如何在android中创建多个状态栏通知

Question

我需要创建多个状态栏通知。当我拉下状态栏时，应该将多个通知图标显示为列表。每个通知图标都应显示下一页显示的单独数据。我该怎么做？

我的代码：

public class SimpleNotification extends Activity {

private NotificationManager mNotificationManager;
private int SIMPLE_NOTFICATION_ID;

String str="Hai";
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    mNotificationManager = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
    final Notification notifyDetails = new Notification(R.drawable.android,"New Alert, Click Me!",System.currentTimeMillis());


    Button start = (Button)findViewById(R.id.notifyButton);
    Button cancel = (Button)findViewById(R.id.cancelButton);



        start.setOnClickListener(new OnClickListener() {

        public void onClick(View v) {


            Context context = getApplicationContext();
            CharSequence contentTitle = "Notification Details...";
            CharSequence contentText = "Browse Android Official Site by clicking me";
            Intent notifyIntent = new Intent(SimpleNotification.this,
                    sub.class);

            Bundle bundle = new Bundle();
            bundle.putString("welcome",str);
            notifyIntent.putExtras(bundle);

            PendingIntent intent = 
                PendingIntent.getActivity(SimpleNotification.this, 0, 
                notifyIntent, android.content.Intent.FLAG_ACTIVITY_NEW_TASK);

            notifyDetails.setLatestEventInfo(context, contentTitle, contentText, intent);
            mNotificationManager.notify(SIMPLE_NOTFICATION_ID, notifyDetails);
        }
    });

我在这里做过一次通知，但我需要创建多个通知，每个通知应该显示每个数据。

Answer 1

您需要为每个通知传递唯一ID。点击通知后，您可以使用该ID将其删除。

public class SimpleNotification extends Activity {

    private NotificationManager mNotificationManager;
    private int SIMPLE_NOTFICATION_ID_A = 0;
    private int SIMPLE_NOTFICATION_ID_B = 1;

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

        mNotificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

        Button start = (Button) findViewById(R.id.start_button);        

        start.setOnClickListener(new OnClickListener() {
            public void onClick(View v) {
                // display A
                displayNotification("Extra for A", "This is A", "Some text for activity A", MyActivityA.class, SIMPLE_NOTFICATION_ID_A);
                // display B
                displayNotification("Extra for B", "This is B", "Some text for activity B", MyActivityB.class, SIMPLE_NOTFICATION_ID_B);
            }
        });
    }

    private void displayNotification(String extra, String contentTitle, String contentText, Class<?> cls, int id) {     
        Notification notifyDetails = new Notification(R.drawable.icon, "New Alert!", System.currentTimeMillis());
        Intent intent = new Intent(this, cls);
        intent.putExtra("extra", extra);
        PendingIntent contentIntent = PendingIntent.getActivity(getApplicationContext(), id, intent, PendingIntent.FLAG_ONE_SHOT);
        notifyDetails.setLatestEventInfo(getApplicationContext(), contentTitle, contentText, contentIntent);
        mNotificationManager.notify(id, notifyDetails);
    }
}

MyActivityA - 在onCreate（）

中

...
mNotificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
mNotificationManager.cancel(SIMPLE_NOTFICATION_ID_A);
...

Answer 2

只需在mNotificationManager.notify(ID, notifyDetails);

上使用不同的ID即可

如果您重复使用该ID，则不会添加新ID，而是更新旧版本。

以下是有关如何使用notifications的指南。

Answer 3

你必须使用 notfication id ，因为有时候解决方案是你必须使用 ramdom 数字概念

Random random = new Random();
int randomNumber = random.nextInt(9999 - 1000) + 1000;
notificationManager.notify(randomNumber, notification);

Answer 4

This example显示了如何创建多个通知

Answer 5

如果要在每个通知上显示不同的数据。使用待审FLAG_UPDATE_CURRENT中的举报Intent。

PendingIntent contentIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);

它会更新每个通知的数据，而不必每次都重新创建。