Disable back button in android

Question

How to disable back button in android while logging out the application

User · Answer

Just override the onBackPressed   method and no need to call the super class of onBackPressed method or others     Override public void onBackPressed          Or pass your current activity into the onBackPressed   method    Override public void onBackPressed        startActivity new Intent this  myActivity class         finish        Replace your require activity name to myActivity   if you are using fragment then first of all call the callParentMethod   method  public void callParentMethod        context onBackPressed       instead of context use getActivity or something related     then call the empty method   Override public void onBackPressed

User · Answer

I am using it                 Override public boolean onKeyDown int keyCode  KeyEvent event        if keyCode  KeyEvent KEYCODE BACK          Toast makeText getApplicationContext     back press              Toast LENGTH LONG  show         return false            Disable back button

User · Answer

if you are using FragmentActivity  then do like this  first call This inside your Fragment   public void callParentMethod        getActivity   onBackPressed        and then Call onBackPressed method in side your parent FragmentActivity class    Override public void onBackPressed         super onBackPressed        create a dialog to ask yes no question whether or not the user wants to exit

User · Answer

For me just overriding onBackPressed   did not work but explicit pointing which activity it should start worked well    Override public void onBackPressed      Intent intent   new Intent this  ActivityYouWanToGoBack class     startActivity intent

User · Answer

If you want to disable your app while logging out  you can pop up a non-cancellable dialog

User · Answer

You just need to override the method for back button  You can leave the method empty if you want so that nothing will happen when you press back button  Please have a look at the code below    Override public void onBackPressed            Your Code Here  Leave empty if you want nothing to happen on back press

User · Answer

Disable back buttton in android   Override public void onBackPressed         return

User · Answer

remove super onBackPressed   from public void onBackPressed   work great  its tested in android 9

User · Answer

Simply override the onBackPressed   method    Override public void onBackPressed

User · Answer

Apart form these two methods from answer above      onBackPressed    API Level 5  Android 2 0       onKeyDown    API Level 1  Android 1 0    You can also override the dispatchKeyEvent   API Level 1  Android 1 0  like this      dispatchKeyEvent    API Level 1  Android 1 0     Override public boolean dispatchKeyEvent KeyEvent event           TODO Auto-generated method stub     if  event getKeyCode      KeyEvent KEYCODE BACK            return true            return super dispatchKeyEvent event

User · Answer

Try this    Override public boolean onKeyDown int keyCode  KeyEvent event     if  keyCode    KeyEvent KEYCODE BACK        return true        return super onKeyDown keyCode  event

User · Answer

You can do this simple way Don t call super onBackPressed    Note - Don t do this unless and until you have strong reason to do it    Override public void onBackPressed        super onBackPressed       Not calling   super    disables back button in current screen

User · Answer

Override the onBackPressed method and do nothing if you meant to handle the back button on the device    Override public void onBackPressed        if  shouldAllowBack             super onBackPressed         else          doSomething

User · Answer

Just using this code  If you want backpressed disable  you dont use super OnBackPressed      Override public void onBackPressed

User · Answer

If you want to make sure your android client application is logged out from some server before your Activity gets killed --  log out with a service on its own thread  that s what you re supposed to do anyway    Disabling the back button won t solve anything for you  You ll still have the same problem when the user receives a phone call for instance  When a phone call is received  your activity has about as much chances of getting killed before it gets a reliable answer back from the network     That s why you should let a service wait on its own thread for the answer from the network  and then make it try again if it doesn t succeed  The android service is not only much less likely to get killed before it gets an answer back  but should it really get killed before finishing the job  it can always get revived by AlarmManager to try again

User · Answer

If looking for a higher api level 2 0 and above this will work great   Override public void onBackPressed            Do Here what ever you want do on back press      If looking for android api level upto 1 6    Override public boolean onKeyDown int keyCode  KeyEvent event         if  keyCode    KeyEvent KEYCODE BACK           preventing default implementation previous to android os Build VERSION CODES ECLAIR      return true              return super onKeyDown keyCode  event           Write above code in your Activity to prevent back button pressed

User · Answer

You can override the onBackPressed   method in your activity and remove the call to super class    Override public void onBackPressed         remove call to the super class     super onBackPressed

[android] Disable back button in android

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