Android :: Does OnActivityResult Get Called When An Activity Is Recreated
Sep 30, 2009
I have a flow A->B->C->D where A desires some information that is obtained by D. B, C, and D propagate the data back through the flow using setResult(RESULT_OK, data) and finish(). All intents in A, B, and C are started with startActivityForResult. However, if B is reclaimed by Android and forced to call onCreate again after C finishes onActivityResult in B is never called and the data never makes it back to A. Is there a way I can be sure that onActivityResult will be called?
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Aug 5, 2010
The order is:
A: startActivityForResult( B ) B: <dostuff>, call finish() A: onCreate <---- what's this all about A: onActivityResult
This happens for a tiny minority of users. I havn't been able to reproduce or find any common elements. A is the launch activity.
CODE:..............
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Jun 23, 2010
I have faced with issue about startActivityForResult() and onActivityResult(). If child activity started by the startActivityForResult() exit by unexpected exception the onActivityResult() is not called and I have no any ideas how can I handle this to get application working in a fail-safe manner ?
When my code runs child activity with startActivityForResult() it awaits until onActivityResult() will be invoked to get working further, but onActivityResult() is not calling and my code is "hang- up" (logically).
So the question is how can I handle all possible ways the child activity is finished (normally and by unexpected exception) to get fail-safe code ?
I have check the documentation for this issue but have found nothing relating issue.
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Jul 6, 2010
I have a problem with the method "onActivityResult".
I create a new Activity from my main activity:
CODE:.........
The new Activity is ended like this:
CODE:.............
But the Method onActivityResult seem to be not called
CODE:................
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Jul 21, 2010
I'll be brief. I have an application with the following Activities Schema:
A (ActivityGroup) | |__
B (Activity Group) | | | |__
C (Activity) | |__ ... (Other Activities) | |__
D (ListActivity) | | | |__
ListView with a custom adapter with two buttons per row
All the Activities shown on the "diagram" are displayed and visible in real time while the application is being executed.
I'm pushing new list elements from C to the ListView in D. And by clicking each row's buttons I'm trying to edit the data of the row by means of a dialog. The problem is when, in the dialog activity, I perform the setResult() and finish(); the D's onActivityResult() is never called, and I do not know why.
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May 4, 2009
I am updating some code from 1.1 to run with the new SDK 1.5. I noticed that onActivityResult is being called before OnRestart.
If Activity A calls activity B. Activity A goes to onPause(), then onStop(). Activity B goes on... finishes and returns.
Activity A starts at onActivityResultf(). So if you try to make a clean exit with onStop(), it will cause nullPointers when it comes back.
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Jul 3, 2010
OnActivityResult is giving me major headaches. My little game has a title / menu screen. Upon clicking "new game" an Activity is launched which creates a SurfaceView for my game world.
When playing, the player can enter buildings in the game world. Upon entering a building I launch the activity for that particular building from my SurfaveView.
Here is an example:
CODE:............
mMap is the SurfaceView. I'm passing a bundle containing the state of the player. In onActivityResult I grab the bundle returned by the store activity and update the player state.
CODE:................
mSavedPlayer is later used to set the new player state.
All the above works generally
I can enter stores, buy stuff, leave and the player is updated correctly.
The problem manifests when I press the Home button (or someyimes back button) and onDestroy gets called. My onDestroy method does nothing besides call super.onDestroy();
After onDestroy() gets called onActivityResult no longer gets called.
So:
1) I play the game, everthing works great.
2) I press home and ondestroy is called
3) relaunch my game via launcher icon
4) Resume game. I can still enter and leave stores but onActivityResult is no longer called.
Here is some logcat output. I'm logging each time I enter a relevant method.
CODE:................................
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Nov 28, 2010
I have the following issue. I am starting a recognizer intent activity in order to detect speech using the "startActivityForResult" method. I have also an "onActivityResult" method listening for results from the recognizer activity. It works and it detects my speech. The problem is that it is only called when everything is ok or when i cancel the operation, but it is not called if it doesn't find a matching text "RecognizerIntent.RESULT_NO_MATCH" or in the rest of wrong cases "RecognizerIntent.RESULT_........" What is happening? Application is Android 2.1 and I have tested on a Android 2.2 device.
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Jun 13, 2010
In my TabActivity the user may be asked to switch to browser activity for OAuth phase, and if the phase takes too much time, my activity will be killed. After the user switches back to my activity, its onCreate() method is invoked again and tabs are recreated.
So I would like to know if there is any simple way to switch back to previous tab, and keep the tab as what it was. For example, one of the tab views contains a ViewSwitcher child, and I want to switch back to the switched view after recreating the activity.
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Feb 3, 2009
Can you please tell me if you know how to get the Andorid unit test instrementation to call my activity's onActivityResult()?
I can't find anything here: http://code.google.com/android/reference/android/app/Instrumentation.
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Jul 30, 2009
I have a notification that starts my activity and passes a messages using the intent's putExtra() function. The message is then displayed to the user in the activity's onCreate function. When the application is restarted due to a orientation change, the message is shown again as it is still in the intent's bundled data.
How can I remove the extra data?
I tried the following:
Bundle bundle = getIntent().getExtras();
if (bundle.getBoolean("showMessage")) {
// ... show message that is in bundle.getString("message")
// remove message
bundle.remove("showMessage");
}
But the message will still be shown after the orientation changed, seems like the intent used is not the one I changed, but the original one. The only workaround I found is to save the showMessage additionally in onSaveInstanceState(). Is there another way? Or is this the way to go?
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Jun 8, 2010
I have an application, which (for the sake of simplicity) has two types of activities - Overview and DetailView. The Overview activity shows a list of steps and allows the user to start a DetailView activity corresponding to the step chosen.
In the DetailView activity, the user can start another Overview, which shows different steps than the ones in the parent of the current DetailView.
In the Overview, DetailView is started by using startActivityForResult (). In the DetailView, when the user decides to start a second Overview, I call setResult () and finish () and then start the new Overview. In this scenario, onActivityResult () and finishFromChild () do not fire. Instead, they fire when the parent finishes (?).
Code from Overview:
CODE:....
Code from DetailView:
CODE:..........................
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Jul 26, 2010
How can I make sure I only retain one copy of an activity on the stack when called from non-activity? When called from an activity I can just add the FLAG_ACTIVITY_REORDER_TO_FRONT flag to the Intent, but how can I do this from e.g. a widget or a notification?
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Jul 9, 2010
I have a Contact Activity which is derived from ListActivity, which displays list of contacts, and on click of item, a new Activity Message Activity derived from ListActivity is initialized.Now I know, I can pack some information in Bundle and pass it before creating activity, but is there a way I can get instance of "ContactActivity" in onCreate method of "MessageActivity"?
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Dec 3, 2009
I need be able to tell if Activity.onStop() was called because my application is moving to a new activity, or if it was closed because the user pressed the "Home" key or hit the back button from the bottom of the activity stack.The reason is because I need to know when it is appropriate to shut off music that is playing in my application (A game). There is nothing more annoying than hitting home and having something playing music in the background.However, Activity.OnStop() is called for each activity change, and I don't want to suspend music when moving between multiple activities in my app. I just can't find a way to differentiate between going home and going to a internal activity.Am I perhaps hooking into the wrong events?
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May 8, 2010
I have three simultaneous instances of an AsyncTask for download three files. When two particular ones finish, at the end of onPostExecute() I check a flag set by each, and if both are true, I call startActivity() for the next Activity.
I am currently seeing the activity called twice, or something that resembles this type of behavior. Since the screen does that 'swipe left' kind of transition to the next activity, it sometimes does it twice (and when I hit back, it goes back to the same activity). It's obvious two versions of the activity that SHOULD only get called once are being put on the Activity stack.
Could this be from both onPostExecute()s executing simultaneously and both checking the flags each other set at the exact same time? This seems extremely unlikely since two processes would have to be running line-by-line in parallel...
A lot removed from this question since I was way off in what I thought was wrong. Nonetheless I found the answer here quite useful, so I have edited the question to reflect the useful parts.
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Jun 26, 2009
I start an IMAGE_CAPTURE Intent like this, and my activity's onActivityResult() get called: Intent i = new Intent (android.provider.MediaStore.ACTION_IMAGE_CAPTURE, null); i.putExtra("return-data", true);
startActivityForResult(i, PICK_ICON_FROM_CAMERA_ID);
But, if I start my Intent like this, the Capture Image Intent did get called, but my activity's onActivityResult() never get called:
Intent i = new Intent (android.provider.MediaStore.ACTION_IMAGE_CAPTURE, null); i.putExtra(MediaStore.EXTRA_OUTPUT, Uri.parse("file:/" + "MyTestFile")); i.putExtra("outputFormat", Bitmap.CompressFormat.PNG.name());
startActivityForResult(i, PICK_ICON_FROM_CAMERA_ID);
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Mar 4, 2010
I have a problem with the activity lifecycle specifically on Nexus One (2.1 running on emulator works fine). If I just create a simple empty Activity with no special launchModes that logs the calls on the onStart and onStop methods, this is what I see: - launch app: onStart called; - home button: onStop NOT called; - launch app: onStart NOT called; - home button: onStop NOT called: and so on. Sometimes if I press the back button then the onStop is not called, but the when i launch the activity again the onStart is called and right after the onStop is called. Similar results with different launchModes. What is going on? Can anyone confirm this?
i found an android issue for the problem here: http://code.google.com/p/android/issues/detail?id=6094 and a similar thread here http://groups.google.com/group/android-developers/browse_thread/threa.
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Feb 17, 2010
I'm not sure why onPause() is not called in the following scenario.
Here's my activity:
CODE:.......................
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Mar 29, 2009
I launch my TestWebView activity. After my web page is loaded, I put the app in the background by pressing the Home key. Then I bring the TestWebActivity back to the foreground. Unexpectedly, TestWebView's onCreate() is called when I bring the activity to the foreground. But onDestroy is never called. This same thing happens every time I tested. It appears the old TestWebView was not completely killed so there are possibly duplicate web clients running.
My code: .....
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Oct 1, 2010
In my android app I call the voice recognition in my onCreate method of my startup activity. I have made it a preference to start up with the voice control or not. However, the app takes about 5-7 seconds to load when voice recognition is on. When it is off, the app starts almost instantly. Below is sample code, I have added Free_Form, max_results 1, and a custom prompt to mine.Why would calling the normal android speech recognition take sooo long to load in my OnCreate method?
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Sep 1, 2010
I have a singleton in an activity. When I end my application (like pressing back button), and start it again after some time, the singleton is not recreated, but is holding previous state. Singleton is not destroyed if the application is destroyed? Do I have to null its static members in onDestroy() to avoid memory leak.
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Nov 17, 2010
I have an activity (say activity A) which displays video using a mediaplayer, rendered in a surfaceview.
The use case is to pause the video, start another activity (say activity B), then come back to activity A.
Activity A is stopped but not destroyed when going to B, which is good.
The surface view (since not visibile) IS destroyed (as observed from the notification callbacks). When coming back to activity A, and restarting the mediaplayer using start(), the media player does play back the audio, but video is not seen. Errors like this one are output on Logcat:
CODE;......
Unfortunately, using the new instance of SurfaceHolder as provided by surfaceCreated() doesn't help (i.e. provides the same error).
I have read in various posts a solution would be to reset the mediaplayer and restart it completely, however it is not efficient, as the end user would have to wait for the whole player preparation cycle + seekTo last position within the stream.
As shown with the fact the audio plays back, it should be a matter of plumbing between the the video decoder and the new surfaceholder/view.
What should be the best solution (best = fastest) to resume video playback when resuming the activity?
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Aug 28, 2010
I have an app that uses a database. At startup I check to see if my tables are missing and if so I create them. Works great.
I've noticed that if I "adb uninstall" then the next time I run my app the tables are created again (this is what I need), but what about when updating through the marketplace?
I'm in the process of releasing an update, and I've made major changes to the tables. I'd like it if the tables were completely wiped and re-created, in fact my app needs this to happen. If someone updates and has the old tables then there will be a force close. Does anyone know the specifics of this scenario?
My tables are only for lookup, I store no user data so I dont really care about losing data on the updates.
Of course I know an option is to use some type of "version" table and check to see if I need to manually drop and create, but I was wondering if that was even needed.
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Sep 4, 2010
My app fc when activity that's using SurfaceView as content view calls startActivityForResult(...) and activity that has been started calls finish()
This does not happen if I change content view to something else than SurfaceView.
This would be the requested logcat:
CODE:..................
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Jan 26, 2010
I am trying to show custom alert from onActivityResult. I need to inflate it, so am getting context with getApplicationContext() and everything is fine until I execute alertDialog.show() - then it fails with: Unable to add window -- token null is not for an application Do you know why I cannot do it?
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Dec 31, 2009
I am facing with a problem related startActivityForResult()
To start SecondActivity from FirstActivity :
CODE:.............
And handles result :
CODE:..........
To send the message to FirstActivity from SecondActivity :
in SecondActivity :
CODE:............
I can't handle the result on onActivityResult in FirstActivity. It never works for my application.
My OS is : 1.5
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Aug 13, 2010
My app requires a network connection so if they don't have one enabled I prompt them to start it. I do this by calling the Wireless & Network settings Activity as such:
CODE:...............
However, when I run my app in the debugger, onActivityResult is called immediately as my calling activity is exited when it should be called once the settings menu if exited. This premature call also sends a resultCode of Activity.RESULT_CANCEL.
Here is the code from onActivityResult:
CODE:.....................
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Sep 17, 2010
I am using two intent for various action in my activity and i also used onActivityResult for get result,i want to answer for how to get tow intent result in onActivityResult?anybody knows please give sample code for me..
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Jul 27, 2010
CODE:...................
The circle not show.....but when i put the DrawO() next to mSurfaceHolder01.addCallback(EX10_04.this);
It draw a circle!
If i want to draw a circle in the onActivityResult event
What shuld i do?
Or if i can pass uri to onClick function ?
CODE:..................................
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