CODEWITHSUNDEEP
iphonecocoa-touchios4uiimagepickercontroller
skålfyfan
skålfyfan

Reputation: 5281

UIImagePickerControllerSourceTypeCamera crashes in IPHONE Simulator?

Is it a known issue that if you try to test your UIImagePickerController using the Camera as a source type then the simulator will crash?

I have the following code:

self.imgPicker = [[UIImagePickerController alloc] init];
self.imgPicker.allowsEditing = NO;
self.imgPicker.delegate = self;
[self.imgPicker setSourceType:UIImagePickerControllerSourceTypeCamera];
[self presentModalViewController:self.imgPicker animated:YES];
[imgPicker release];

Running this in simulator, I get an objc-exception-throw error on the stack @ -[UIImagePickerController setSourceType:].

Now if I set the source type to the Photo Library though, everything runs smoothly and fine? What's the deal?

Upvotes: 1

Views: 5015

Answers (1)

Luca Bernardi
Luca Bernardi

Reputation: 4199

Simulator doesn't have the camera and can't simulate to take a picture (it would have been nice to use the isight but Apple has not been so kindly). However Your code is not safe because, for example, old ipod touch doesn't have a camera and in this case your app will crash on this device.

As Apple suggest in UIImagePickerController documentation:

To use an image picker controller containing its default controls, perform these steps:

1.Verify that the device is capable of picking content from the desired source. Do this calling the isSourceTypeAvailable: class method, providing a constant from the “UIImagePickerControllerSourceType” enum.

2.Check which media types are available, for the source type you’re using, by calling the availableMediaTypesForSourceType: class method. This lets you distinguish between a camera that can be used for video recording and one that can be used only for still images.

3.Tell the image picker controller to adjust the UI according to the media types you want to make available—still images, movies, or both—by setting the mediaTypes property.

4.Present the user interface by calling the presentModalViewController:animated: method of the currently active view controller, passing your configured image picker controller as the new view controller.

5.When the user taps a button to pick a newly-captured or saved image or movie, or cancels the operation, dismiss the image picker using your delegate object. For newly-captured media, your delegate can then save it to the Camera Roll on the device. For previously-saved media, your delegate can then use the image data according to the purpose of your app.

So you have to call isSourceTypeAvailable and set your sourceType consistently.

Upvotes: 10

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