How to disable android hardware buttons programmatically?

Question

I am developing android application with lock functionality. please suggest me how to disable all the hard keys programatically. here i am using beleow code to disable back

Answer 1

for back button (in activity or fragment)

@Override
    public void onBackPressed() {
}

Answer 2

Override home button in android/ Disable home button in android/Stay on your activity while clicking home button in android

 @Override
    public void onAttachedToWindow(){ 
        Log.i("TESTE", "onAttachedToWindow");
        this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD);
        super.onAttachedToWindow(); 
    }
    public boolean onKeyDown(int keyCode, KeyEvent event){
        if (keyCode == KeyEvent.KEYCODE_HOME) {
            Log.i("TESTE", "BOTAO HOME");
            return true;
        }
        return super.onKeyDown(keyCode, event);   
    }

Answer 3

  @Override

public boolean onKeyDown(int keyCode, KeyEvent event) {

switch( event.getKeyCode() ) {

     case KeyEvent.KEYCODE_MENU:
         result = true;
        break;

    case KeyEvent.KEYCODE_VOLUME_UP:
         result = true;
        break;
    case KeyEvent.KEYCODE_VOLUME_DOWN:
        result = true;
        break;
    case KeyEvent.KEYCODE_BACK:
        result = true;
        break;
     default:
        result= super.dispatchKeyEvent(event);
        break;
 }

 return result;
}

and check this also