Add action to back button

Question

I have an overlay view added to the content view in my app. I want to add an action to the back button to remove this overlay view before then having the default back button functionality. What would be the best way to go about this? Thank you. JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

Answer 1

My solution to this scenario is to make a global indicator of where the user is in the application. For example, consider this (straight from my current project): //... private boolean mInSettingsMode; //... // The button's onclick method. public void onSettingsButtonClick(View v) { mInSettingsMode = true; // Initialize view stuff. } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK) { if (mInSettingsMode) { mInSettingsMode = false; resetToNormalView(); return true; } else { return super.onKeyDown(keyCode, event); } } return super.onKeyDown(keyCode, event); }