捏uiimageView图像质量低

Question

下面的代码工作完美，但是当捏图像质量不好时。我查了很多帖但没找到任何解决方案。这里我没有使用scrollview，想要没有Scrollview的解决方案。请帮助我。

这是我的代码：

  -(void)handlePinch:(UIPinchGestureRecognizer *)recognizer
   {

      UIGestureRecognizerState state = [recognizer state];

      CGFloat lastScale = [recognizer scale];


     if(state == UIGestureRecognizerStateBegan) {
    // Reset the last scale, necessary if there are multiple objects with different scales
        lastScale = [recognizer scale];floatValue];
     }

    if ([recognizer state] == UIGestureRecognizerStateBegan ||
        [recognizer state] == UIGestureRecognizerStateChanged) {


        CGAffineTransform transform = CGAffineTransformScale([[recognizer view] transform], [recognizer scale], [recognizer scale]);
        [recognizer view].transform = transform;

        recognizer.scale = 1.0;
    }

    if ([recognizer state] == UIGestureRecognizerStateEnded){

        lastScale = [recognizer scale];  // Store the previous scale factor for the next pinch gesture call

    }
 }

请帮助我什么，我必须改变，我错了。

Answer 1

缩放时图像的质量总是会变差，因此如果您想保持初始质量，则需要更大的图像。