Question

我需要执行“发送照片”功能。我有一个Web服务方法，它将图像作为参数。我需要执行以下操作：

用户点击按钮，然后照片库打开（也很酷，可以从相机发送照片，即相机打开用户制作照片，然后发送）用户选择照片并单击发送（然后我的方法应该工作）。

请告诉我有什么办法吗？

Answer 1

- (IBAction)upload:(id)sender {
  imagePickerViewController = [[UIImagePickerController alloc] init];
    imagePickerViewController.delegate = self;
    imagePickerViewController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    [self presentModalViewController:imagePickerViewController animated:YES];

}


  - (void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
    {
        requestType = 8;
        [picker dismissModalViewControllerAnimated:YES];
        // Access the uncropped image from info dictionary
        int seconds = [[NSDate date] timeIntervalSince1970];
        NSString *imageName = [NSString stringWithFormat:@"%d.png", seconds];
        UIImage *image = [info objectForKey:@"UIImagePickerControllerOriginalImage"];
        NSURL *url = [NSURL URLWithString:yourUploadLink];
        ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url];


        NSData* imageData=UIImageJPEGRepresentation(image, 1.0);
        if (imageData) {
            NSLog(@"imageData exists");
        }
        [request setData:imageData withFileName:imageName andContentType:@"image/png" forKey:@"userfile"];
        [request setDelegate:self];
        [request startAsynchronous];

    //    [picker release];
    }

Answer 2

您需要先做一些研究，但我会指导您查看UIImagePickerController：

https://developer.apple.com/library/ios/#documentation/uikit/reference/UIImagePickerController_Class/UIImagePickerController/UIImagePickerController.html

Answer 3

是的，有。您只需使用以下内容构建应用程序：UIImagePicker用于图像选择（相机或库），NSURLConnection用于与您的服务进行通信任务。

您可以从这里开始：Apple iOS Dev Library

如何通过编程方式从库中发送照片？

3 个答案: