How Should I Do From Notification Back To Activity Without New Intent

from Android Development, i implement a simple notification by the sample code, but in my app, i don't want to new intent and create the activity again, i just want to back to my l

Solution 1:

If you want to call the Activity from background try this:

Intentintent=newIntent(this, YourLauncherActivity.class);
    intent.setAction(Intent.ACTION_MAIN);
    intent.addCategory(Intent.CATEGORY_LAUNCHER);

    PendingIntentpendingIntent= PendingIntent.getActivity(this, 0,
            intent, 0);
    mBuilder.setContentIntent(pendingIntent);

If you click the Notification while on Homescreen the last shown Activity of your App will be get to the foreground without starting it new. If the Activity was killed by the system you will get a new Activity.

Solution 2:

I have used PendingIntent.getActivities instead of getActivity. This is working well in my project.

IntentbackIntent=newIntent(this, HomeActivity.class);
                backIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
IntentnotificationIntent=newIntent(this, NextActivity.class);

                finalPendingIntentpendingIntent= PendingIntent.getActivities(this, 1,
                        newIntent[] {backIntent, notificationIntent}, PendingIntent.FLAG_ONE_SHOT);

Solution 3:

For me, this worked :

.setContentIntent(
     PendingIntent.getActivity(
     context,
     0,
     newIntent(context, YOUR_MAIN.class).setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP ),PendingIntent.FLAG_ONE_SHOT))   

FLAG_ONE_SHOT : DO NOT CREATE TWICE (associated with Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP)

Solution 4:

In SingleTop mode, I use this method without define explicitly the root activity class:

Intentintent=newIntent(Intent.ACTION_MAIN).addCategory(Intent.CATEGORY_LAUNCHER)
.setComponent(getPackageManager().getLaunchIntentForPackage(getPackageName()).getComponent());

and this to resume last activity from notification:

builder.setContentIntent(PendingIntent.getActivity(context, 0, intent, 0));

or this to resume last activity from a service:

try {
    PendingIntent.getActivity(this, 0, intent, 0).send();
} catch (CanceledException e) {
    e.printStackTrace();
}