android Edittext 监听软键盘弹出显示和消失隐藏

etCardNumber.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
Rect r = new Rect();
etCardNumber.getWindowVisibleDisplayFrame(r);
int screenHeight = etCardNumber.getRootView().getHeight();
int heightDifference = screenHeight - (r.bottom);
if (heightDifference > 200) {
//软键盘显示
Log.e("TAG", "mIsSoftKeyboardShowing 显示");
} else {
//软键盘隐藏
Log.e("TAG", " mIsSoftKeyboardShowing 隐藏");
}
}
});