iOS AFNetworking 图片上传（修改用户头像功能）_ios anetworking上传图片-优快云博客

本文链接：https://blog.youkuaiyun.com/sinat_27310637/article/details/50557073

本文讨论了在处理APP中用户信息时遇到的上传与修改头像问题，并分享了实现过程。包括使用UIImagePickerController从相册选择图片，保存图片至沙盒，以及通过AFNetworking上传至服务器的方法。同时提出了在不同场景下可能出现的问题及解决方案。

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今天在处理APP中用户信息这里，遇到了上传与用户修改头像的问题，在网上查阅一些资料之后完成了，写了一下。贴上来供大家看看。

可以看到在点击上部ImageView 的时候调用相册去选择某张图片。

下面贴出点击图片后代码：

#pragma mark - image picker delegte
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
    [picker dismissViewControllerAnimated:YES completion:^{}];

    UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];

    //01.21 应该在提交成功后再保存到沙盒，下次进来直接去沙盒路径取
    // 保存图片至本地，方法见下文
    [self saveImage:image withName:@"currentImage.png"];
    //读取路径进行上传
    NSString *fullPath = [[NSHomeDirectory() stringByAppendingPathComponent:@"Documents"] stringByAppendingPathComponent:@"currentImage.png"];
    UIImage *savedImage = [[UIImage alloc] initWithContentsOfFile:fullPath];

    isFullScreen = NO;
    self.headImgV.tag = 100;
    [self.headImgV setImage:savedImage];//图片赋值显示

    //进到次方法时 调 UploadImage 方法上传服务端
    **NSDictionary *dic = @{@"image":fullPath}; //重点再次 fullPath 为路径
    [memberMan UploadImage:dic];**
}

这里是上文调用的保存沙盒方法：

#pragma mark - 保存图片至沙盒（应该是提交后再保存到沙盒,下次直接去沙盒取）
- (void) saveImage:(UIImage *)currentImage withName:(NSString *)imageName
{

    NSData *imageData = UIImageJPEGRepresentation(currentImage, 0.5);
    // 获取沙盒目录

    NSString *fullPath = [[NSHomeDirectory() stringByAppendingPathComponent:@"Documents"] stringByAppendingPathComponent:imageName];
    // 将图片写入文件

    [imageData writeToFile:fullPath atomically:NO];
}

这里接第一部分进入上传的方法：

//头像上传
-(void)UploadImage:(NSDictionary *)type
{
    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];

    [manager POST:APIImageUp parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
        //01.21 测试
        NSString * imgpath = [NSString stringWithFormat:@"%@",type[@"image"]];
        //取之前存入沙盒的路径

        UIImage *image = [UIImage imageWithContentsOfFile:imgpath];
        NSData *data = UIImageJPEGRepresentation(image,0.7);
        //这里注意UIImageJPEGRepresentation 详情看下图格式
        NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
        formatter.dateFormat = @"yyyyMMddHHmmss";
        NSString *str = [formatter stringFromDate:[NSDate date]];
        NSString *fileName = [NSString stringWithFormat:@"%@.jpg", str];

        [formData appendPartWithFileData:data name:@"Filedata" fileName:fileName mimeType:@"image/jpg"];

    } success:^(AFHTTPRequestOperation *operation, id responseObject) {
        //成功后处理
        NSLog(@"Success: %@", responseObject);
        NSString * str = [responseObject objectForKey:@"fileId"];
        if (str != nil) {
            [self.delegate uploadImgFinish:str];
        }

    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        NSLog(@"Error: %@", error);
    }];

}

上传后下次进入页面时从沙盒加载图片：

-(void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
//从沙盒拿
        NSString *fullPath = [[NSHomeDirectory() stringByAppendingPathComponent:@"Documents"] stringByAppendingPathComponent:@"currentImage.png"];
        UIImage *savedImage = [[UIImage alloc] initWithContentsOfFile:fullPath];

        [self.headImgV setImage:savedImage];
}