android 通知Notification详解及实例代码

public class MainActivity extends Activity {

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

  }

  public void clearNotification(View v) {
    // 通过代码来清除 NO_CLEAR
    // 清除也需要manager
    NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    // 只能清除由本应用程序发出去的通知
    manager.cancelAll();
  }

  public void sendNotification(View v) {
    // 他是 在v4包中的通知，用于16以下版本发送通知
    // NotificationCompat
    // 通知的创建
    Notification.Builder builder = new Notification.Builder(this);
    // NotificationCompat.Builder builder2 = new NotificationCompat.Builder(
    // this);
    // 显示在通知条上的图标 必须的
    builder.setSmallIcon(R.drawable.ic_launcher);
    // 显示通知条上的文字 不是必须的
    builder.setTicker("您有一条新的消息!!");

    // 状态栏中的
    builder.setContentTitle("大标题");
    builder.setContentText("文本");
    builder.setWhen(System.currentTimeMillis());
    builder.setContentInfo("Info");
    builder.setDefaults(Notification.DEFAULT_ALL);
    // 点击事件使用Pending
    Intent intent = new Intent(this, MainActivity.class);
    PendingIntent pi = PendingIntent.getActivity(this, 1, intent,
        PendingIntent.FLAG_UPDATE_CURRENT);
    builder.setContentIntent(pi);
    // 生成对象 16API以上，支持低版本需要使用v4包中的notificationCompat
    Notification notify = builder.build();
    // 设置不能清除
    notify.flags = Notification.FLAG_NO_CLEAR;

    // 如何将通知发送出去
    NotificationManager mananger = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    // 通知的唯一值，如果id重复，表明是更新一条通知，而不是新建
    mananger.notify((int) (Math.random() * 1000), notify);
  }

  public void diyNotification(View v) {
    // 展示在通知上面的视图
    RemoteViews views = new RemoteViews(getPackageName(), R.layout.layout);
    Notification notification = new Notification.Builder(this)
        .setSmallIcon(R.drawable.ic_launcher).setTicker("自定义通知 ")
        // 布局
        .setContent(views).build();
    // 使用RemoteViews来设置点击事件
    views.setTextColor(R.id.tv, Color.RED);
    Intent intent = new Intent(this, OneActivity.class);
    // 音乐播放是放在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);
    // 发送
    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("跳转界面");
    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="自定义通知" />

</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>