@Override public void onResume() { super.onResume(); getView().setFocusableInTouchMode(true); getView().requestFocus(); getView().setOnKeyListener(new View.OnKeyListener() { @Override public boolean onKey(View view, int i, KeyEvent keyEvent) { if(keyEvent.getAction() == KeyEvent.ACTION_DOWN && i == KeyEvent.KEYCODE_BACK){ Toast.makeText(getActivity(), "按了返回键", Toast.LENGTH_SHORT).show(); return true; } return false; } }); }
kotlin
override fun onResume() { super.onResume() requireView().isFocusableInTouchMode = true requireView().requestFocus() requireView().setOnKeyListener(View.OnKeyListener { view, i, keyEvent -> if (keyEvent.action === KeyEvent.ACTION_DOWN && i == KeyEvent.KEYCODE_BACK) { showHintLogOutDialog() //Toast.makeText(activity, "按了返回键", Toast.LENGTH_SHORT).show() return@OnKeyListener true } false }) }