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我的应用程序中有两个图像选择器。我已经正确地完成了第一个。用户可以从库中选择或拍摄照片并在视图中查看。但是当我尝试复制代码并将其粘贴并更改操作和对象名称时，我在两行出现错误。

    -(IBAction)TakePhoto {

    picker = [[UIImagePickerController alloc] init];
    picker.delegate = self;
    [picker setSourceType:UIImagePickerControllerSourceTypeCamera];
    [self presentViewController:picker animated:YES completion:NULL];

}

-(IBAction)ChooseExisting

{
    picker2 = [[UIImagePickerController alloc] init];
    picker2.delegate = self;
    [picker2 setSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
    [self presentViewController:picker2 animated:YES completion:NULL];

}

-(void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info

{
    image = [info objectForKey:UIImagePickerControllerOriginalImage];
    [imageView setImage:image];
    [self dismissViewControllerAnimated:YES completion:NULL];
}
-(void) imagePickerControllerDidCancel:(UIImagePickerController *)picker {

    [self dismissViewControllerAnimated:YES completion:NULL];
}

//the following part is the renamed part


-(IBAction)TakePhoto2 {

 picker3 = [[UIImagePickerController alloc] init];
 picker3.delegate = self;
 [picker3 setSourceType:UIImagePickerControllerSourceTypeCamera];
 [self presentViewController:picker3 animated:YES completion:NULL];

 }

 -(IBAction)ChooseExisting2

 {
 picker4 = [[UIImagePickerController alloc] init];
 picker4.delegate = self;
 [picker4 setSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
 [self presentViewController:picker4 animated:YES completion:NULL];
  }
ERROR HERE !!-(void) imagePickerController:(UIImagePickerController *)picker3 didFinishPickingMediaWithInfo:(NSDictionary *)info

{
    image2 = [info objectForKey:UIImagePickerControllerOriginalImage];
    [imageView2 setImage:image2];
    [self dismissViewControllerAnimated:YES completion:NULL];
}
ERROR HERE !!!-(void) imagePickerControllerDidCancel:(UIImagePickerController *)picker3 {

    [self dismissViewControllerAnimated:YES completion:NULL];
}

对于两个“（void）”si得到这个错误：方法ImagePickerControllerDidcancel和ImagePickerControllerdidFinishPickingMediaWithINfo的重复声明

如果您能为我修复代码，那就太好了。谢谢

谢谢你的帮助，如果我的英语不够好，我很抱歉

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1 回答 1

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-(void) imagePickerController:(UIImagePickerController *)picker3 didFinishPickingMediaWithInfo:(NSDictionary *)info;

-(void) imagePickerControllerDidCancel:(UIImagePickerController *)picker3;

以上都是 的代表 UIImagePickerController。

它们在控制器类中只能存在一次。

注意：更改参数名称不会更改方法声明。

于 2013-06-25T15:49:56.143 回答