Override Android Back Button?
In general, I would advise against that because it breaks the UX. The user expects the back button to kill the entire window, especially since you are using the tabhost. To the user, the entire bunch (tabs and all) is a single activity that he wants to exit when he hits the back button If you still want to do it, refer to onBackPressed() It is called when the activity has detected the user's press of the back key.
The default is to finish the activity, but you can make it do whatever you want. I advise care and caution You might find some inspiration from here.
In general, I would advise against that because it breaks the UX. The user expects the back button to kill the entire window, especially since you are using the tabhost. To the user, the entire bunch (tabs and all) is a single activity that he wants to exit when he hits the back button.
If you still want to do it, refer to #onBackPressed(). It is called when the activity has detected the user's press of the back key. The default is to finish the activity, but you can make it do whatever you want.
I advise care and caution. You might find some inspiration from here.
I agree with not wanting to break the UX. After thinking about it a little more although it would be convenient and even make sense in my situation. I will have to come up with another method of going back and forth.
– ryandlf Sep 26 at 4:09.
I believe you should be able to do something like this: @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if ((keyCode == KeyEvent. KEYCODE_BACK)) { // start new Activity here } return super. OnKeyDown(keyCode, event); } But overriding the expected functionality of the back button is not advisable.
I think it's a good way to realise a navigation. As long as the visual approach is transparent to the user and the user can trigger the default behavior of a back click when he reaches the start of the navigation (perhaps by a double click - if the user clicks to slow you could shown a toast hint) – Knickedi Sep 26 at 4:11.
Called as part of the activity lifecycle when an activity is going into the background, but has not (yet) been killed. The counterpart to onResume(). When activity B is launched in front of activity A, this callback will be invoked on A.
B will not be created until A's onPause() returns, so be sure toenter code here not do anything lengthy here. This callback is mostly used for saving any persistent state the activity is editing and making sure nothing is lost if there are not enough resources to start the new activity without first killing this one. This is also a good place to do things like stop animations and other things that consume a noticeable amount of CPU in order to make the switch to the next activity as fast as possible, or to close resources that are exclusive access such as the camera.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.
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