Android 缩放和拖动imageview图像时的x和y坐标
嗨, 这是我的缩放和拖动图像的代码。现在我想添加图像时,触摸缩放图像,但我没有得到准确的x和y坐标 请帮助我代码中缺少什么Android 缩放和拖动imageview图像时的x和y坐标,android,coordinates,motion-detection,zooming,Android,Coordinates,Motion Detection,Zooming,嗨, 这是我的缩放和拖动图像的代码。现在我想添加图像时,触摸缩放图像,但我没有得到准确的x和y坐标 请帮助我代码中缺少什么 View.OnTouchListener mTouchListener = new OnTouchListener() { public boolean onTouch(View v, MotionEvent event) { ImageView view = (ImageView) v; switch (event.getAction() &a
View.OnTouchListener mTouchListener = new OnTouchListener() {
public boolean onTouch(View v, MotionEvent event) {
ImageView view = (ImageView) v;
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;
if (flag) {
//When mark button click then flag is true means add another image to display image when touch
mImageView.setImageBitmap(combineImages(mSave, mIcon, event.getX(),
event.getY()));
mSave = combineImages(mSave, mIcon, event.getX(), event.getY());
}
break;
case MotionEvent.ACTION_POINTER_DOWN:
oldDist = spacing(event);
if (oldDist > 10f) {
savedMatrix.set(matrix);
midPoint(mid, event);
mode = ZOOM;
Log.d(TAG, "mode=ZOOM");
}
break;
case MotionEvent.ACTION_UP:
case MotionEvent.ACTION_POINTER_UP:
mode = NONE;
Log.d(TAG, "mode=NONE");
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) {
float newDist = spacing(event);
if (newDist > 10f) {
matrix.set(savedMatrix);
scale = newDist / oldDist;
matrix.postScale(scale, scale, mid.x, mid.y);
}
}
break;
}
view.setImageMatrix(matrix);
return true;
}
};
我也提到了,但不能理解更多
请告诉我我做错了什么。你能放大/缩小吗?@Agarwal:我已经测试了这段代码。此代码在放大/缩小时工作正常,但当我们放大并单击屏幕时会出现问题,精确的x,y坐标不会通过运动事件返回。是的,我可以放大和缩小,也可以滚动,但放大时,我希望x和y坐标并在那里附加新图像。[看一看][1]:我发布了一个代码,可以帮助您。。。