如何在Android中查看软件键盘的可见性？

final View activityRootView = findViewById(R.id.activityRoot);
activityRootView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
    @Override
    public void onGlobalLayout() {
        Rect r = new Rect();
        activityRootView.getWindowVisibleDisplayFrame(r);
        int screenHeight = activityRootView.getRootView().getHeight();
        int keypadHeight = screenHeight - r.bottom;

        if (keypadHeight > screenHeight * 0.15) { // 0.15 ratio is perhaps enough to determine keypad height.
            Log.d("Keyboard", "可见");
        } else {
            Log.d("Keyboard", "隐藏");
        }
    }
});

InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
boolean isKeyboardVisible = imm.isActive();
if (isKeyboardVisible) {
    Log.d("Keyboard", "可见");
} else {
    Log.d("Keyboard", "隐藏");
}

@Override
public void onWindowFocusChanged(boolean hasFocus) {
    super.onWindowFocusChanged(hasFocus);
    if (hasFocus) {
        InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
        boolean isKeyboardVisible = imm.isActive();
        if (isKeyboardVisible) {
            Log.d("Keyboard", "可见");
        } else {
            Log.d("Keyboard", "隐藏");
        }
    }
}