如何使用android-Instrumentation进行拖动？

public class DragTest extends InstrumentationTestCase {

    public void testDrag() {
        // 获取 Instrumentation 实例
        Instrumentation instrumentation = getInstrumentation();

        // 获取 Activity 实例
        Activity activity = getActivity();

        // 获取屏幕尺寸
        DisplayMetrics metrics = new DisplayMetrics();
        activity.getWindowManager().getDefaultDisplay().getMetrics(metrics);
        int screenWidth = metrics.widthPixels;
        int screenHeight = metrics.heightPixels;

        // 计算起始和结束点的坐标
        float startX = screenWidth / 2;
        float startY = screenHeight / 2;
        float endX = startX + 200;
        float endY = startY + 200;

        // 模拟触摸事件，按下并移动手指
        MotionEvent downEvent = MotionEvent.obtain(SystemClock.uptimeMillis(), SystemClock.uptimeMillis(), MotionEvent.ACTION_DOWN, startX, startY, 0);
        MotionEvent moveEvent = MotionEvent.obtain(SystemClock.uptimeMillis(), SystemClock.uptimeMillis(), MotionEvent.ACTION_MOVE, endX, endY, 0);
        instrumentation.sendPointerSync(downEvent);
        instrumentation.sendPointerSync(moveEvent);

        // 释放手指
        MotionEvent upEvent = MotionEvent.obtain(SystemClock.uptimeMillis(), SystemClock.uptimeMillis(), MotionEvent.ACTION_UP, endX, endY, 0);
        instrumentation.sendPointerSync(upEvent);

        // 检查是否成功执行拖动操作，可以根据实际情况添加断言
        // assertEquals(expectedResult, actualResult);
    }
}