苹果的控制器在iOS7中无法正常显示

在我的iOS应用程序中,我提供了标准的控制器MFMessageComposeViewController和UIImagePickerController。

但他们都展示了一个奇怪的导航栏。

我该如何解决这个问题?

更新 控制器演示代码

UIImagePicker控制器:

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

MFMessageComposeView控制器:

MFMessageComposeViewController *messageViewController = [[MFMessageComposeViewController alloc] init];
    if([MFMessageComposeViewController canSendText]) {
        messageViewController.view.backgroundColor = [UIColor whiteColor];
        messageViewController.messageComposeDelegate = self;
        recipient= [NSStringMask maskString:recipient withPattern:@"\\+(\\d{1}) \\((\\d{3})\\) (\\d{3})-(\\d{2})-(\\d{2})"];
        messageViewController.recipients = @[recipient];
        messageViewController.body = body;
        [self presentViewController:messageViewController animated:YES completion:nil];
    }