如果調(diào)用相機(jī),相冊請查看??這里:
http://www.itdecent.cn/p/4384efc6fb04

調(diào)用上傳圖片方法

 [self postRequestWithURL:@"URL地址" picFileName:@"boris.png" dataimage:@"相冊或相機(jī)返回的圖片" andparameters:@"請求的參數(shù)(例如用戶id)" andBlock:^(NSDictionary * _Nonnull retDic, NSError * _Nonnull error) {
            if ((YES)) {
             //請求成功
            }
        }];

#pragma makr -- 上傳圖片到服務(wù)器
static NSString * const FORM_FLE_INPUT = @"file";//字段名  根據(jù)接口命名
-(void)postRequestWithURL: (NSString *)url picFileName: (NSString *)picFileName
 dataimage:(UIImage *)image andparameters:(NSMutableDictionary *) dic
 andBlock:(void(^)(NSDictionary *retDic,NSError *error))block
{
    NSString *TWITTERFON_FORM_BOUNDARY = @"AaB03x";

    NSMutableURLRequest * request = [NSMutableURLRequest requestWithURL:
    [NSURL URLWithString:url]   cachePolicy:
    NSURLRequestReloadIgnoringLocalCacheData   timeoutInterval:10];

    NSString *MPboundary=[[NSString alloc]initWithFormat:@"--%@",TWITTERFON_FORM_BOUNDARY];
    NSString *endMPboundary=[[NSString alloc]initWithFormat:@"%@--",MPboundary];

    NSData* data;
    NSMutableString *body=[[NSMutableString alloc]init];
   //參數(shù)的集合的所有key的集合,注意此處,注意此處
   NSArray *keys = @[@"file",@"P"];

    //遍歷keys
    for(int i=0;i<[keys count];i++){
        //得到當(dāng)前key
        NSString *key=[keys objectAtIndex:i];
        //如果key不是imgfile，說明value是字符類型，比如name：Boris
        if(![key isEqualToString:@"file"])
        {
            //得到當(dāng)前key
            NSString *key=[keys objectAtIndex:i];
            //添加分界線，換行
            [body appendFormat:@"%@\r\n",MPboundary];
            //添加字段名稱，換2行
            [body appendFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n",key];
            //添加字段的值
            NSData *datadic=[NSJSONSerialization 
            dataWithJSONObject:dic   options:NSJSONWritingPrettyPrinted error:nil];
            NSString *jsonStr=[[NSString alloc]initWithData:datadic encoding:NSUTF8StringEncoding];
            [body appendFormat:@"%@\r\n",jsonStr];
        }
    }
    //添加文件
    [body appendFormat:@"%@\r\n",MPboundary];
 
    //聲明pic字段，文件名為boris.png
    [body appendFormat:@"Content-Disposition: form-data; name=\"%@\";
    filename=\"%@\"\r\n",FORM_FLE_INPUT,picFileName];
    //聲明上傳文件的格式
    [body appendFormat:@"Content-Type:image/png\r\n\r\n"];
 
    //聲明結(jié)束符：--AaB03x--
    NSString *end=[[NSString alloc]initWithFormat:@"\r\n%@",endMPboundary];
    //聲明myRequestData，用來放入http body
    NSMutableData *myRequestData=[NSMutableData data];
    
    //將body字符串轉(zhuǎn)化為UTF8格式的二進(jìn)制
    [myRequestData appendData:[body dataUsingEncoding:NSUTF8StringEncoding]];
    //將image的data加入
    [myRequestData appendData:data];
    
    //加入結(jié)束符--AaB03x--
    [myRequestData appendData:[end dataUsingEncoding:NSUTF8StringEncoding]];
    
    //設(shè)置HTTPHeader中Content-Type的值
    NSString *content=[[NSString alloc]initWithFormat:@"multipart/form-data; boundary=%@",TWITTERFON_FORM_BOUNDARY];
    //設(shè)置HTTPHeader
    [request setValue:content forHTTPHeaderField:@"Content-Type"];
    //設(shè)置Content-Length
    [request setValue:[NSString stringWithFormat:@"%lu", (unsigned long)[myRequestData length]] forHTTPHeaderField:@"Content-Length"];
    //設(shè)置http body
    [request setHTTPBody:myRequestData];
    [request setHTTPMethod:@"POST"];
    [NSURLConnection sendAsynchronousRequest:request  queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {
        if (data) {
            NSDictionary* json = [NSJSONSerialization
                                  JSONObjectWithData:data
                                  options:kNilOptions
                                  error:&connectionError];
            block(json,nil);
        }else{
            block(nil,connectionError);
        }
    }];
}

這段代碼如有雷同,是我抄襲,我也不知道抄的哪;