ios 如何知道相机是否完成拍照

Question

我使用图像选择器控制器呈现相机，图像拍摄后进入结束模式，所以我希望代表在相机完成拍照时调用。就像通过 NSNotificationCenter 一样。

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

Answer 1

试试这个：

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleNotification:) name:@"_UIImagePickerControllerUserDidCaptureItem" object:nil ];

Answer 2

UIImagePickerController有一个delegate方法，拍照后调用了

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

ios 如何知道相机是否完成拍照

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