用简书一年多了，一直都是转载和收藏，一直都没有原创，今天下一篇自己的文章。
昨天经理让自己封装一个可看到上传进度的方法，自己就找了找并结合自己的项目搞定了。
先粘代码：
/**
上传图片，进度可见，
@param dic post请求的body，除图片外其余上传参数；
@param path 上传路径url；
@param imagedata 要上传的图片；
@param success 上传成功回调block；
@param failure 上传失败回调block；
@param ProgressBlock 上传进度回调block，第一个参数（totalBytesWritten）已上传字节数，第二个参数（totalBytesExpectedToWrite）要上传的总字节数。
*/
#pragma mark - 上传图片 进度可见
+ (void)uploadFileActionWithBody:(NSDictionary *)dic
andPath:(NSString *)path
andImage:(UIImage *)imagedata
success:(void (^)(id responseObject))success
failure:(void (^)(AFHTTPRequestOperation *operation, NSError *error))failure
UploadProgressBlock:(void (^)(long long totalBytesWritten,
long long totalBytesExpectedToWrite))ProgressBlock
{
//先判断网络
Reachability *reach = [Reachability reachabilityForInternetConnection];
NetworkStatus status = [reach currentReachabilityStatus];
if (status == NotReachable) {
[[CommomBlackTips alloc]blackAlert:@"当前网络不可用\n请检查网络设置"];
return;
}
// 0. 将图片压缩
NSData *imageData = UIImageJPEGRepresentation(imagedata, 1);
// 1. Create `AFHTTPRequestSerializer` which will create your request.
AFHTTPRequestSerializer *serializer = [AFHTTPRequestSerializer serializer];
// 2. Create an `NSMutableURLRequest`.
NSMutableURLRequest *request =
[serializer multipartFormRequestWithMethod:@"POST" URLString:path
parameters:dic
constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
[formData appendPartWithFileData:imageData
name:@"file" //这里是图片对应的参数，跟后台商量好
fileName:@"text.jpg" //一个图片的时候可以写死，多个图片一起上传不能写死
mimeType:@"image/jpeg"];
}];
// 3. Create and use `AFHTTPRequestOperationManager` to create an `AFHTTPRequestOperation` from the `NSMutableURLRequest` that we just created.
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
AFHTTPRequestOperation *operation =
[manager HTTPRequestOperationWithRequest:request
success:^(AFHTTPRequestOperation *operation, id responseObject) {
success(responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
failure(operation, error);
}];
// 4. Set the progress block of the operation.
[operation setUploadProgressBlock:^(NSUInteger __unused bytesWritten,
long long totalBytesWritten,
long long totalBytesExpectedToWrite) {
// NSLog(@"Wrote %lld/%lld", totalBytesWritten, totalBytesExpectedToWrite);
//上传进度
ProgressBlock(totalBytesWritten , totalBytesExpectedToWrite);
}];
// 5. Begin!
[operation start];
}
其实很简单，AFN内部提供了上传文件时的回调方法，有专门的方法查看已上传部分的大小（字节）。
下面这个方法会一直回调，直到上传成功，也就是totalBytesWritten（已上传部分字节数） 和 totalBytesExpectedToWrite（总字节数）相等之后。
//就是这个方法
setUploadProgressBlock:^(NSUInteger __unused bytesWritten,
long long totalBytesWritten,
long long totalBytesExpectedToWrite)
下面是我调用的demo：
UITextField *nicheng = [infomationTableView viewWithTag:1001];
UITextField *name = [infomationTableView viewWithTag:1002];
UITextField *company =[infomationTableView viewWithTag:1003];
UITextField *duty = [infomationTableView viewWithTag:1004];
UITextField *worktime = [infomationTableView viewWithTag:1005];
NSString *nickname =[NSString stringWithFormat:@"%@", [NSString stringWithFormat:@"%@" ,nicheng.text]];
NSString *realname =[NSString stringWithFormat:@"%@", [NSString stringWithFormat:@"%@",name.text]];
NSString *userbirth =[NSString stringWithFormat:@"%@",[NSString stringWithFormat:@"%@", birthStr]];
NSString *usercompany =[NSString stringWithFormat:@"%@", [NSString stringWithFormat:@"%@",company.text]];
NSString *userduty =[NSString stringWithFormat:@"%@", [NSString stringWithFormat:@"%@", duty.text]] ;
NSString *userworktime = [NSString stringWithFormat:@"%@", [NSString stringWithFormat:@"%@", worktime.text]];
NSMutableDictionary *params = [[NSMutableDictionary alloc]initWithCapacity:0];
[params setObject:nickname forKey:@"nickName"];
[params setObject:realname forKey:@"name"];
[params setObject:sexStr forKey:@"sex"];
[params setObject:userbirth forKey:@"birthday"];
[params setObject:usercompany forKey:@"enterprise"];
[params setObject:userduty forKey:@"post"];
[params setObject:userworktime forKey:@"workLife"];
//上面是除了图片外其他参数，比如上传个人资料的时候除了头像还有姓名，学校，身份证号啥的，可有可无（params可为空）。下面是方法调用。
[RequestRelatedClass uploadFileActionWithBody:params andPath:INTERNET_personalData andImage:headerImage success:^(id responseObject) {
NSLog(@"上传成功 = %@",responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(@"上传失败 = %@",error.description);
} UploadProgressBlock:^(long long totalBytesWritten, long long totalBytesExpectedToWrite) {
NSLog(@"Wrote %lld/%lld", totalBytesWritten, totalBytesExpectedToWrite);
}];
注释：
1、请求之前判断网络，用到了Reachability这个类，百度可以查到，用的时候#import "Reachability.h"；
2、因为我们项目较早，用的是AFN2.0，但是AFN2.0不支持ipv6，建议大家用AFN3.0，其实AFN3.0的上传进度方法更简单；
3、有不足之处请大神指正。
