iOS图片存在本地、再从本地获取图片

图片存在本地、再从本地获取图片

//将图片保存到本地 + (void)SaveImageToLocal:(UIImage*)image Keys:(NSString*)key {     NSUserDefaults* preferences = [NSUserDefaults standardUserDefaults];     //[preferences persistentDomainForName:LocalPath];     [preferences setObject:UIImagePNGRepresentation(image) forKey:key]; }   //本地是否有相关图片 + (BOOL)LocalHaveImage:(NSString*)key {     NSUserDefaults* preferences = [NSUserDefaults standardUserDefaults];     //[preferences persistentDomainForName:LocalPath];     NSData* imageData = [preferences objectForKey:key];     if (imageData) {         return YES;     }     return NO; }   //从本地获取图片 + (UIImage*)GetImageFromLocal:(NSString*)key {     NSUserDefaults* preferences = [NSUserDefaults standardUserDefaults];     //[preferences persistentDomainForName:LocalPath];     NSData* imageData = [preferences objectForKey:key];     UIImage* image;     if (imageData) {         image = [UIImage imageWithData:imageData];     }     else {         NSLog(@"未从本地获得图片");     }     return image; }