ios - 相机在 IOS 中不工作

Question

我已经实现了以下操作，相机已打开，但应用程序崩溃了，有时当打开并拍照时，应用程序崩溃了，日志仅显示“快照尚未渲染的 View 会导致空快照。确保您的 View 在屏幕更新之前至少渲染过一次快照或快照后收到内存警告。”

我用于从图库中获取图像及其工作的相同功能。

 -(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];
}   

谁能帮忙。

Answer 1

通过以下代码解决:

-(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];

         });
       }
   }

此代码适用于 iOS 9.2 和 xCode 7.2