back

I have pushed a view onto the navigation controller and when I press the back button it goes to the previous view automatically. I want to do a few things when back button is pressed before popping the view off the stack. Which is the back button callback function? ymutlu William Jockusch's answer solve this problem with easy trick. -(void) viewWillDisappear:(BOOL)animated { if ([self.navigationController.viewControllers indexOfObject:self]==NSNotFound) { // back button was pressed. We know this is true because self is no longer // in the navigation stack. } [super viewWillDisappear:animated];

When I'm using "EditText" I have the virtual keyboard. Pressing first time "Back" button hides the keyboard. Second press invokes "onBackPressed" callback in my activity. OK, but... I have no idea how to hook the very first press. I need to process input data as soon as the virtual keyboard dismissed. Any ideas are welcome. Thanks. Blundell You can override when the keyboard disappears using this method: public boolean onKeyPreIme(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK && event.getAction() == KeyEvent.ACTION_UP) { // Do your thing here return false; } return super

Has anyone been able to get jQuery UI Tabs 3(Latest version) working with the back button? I mean if the user hits the back button they should go to the previously visited tab on the page, not a different page. The history plug in sounds like it can work, but i cant seem to make it work with ajax loaded tabs. If anyone has managed to make this work, it would be deeply appreciated, thanks! Justin Hamade I just ran into this as well. Its really easy with the jquery address plugin here http://www.asual.com/jquery/address/ The demo for tabs seemed a bit over complicated. I just did this: $(

I am now having an activity containing fragments [1] , [2] , [3] , [4] If pressing buttons , [3] , it can be redirected to [4] I would like to implement the back button as shown follow.. when pressing back at [4] , it return to [3] when pressing back at [3] , it return to [2] when pressing back at [1] , the activity finishes(); When it comes to the current implementation, it finish the activity instead of popping up the Fragment. Would you please tell me what I should do or keep in mind ? @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if( keyCode==KeyEvent.KEYCODE_BACK) {

I got an Activity that when it starts, it loads an image from the internet. In an effort to save memory, when the Activity is left by the back button being pressed, I want the activity to dump all data, that is get rid of all the strings and images that are in it. I figured the best way to do this was to just kill the activity. Well, I can't seem to figure out the callback for when the Back button is pressed. So, I have been trying to use the onPause() and the onStop() callbacks for the task but both ways force close my app. Here is the code: public void onPause() { this.finish(); } public

I am developing an application that when the button is pressed, it opens a dialog with OK and Cancel buttons. It works fine. When the user presses the back button, I am handling this as follows public boolean onKeyDown(int keyCode, KeyEvent event) { if ((keyCode == KeyEvent.KEYCODE_BACK)) { } return super.onKeyDown(keyCode, event); } But the above method is not called. How can I handle this? dialog.setOnKeyListener(new Dialog.OnKeyListener() { @Override public boolean onKey(DialogInterface arg0, int keyCode, KeyEvent event) { // TODO Auto-generated method stub if (keyCode == KeyEvent.KEYCODE