单击状态栏中的通知消息后，通知服务无法正常工作

Question

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

两者都有效但部分是因为我已经按原样下载了两个项目并执行了它们。两者都有按钮来发起通知。按钮点击通知显示在顶部状态栏中。

问题出现了，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，所以任何帮助都要赞赏...

修改

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");
    }
}

main.xml中

<?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>

为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

检查出来

   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();
    }