记录TZImagePickerController浏览图片状态栏导航栏显示问题

本文介绍: TZIm a g ePic k e rCon t roll e r与FDFullscreenPopGes ture 导致预览图片是导航栏问题

记录TZImagePic kerCon t roller浏览图片 状态栏 显示 问题

解决使用 TZImagePickerController 查看浏览图片时，遇到状态栏消失情况、
主要是项目中用到了 FDFullscreenPopGesture的问题，它hook了所有控制器的viewWillDi sap pe ar 判断了如果fd _p refersNav igationBarHid den是NO就显示导航栏

会影响所有未设置 fd _p refer sNav igationBarHid den为YES但需要 隐藏 导航栏的控制器

目前项目中受影响的就是使用 第三方 查看 图片时出现状态栏 消失 问题

导航栏异常时效果

如果大家不想改动库内部代码，可以参考下面的做法用KVO避免这个问题：

在 TZImagePi ckerController 初始化的地方加上这段代码

        TZImagePickerController *imagePickerVc = [[TZImagePickerController alloc] initWithMaxImagesCount:1 delegate:self];
        imagePickerVc.sortAscendingByModificationDate = NO;
        imagePickerVc.allowPickingVideo = NO;
        imagePickerVc.allowPickingOriginalPhoto = NO;
        [imagePickerVc.navigationBar setBackgroundImage:[UIImage createImageWithColor:LAUIMainColor] forBarMetrics:UIBarMetricsDefault];
        imagePickerVc.modalPresentationStyle = UIModalPresentationFullScreen;
        imagePickerVc.title = @"相册";
        [self presentViewController:imagePickerVc animated:YES completion:nil];
        // 监听TZImagePickerController导航栏的显示与否
        [imagePickerVc addObserver:self forKeyPath:@"navigationBar.hidden" options:NSKeyValueObservingOptionNew context:nil];

- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary<NSKeyValueChangeKey,id> *)change context:(void *)context {
    if ([keyPath isEqualToString:@"navigationBar.hidden"] &amp;&amp; [object isKindOfClass:[TZImagePickerController class]]) {
        TZImagePickerController *tzImagePicker = (TZImagePickerController *)object;
        // 当前在预览页面，且导航栏显示着(被FD等第三方库打开了)，再隐藏下导航栏
        if ([tzImagePicker.topViewController isKindOfClass:[TZPhotoPreviewController class]] &amp;&amp; [change[NSKeyValueChangeNewKey] intValue] == 0) {
            dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
                [tzImagePicker setNavigationBarHidden:YES];
            });
        }
    }
}