Android横向进度条演示效果

 <ProgressBar  android:id="@+id/pb"  style="@android:style/Widget.ProgressBar.Horizontal"  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:max="100" />  

package com.zengtao.classwork;  import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.support.v7.app.ActionBarActivity; import android.widget.ProgressBar;  public class MainActivity extends ActionBarActivity {  private ProgressBar pb; // 进度条  private int[] randData = new int[100]; // 数组  private int index = 0; // 索引  private int mProgressStaus = 0; // 设置进度条的长度  private Handler mHandler;   @Override  protected void onCreate(Bundle savedInstanceState) {   super.onCreate(savedInstanceState);   setContentView(R.layout.activity_main);    pb = (ProgressBar) findViewById(R.id.pb);    // 初始化handle，绑定在主线程中的队列消息中   mHandler = new Handler() {    @Override    public void handleMessage(Message msg) {     super.handleMessage(msg);     // 接收消息     if (msg.what == 0x111) {      mProgressStaus = index;      pb.setProgress(mProgressStaus);     }    }   };   // 创建子线程，在子线程中处理耗时工作   new Thread() {    @Override    public void run() {     super.run();     while (index < 100) {      doWork();      Message msg = new Message();      msg.what = 0x111;      mHandler.sendMessage(msg);     }    }    }.start();  }   /**   * 模拟耗时工作（一定要在子线程中做）   *   * @return 进度条的多少   */  public int doWork() {   randData[index++] = (int) (Math.random() * 100);   try {    Thread.sleep(100);   } catch (InterruptedException e) {    e.printStackTrace();   }   return index;  } }