Question

感谢您的阅读，这是我的问题。我试图保存图片（我使用UIImagePickerController方法拍摄）虽然我有一个错误。错误是“不响应选择器图像：didFinishSavingWithError：contextInfo：”

我在其他地方已经读过将实例方法更改为类方法（但我是菜鸟，不知道这意味着什么。）这是我的代码：D。

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



// Access the uncropped image from info dictionary
UIImage *image = [info objectForKey:@"UIImagePickerControllerOriginalImage"];

// Save image 
UIImageWriteToSavedPhotosAlbum(image, self, @selector(image:didFinishSavingWithError:contextInfo:), nil);
}

我被告知这与UIImageWriteToSavedPhotosAlbum方法中的“Self”有关。

Answer 1

使用此代码保存您选择的图片：

 -(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info 
{
 UIImage *image = [info objectForKey:@"UIImagePickerControllerOriginalImage"];
 UIImageWriteToSavedPhotosAlbum(image,self,  
                                   @selector(image:finishedSavingWithError:contextInfo:),
                                   nil);
}

并添加此功能。

- (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo: (void *)contextInfo
{
if (error != nil) 
 {
    NSLog(@"Image Can not be saved");
 } 
 else 
 {
    NSLog(@"Successfully saved Image");
 }
}

Answer 2

您的类（self）不响应选择器 image：didFinishSavingWithError：contextInfo：。您应该实现此选择器。像这样的东西

- (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo
{
    if (error != nil) {
        NSLog(@"Couldn't save image");
    } else {
        NSLog(@"Saved image");
    }
}

不响应选择器图像：didFinishSavingWithError：contextInfo：

2 个答案: