在我的项目中，我在视图中有一个UILabel。我必须根据识别器的比例值调整字体大小。如果我直接使用变换视图的框架将不会更新，最终我的文本将不会完全可见。
目前，我正在做以下事情，
CGSize recognizerViewNewSize = [[recognizer view] frame].size;
recognizerViewNewSize.width *= [recognizer scale];
recognizerViewNewSize.height *= [recognizer scale];
CGRect recognizerViewFrame = [[recognizer view] frame];
recognizerViewFrame.size = recognizerViewNewSize;
[[recognizer view] setFrame:recognizerViewFrame];
当缩放视图内的标签时，消失了。有什么问题吗？ 我已经设置了如下标签，
UILabel *label = [[UILabel alloc] initWithFrame:[self bounds]];
[label setText:labelText];
[label setFont:labelFont];
[label setBackgroundColor:[UIColor redColor]];
[label setNumberOfLines:0];
[label setAdjustsFontSizeToFitWidth:YES];
[label sizeToFit];
[label setTextAlignment:NSTextAlignmentCenter];
[label setAutoresizingMask:(UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleBottomMargin | UIViewAutoresizingFlexibleRightMargin)];
[label setUserInteractionEnabled:YES];
CGRect labelFrame = [label frame];
CGRect selfFrame = [self frame];
selfFrame.size = labelFrame.size;
[self setFrame:selfFrame];
[self addSubview:label];
[self setLabel:label];