private NotificationManager nm;  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    //獲取系統的通知管理    nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);  }

public void send(View view){    //用于打開通知啟動另一個Activity    Intent intent = new Intent(MainActivity.this,OtherActivity.class);    //用于延遲啟動    PendingIntent pi = PendingIntent.getActivity(MainActivity.this, 0, intent, 0);    //設置通知    Notification notify = new Notification.Builder(this)        //設置打開該通知,通知自動消失        .setAutoCancel(true)        //設置顯示在狀態欄的通知提示消息        .setTicker("新消息")        //設置通知欄圖標        .setSmallIcon(R.mipmap.ic_launcher)        //設置通知內容的標題        .setContentTitle("一條新通知")        //設置通知內容        .setContentText("恭喜你通知欄測試成功")        //設置使用系統默認的聲音,默認的led燈        .setDefaults(Notification.DEFAULT_SOUND | Notification.DEFAULT_LIGHTS)        //ALL的話則是全部使用默認,聲音,震動,閃光燈,需要添加相應權限//        .setDefaults(ALL)        //或者自定義聲音        //setSound(Uri.parse())        //設置要啟動的程序        .setContentIntent(pi)        //最后用build來建立通知        .build();    //發送當前通知,通過NotificationManager來管理    nm.notify(1,notify);  }

<activity android:name=".OtherActivity"> </activity>  <uses-permission android:name="android.permission.FLASHLIGHT"/>  <uses-permission android:name="android.permission.VIBRATE"/>

//取消通知  public void closed(View view){    nm.cancel(1);  }

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"  android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"  android:orientation="horizontal"  android:paddingRight="@dimen/activity_horizontal_margin"  android:paddingTop="@dimen/activity_vertical_margin"  android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">  <Button    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:text="開啟通知"    android:onClick="send"    android:id="@+id/btnstartnotification"     />  <Button    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:text="關閉通知"    android:onClick="closed"    android:id="@+id/btnstopnotification"     /></LinearLayout>