Question

我的问题是我有一个ImageView，我将一个图像设置为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;
    }

对不良英语交流表示抱歉。

先谢谢。

Answer 1

请将图像设置为源。

，而不是setBackgroundImage

ImageView SetImageResource＆amp;调整问题的大小

1 个答案: