Android实现为Notification加上一个进度条的方法

package com.notification;import android.app.Activity;import android.app.Notification;import android.app.NotificationManager;import android.app.PendingIntent;import android.content.Intent;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.RemoteViews;import android.widget.Toast;public class nofificationActivity extends Activity implements OnClickListener {  private static final int NOTIFICATION_ID = 0x12;  private Notification notification = null;  private NotificationManager manager = null;  public Handler handler;  private int _progress = 0;  private Thread thread = null;  private boolean isStop = false;  // 当界面处理停止的状态 时，设置让进度条取消  @Override  protected void onPause() {    // TODO Auto-generated method stub    isStop = false;    manager.cancel(NOTIFICATION_ID);    super.onPause();  }  /** Called when the activity is first created. */  @Override  public void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.main);    Button btn = (Button) findViewById(R.id.Button01);    btn.setOnClickListener(this);    notification = new Notification(R.drawable.icon, "带进条的提醒", System        .currentTimeMillis());    notification.icon = R.drawable.icon;    // 通过RemoteViews 设置notification中View 的属性    notification.contentView = new RemoteViews(getApplication()        .getPackageName(), R.layout.custom_dialog);    notification.contentView.setProgressBar(R.id.pb, 100, 0, false);    notification.contentView.setTextViewText(R.id.tv, "进度" + _progress        + "%");    // 通过PendingIntetn    // 设置要跳往的Activity，这里也可以设置发送一个服务或者广播，    // 不过在这里的操作都必须是用户点击notification之后才触发的    notification.contentIntent = PendingIntent.getActivity(this, 0,        new Intent(this, remoteView.class), 0);    // 获得一个NotificationManger 对象，此对象可以对notification做统一管理，只需要知道ID    manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);  }  @Override  public void onClick(View v) {    // TODO Auto-generated method stub    isStop = true;    manager.notify(NOTIFICATION_ID, notification);    thread = new Thread(new Runnable() {      @Override      public void run() {        Thread.currentThread();        // TODO Auto-generated method stub        while (isStop) {          _progress += 10;          Message msg = handler.obtainMessage();          msg.arg1 = _progress;          msg.sendToTarget();          try {            Thread.sleep(500);          } catch (InterruptedException e) {            // TODO Auto-generated catch block            e.printStackTrace();          }        }      }    });    thread.start();    handler = new Handler() {      @Override      public void handleMessage(Message msg) {        // TODO Auto-generated method stub        notification.contentView.setProgressBar(R.id.pb, 100, msg.arg1,            false);        notification.contentView.setTextViewText(R.id.tv, "进度"            + msg.arg1 + "%");        manager.notify(NOTIFICATION_ID, notification);        if (msg.arg1 == 100) {          _progress = 0;          manager.cancel(NOTIFICATION_ID);          isStop = false;          Toast.makeText(nofificationActivity.this, "下载完毕", 1000)              .show();        }        super.handleMessage(msg);      }    };  }}