单击状态栏中的通知消息后通知服务不起作用

Question

我参考了以下链接来研究 Android 通知服务的演示示例：Sai Geetha Blog 和 Vogella Tutorial。

两者都有效但部分有效，即我已经按原样下载了两个项目并执行了它们。两者都有按钮来启动通知。 On Button Click 通知出现在顶部状态栏。

问题来了，点击该通知后，既没有显示任何消息，也没有触发意图导航到新活动。

我是这个概念的新手，所以任何帮助表示赞赏......

编辑

CreateNotification .class

public class CreateNotification extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
    }

    public void createNotification(View view) {
        NotificationManager nm= (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
        final int UNIQUE_ID = 123458;
        Intent navigationIntent = new Intent();
        navigationIntent.setClass(CreateNotification.this,
                NotificationReceiver.class);

        PendingIntent pi = PendingIntent.getActivity(this, 0, navigationIntent,
                0);
        String body = "New Notification added!!!";
        String title = "Title";
        Notification n = new Notification(R.drawable.ic_launcher, body,
                System.currentTimeMillis());
        n.number = 2;
        n.setLatestEventInfo(this, title, body, pi);
        n.defaults = Notification.DEFAULT_ALL;
        nm.notify(UNIQUE_ID, n);
    }
}

---

NotificationReceiver.class

public class NotificationReceiver extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.result);
        Log.i("Receiver", "NotificationReceiver");
    }
}

ma​​in.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <Button
        android:id="@+id/button1"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:onClick="createNotification"
        android:text="Create Notification" >
    </Button>

</LinearLayout>

result.xml

<?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" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="This is the result activity opened from the notification" >
    </TextView>

</LinearLayout>

Answer 1

看看这个

   public static NotificationManager nm;
public static final int UNIQUE_ID = 123458;
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.newone);
    createNotification();

}
public void createNotification() {
    NotificationManager nm= (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    final int UNIQUE_ID = 123458;
    Intent navigationIntent = new Intent();
    navigationIntent.setClass(NEWAct.this,
            TestActivity.class);
    navigationIntent.putExtra("selected_tab", "more");

    PendingIntent pi = PendingIntent.getActivity(this, 0, navigationIntent,
            0);
    String body = "New Notification added!!!";
    String title = "Title";
    Notification n = new Notification(R.drawable.ic_launcher, body,
            System.currentTimeMillis());
    n.number = 2;
    n.setLatestEventInfo(this, title, body, pi);
    n.defaults = Notification.DEFAULT_ALL;
    nm.notify(UNIQUE_ID, n);
}

在您的活动启动后，您必须使用 id(UNIQUE_ID) 取消该通知

              try {
        nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
        nm.cancel(UNIQUE_ID);
    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }