Android - Avoiding an activity to destroy, just stopping or pausing it when pushing the back button

问题:

I would like to pausing or putting the application on background when pressing the back button, I don't want the application to go through the destroy state. Things are when I override onKeyDown and when I force to pause or stop the application by using onPause, I have some issuees with the wakelock and application crash, but when I press home button I go through onPause method and I have no exception, it's weird!!

回答1:

Try to use the method onBackPressed(), like this:

@Override public void onBackPressed() {     moveTaskToBack(true); } 

回答2:

The answer is

public boolean onKeyDown(int keyCode, KeyEvent event) {      if (keyCode == KeyEvent.KEYCODE_BACK)     {         moveTaskToBack(true);         return true; // return     }      return false; } 

回答3:

@Override public void onBackPressed() {     if(mWebView.canGoBack())         mWebView.goBack();     else         //super.onBackPressed();         moveTaskToBack(true);  } 

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