高仿Tom猫--(性能最优版) - 黑马程序员技术交流社区

//播放动画效果的方法
- (void)playAnimationWithCount:(int)count andPrefixName:(NSString *)name{
if(self.imgView.isAnimating){
return;
}
NSMutableArray *imgArray = [NSMutableArray array];
for (int i = 0; i < count; i++) {
NSString *imgName = [NSString stringWithFormat:@"%@_%02d.jpg",name,i];
NSString *imgPath = [[NSBundle mainBundle] pathForResource:imgName ofType:nil];
UIImage *image = [UIImage imageWithContentsOfFile:imgPath];
UIImage *newImage = [self getImage:image andSize:[UIScreen mainScreen].bounds.size];
[imgArray addObject:newImage];
}
self.imgView.animationImages = imgArray;
self.imgView.animationDuration = count * 0.1;
self.imgView.animationRepeatCount = 1;
[self.imgView startAnimating];
//必须把创建的数组,在播放动画完成后,置为nil,进行释放.
[self.imgView performSelector:@selector(setAnimationImages:) withObject:nil afterDelay:count * 0.1];
}
//在子线程中完成对图片的重采集
- (UIImage *)getImage:(UIImage *)image andSize:(CGSize)size{
UIGraphicsBeginImageContext(size);
CGRect imageRect = CGRectMake(0, 0, size.width, size.height);
[image drawInRect:imageRect];
UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return newImage;
}

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