如何將UIImage或NSData轉換爲字節數組併發布到服務器？

Question

如何將UIImage或NSDate轉換爲字節數組併發布到服務器。 在我的應用程序中，我必須將UIImage轉換爲字節數組，我必須發佈。

對於我以後使用的ASIFormDataRequest。

我的代碼是：

NSUInteger len = [self.dataImage length]; 
Byte *byteData= (Byte*)malloc(len); //converting date to byte array 
[self.dataImage getBytes:byteData length:len]; 


ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:[NSURL URLWithString:urlStr]]; 
    [request setRequestMethod:@"POST"]; 


[request addData:self.dataImage withFileName:@"Image.png" andContentType:@"image/png" forKey:@"photo"]; 
[request setDelegate:self]; 
[request startAsynchronous]; 

Answer 1

嘗試這樣，

NSData *imageData = UIImagePNGRepresentation(self.dataImage ,0.1); 
ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:[NSURL URLWithString:urlStr]]; 
    [request setRequestMethod:@"POST"]; 


[request addData:imageData withFileName:@"Image.png" andContentType:@"image/png" forKey:@"photo"]; 
[request setDelegate:self]; 
[request startAsynchronous]; 

Answer 2

我解決了這個替換

  [request addData:imageData withFileName:@"Image.png" andContentType:@"image/png" forKey:@"photo"]; 

與

 [request appendPostData:self.dataImage];