i具有50个圆形图像(progress-1.png,progress-2.png等),代表圆的进度。如果我想出一个百分比值,我该如何对组的背景图像进行动画以显示该百分比的进度?
您可以使用类似的东西:
// Using a fixed percentage for this example
CGFloat percentage = 0.5f;
NSUInteger totalImages = 50;
NSUInteger imageCount = (totalImages * percentage);
[self.interfaceImage setImageNamed:@"progress-"];
[self.interfaceImage startAnimatingWithImagesInRange:NSMakeRange(0, imageCount)
duration:1.0
repeatCount:1];