ImageView SetImageResource＆Resizing Problem

Question

我的问题是我有一个ImageView，我设置了一个图像作为Imageview的setBackgroundResource，然后在图像的触摸事件中不执行旋转，放大，缩小。

以下是我的触摸事件代码： -

@Override 
    public boolean onTouch(View v, MotionEvent event) { 
     // TODO Auto-generated method stub 
     if (v == mImageViewMask) { 

      System.out.println("Vande Mataram"); 
      mImageViewMask = (ImageView) v; 
      r = Math.atan2(event.getX() - mImageViewMask.getWidth()/2, 
        mImageViewMask.getHeight()/2 - event.getY()); 
      rotation = (int) Math.toDegrees(r); 

      switch (event.getAction() & MotionEvent.ACTION_MASK) { 

      case MotionEvent.ACTION_DOWN: 

       savedMatrix.set(matrix); 
       start.set(event.getX(), event.getY()); 
       Log.d(TAG, "mode=DRAG"); 
       mode = DRAG; 
       break; 

      case MotionEvent.ACTION_POINTER_DOWN: 

       oldDist = spacing(event); 
       Log.d(TAG, "oldDist=" + oldDist); 
       if (oldDist > 10f) { 

        savedMatrix.set(matrix); 
        midPoint(mid, event); 
        mode = ZOOM; 
        Log.d(TAG, "mode=ZOOM"); 
       } 
       break; 

      case MotionEvent.ACTION_MOVE: 

       if (mode == DRAG) { 
        matrix.set(savedMatrix); 

        matrix.postTranslate(event.getX() - start.x, event.getY() 
          - start.y); 
       } else if (mode == ZOOM) { 
        updateRotation(rotation); 
        newDist = spacing(event); 
        Log.d(TAG, "newDist=" + newDist); 
        if (newDist > 10f) { 

         matrix.set(savedMatrix); 
         scale = newDist/oldDist; 
         matrix.postScale(scale, scale, mid.x, mid.y); 
        } 
       } 
       break; 

      case MotionEvent.ACTION_UP: 
      case MotionEvent.ACTION_POINTER_UP: 

       mode = NONE; 
       Log.d(TAG, "mode=NONE"); 
       break; 
      } 

      // Perform the transformation 

      mImageViewMask.setImageMatrix(matrix); 
     } 
     return true; 
    } 

对不起，我英文不好沟通。

在此先感谢。

Answer 1

而不是setBackgroundImage，请设置图像作为源。