哇，安卓极客们有好消息了。是时候向旧的方式说再见了。 首先我将添加官方发布说明来阅读和了解更多关于这些方法/类，然后我们将看到这些神奇的方法/类

注意:在这些类/方法发布之前，不要将它们添加到你的发布应用中

如何检查键盘可见性

val insets = ViewCompat.getRootWindowInsets(view)
val isKeyboardVisible = insets.isVisible(Type.ime())

其他用途很少

如何获取键盘的高度

val insets = ViewCompat.getRootWindowInsets(view)
val keyboardHeight = insets.getInsets(Type.ime()).bottom

如何显示/隐藏键盘

val controller = view.windowInsetsController

// Show the keyboard
controller.show(Type.ime())

// Hide the keyboard
controller.hide(Type.ime())

注意:WindowInsetsController是在API-30中添加的，所以要等到向后兼容类不可用。

如何听键盘隐藏/显示事件

ViewCompat.setOnApplyWindowInsetsListener(view) { v, insets ->
    val isKeyboardVisible = insets.isVisible(Type.ime())
    if (isKeyboardVisible) {
        // Do it when keyboard is being shown
    } else {
        // Do it when keyboard is hidden
    }

    // Return the insets to keep going down this event to the view hierarchy
    insets
}

不要编写任何硬代码。最好的方法是，你必须调整你的视图，而Get Focus on EditText与键盘显示。 您可以使用下面的代码将活动上的resize属性添加到清单文件中。

android: windowSoftInputMode = adjustResize”

InputMethodManager有关于软键盘的信息。你从一个活动中获得它:

((InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE))

你可以摆弄一下，看看它能告诉你什么。你可以用它来显示或隐藏软输入…

你可以通过使用活动的decorView来观察软键盘的隐藏。

public final class SoftKeyboardUtil {
    public static final String TAG = "SoftKeyboardUtil";
    public static void observeSoftKeyBoard(Activity activity , final OnSoftKeyBoardHideListener listener){
        final View decorView = activity.getWindow().getDecorView();
        decorView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
            @Override
            public void onGlobalLayout() {
                Rect rect = new Rect();
                decorView.getWindowVisibleDisplayFrame(rect);
                int displayHight = rect.bottom - rect.top;
                int hight = decorView.getHeight();
                boolean hide = (double)displayHight / hight > 0.8 ;
                if(Log.isLoggable(TAG, Log.DEBUG)){
                    Log.d(TAG ,"DecorView display hight = "+displayHight);
                    Log.d(TAG ,"DecorView hight = "+ hight);
                    Log.d(TAG, "softkeyboard visible = " + !hide);
                }

                listener.onSoftKeyBoardVisible(!hide);

            }
        });
    }



    public interface OnSoftKeyBoardHideListener{
        void onSoftKeyBoardVisible(boolean visible);
    }
}

你可以试试这个，对我来说很管用:

InputMethodManager imm = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);

if (imm.isAcceptingText()) {
    //Software Keyboard was shown..
} else {
    //Software Keyboard was not shown..
}

Reuben Scratton和Kachi提供的解决方案似乎依赖于设备的像素密度，如果你有一个高密度的设备，即使按下键盘，高度差也可能超过100。围绕这一点的工作将是看到初始高度差(键盘向下)，然后与当前的差异进行比较。

boolean isOpened = false;
int firstHeightDiff = -1;

public void setListenerToRootView(){
    final View activityRootView = getActivity().getWindow().getDecorView().findViewById(android.R.id.content);
    Rect r = new Rect();
    activityRootView.getWindowVisibleDisplayFrame(r);
    firstHeightDiff = activityRootView.getRootView().getHeight() - (r.bottom - r.top);
    activityRootView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
        @Override
        public void onGlobalLayout() {
            if (isAdded()) {
                Rect r = new Rect();
                activityRootView.getWindowVisibleDisplayFrame(r);
                int heightDiff = activityRootView.getRootView().getHeight() - (r.bottom - r.top);
                isOpened = heightDiff>firstHeightDiff+100;
                if (isAdded())
                    if(isOpened) {
                        //TODO stuff for when it is up
                    } else {
                        //TODO stuf for when it is down
                    }
            }
        }
    });
}