Status Bar Notification

package com.xiangqiao.notification; import android.app.Activity; import android.app.NotificationManager; import android.content.Context; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; public class MainActivity extends Activity { OnClickListener listener = new OnClickListener() { @Override public void onClick(View v) { Intent intent = new Intent(); intent.setClass(MainActivity.this, IntentService.class); startService(intent); } }; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Button button = (Button) findViewById(R.id.notify); button.setOnClickListener(listener); } @Override protected void onStart() { super.onStart(); NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE); notificationManager.cancel(IntentService.NOTIFY_ID); } }

package com.xiangqiao.notification; import android.R.anim; import android.app.Notification; import android.app.NotificationManager; import android.app.PendingIntent; import android.content.Context; import android.content.Intent; import android.util.Log; public class IntentService extends android.app.IntentService { public static final int NOTIFY_ID = 1; public IntentService() { super("IntentService"); } @Override protected void onHandleIntent(Intent intent) { Log.i("sys", "开始下载"); showNotify(false); try { Thread.sleep(2000); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } Log.i("sys", "下载完毕"); showNotify(true); } public void showNotify(boolean finish) { Notification notification; Intent intent = new Intent(); intent.setClass(this, MainActivity.class); PendingIntent contentIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT); NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE); if (!finish) { notification = new Notification(android.R.drawable.ic_dialog_alert, "开始下载", System.currentTimeMillis()); notification.setLatestEventInfo(this, "下载", "正在下载", contentIntent); } else { notification = new Notification(android.R.drawable.ic_dialog_alert, "下载完毕", System.currentTimeMillis()); notification.setLatestEventInfo(this, "下载", "下载完毕", contentIntent); } // option选项 notification.defaults = Notification.DEFAULT_ALL; notificationManager.notify(NOTIFY_ID, notification); } }