Android :如何跟踪键盘使用情况

import android.app.Activity;
import android.graphics.Rect;
import android.view.View;
import android.view.ViewTreeObserver;

public class KeyboardVisibilityUtils {

    private final Activity activity;
    private final View rootView;
    private int visibleThreshold = 50; // 可见阈值
    private boolean isKeyboardVisible = false;

    public KeyboardVisibilityUtils(Activity activity) {
        this.activity = activity;
        this.rootView = activity.getWindow().getDecorView().getRootView();
        setupKeyboardVisibilityListener();
    }

    private void setupKeyboardVisibilityListener() {
        rootView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
            @Override
            public void onGlobalLayout() {
                Rect rect = new Rect();
                rootView.getWindowVisibleDisplayFrame(rect);
                int screenHeight = rootView.getRootHeight();
                int keypadHeight = screenHeight - rect.bottom;

                if (keypadHeight > visibleThreshold) {
                    if (!isKeyboardVisible) {
                        isKeyboardVisible = true;
                        onKeyboardVisibilityChanged(true);
                    }
                } else {
                    if (isKeyboardVisible) {
                        isKeyboardVisible = false;
                        onKeyboardVisibilityChanged(false);
                    }
                }
            }
        });
    }

    private void onKeyboardVisibilityChanged(boolean isVisible) {
        // 处理键盘显示或隐藏的逻辑
    }

    public interface KeyboardVisibilityListener {
        void onVisibilityChanged(boolean isVisible);
    }
}