UIImagePickerController,Check camera - iphone

Question

-(void)viewDidLoad
{
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
{
imagePicker = [[UIImagePickerController alloc] init];
imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
imagePicker.showsCameraControls = NO;
[self.view addSubview:imagePicker.view];
}
else
{
// UIAlertView…
}
}
-(void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
imagePicker.delegate = self;
[self presentViewController:imagePicker animated:NO completion:NO];
}
I want to put out an alert when you do not have a camera.
IPhone app launch and move in this code.
But, Crash (This Error >
return UIApplicationMain(argc, argv, nil, NSStringFromClass([CameraAppDelegate class])); > Thread 1: signal SIGABRT) when run in a simulator.
Why is this?

Answer 1

use this code and add UIImagePickerControllerDelegate delegate in .h file
if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
{
UIImagePickerController* picker = [[UIImagePickerController alloc] init];
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
picker.delegate = self;
picker.wantsFullScreenLayout = YES;
[self presentModalViewController:picker animated:YES];
}
else
{
UIAlertView *altnot=[[UIAlertView alloc]initWithTitle:#"Camera Not Available" message:#"Camera Not Available" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil, nil];
altnot.tag=103;
[altnot show];
[altnot release];
}

Answer 2

Create NSObject Class and name it like ClsGlobal, or the name you want..
then write +(BOOL)isCameraDeviceAvailable in your ClsGlobal.h and implement below function in ClsGlobal.m.
+(BOOL)isCameraDeviceAvailable
{
BOOL isCameraAvailable=NO;
if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
{
if([UIImagePickerController isCameraDeviceAvailable:UIImagePickerControllerCameraDeviceFront] || [UIImagePickerController isCameraDeviceAvailable:UIImagePickerControllerCameraDeviceRear])
isCameraAvailable = YES;
}
return isCameraAvailable;
}
Use this class method, It will return YES if camera available else return NO.
Now you can call this method using [ClsGlobal isCameraDeviceAvailable]; means your if Condition looks like if([ClsGlobal isCameraDeviceAvailable]).
This method will help you throughout your project in any controller, You have to just import ClsGlobal like #import "ClsGlobal.h".