(iOS开发）保存图片方法

// 1. 去图像路径        NSArray *docs = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);        NSString *imagePath = [docs[0]stringByAppendingPathComponent:@"abc.png"];                // 2. 转换成NSData保存        NSData *imageData = UIImagePNGRepresentation(image);        [imageData writeToFile:imagePath atomically:YES];