In my app, i created a custom notification that contain a button that show recent apps(instead of home button long press)
when user open main activity and press home button to go to home screen then drag the notification drawer and click on the button:
Desired result is that the recent apps are shown and the main activity is one of the recent apps.
Actual result is that the recent apps are shown but the main activity is not in them and the main activity resumes.
My code to start "RecentApps (is a dummy class that show recent apps)" class with pending intent
Intent recentAppIntent = new Intent(getBaseContext(), RecentApps.class);
PendingIntent pendingrecentAppIntent = PendingIntent.getActivity(getBaseContext(), 1, recentAppIntent, 0);
notificationView.setOnClickPendingIntent(R.id.recentAppButt, pendingrecentAppIntent);
I think that the problem is getBaseContext, so when the main activity is alive and not finished the recent apps are shown but with context is the main activity.
I tried getApplication and getApplicationContext but not working.
I also tried to use flags for "recentAppIntent" but it is not working, It is a half solution to use
recentAppIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
but it not what i need.
So, my question is "How to finish the main activity in which the pending intent starts".
Thanks in advance, Mostafa
You need to ensure that your MainActivity and your RecentApps don't belong to the same task. The "Recent apps" doesn't actually show recent apps. It shows recent tasks.
To make sure that your RecentApps isn't in the same task as your MainActivity, you can add the following to the <activity> definition in the manifest for RecentApps:
aandroid:taskAffinity=""
Also, when creating the notification, add FLAG_ACTIVITY_NEW_TASK to the Intent, like this:
Intent recentAppIntent = new Intent(getBaseContext(), RecentApps.class);
recentAppIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
PendingIntent pendingrecentAppIntent = PendingIntent.getActivity(getBaseContext(), 1, recentAppIntent, 0);
notificationView.setOnClickPendingIntent(R.id.recentAppButt, pendingrecentAppIntent);
I think FLAG_ACTIVITY_CLEAR_TOP will help as a flag.
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
Explanation for Intent flags are available here: link
Related
This is the code I use to create the PendingIntent for my notification.
Intent notificationIntent = new Intent(context, Activity1.class);
PendingIntent myIntent = PendingIntent.getActivity(context, 0,notificationIntent, 0);
This PendingIntent launches Activity1 when the notification is click.
How can I simply reopen the app and go to the most recent Activity (as though clicking on the launcher icon) instead of launching a new Activity when the notification is clicked?
Activity1 is just an example. I have multiple Activity in the app. I just want to reopen the app and go to the most recent Activity
NOTE: this looks like wrong design for me, because notification should allow user to enter activity that is in context with the notification.
Technically, you can create redirecting activity and your notification intent should launch it when tapped. In its onCreate() you check what activity you want user to be redirected (you can keep this info in SharedPreferences, and each activity would write this info in onCreate() (or make that in your base class if you have it). Then in redirector you call regular startActivity() to go last activity and call finish() to conclude your redirector. Moreover, your redirector activity does not need any layout so add
android:theme="#android:style/Theme.NoDisplay"
to its Manifest entry (of course you also need no call to setContentView())
create Activity1 as a singletask activity , by changing the launchMode of the activity to singleTask...
set your activity to launchMode="singleTop" in your Manifest.xml then use this code instead of what you are using above to reopen the active one:
Title = "YourAppName";
Text = "open";
notificationIntent = new Intent(this, Activity1.class);
cIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
notification.setLatestEventInfo(getApplicationContext(), Title, Text, cIntent);
You can change the android:launchMode in the manifest file for the activity targeted by the pending intent.
Typically, you can use singleTop, which will reuse the same instance when the targeted activity is already on top of the task stack (i.e.: Activity is shown before you left your app).
You can also consider SingleTask and SingleInstance, if you want to keep only a single instance of the activity.
I'm developing an android application, and in one activity, when the user presses the HOME button, a notification appears. Upon pressing the notification the activity would resume from where it left off. The problem is that the activity is recreated each time. Upon pressing the notification onDestroy() and then onCreate() is called. But say if I reopen the activity through the "Recent apps" it resumes successfully.
This question has been asked before on stackoverflow and I have tried the answers provided and none of them seem to work. The API that I'm using is the latest 4.4. The options I have tried are:
Playing around with the Intent flags
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP| Intent.FLAG_ACTIVITY_SINGLE_TOP);
Setting the activity to singleInstance and singleTask
How can I mimic the intent that is sent when I open my activity through 'Recent apps'?
EDIT: One more caveat that might be important. There's 3 activities in my program A B C. When clicking on the launcher icon activity A is first started. The notification is created only when going from activity C to Home. I'm trying to resume activity C.
Problem solved.
I was debugging the application through LogCat and looking at the intents that were being generated by the ActivityManager. Whenever I was changing the flags of the Intent, I wouldn't see the change in LogCat. So
02-12 11:26:39.586: I/ActivityManager(766): START u0 {flg=0x1000c000 cmp=com.example.app/.controllers.Activity3 bnds=[0,153][1080,345]} from pid -1
Changing the Intent flags didn't change the flg variable in the log. Apart from this, the notification image was staying in the Status bar, my app wasn't destroying it. What I did was add the PendingIntent.FLAG_CANCEL_CURRENT flag to the PendingIntent I was sending:
Intent intent = new Intent(this, Activity3.class);
intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0,
intent, PendingIntent.FLAG_CANCEL_CURRENT);
mBuilder.setContentIntent(pendingIntent);
So the problem was an incorrect PendingIntent that I must have created before, that was never being removed. Now I'm able to resume the activity by clicking the notification. Hope this helps someone that might have a similar issue.
I am experiencing a weird behavior on my android application. When I open my application, I see my DashboardActivity, then I hit home button or back button and my application closes. This is ok. Then I receive a push message and with this push message I create a notification. The notification works fine, I click the notification and it opens my activity, using the code below:
Intent notificationIntent = new Intent(context, BookingOfferActivity.class);
notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
Bundle b = new Bundle();
b.putSerializable("booking", booking);
notificationIntent.putExtras(b);
PendingIntent contentIntent = PendingIntent.getActivity(context, 0, notificationIntent, 0);
Then I execute some task in this BookingOfferActivity activity and call the method finish() to make sure this activity will be finished no matter what. Then I open my application again, but instead of seeing the DashboardActivity I am still seeing BookingOfferActivity.
I have tried the solution proposed here:
Prevent new activity instance after clicking on notification
but it just doesnt work.
Is there a way to force my application to always open on the DashboardActivity?
Thanks
T
That is strange behaviour considering you are calling finish()
Try setting
android:noHistory="true"
android:launchMode="singleInstance"
in the manifest for the BookingOfferActivity
i don't know exactly, but u can try to finish all activities in onStop() method.
in onResume() method start your DashboardActivity.
Try removing SINGLE_TOP from your intent. CLEAR_TOP should be all you want.
From the Android Developer documentation
FLAG_ACTIVITY_SINGLE_TOP -> If set, the activity will not be launched if
it is already running at the top of the history stack.
I am having problems launching my application from my widget when it's clicked upon.
Here is a cut of some code
// Create an Intent to launch activity
Intent intent = new Intent(context, Entry_MainTabView.class);
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);
updateViews.setOnClickPendingIntent(R.id.Widget, pendingIntent);
Now take the scenario.
I launch my app, exit to the home page , then click on my widget.
It launches a second instance of the application, so when I hit "back" , the application goes away and reveals the other copy. I then hit back again and finally go back to the homescreen.
How can I make the Intent only create a new instance if none already exists in ram ?
Have you looked at singleInstance and singleTask launch modes of an activity? This extract from Pro Android 2 indicates that there is no documented way of ensuring that there is only one instance of the widget running.
I've got an Android App Widget that when clicked uses a PendingIntent to start an Activity, which the main Application associated with the App Widget also uses. After the user is done with the Activity started from the App Widget, and presses the back button, the user is taken to the Activity on the top of the MAIN application Activity stack. I'd like the back button to take the user back to the Android desktop/home screen.
In short, I'd like separate Activity stacks for my App Widget and Application. Not sure why Android wants to combine these.
This is what I've got now in the App Widget and it's not working. Neither Intent.FLAG_ACTIVITY_CLEAR_TOP or Intent.FLAG_ACTIVITY_NEW_TASK seems to have any impact on the stack.
Intent intent = buildWidgetIntent(context, info);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
PendingIntent pendingIntent = PendingIntent.getActivity(context,
mRequestCode++, intent, PendingIntent.FLAG_UPDATE_CURRENT);
Thanks for any help with this one.
I haven't faced this exact situation, but Intent.FLAG_ACTIVITY_NO_HISTORY is what I needed to make my widget-launched Activity always go Back to the Home screen.