单击“通知”是否未启动预期活动？-Java 学习之路

我在我的应用程序中使用GCM，并且每当收到GCM消息时都使用NotificationManager创建通知 . 现在一切正常，GCM消息在通知区域正确显示，但是当我点击通知时它应该启动一个活动我的应用程序将显示未发生的消息详细信息 . 每次我点击通知它都不会启动任何活动，它仍然保持原样 . 我创建通知的代码是：

private void sendNotification(String msg) {
        SharedPreferences prefs = getSharedPreferences(
                DataAccessServer.PREFS_NAME, MODE_PRIVATE);
        mNotificationManager = (NotificationManager) this
                .getSystemService(Context.NOTIFICATION_SERVICE);
        Intent intent = new Intent(this, WarningDetails.class);
        Bundle bundle = new Bundle();
        bundle.putString("warning", msg);
        bundle.putInt("warningId", NOTIFICATION_ID);
        intent.putExtras(bundle);
        // The stack builder object will contain an artificial back stack for
        // the
        // started Activity.
        // This ensures that navigating backward from the Activity leads out of
        // your application to the Home screen.
        TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
        // Adds the back stack for the Intent (but not the Intent itself)
        stackBuilder.addParentStack(WarningDetails.class);
        // Adds the Intent that starts the Activity to the top of the stack
        stackBuilder.addNextIntent(intent);

        PendingIntent contentIntent = stackBuilder.getPendingIntent(0,
                PendingIntent.FLAG_UPDATE_CURRENT);

        NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(
                this).setSmallIcon(R.drawable.weather_alert_notification)
                .setContentTitle("Weather Notification")
                .setStyle(new NotificationCompat.BigTextStyle().bigText(msg))
                .setContentText(msg);
        String selectedSound = prefs.getString("selectedSound", "");
        if (!selectedSound.equals("")) {
            Uri alarmSound = Uri.parse(selectedSound);
            mBuilder.setSound(alarmSound);

        } else {
            Uri alarmSound = RingtoneManager
                    .getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
            mBuilder.setSound(alarmSound);
        }

        if (prefs.getBoolean("isVibrateOn", false)) {
            long[] pattern = { 500, 500, 500, 500, 500, 500, 500, 500, 500 };
            mBuilder.setVibrate(pattern);
        }

        mBuilder.setContentIntent(contentIntent);
        mNotificationManager.notify(NOTIFICATION_ID, mBuilder.build());
    }

我更新了我的代码以支持 Preserving Navigation when Starting an Activity ，就像它在使用Android开发者网站的Gmail应用程序中发生一样，此后它停止了工作 . 有人请指导我在此代码中缺少或做错了什么 .

7 回答

-1

我的问题解决了我只需要添加 PendingIntent.FLAG_ONE_SHOT 标志，所以我换了：

PendingIntent contentIntent = stackBuilder
                .getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);

至

PendingIntent contentIntent = stackBuilder
                .getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT
                        | PendingIntent.FLAG_ONE_SHOT);

回复于 2024-04-29T07:37:04+08:00

2

我遇到了同样的问题并通过将 android:exported="true" 添加到AndroidManifest.xml中的活动声明来解决它 .

回复于 2024-04-29T07:37:04+08:00

-2

在这里，您只是将Intent传递给pendingintent：见下文

Intent notificationIntent = new Intent(context, Login.class);

 PendingIntent contentIntent = PendingIntent.getActivity(context, 0, notificationIntent, 0);
and set this contentintent into your Notification:

Notification noti = new NotificationCompat.Builder(context)
                    .setSmallIcon(icon_small)
                    .setTicker(message)
                    .setLargeIcon(largeIcon)
                    .setWhen(System.currentTimeMillis())
                    .setContentTitle(title)
                    .setContentText(message)
                    .setContentIntent(**contentIntent**)
                    .setAutoCancel(true).build();

这可能对你有所帮助 .

回复于 2024-04-29T07:37:04+08:00

如果您使用 Action String 启动预期的活动，请不要忘记添加

<intent-filter>
       <action android:name="YOUR ACTION STRING"/>
       <category android:name="android.intent.category.DEFAULT" />
</intent-filter>

在 <activity></activity> 标签内

回复于 2024-04-29T07:37:04+08:00

-1

试试这个而不是最后一行：

mNotificationManager.notify（0，mBuilder.getNotification（））;

回复于 2024-04-29T07:37:04+08:00
0
您要启动的活动必须在清单中指定为LAUNCHER活动 - 否则它将不会通过Pending Intent启动 . 在AndroidManifext.xml中添加以下内容
```
<activity
...
android:exported="true">
<intent-filter>
    <category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
```
否则，您将需要使用已指定为LAUNCHER的活动（例如您的主要活动）
回复于 2024-04-29T07:37:04+08:00

在generateNotification（）方法上做这样的事情..

用Splash.Java类替换你的活动 .

/**
     * Issues a notification to inform the user that server has sent a message.
     */
    @SuppressWarnings("deprecation")
    private static void generateNotification(Context context, String message) {
        int icon = R.drawable.ic_launcher;
        long when = System.currentTimeMillis();
        //message = "vivek";
       // Log.d("anjan", message.split("~")[0]);
        //Toast.makeText(context, message, Toast.LENGTH_LONG).show();

        NotificationManager notificationManager = (NotificationManager)
                context.getSystemService(Context.NOTIFICATION_SERVICE);
        Notification notification = new Notification(icon, message, when);

        String title = context.getString(R.string.app_name);
        Log.d("anjan1", title);
        String text_message = context.getString(R.string.title_activity_main);
        Log.d("anjan1", text_message);

        Intent notificationIntent = new Intent(context, Splash.class);
        // set intent so it does not start a new activity
        notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP |
                Intent.FLAG_ACTIVITY_SINGLE_TOP);
        PendingIntent intent = PendingIntent.getActivity(context, 0, notificationIntent, 0);
        notification.setLatestEventInfo(context, title, message, intent);
        notification.flags |= Notification.FLAG_AUTO_CANCEL;

        // Play default notification sound
        notification.defaults |= Notification.DEFAULT_SOUND;

        // Vibrate if vibrate is enabled
        notification.defaults |= Notification.DEFAULT_VIBRATE;
        notificationManager.notify(0, notification);      

    }

回复于 2024-04-29T07:37:04+08:00

单击“通知”是否未启动预期活动？

7 回答

相关问题