CODEWITHSUNDEEP
iosobjective-c
fAiSaL
fAiSaL

Reputation: 774

While running on ios simulator, App crashes when source of imagePicker is Camera?

My app crashes on the simulator but works fine on the device, when I give the source type of imagePicker as Camera. I have already added the permission for camera and photoLibrary in 'plist'.

Crash log:

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Source type 1 not available'

Code:

-(void)showImgPickerWithSourceType:(UIImagePickerControllerSourceType)sourceType
{
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = NO;
picker.sourceType = sourceType;
picker.allowsEditing = YES;
[(UINavigationController *)[[self.window.subviews objectAtIndex:0] nextResponder] presentViewController:picker animated:YES completion:nil];
}

Does the crash occur since I am trying to access the camera on a simulator? what will be the issue here. What I have missed?

Upvotes: 5

Views: 6428

Answers (6)

Ronak Chaniyara
Ronak Chaniyara

Reputation: 5435

You can use isSourceTypeAvailable method of UIImagePickerController to check if given source type is available or not.

+ (BOOL)isSourceTypeAvailable:(UIImagePickerControllerSourceType)sourceType

Returns YES if the device supports the specified source type; NO if the specified source type is not available.

Because a media source may not be present or may be unavailable, devices may not always support all source types. For example, if you attempt to pick an image from the user’s library and the library is empty, this method returns NO. Similarly, if the camera is already in use, this method returns NO.

Before attempting to use an UIImagePickerController object to pick an image, you must call this method to ensure that the desired source type is available.

You can add check for source type available or not using below lines of code:

if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {

    UIImagePickerController *picker = [[UIImagePickerController alloc] init];
    picker.delegate = self;
    picker.sourceType = sourceType;
    picker.allowsEditing = YES;
    [(UINavigationController *)[[self.window.subviews objectAtIndex:0] nextResponder] presentViewController:picker animated:YES completion:nil];     

}
else{

    //it is simulator or device with no camera source

    // handle accordingly

}

Reference: https://developer.apple.com/reference/uikit/uiimagepickercontroller/1619144-issourcetypeavailable?language=objc

Upvotes: 2

Sureshkumar Linganathan
Sureshkumar Linganathan

Reputation: 780

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Source type 1 not available'- This is the reason for app crash means in a simulator we cannot access a camera.Only access the camera in a device so use the following code for avoiding a crash.

-(void)showImgPickerWithSourceType:    (UIImagePickerControllerSourceType)sourceType
{
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
if ([UIImagePickerController isSourceTypeAvailable: UIImagePickerControllerSourceTypeCamera])
{
picker.sourceType = sourceType;
}
picker.allowsEditing = YES;
[(UINavigationController *)[[self.window.subviews objectAtIndex:0] nextResponder] presentViewController:picker animated:YES completion:nil];

Upvotes: 1

Forte Zhu
Forte Zhu

Reputation: 762

You are opening camera on simulator and obviously simulator don't have camera... Proceed giving an alert like this,

if (![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {

UIAlertView *myAlertView = [[UIAlertView alloc] initWithTitle:@"Error"
                                                      message:@"Device has no camera"
                                                     delegate:nil
                                            cancelButtonTitle:@"OK"
                                            otherButtonTitles: nil];

[myAlertView show];

}
else{
    UIImagePickerController *picker = [[UIImagePickerController alloc] init];
    picker.delegate = self;
    picker.allowsEditing = NO;
    picker.sourceType = sourceType;
    picker.allowsEditing = YES;
    [(UINavigationController *)[[self.window.subviews objectAtIndex:0] nextResponder] presentViewController:picker animated:YES completion:nil];
}

Hope this may help and have a practice of adding this code always to avoid crashes in Camera faulty devices...

Upvotes: 1

Himanshu Moradiya
Himanshu Moradiya

Reputation: 4815

If you are working in swift then use this code.

if(UIImagePickerController.isSourceTypeAvailable(.camera))
{
         let myPickerController = UIImagePickerController()
         myPickerController.delegate = self
         myPickerController.allowsEditing = true
         myPickerController.sourceType = .camera
         self.present(myPickerController, animated: true, completion: nil)
}
else
{
         let actionController: UIAlertController = UIAlertController(title: "Camera is not available",message: "", preferredStyle: .alert)
         let cancelAction: UIAlertAction = UIAlertAction(title: "OK", style: .cancel) { action -> Void  in
                    //Just dismiss the action sheet
         }
         actionController.addAction(cancelAction)
         self.present(actionController, animated: true, completion: nil)
}

Upvotes: 4

Nidhi Patel
Nidhi Patel

Reputation: 1292

if ([UIImagePickerController isSourceTypeAvailable: UIImagePickerControllerSourceTypeCamera])
{
               UIImagePickerController *imagePickerController=[[UIImagePickerController alloc] init];
               imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera;
               imagePickerController.allowsEditing = YES;
               imagePickerController.delegate = self;
              [self presentViewController:imagePickerController animated:YES completion:^{}];
 }
else
{
    //Camera not available
}

Upvotes: 1

rv7284
rv7284

Reputation: 1102

on the simulator, you can not access the camera so you need to check if the camera is available or not

if ([UIImagePickerController isSourceTypeAvailable: UIImagePickerControllerSourceTypeCamera]) {
// do your stuff
} else {
//camera not available
}

Upvotes: 3

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