保存图片到沙盒并从沙盒中取出

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• (void)saveImage:(UIImage *)tempImage WithName:(NSString *)imageName

{

NSData * imageData = UIImagePNGRepresentation(tempImage);

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

NSString * documentsDirectory = paths objectAtIndex:0;

// Now we get the full path to the file

NSString * fullPathToFile = documentsDirectory stringByAppendingString:imageName;

// and then we write it out

    imageData writeToFile:fullPathToFile atomically:NO;

//    NSLog(@"路径：%@", NSHomeDirectory() stringByAppendingPathComponent:@"Documents1.png");

// 将存入到沙盒的图片再取出来，目的是为了进行上传

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

NSString * path = fullPathToFile;

// 二进制的数据就可以进行上传

NSData * data = NSData dataWithContentsOfFile:path;

UIImage * image = UIImage imageWithData:data;

self.postImage.image = image;

}