UIImagePickerController异常：“源类型必须是UIImagePickerControllerSourceTypeCamera”

问题描述：

这是什么问题？我真的不明白的UIImagePickerController一些重要的零件....UIImagePickerController异常：“源类型必须是UIImagePickerControllerSourceTypeCamera”

这里的源：

 UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init]; 
imagePickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; 
imagePickerController.cameraCaptureMode = UIImagePickerControllerCameraCaptureModePhoto;   
imagePickerController.delegate = self; 
[self presentModalViewController:imagePickerController animated:YES]; 
[imagePickerController release];

我不能打开照片库？任何帮助表示赞赏！

答

如果您正在使用照片库，是否需要设置cameraCaptureMode？

那是原因，10倍！ – Danail 2010-09-11 15:36:59

其他特性会导致类似的故障，例如cameraViewTransform – dpjanes 2012-05-16 12:28:56

答

if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) { 

    imagePickerController = [[UIImagePickerController alloc] init]; 
    imagePickerController.delegate = self; 
    imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera; 

     if([UIImagePickerController isCameraDeviceAvailable:UIImagePickerControllerCameraDeviceFront]) { 

      imagePickerController.cameraDevice = UIImagePickerControllerCameraDeviceFront; 
     } else { 
      imagePickerController.cameraDevice = UIImagePickerControllerCameraDeviceRear; 
     } 

    [self presentModalViewController:imagePickerController animated:YES]; 
    [imagePickerController release]; 
} 
else { 
    // do stuff ///....Alert 
}

答

也许不是你的情况，但是当你initalize你的UIImagePickerController对象，首先你需要设置，否则任何其他属性，你得到同样的错误前将源类型。

let imagePickerController = UIImagePickerController() 
imagePickerController.sourceType = UIImagePickerControllerSourceType.Camera 
imagePickerController.cameraCaptureMode = 
UIImagePickerControllerCameraCaptureMode.Photo 
imagePickerController.cameraDevice = .Front 
imagePickerController.showsCameraControls = true; 
imagePickerController.navigationBarHidden = false; 
imagePickerController.toolbarHidden = false; 
imagePickerController.delegate = self

答

我的问题是，我的相机设备设置为.front设置imagePicker.sourceType = .camera之前，显然它造成死机。所以我改变了我的代码：

imagePicker.cameraDevice = .front 
imagePicker.sourceType = .camera

这样：

imagePicker.sourceType = .camera 
imagePicker.cameraDevice = .front

和问题解决:)

答

我有此相同的例外，但是我没有使用的实例UIImagePickerController控件，而是我在一个UIWebView中显示了一个网页，该网页有一个输入w/HTML Media Access属性来启用摄像头访问。

问题是，它似乎UIWebView不能正确处理HTML媒体访问属性。我注意到这些属性的规范随着时间而改变了几次，所以尽管它看起来像是有效的html，并且在设备上的safari上工作，但它不适用于使用UIWebView呈现的页面。

坏：

<input type="file" accept="image/*" capture="camera" />

好：

<input type="file" accept="image/*;capture=camera" />

异常，立即去了，便拍照工作。这对于iOS 10或11来说似乎是新的，因为它是现有的代码，并且在过去没有爆炸。

UIImagePickerController异常：“源类型必须是UIImagePickerControllerSourceTypeCamera”

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