i have an app that haves a lot of activitys, all created with ONACTIVITYRESULT.which method is called when i press back key? i need to know it because i have to override/implement code on it
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The docs say "The onStart() and onStop() methods can be called multiple times, as the activity alternates between being visible and hidden to the user"When I press the back button an it will go back to the previous activity which totally covers the old one.What is going on here?
View 1 Replies View RelatedI am running into an issue with the way my asynctasks are executed. Here's the problem code:
firstTask = new background().new FirstTask(context);
if(firstTask.execute().get().toString().equals("1"))
secondTask = new background().new SecondTask(context);
What I'm doing here is creating a new asynctask object, assigning it to firstTask and then executing it. I then want to fire off a separate asynctask when the first one is done and making sure it returns a success value (1 in this case). This works perfectly on Android 2.0 and up. However, I am testing with Android 1.5 and problems start popping up. The code above will run the first asynctask but doInBackground() is never called despite onPreExecute() being called. If I am to execute the first task without the get() method, doInBackground() is called and everything works as expected. Except now I do not have a way to determine if the first task completed successfully so that I can tell the second task to execute. Is it safe to assume that this is a bug with asynctask on Android 1.5? Especially since the API says that the get method has been implemented since API 3. Is there any way to fix this? Or another way to determine that the first task has finished?
I'm getting this error ( in the end of this post) which I guess I understand it's because I'm calling something after releasing it.. but I can't find a wy to work it around.I've tried all combinations.. I've tried: mCamera.setPreviewCallback(null); This class, where the surfaceview is implemented can be accessed by 2 different classes one that doesnt implement surfaceview and other that does the error just shows me when I go from the activity that uses the camera to the activity that also uses camera.I don't know what else to do.
View 4 Replies View RelatedIs the onUpgrade method of SQLiteOpenHelper ever called? If so, when is it called and by what? Or if it is not called by developers, then why is it there? What should be done in the method I have seen examples where it drops all the tables, but then a comment says that dropping all the tables is NOT what you should do.
View 1 Replies View RelatedI am new to Android development and have been following the tutorials available on the Android website. I am currently on the section of tutorials for Views, specifically the one for Grid Views: Hello, Grid View Tutorial.I am having trouble understanding how views are made through an adapter. I understand that you must override the getView() method in your adapter class and in this method is where you define how your Views are set up. What I don't understand is where does getView() actually get called? Perhaps I've got the wrong kind of mentality here, but in the code below (the Grid View tutorial) I don't see any calls to getView() (or any other things used in the adapter class such as getCount()).
View 1 Replies View RelatedTrying to the do as the title describes with the following code, but it doesn't seem to work. It just does nothing once i have altered the keyCode. Do i have to do something to the event?
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I'm writing a Tetris application on Android for my bachelor thesis at the University of Hasselt. Currently I have a working Tetris base game, but it just keeps on ticking when the activity gets in the background. I'm trying to fix this by overwriting the onStop()and onRestart()methods.when I press my home button on my device I will go to my home screen and onStop() is called. Because the gamemode is now "PAUSE", the game wil not tick anymore. But now, when I longpress my home button and select my tetris activity again, the activity pops up, but it isn't ticking! This is because the onRestart() is never called when I return to play my application.What is the reason that this method is never called? Am I understanding the activity lifecycle wrong?
View 3 Replies View Relateda service started by a broadcast receiver starts an activity. I want to make it possible for this activity to communicate back to the service. I have chosen to use AIDL to make it possible. Everything seems works good except for bindService() method called in onCreate() of the activity. bindService(), in fact, throws a null pointer exception because onServiceConnected() is never called while onBind() method of the service is. Anyway bindService() returns true.The service is obviously active because it starts the activity.I know that calling an activity from a service could sound strange, but unfortunately this is the only way to have speech recognition in a service.
View 4 Replies View RelatedI'm trying to prevent my application to call the same method twice in the event of a double-click, or if the user presses different buttons quickly, almost at the same time.I have clickable Views, acting as buttons, that call the same method but passing different parameters.Inside this method I'm creating a new Thread, because it queries a web server for the result.The problem is that upon two quick clicks, the method is fired twice, two threads are created, and consequently two new activities are created. That makes my app crash.But this only seems to work on slower phones like the G1, I tried on Nexus and before it set blocked = true, the second request has was granted. So is there any way I can block the method being called if it's already running, or if the thread has started so it wont create a new one.
View 3 Replies View RelatedI was wondering how should I proceed to debug while working with frameworks. Like specifically how can i tell which method is being called when a particular event happens.
View 2 Replies View RelatedI added a BroadCastReceiver to my application.I want to call my inputMethod's method but I can't find a way to access it's instance.but I couldn't find a way to get the the InputMethod instance from the InputMethodManager.Is doing a singleton the only way to access it?
View 1 Replies View RelatedI'm trying to modify the SurfaceView I use for doing a camera preview in order to display an overlaying square. However, the onDraw method of the extended SurfaceView is never called.
View 3 Replies View RelatedFrom the moment I received my HTC Hero from orange several weeks ago I noticed the when I press the back arrow button on the bottom right of the phone its clicks and creaks, dont think its the button itself but its the plastic battery case that makes the sound.
Does anyone else have this problem?
I have some code in the onCreate method an Activity and noticed that it is being called three times. Is it normal behaviour?
View 1 Replies View RelatedIn 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?
View 1 Replies View RelatedI have a ListActivty and I overload the onListItemClick(ListView listView, View view, int position, long id) in my List Activity. My question is why onListItemClick() not getting called back (i have breakpoint in my debugger) when I have an ImageButton in my list item view (the one view created by my list adaptor from cursor)?
View 1 Replies View Relatedi want to trigger the onKeyDown listener programmatically but don't know which method i should call? Does anyone know?
View 3 Replies View RelatedAre there api to support go to back Programmatically i.e same effect as the back button of the phone.
View 5 Replies View RelatedEach time I switch the orientation of the device, onStop() and onDestroy() are called. They are also called when I close the Avtivity (dismiss()), and when I press 'back' key. In onStop() or onDestroy() methods : how can I know how I can here ? I'd like to run some code when I close the Activity (back button), but not if I change screen orientation
View 7 Replies View RelatedI've created a custom PopupWindow but when I press back button, the window doesn't dissapear.
View 3 Replies View RelatedMy application uses GPS updates while it is running and I would like that to stop when the user back out of the app as I assume it will continue wasting a lot of battery power. I've tried intercepting the back button press but it doesn't seem to work. I'm not sure if this is because it's not executing the code or I'm using the wrong command.
CODE:.....................
I am using ViewFlipper for my application. I trying to make it.when user pressed on escape (back) button, it would be back to parent Layout.
View 3 Replies View RelatedI have a weird problem on progress dialog: I have 2 views: Login View and say, Display View. In Login View, when I click the 'Login' button, a progress dialog is created (new ProgressDialog(...)), shown and stored in a variable 'mProgressDialog'. After login, the dialog is dismissed and some information are displayed in Display View (Login View hides). Now I want to display another progress dialog when 'Update' button is clicked and when the update is done, dismiss the dialog and display new information. So I use: the Display View for a blink and then shows the Login View. I tried to change the view etc. but same problem happens over and over again. So I am thinking it might because one activity can only be assigned to ONE progress dialog and no matter how you re-create it you still get the same progress dialog. And the dialog is linked to a certain view which will be shown automatically when the dialog dismisses.
View 8 Replies View RelatedEssentially, what I'd like to do is to be able to press the 'back' button on my Hero to take a picture, rather than pressing the trackball.
View 2 Replies View RelatedWhat are the back,home nd menu bar called in the nexus?
and can i install it on my galaxy s?? GT-I9000
Say you're surfing the web and are on a website like this forum. You then feel like checking a text message or making a call so you go ahead and do that.
How do you get back to the browser that is still running in the background and to the same website you were working on? I hope there's an easy answer and I'm just stupid.
I have installed Tasker and I'm new to using it. My favorite music player is Playerpro, but what I was wondering is what would i need to put in variables or actions, if I wanted to use the volume buttons to press skip or back while the screen is off and i'm using the app.I would use Gravity Box to do so but Cyanogen or any of its tweaks and mods are not compatible with the SM-G730v.
View 1 Replies View RelatedI recently upgraded my htc desire s to the official 3.5 sense version and them to the endymion rom and both have something quite annoying in all browsers I have tried (dolphin, stock and boat browsers).
What happens is pressing back sends me to the top of a web page, meaning I have to press back twice to get to the previous page. It's not a huge deal, just a minor annoyance.
When I press the back button all the way isnt it suppose to close the browser? The web browser still shows as a running app.
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