Question

我有第一个视图控制器 imageResults ，并使用下面的代码调用MWPhotoBrowser。我看到它使用来自self.photos的数据显示一个新的视图控制器。我尝试过添加更多数据但没有成功的几个选项。我希望能够在新视图中加载更多数据并将其添加到photobrowser，添加更多数据部分已经不在了，现在我如何设置当前浏览器加载新数组而不会丢失当前位置？

    -(void)mvTouched:(NSIndexPath *)indexPath {
    NSLog(@"Arr:%lu  Url:%lu", [titlesMutable count], [mediaUrlDict count]);

    NSMutableArray *tmpPhotos = [NSMutableArray array];
    for(NSString *titleString in titlesMutable) {
        NSString *url = [mediaUrlDict objectForKey:titleString];
        MWPhoto *currentPhoto = [MWPhoto photoWithURL:[NSURL URLWithString:url]];
        currentPhoto.caption=[NSString stringWithFormat:@"%@", titleString];
        [tmpPhotos addObject:currentPhoto];
        //[tmpPhotos addObject:[MWPhoto photoWithURL:[NSURL URLWithString:url]]];

    }
    self.photos = [NSArray arrayWithArray:tmpPhotos];


    MWPhotoBrowser *browser = [[MWPhotoBrowser alloc] initWithDelegate:self];

    // Set options
    browser.displayActionButton = YES; // Show action button to allow sharing, copying, etc (defaults to YES)
    browser.displayNavArrows = YES; // Whether to display left and right nav arrows on toolbar (defaults to NO)
    browser.displaySelectionButtons = NO; // Whether selection buttons are shown on each image (defaults to NO)
    browser.zoomPhotosToFill = YES; // Images that almost fill the screen will be initially zoomed to fill (defaults to YES)
    browser.alwaysShowControls = YES; // Allows to control whether the bars and controls are always visible or whether they fade away to show the photo full (defaults to NO)
    browser.enableGrid = YES; // Whether to allow the viewing of all the photo thumbnails on a grid (defaults to YES)
    browser.startOnGrid = NO; // Whether to start on the grid of thumbnails instead of the first photo (defaults to NO)
    browser.edgesForExtendedLayout = YES;
    browser.extendedLayoutIncludesOpaqueBars = YES;

    // Optionally set the current visible photo before displaying
    //[browser setCurrentPhotoIndex:1];
    [browser setCurrentPhotoIndex:indexPath.row];

    self.navigationController.navigationBar.hidden=NO;
    // Present
    [self.navigationController pushViewController:browser animated:YES];

    // Manipulate
    [browser showNextPhotoAnimated:YES];
    [browser showPreviousPhotoAnimated:YES];
    //[browser setCurrentPhotoIndex:1];
    [browser setCurrentPhotoIndex:indexPath.row];


    [browser reloadData];
}
-(void)loadMore {
    [self addDataToArray];
    //[self mvTouched:nil];



    [self.collectionView reloadData];

}
- (NSUInteger)numberOfPhotosInPhotoBrowser:(MWPhotoBrowser *)photoBrowser {
    return _photos.count;
}

- (id <MWPhoto>)photoBrowser:(MWPhotoBrowser *)photoBrowser photoAtIndex:(NSUInteger)index {
    if (index < _photos.count)
        return [_photos objectAtIndex:index];
    return nil;
}
- (void)photoBrowser:(MWPhotoBrowser *)photoBrowser actionButtonPressedForPhotoAtIndex:(NSUInteger)index {
    // Do your thing!

    NSLog(@"ACTION!!!");
}

Answer 1

调用[self.collectionView reloadData]只会重新加载当前视图的集合而不是MWPhotoBrowser。您需要调用浏览器reloadData函数，以便这样工作：

[browser reloadData]

请注意，调用此方法后，浏览器集合视图目前无法显示新照片。我设法通过将此代码添加到MWPhotoBrowser.m文件中的reloadData方法来解决此问题：

if (_gridController) {
    [_gridController.collectionView reloadData];
}

将照片添加到MWPhotoBrowser

1 个答案: