ios - 在相机应用程序中单击使用按钮保存照片

Question

我当前的代码是:

- (IBAction)cameraButtonAction:(id)sender {   
    UIImagePickerController *picker = [[UIImagePickerController alloc] init];
    picker.allowsEditing = NO;
    picker.sourceType = (sender == cameraButton) ? UIImagePickerControllerSourceTypeCamera : UIImagePickerControllerSourceTypeSavedPhotosAlbum;
    [self presentModalViewController:picker animated:YES]; 
}

这会调出默认相机，但是当我选择使用时，它不会保存图片。我已经尝试过:

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary *)editingInfo {
    UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil);
    [self dismissModalViewControllerAnimated:YES];
}

我看过的每个教程，他们都使用 UIImageView 制作自定义相机应用程序，但这不是我想要做的，我不想在应用程序中显示图像并希望保留默认的相机功能。

Answer 1

您的代码是正确的。但你没有设置委托(delegate)

这里缺少一行:

picker.delegate = self;

您需要将其添加到您的 cameraButtonAction 方法中。

- (IBAction)cameraButtonAction:(id)sender
{   
    UIImagePickerController *picker = [[UIImagePickerController alloc] init];
    picker.delegate = self;
    picker.allowsEditing = NO;
    picker.sourceType = (sender == cameraButton) ? UIImagePickerControllerSourceTypeCamera : UIImagePickerControllerSourceTypeSavedPhotosAlbum;
    [self presentModalViewController:picker animated:YES]; 
}