plist文件中權(quán)限已配置，Privacy - Camera Usage Description，iOS 12以下沒問(wèn)題，但是在iOS 12 beta 的時(shí)候就閃退

//判斷是否已授權(quán)
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7.0) {
    AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
    if (authStatus == AVAuthorizationStatusDenied||authStatus == AVAuthorizationStatusRestricted) {
        [FNSystemSet gotoSetCamera:self];
        return ;
    }
}

//獲取相機(jī)權(quán)限
[AVCaptureDevice requestAccessForMediaType:AVMediaTypeVideo completionHandler:^(BOOL granted) {
    NSLog(@"%@",granted ? @"相機(jī)準(zhǔn)許":@"相機(jī)不準(zhǔn)許");
}];

// 判斷是否可以打開相機(jī)
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
    
    [self presentViewController: [self selectPicture:UIImagePickerControllerSourceTypeCamera]
                       animated:YES
                     completion:^{
                     }];
} else {
    FNLog(@"沒有相機(jī)");
}

最終解決：是在plist文件中加入麥克風(fēng)權(quán)限就OK了