layout.main, null);
  // 获得显示进度条的view
  progressBar = (ProgressBar) mainView
    .findViewById(R.id.progress_horizontal);
  setContentView(mainView);
 }

 /**
  * 启动发送live请求的定时器
  */
 public void startLiveTimer()
 {
  // 构造一个定时器任务对象
  TimerTask changeTask = new TimerTask()
  {
   /**
    * 定时器任务的执行体
    */
   public void run()
   {
    progress++;

    // 当加载进度小于100%的时候进行的操作
    if (progress > 0 && progress < 100)
    {
     progressBar.setProgress(progress);
    }
    // 当加载完成时进行的操作
    else if (progress >= 100)
    {
     progressBar.setProgress(progress);
     processhandler.sendMessage(processhandler.obtainMessage(
       2, null));
    }
   }
  };

  // 启动定时器
  timer.schedule(changeTask, 100, 100);
 }
}