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
}

就计算机而言，这是永远的问题，但这个问题仍然令人难以置信地相关! 所以我把上面的答案结合起来，做了一些改进……

public interface OnKeyboardVisibilityListener {
    void onVisibilityChanged(boolean visible);
}

public final void setKeyboardListener(final OnKeyboardVisibilityListener listener) {
    final View activityRootView = ((ViewGroup) getActivity().findViewById(android.R.id.content)).getChildAt(0);
    activityRootView.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() {

        private boolean wasOpened;

    private final Rect r = new Rect();

        @Override
        public void onGlobalLayout() {
            activityRootView.getWindowVisibleDisplayFrame(r);

            int heightDiff = activityRootView.getRootView().getHeight() - (r.bottom - r.top);
            boolean isOpen = heightDiff > 100;
            if (isOpen == wasOpened) {
                logDebug("Ignoring global layout change...");
                return;
            }

            wasOpened = isOpen;
            listener.onVisibilityChanged(isOpen);
        }
    });
}

这对我很管用。

就计算机而言，这是永远的问题，但这个问题仍然令人难以置信地相关!

所以我把上面的答案结合起来，做了一些改进……

public interface OnKeyboardVisibilityListener {


    void onVisibilityChanged(boolean visible);
}

public final void setKeyboardListener(final OnKeyboardVisibilityListener listener) {
    final View activityRootView = ((ViewGroup) getActivity().findViewById(android.R.id.content)).getChildAt(0);

    activityRootView.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() {

        private boolean wasOpened;

        private final int DefaultKeyboardDP = 100;

        // From @nathanielwolf answer...  Lollipop includes button bar in the root. Add height of button bar (48dp) to maxDiff
        private final int EstimatedKeyboardDP = DefaultKeyboardDP + (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP ? 48 : 0);

        private final Rect r = new Rect();

        @Override
        public void onGlobalLayout() {
            // Convert the dp to pixels.
            int estimatedKeyboardHeight = (int) TypedValue
                    .applyDimension(TypedValue.COMPLEX_UNIT_DIP, EstimatedKeyboardDP, activityRootView.getResources().getDisplayMetrics());

            // Conclude whether the keyboard is shown or not.
            activityRootView.getWindowVisibleDisplayFrame(r);
            int heightDiff = activityRootView.getRootView().getHeight() - (r.bottom - r.top);
            boolean isShown = heightDiff >= estimatedKeyboardHeight;

            if (isShown == wasOpened) {
                Log.d("Keyboard state", "Ignoring global layout change...");
                return;
            }

            wasOpened = isShown;
            listener.onVisibilityChanged(isShown);
        }
    });
}

对我有用:)

注意: 如果你注意到DefaultKeyboardDP不适合你的设备播放的值，并发表评论，让每个人都知道应该是什么值…最终我们将得到适合所有设备的正确值!

要了解更多细节，请查看Cyborg上的实现

这段代码工作得很好

根视图使用这个类:

public class KeyboardConstraintLayout extends ConstraintLayout {

private KeyboardListener keyboardListener;
private EditText targetEditText;
private int minKeyboardHeight;
private boolean isShow;

public KeyboardConstraintLayout(Context context) {
    super(context);
    minKeyboardHeight = getResources().getDimensionPixelSize(R.dimen.keyboard_min_height);
}

public KeyboardConstraintLayout(Context context, AttributeSet attrs) {
    super(context, attrs);
    minKeyboardHeight = getResources().getDimensionPixelSize(R.dimen.keyboard_min_height);
}

public KeyboardConstraintLayout(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);
    minKeyboardHeight = getResources().getDimensionPixelSize(R.dimen.keyboard_min_height);
}

@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    if (!isInEditMode()) {
        Activity activity = (Activity) getContext();
        @SuppressLint("DrawAllocation")
        Rect rect = new Rect();
        getWindowVisibleDisplayFrame(rect);

        int statusBarHeight = rect.top;
        int keyboardHeight = activity.getWindowManager().getDefaultDisplay().getHeight() - (rect.bottom - rect.top) - statusBarHeight;

        if (keyboardListener != null && targetEditText != null && targetEditText.isFocused()) {
            if (keyboardHeight > minKeyboardHeight) {
                if (!isShow) {
                    isShow = true;
                    keyboardListener.onKeyboardVisibility(true);
                }
            }else {
                if (isShow) {
                    isShow = false;
                    keyboardListener.onKeyboardVisibility(false);
                }
            }
        }
    }
    super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}

public boolean isShowKeyboard() {
    return isShow;
}

public void setKeyboardListener(EditText targetEditText, KeyboardListener keyboardListener) {
    this.targetEditText = targetEditText;
    this.keyboardListener = keyboardListener;
}

public interface KeyboardListener {
    void onKeyboardVisibility (boolean isVisible);
}

}

在activity或fragment中设置键盘监听器:

    rootLayout.setKeyboardListener(targetEditText, new KeyboardConstraintLayout.KeyboardListener() {
    @Override
    public void onKeyboardVisibility(boolean isVisible) {

    }
});

我使用了与鲁班的答案略有不同的答案，事实证明在某些情况下更有帮助，特别是在使用高分辨率设备时。

final View activityRootView = findViewById(android.R.id.content);
activityRootView.getViewTreeObserver().addOnGlobalLayoutListener(
        new OnGlobalLayoutListener() {
            @Override
            public void onGlobalLayout() {
                int heightView = activityRootView.getHeight();
                int widthView = activityRootView.getWidth();
                if (1.0 * widthView / heightView > 3) {
                    //Make changes for Keyboard not visible
                } else {
                    //Make changes for keyboard visible
                }
            }
        });

视图#setOnApplyWindowInsetsListener可以用来获得窗口insets回调

public void setOnApplyWindowInsetsListener(OnApplyWindowInsetsListener listener) {
    getListenerInfo().mOnApplyWindowInsetsListener = listener;
}

//OnApplyWindowInsetsListener
public WindowInsets onApplyWindowInsets(View v, WindowInsets insets);

boolean keyboardVisible = insets.isVisible(WindowInsets.Type.ime())可以给出可见性状态。