Android在放大视图后查找视图

import android.graphics.Matrix;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.ScaleGestureDetector;
import android.view.View;
import android.widget.ImageView;
import androidx.appcompat.app.AppCompatActivity;

public class ZoomActivity extends AppCompatActivity {

    private ImageView imageView;
    private Matrix matrix = new Matrix();
    private ScaleGestureDetector scaleGestureDetector;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_zoom);

        imageView = findViewById(R.id.imageView);
        imageView.setScaleType(ImageView.ScaleType.MATRIX);

        scaleGestureDetector = new ScaleGestureDetector(this, new ScaleListener());

        imageView.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                scaleGestureDetector.onTouchEvent(event);
                return true;
            }
        });
    }

    private class ScaleListener extends ScaleGestureDetector.SimpleOnScaleGestureListener {
        @Override
        public boolean onScale(ScaleGestureDetector detector) {
            float scaleFactor = detector.getScaleFactor();
            matrix.postScale(scaleFactor, scaleFactor, detector.getFocusX(), detector.getFocusY());
            imageView.setImageMatrix(matrix);
            return true;
        }
    }

    // 示例：在放大后查找特定视图
    private void findViewAfterZoom() {
        // 假设我们要查找一个ID为R.id.detailView的视图
        View detailView = findViewById(R.id.detailView);
        if (detailView != null) {
            // 执行一些操作，例如改变其可见性或内容
            detailView.setVisibility(View.VISIBLE);
        }
    }
}

RectF rect = new RectF(0, 0, imageView.getWidth(), imageView.getHeight());
matrix.mapRect(rect);
// 使用转换后的rect进行视图查找或操作