/**

 1. 数据获取

 2. 创建Gif文件

 3. 配置Gif属性

 4. 单帧添加到gif

 */

#import <ImageIO/ImageIO.h>

#import <MobileCoreServices/MobileCoreServices.h>

    // 1. 获取数据

    NSMutableArray * imageArrayM = [NSMutableArray arrayWithCapacity:];

    [imageArrayM addObject:[UIImage imageNamed:@"1.png"]];

    [imageArrayM addObject:[UIImage imageNamed:@""]];

    [imageArrayM addObject:[UIImage imageNamed:@""]];

    [imageArrayM addObject:[UIImage imageNamed:@""]];

    [imageArrayM addObject:[UIImage imageNamed:@""]];

    [imageArrayM addObject:[UIImage imageNamed:@""]];

    [imageArrayM addObject:[UIImage imageNamed:@""]];

    [imageArrayM addObject:[UIImage imageNamed:@""]];

    // 2. 创建Gif文件

    NSArray * document = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

    NSString * documentStr = [document objectAtIndex:];

    NSFileManager * fileManager = [NSFileManager defaultManager];

    NSString * textDic = [documentStr stringByAppendingString:@"/gif"];

    [fileManager createDirectoryAtPath:textDic withIntermediateDirectories:YES attributes:nil error:nil];

    NSString * path = [textDic stringByAppendingString:@"test1.gif"];

    NSLog(@"path: %@",path);

    // 3. 配置gif属性

    CGImageDestinationRef destion;

    // 将path映射成url对象

    CFURLRef url = CFURLCreateWithFileSystemPath(kCFAllocatorDefault, (CFStringRef)path, kCFURLPOSIXPathStyle, false);

    destion = CGImageDestinationCreateWithURL(url, kUTTypeGIF, imageArrayM.count, NULL);

    NSMutableDictionary * dictM = [NSMutableDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithFloat:0.3],(NSString *)kCGImagePropertyGIFDelayTime, nil];

    NSDictionary * frameDic = [NSDictionary dictionaryWithObject:dictM forKey:(NSString *)kCGImagePropertyGIFDelayTime];

    NSMutableDictionary * gifParaDict = [NSMutableDictionary dictionaryWithCapacity:];

    // 设置颜色

    [gifParaDict setObject:[NSNumber numberWithBool:YES] forKey:(NSString *)kCGImagePropertyGIFHasGlobalColorMap];

    // 设置模式

    [gifParaDict setObject:(NSString *)kCGImagePropertyColorModelRGB forKey:(NSString *)kCGImagePropertyColorModel];

    // 设置颜色深度

    [gifParaDict setObject:[NSNumber numberWithInt:] forKey:(NSString *)kCGImagePropertyDepth];

    // 是否可以重复播放

    [gifParaDict setObject:[NSNumber numberWithInt:] forKey:(NSString *)kCGImagePropertyGIFLoopCount];

    NSDictionary * gifProperty = [NSDictionary dictionaryWithObject:gifParaDict forKey:(NSString *)kCGImagePropertyGIFDictionary];

    // 单帧添加到gif

    for (UIImage * dImage in imageArrayM) {

        CGImageDestinationAddImage(destion, dImage.CGImage, (__bridge CFDictionaryRef)frameDic);

    }

    CGImageDestinationSetProperties(destion, (__bridge CFDictionaryRef)gifProperty);

    CGImageDestinationFinalize(destion);

    CFRelease(url);

    CFRelease(destion);