Android 拖动多个不工作的图像

我正在开发一个应用程序，它使用拖放图像，我可以在相对布局中添加任意数量的图像。我可以拖动图像，但一次只能拖动一个。一旦我添加了新图像，所有以前的图像都是不可触摸的

public void addImage(Bitmap bmp)
{
    ivtest= new ImageView(TabletActivity.this);
    if(bmp!=null)
    {
        ivtest.setImageBitmap(bmp);
        rlAddView.addView(ivtest,  new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));

        bmp= null;
    }
    ivtest.setTag("sdjfjd");
    ivtest.bringToFront();
    ivtest.setScaleType(ScaleType.MATRIX);
    ivtest.setOnTouchListener(this);
}

这是我添加新图像的代码。ivtest是一个全局图像视图

public class TestImage extends View  implements OnTouchListener
{
private ScaleGestureDetector mScaleDetector;
private float mScaleFactor = 1.f;
private Drawable mIcon;
private float mLastTouchX;
private static final int INVALID_POINTER_ID = -1;

// The ‘active pointer’ is the one currently moving our object.
private int mActivePointerId = INVALID_POINTER_ID;
 private float mPosX;
    private float mPosY;

    private float mLastTouchY;


public TestImage(Context context, Drawable _micon)
{
    super(context);
     mIcon =_micon; 
     WindowManager wManager= (WindowManager)context.getSystemService(Context.WINDOW_SERVICE);
     mIcon.setBounds((int)getPivotX(), (int)getPivotY(), mIcon.getIntrinsicWidth(),mIcon.getIntrinsicWidth());

//  setOnTouchListener(this);

    mScaleDetector = new ScaleGestureDetector(context, new ScaleListener());

}

 @Override
 public boolean onTouch(View view, MotionEvent ev)
 {

        mScaleDetector.onTouchEvent(ev);

        final int action = ev.getAction();
        switch (action & MotionEvent.ACTION_MASK) {
        case MotionEvent.ACTION_DOWN: 
        {
            final float x = ev.getX();
            final float y = ev.getY();


            mLastTouchX = x;
            mLastTouchY = y;
            mActivePointerId = ev.getPointerId(0);
            break;
        }

        case MotionEvent.ACTION_MOVE: {
            final int pointerIndex = ev.findPointerIndex(mActivePointerId);
            final float x = ev.getX(pointerIndex);
            final float y = ev.getY(pointerIndex);

            // Only move if the ScaleGestureDetector isn't processing a gesture.
            if (!mScaleDetector.isInProgress()) {
                final float dx = x - mLastTouchX;
                final float dy = y - mLastTouchY;

                mPosX += dx;
                mPosY += dy;

                invalidate();
            }

            mLastTouchX = x;
            mLastTouchY = y;

            break;
        }

        case MotionEvent.ACTION_UP: {
            mActivePointerId = INVALID_POINTER_ID;
            break;
        }

        case MotionEvent.ACTION_CANCEL: {
            mActivePointerId = INVALID_POINTER_ID;
            break;
        }

        case MotionEvent.ACTION_POINTER_UP: {
            final int pointerIndex = (ev.getAction() & MotionEvent.ACTION_POINTER_INDEX_MASK) 
                    >> MotionEvent.ACTION_POINTER_INDEX_SHIFT;
            final int pointerId = ev.getPointerId(pointerIndex);
            if (pointerId == mActivePointerId) {
                // This was our active pointer going up. Choose a new
                // active pointer and adjust accordingly.
                final int newPointerIndex = pointerIndex == 0 ? 1 : 0;
                mLastTouchX = ev.getX(newPointerIndex);
                mLastTouchY = ev.getY(newPointerIndex);
                mActivePointerId = ev.getPointerId(newPointerIndex);
            }
            break;
        }
        }

        return true;

}


@Override
public void onDraw(Canvas canvas) {
    super.onDraw(canvas);

    canvas.save();
    canvas.translate(mPosX, mPosY);
    canvas.scale(mScaleFactor, mScaleFactor);
    mIcon.setBounds(0, 0, mIcon.getIntrinsicWidth(),mIcon.getIntrinsicWidth());
    mIcon.draw(canvas);
    canvas.restore();
}

private class ScaleListener extends ScaleGestureDetector.SimpleOnScaleGestureListener {
    @Override
    public boolean onScale(ScaleGestureDetector detector) {
        mScaleFactor *= detector.getScaleFactor();

        // Don't let the object get too small or too large.
        mScaleFactor = Math.max(0.1f, Math.min(mScaleFactor, 5.0f));

        invalidate();
        return true;
    }
}

---

}

在定义

LayoutParams

时，不应使用

FILL\u PARENT

宽度和高度，因为它“覆盖”了布局中的所有其他视图。改用

包装内容。
我找到了答案。这是一个在视图上实现拖放、旋转和缩放的库项目。
代码不足..添加touchlistener和UI快照..@userSeven7s我已编辑代码。这是一个小的变化，因为我正在尝试其他事情。但它涵盖了大部分内容。请使用下面的答案链接来解决此问题，它可能会对您有所帮助。在您的回答中，它们已经有两个静态图像视图。在我的例子中，我是在运行时添加它们的&它们都有相同的标签。@Kamal：我面临着类似的问题。我不知道如何使用
android多点触控控制器
。你能展示你的代码以供参考吗？提前谢谢。请附上您的用户界面截图