一、GIF分解成uiimageView

import <ImageIO/ImageIO.h>

import <MobileCoreServices/MobileCoreServices.h>

• (void)deCompsitionGif{
  //1.拿到GIF数据
  NSString *path = [[NSBundle mainBundle] pathForResource:@"78" ofType:@"gif"];
  NSData *data = [NSData dataWithContentsOfFile:path];
  CGImageSourceRef sourse = CGImageSourceCreateWithData((__bridge CFDataRef)data, NULL);
  //2.将GIF分解一帧帧
  size_t count = CGImageSourceGetCount(sourse);
  //NSLog(@"count: %@d",count);

  NSMutableArray *imageSources = [NSMutableArray array];
  self.imageSources = imageSources;

  for (NSInteger index = 0; index < count; index++) {

    CGImageRef imageRef = CGImageSourceCreateImageAtIndex(sourse, index, NULL);
    
    UIImage *image = [UIImage imageWithCGImage:imageRef scale:[UIScreen mainScreen].scale orientation:UIImageOrientationUp];
    
    [imageSources addObject:image];
    
    CGImageRelease(imageRef);
  

  }

  CFRelease(sourse);

  int i = 0;
  for (UIImage *image in imageSources) {

    NSData *data = UIImagePNGRepresentation(image);
    
    NSArray *path = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *gifPath = path[0];
    NSString *pathnum = [gifPath stringByAppendingString:[NSString stringWithFormat:@"%d.png",i]];
    i++ ;
    [data writeToFile:pathnum atomically:NO];
  

  }
  }

二播放GIF

• (void)showGifEvent{

NSMutableArray *imageTemp = [NSMutableArray array];
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(100, 100, 120, 120)];
[self.view addSubview:imageView];

for (NSInteger index = 0; index < 2; index++) {
    UIImage *image = self.imageSources[index];
    [imageTemp addObject:image];
}

[imageView setAnimationImages:imageTemp];
[imageView setAnimationRepeatCount:MAXFLOAT];
[imageView setAnimationDuration:1];
[imageView startAnimating];

}