Question

android怎么监听返回键等等按键？

Answer 1

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
/* 返回键 */
if (keyCode == KeyEvent.KEYCODE_BACK) {
toast("Back");
}else if (keyCode == KeyEvent.KEYCODE_MENU) {
toast("Menu");
} else if (keyCode == KeyEvent.KEYCODE_SEARCH) {
toast("Search");
} else if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN) {
toast("down");
} else if (keyCode == KeyEvent.KEYCODE_VOLUME_UP) {
toast("UP");
}
return false;
}