Android实现为Notification加上一个进度条的方法

本文实例讲述了android实现为notification加上一个进度条的方法。分享给大家供大家参考，具体如下：

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);
      }
    };
  }
}

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希望本文所述对大家android程序设计有所帮助。