通过通知将变量传递给活动

Question

这是我的代码:

GCMIntentService:

Intent notificationIntent = new Intent(this, MainActivity.class);
notificationIntent.setAction(Intent.ACTION_MAIN);
notificationIntent.addCategory(Intent.CATEGORY_LAUNCHER);
notificationIntent.putExtra("screen", activityToShow);
notificationIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);

PendingIntent intent2 = PendingIntent.getActivity(this, 0, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);

NotificationCompat.Builder nBuilder = 
        new NotificationCompat.Builder(this)
        .setSmallIcon(smallIconToDisplayInGCM)
        .setLargeIcon(largeIconToDisplayInGCM)
        .setContentTitle(title)
        .setContentText(text)
        .setSound(sound)
        .setTicker(ticker)
        .setContentIntent(intent2)
        .setAutoCancel(true);

主要活动:

的onCreate()

onNewIntent(getIntent()) 

onCreate()之外的新方法

@Override
public void onNewIntent(Intent intent){
    Bundle extras = intent.getExtras();
    String tabNumber = "";

    if(extras != null) {
        tabNumber = extras.getString("screen");
        Log.d("TEMP", "Tab Number: " + tabNumber);
        if(tabNumber.equals("") || (tabNumber == null)) {
            // Set the active tab to be the Home Tab  (index = 0)
            mTabHost.setCurrentTab(0);
        } else {
            mTabHost.setCurrentTab(getTabToShow(tabNumber));
        }
    } else {
        mTabHost.setCurrentTab(0);
    }
}

当我点击推送通知时,它甚至没有点击Log.d().

Answer 1

我已经稍微修改了你的代码来进行一些调试:

Intent notificationIntent = new Intent(this, MainActivity.class);
    notificationIntent.setAction(Intent.ACTION_MAIN); 
    notificationIntent.addCategory(Intent.CATEGORY_LAUNCHER);
    notificationIntent.putExtra("screen", "debugScreen"); 
    notificationIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
    NotificationManager nMgr = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    PendingIntent intent2 = PendingIntent.getActivity(this, 0, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);

    NotificationCompat.Builder nBuilder = 
            new NotificationCompat.Builder(this)
            .setSmallIcon(R.drawable.ic_launcher)
            .setContentTitle("Some Title")
            .setContentText("Some text")
            .setContentIntent(intent2)
            .setAutoCancel(true);
    nMgr.notify(0, nBuilder.build());

和onNewIntent方法:

@Override 
public void onNewIntent(Intent intent){ 
    Bundle extras = intent.getExtras(); 
    String tabNumber;

    if(extras != null) {
        tabNumber = extras.getString("screen");
        Log.d("TEMP", "Tab Number: " + tabNumber);

    } else {
        Log.d("TEMP", "Extras are NULL");

    }
}

我可以检查它是否正常工作,并将变量传递给intent中的活动.

我认为您可能做错了的是使用变量activityToShow设置intent数据.考虑到Intent.putExtra(...)是一个重载方法,如果你传递一个Integer,你将无法获得一个String.

我建议您监视activityToShow变量的状态,并向接收器添加一些日志记录,以检查您获得的内容(包括变量类型)以及您在活动中收到的内容.

希望能帮助到你.