AFNetworking如何向服务器提交图片 ios中获取图片并上传图片

NSURL *url = [NSURL URLWithString:[DATAWEBURL stringByAppendingString:ADDEMAILURL]];

ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url];

NSData *data = UIImagePNGRepresentation(im);//获取图片数据

/*

ios中获取图片的方法有两种，一种是UIImageJPEGRepresentation ，一种是UIImagePNGRepresentation

前者获取到图片的数据量要比后者的小很多。。

*/

NSMutableData *imageData = [NSMutableData dataWithData:data];

[request setPostBody:imageData];

[request setDelegate:self];

[request setDidFinishSelector:@selector(checkUpdateFinished:)];

[request setDidFailSelector:@selector(checkUpdateFailed:)];

[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:YES];

[appDelegate.networkQueue addOperation:request];

[appDelegate.networkQueue go];

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