問題描述

我們能否改變 UIScrollView 的行為，讓它以反向模式滾動 RTL 內(nèi)容.

Can we change the behavior of UIScrollView that it scrolls RTL content in it's reverse mode.

推薦答案

count = 6;

[self.scrollView setFrame:CGRectMake(scrollView.frame.origin.x, scrollView.frame.origin.y, 320, 480)];

[pageControl setNumberOfPages:count];

self.scrollView.contentSize = CGSizeMake(self.scrollView.frame.size.width * count, self.scrollView.frame.size.height);

for(int i=count-1; i>=0; i--) { //start adding content in reverse mode
    CGRect frame;
    frame.origin.x = self.scrollView.frame.size.width * (count - i - 1); //ar
    frame.origin.y = 0;
    frame.size = self.scrollView.frame.size;

    UIImageView *imageView = [[UIImageView alloc] initWithFrame:frame];
    [imageView setImage:[UIImage imageNamed:[NSString stringWithFormat:@"%i.png", i]]];

    [self.scrollView addSubview:imageView];
}

//scroll to the last frame as it's the first page for RTL languages
CGRect frame;
frame.origin.x = scrollView.frame.size.width * (count - 1);
frame.origin.y = 0;
frame.size = scrollView.frame.size;
[self.scrollView scrollRectToVisible:frame animated:NO];

頁面控件還需要將最后一個點(diǎn)指示為第一個點(diǎn)(或第一頁)

The page control also needs to be indicate the last dot as the first dot (or first page)

- (void)scrollViewDidScroll:(UIScrollView *)sender {
// Update the page when more than 50% of the previous/next page is visible
CGFloat pageWidth = self.scrollView.frame.size.width;
int page = floor((self.scrollView.contentOffset.x - pageWidth / 2) / pageWidth) + 1;
self.pageControl.currentPage = (page % count);
}

這篇關(guān)于從右到左語言的 UIScrollView 方向 RTL的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網(wǎng)！