PendingIntent不发送意向性附加

Question

我的refreshservice会发出一个通知,当用户单击它时启动我的mainactivity。

这看起来是这样的：

    Log.d("Refresh", "RefreshService got: isNextWeek: " + String.valueOf(isNextWeek));

    Intent notificationIntent = new Intent(this, MainActivity.class);
    notificationIntent.putExtra(MainActivity.IS_NEXT_WEEK, isNextWeek);

    Log.d("Refresh", "RefreshService put in Intent: isNextWeek: " + String.valueOf(notificationIntent.getBooleanExtra(MainActivity.IS_NEXT_WEEK,false)));
    pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);

    builder = new NotificationCompat.Builder(this).setContentTitle("Title").setContentText("ContentText").setSmallIcon(R.drawable.ic_notification).setContentIntent(pendingIntent);
    notification = builder.build();
    // Hide the notification after its selected
    notification.flags |= Notification.FLAG_AUTO_CANCEL;
    notificationManager.notify(NOTIFICATION_REFRESH, notification);

如您所见，notificationintent应该具有boolean额外的is_next_week，其值为isnextweek放在pendingintent中。

当我单击“现在”这个通知时，我总是得到false作为是NextWeek的值

这是我在mainactivity中获取值的方式：

    isNextWeek = getIntent().getBooleanExtra(IS_NEXT_WEEK, false);

日志：

08-04 00:19:32.500  13367-13367/de.MayerhoferSimon.Vertretungsplan D/Refresh: MainActivity sent: isNextWeek: true
08-04 00:19:32.510  13367-13573/de.MayerhoferSimon.Vertretungsplan D/Refresh: RefreshService got: isNextWeek: true
08-04 00:19:32.510  13367-13573/de.MayerhoferSimon.Vertretungsplan D/Refresh: RefreshService put in Intent: isNextWeek: true
08-04 00:19:41.990  13367-13367/de.MayerhoferSimon.Vertretungsplan D/Refresh: MainActivity.onCreate got: isNextWeek: false

    Intent i = new Intent(this, MainActivity.class);
    i.putExtra(IS_NEXT_WEEK, isNextWeek);
    finish();
    startActivity(i);

总是有false值，我做错了什么？

这样就解决了问题:https://stackoverflow.com/a/18049676/2180161

报价：

PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, PendingIntent.FLAG_CANCEL_CURRENT);

http://developer.android.com/reference/android/app/pendingintent.html#flag_cancel_current

请参阅下面的答案，为什么使用pendingintent.flag_update_current更好。

Answer 1

使用pendingintent.flag_cancel_current不是一个好的解决方案，因为内存的使用效率很低。而是使用PendingIntent.Flag_Update_Current。

同时使用intent.flag_activity_single_top（如果活动已经在历史堆栈的顶部运行，则不会启动该活动）。

Intent resultIntent = new Intent(this, FragmentPagerSupportActivity.class).
                    addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);  
resultIntent.putExtra(FragmentPagerSupportActivity.PAGE_NUMBER_KEY, pageNumber);

PendingIntent resultPendingIntent =
                PendingIntent.getActivity(
                        this,
                        0,
                        resultIntent,
                        PendingIntent.FLAG_UPDATE_CURRENT
                );

然后：

@Override
    protected void onCreate(Bundle savedInstanceState) {
        try {
            super.onCreate(savedInstanceState);

            int startPageNumber;
            if ( savedInstanceState != null)
            {
                startPageNumber = savedInstanceState.getInt(PAGE_NUMBER_KEY);
//so on

@Override
protected void onNewIntent(Intent intent) {
    int startPageNumber;

    if (intent != null) {
        startPageNumber = intent.getExtras().getInt(PAGE_NUMBER_KEY);
    } else {
        startPageNumber = 0;
    }
}