判断是否允许使用相机

来源：互联网发布：程序员的心理疾病编辑：程序博客网时间：2024/05/23 11:24

注意：此方法只对ios7以上的系统有用，刚才用“我查查”试了下，如果是在ios6的系统的话就直接崩溃了，况且ios6上也没有“设置--隐私--相机” 那一项

if(IOS7)    {        AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];        if (authStatus == AVAuthorizationStatusNotDetermined)        {            [AVCaptureDevice requestAccessForMediaType:AVMediaTypeVideo completionHandler:^(BOOL granted) {                if(granted){                    UIImagePickerController *pickerController = [[UIImagePickerController alloc] init];                    pickerController.delegate = self;                    pickerController.sourceType = UIImagePickerControllerSourceTypeCamera;                    pickerController.allowsEditing = NO;                    [self presentViewController:pickerController animated:YES completion:^{                    }];                }                else                {                    return;                }            }];        }        else if (authStatus == AVAuthorizationStatusDenied)        {            UIAlertView* alert = [[UIAlertView alloc] initWithTitle: nil                                                            message:@"请在iPhone的\"设置-隐私-相机\"选项中,允许xx访问你的相机。"                                                           delegate:nil                                                  cancelButtonTitle: @"确定"                                                  otherButtonTitles:nil, nil];            [alert show];        }        else if (authStatus == AVAuthorizationStatusAuthorized)        {            UIImagePickerController *pickerController = [[UIImagePickerController alloc] init];            pickerController.delegate = self;            pickerController.sourceType = UIImagePickerControllerSourceTypeCamera;            pickerController.allowsEditing = NO;            [self presentViewController:pickerController animated:YES completion:^{            }];        }        else if (authStatus == AVAuthorizationStatusRestricted)        {            UIAlertView* alert = [[UIAlertView alloc] initWithTitle: nil                                                            message:@"请在iPhone的\"设置-隐私-相机\"选项中,允许xx访问你的相机。"                                                           delegate:nil                                                  cancelButtonTitle: @"确定"                                                  otherButtonTitles:nil, nil];            [alert show];        }            }    else    {        UIImagePickerController *pickerController = [[UIImagePickerController alloc] init];        pickerController.delegate = self;        pickerController.sourceType = UIImagePickerControllerSourceTypeCamera;        pickerController.allowsEditing = NO;        [self presentViewController:pickerController animated:YES completion:^{        }];    }

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