Camera is not working in IOS

Question

I have implemented the following and camera is opened but app is crashed and sometime when open and take the pictures then app is crasshed and log only show "Snapshotting a view that has not been rendered results in an empty snapshot. Ensure your view has been rendered at least once before snapshotting or snapshot after screen updates Received memory warning."

The same functionality I have used for take the image from gallery and its working.

 -(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:      (NSInteger)buttonIndex{
  if (buttonIndex==0) {
    if (![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {

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

        [myAlertView show];

    }else{

        [self performSelector:@selector(loadCamera) withObject:nil afterDelay:1.0];

    }    
}
}


-(void)loadCamera{

picker1 = [[UIImagePickerController alloc] init];
picker1.delegate = self;
picker1.allowsEditing=YES;
picker1.sourceType = UIImagePickerControllerSourceTypeCamera;
[self presentViewController:picker1 animated:YES completion:NULL];
}

Can anyone help.

Please refer this : I think its helpfull [Open Camera in ios](http://stackoverflow.com/questions/4812945/opening-camera-in-iphone-app-programatically) — Muhammad Raheel Mateen, Feb 20 '16 at 12:37
I used the below but app still crash and also use its delegates - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { — Chandan Kumar Jha, Feb 25 '16 at 06:18
I call this camera function under the actionsheet action. Is that any issue ? — Chandan Kumar Jha, Feb 25 '16 at 06:20
Used this code without actionsheet the problem is still same also after adding picker1.modalPresentationStyle = UIModalPresentationCurrentContext; — Chandan Kumar Jha, Feb 25 '16 at 10:05
Now the same camera code is working but sometime when connected with Xcode it crashed with same error. — Chandan Kumar Jha, Mar 08 '16 at 11:32

Ronak Chaniyara · Answer 1 · 2016-02-20T13:20:37.467

1

Solved it by following code:

-(void)loadCamera{
    if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])  
            {
            dispatch_async(dispatch_get_main_queue(), ^{

            picker1 = [[UIImagePickerController alloc] init];
            picker1.delegate = self;
            picker1.allowsEditing=YES;
            picker1.sourceType = UIImagePickerControllerSourceTypeCamera;
            [self presentViewController:picker1 animated:YES completion: nil];

         });
       }
   }

This code worked for me with iOS 9.2 and xCode 7.2

edited Feb 20 '16 at 13:20

answered Feb 20 '16 at 12:56

Ronak Chaniyara

5,335
3
24
51

Also in ios 12.1 this was a bug reported by appstore to my application. I added dispatch_async and it started working. thanks – Alp Altunel Nov 27 '18 at 07:20

Muhammad Raheel Mateen · Answer 2 · 2016-02-20T12:56:44.560

0

- (IBAction)takeAPhoto:(VSButton *)sender {


    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 = YES;
        picker.sourceType = UIImagePickerControllerSourceTypeCamera;

        [self presentViewController:picker animated:YES completion:NULL];
    }

}

edited Feb 20 '16 at 12:56

answered Feb 20 '16 at 12:49

Muhammad Raheel Mateen

610
3
10

presentModalViewController was deprecated in iOS 6. suggested to use presentViewController@Muhammad Raheel Mateen – Ronak Chaniyara Feb 20 '16 at 12:52
I will paste the method , this is running in my project too. – Muhammad Raheel Mateen Feb 20 '16 at 12:57
Its show error and app is crashed > Snapshotting a view that has not been rendered results in an empty snapshot. Ensure your view has been rendered at least once before snapshotting or snapshot after screen updates. – Chandan Kumar Jha Feb 25 '16 at 08:19

score 0 · Answer 3 · answered Feb 20 '16 at 13:03

0

[self performSelector:@selector(loadCamera) withObject:nil afterDelay:1.0];
-(void)loadCamera

{
if ([UIIagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera)

{

picker1 = [[UIImagePickerController alloc] init];
picker1.delegate = self;
picker1.allowsEditing=YES;
picker1.sourceType = UIImagePickerControllerSourceTypeCamera;
[self presentViewController:picker1 animated:YES completion:NULL];

}

}

answered Feb 20 '16 at 13:03

Sabby

403
3
15

I used the above but app still crash and also use its delegates - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { – Chandan Kumar Jha Feb 25 '16 at 06:11

Camera is not working in IOS

3 Answers3