public class MainActivity extends Activity {  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);  }  public void clearNotification(View v) {    // 通過(guò)代碼來(lái)清除 NO_CLEAR    // 清除也需要manager    NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);    // 只能清除由本應(yīng)用程序發(fā)出去的通知    manager.cancelAll();  }  public void sendNotification(View v) {    // 他是 在v4包中的通知，用于16以下版本發(fā)送通知    // NotificationCompat    // 通知的創(chuàng)建    Notification.Builder builder = new Notification.Builder(this);    // NotificationCompat.Builder builder2 = new NotificationCompat.Builder(    // this);    // 顯示在通知條上的圖標(biāo) 必須的    builder.setSmallIcon(R.drawable.ic_launcher);    // 顯示通知條上的文字 不是必須的    builder.setTicker("您有一條新的消息!!");    // 狀態(tài)欄中的    builder.setContentTitle("大標(biāo)題");    builder.setContentText("文本");    builder.setWhen(System.currentTimeMillis());    builder.setContentInfo("Info");    builder.setDefaults(Notification.DEFAULT_ALL);    // 點(diǎn)擊事件使用Pending    Intent intent = new Intent(this, MainActivity.class);    PendingIntent pi = PendingIntent.getActivity(this, 1, intent,        PendingIntent.FLAG_UPDATE_CURRENT);    builder.setContentIntent(pi);    // 生成對(duì)象 16API以上，支持低版本需要使用v4包中的notificationCompat    Notification notify = builder.build();    // 設(shè)置不能清除    notify.flags = Notification.FLAG_NO_CLEAR;    // 如何將通知發(fā)送出去    NotificationManager mananger = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);    // 通知的唯一值，如果id重復(fù)，表明是更新一條通知，而不是新建    mananger.notify((int) (Math.random() * 1000), notify);  }  public void diyNotification(View v) {    // 展示在通知上面的視圖    RemoteViews views = new RemoteViews(getPackageName(), R.layout.layout);    Notification notification = new Notification.Builder(this)        .setSmallIcon(R.drawable.ic_launcher).setTicker("自定義通知 ")        // 布局        .setContent(views).build();    // 使用RemoteViews來(lái)設(shè)置點(diǎn)擊事件    views.setTextColor(R.id.tv, Color.RED);    Intent intent = new Intent(this, OneActivity.class);    // 音樂(lè)播放是放在Service    PendingIntent pi = PendingIntent.getActivity(this, 2, intent,        PendingIntent.FLAG_UPDATE_CURRENT);    views.setOnClickPendingIntent(R.id.tv, pi);    Intent intent2 = new Intent(this, MainActivity.class);    PendingIntent pi2 = PendingIntent.getActivity(this, 1, intent2,        PendingIntent.FLAG_UPDATE_CURRENT);    views.setOnClickPendingIntent(R.id.iv, pi2);    // 發(fā)送    NotificationManager notify = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);    notify.notify(1, notification);  }}

public class OneActivity extends Activity {  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    TextView tv = new TextView(this);    tv.setText("跳轉(zhuǎn)界面");    setContentView(tv);  }}

<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:orientation="vertical"  tools:context="com.example.lesson8_notification.MainActivity" >  <Button    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:onClick="sendNotification"    android:text="普通的通知" />  <Button    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:onClick="clearNotification"    android:text="清除所有通知" />  <Button    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:onClick="diyNotification"    android:text="自定義通知" /></LinearLayout>

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="match_parent"  android:layout_height="match_parent"  android:orientation="vertical" >  <TextView    android:id="@+id/tv"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:text="TextView" />  <ImageView    android:id="@+id/iv"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:src="@drawable/ic_launcher" /></LinearLayout>