UIScrollview 高度变化基于 Uiwebview 内容
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【中文标题】UIScrollview 高度变化基于 Uiwebview 内容【英文标题】：UIScrollview height change base on Uiwebview Contents 【发布时间】：2014-03-09 08:21:04 【问题描述】：我试图根据我的UIWebView 内容设置UIScrollView 的高度。
我在故事板中使用自动布局，目标是 ios7。
我知道如何通过此代码将大小硬编码为 UIScrollView 的高度：
-(void) viewDidLayoutSubviews
UIScrollView *sv = (UIScrollView *)[self.view viewWithTag:30];
sv.contentSize = CGSizeMake(0,1200);
以及如何根据内容设置UIWebView 高度：
- (void)webViewDidStartLoad:(UIWebView *)bweb
CGRect frame = byweb.frame;
frame.size.height = 5.0f;
bweb.frame = frame;
-(void) viewDidAppear:(BOOL)animated
[super viewDidAppear:animated];
- (void)webViewDidFinishLoad:(UIWebView *)bweb
CGSize mWebViewTextSize = [bweb sizeThatFits:CGSizeMake(1.0f, 1.0f)];
CGRect mWebViewFrame = bweb.frame;
mWebViewFrame.size.height = mWebViewTextSize.height;
self.cellhieghtforwebview = &(mWebViewFrame.size.height);
bweb.frame = mWebViewFrame;
bweb.scrollView.scrollEnabled = NO;
bweb.scrollView.bounces = NO;
UIScrollView *sv = (UIScrollView *)[self.view viewWithTag:30];
sv.contentSize = CGSizeMake(0, *(self.cellhieghtforwebview));
[self viewDidLayoutSubviews];
但是设置UIWebView的高度后不知道怎么设置scrollview的高度
这是总代码：
@interface NBViewController () <UIWebViewDelegate,UIScrollViewDelegate>
@property (nonatomic, strong) NSMutableDictionary *imageDownloadsInProgress;
@end
@implementation NBViewController
- (void)viewDidLoad
[super viewDidLoad];
self.imageDownloadsInProgress = [NSMutableDictionary dictionary];
CGFloat xOffset = 0;
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
xOffset = 224;
pullRightView = [[PullableView alloc] initWithFrame:CGRectMake(0, 200, 200, 300)];
pullRightView.backgroundColor = [UIColor lightGrayColor];
pullRightView.openedCenter = CGPointMake(100, 200);
pullRightView.closedCenter = CGPointMake(-70, 200);
pullRightView.center = pullRightView.closedCenter;
pullRightView.animate = NO;
pullRightView.handleView.backgroundColor = [UIColor darkGrayColor];
pullRightView.handleView.frame = CGRectMake(170, 0, 30, 300);
[self.view addSubview:pullRightView];
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 160, 30)];
label.backgroundColor = [UIColor darkGrayColor];
label.textColor = [UIColor whiteColor];
label.text = @"User name";
label.transform = CGAffineTransformMakeRotation(-M_PI_2);
label.center = CGPointMake(185, 80);
[pullRightView addSubview:label];
NSString *s = self.Bodys;
s = [@"<html dir=\"rtl\">" stringByAppendingString:s];
s = [s stringByAppendingString:@"</html>"];
UIWebView *bweb = (UIWebView *)[self.view viewWithTag:3];
UIImageView *uimg = (UIImageView *)[self.view viewWithTag:20];
UILabel *title = (UILabel *)[self.view viewWithTag:2];
uimg.image = self.NBimage;
[title setText:self.Titles];
bweb.delegate = self;
[bweb loadHTMLString:s baseURL:nil];
bweb.scrollView.scrollEnabled = NO;
bweb.scrollView.bounces = NO;
-(void) viewDidLayoutSubviews
UIScrollView *sv = (UIScrollView *)[self.view viewWithTag:30];
if((self.cellhieghtforwebview != nil))
NSLog(@"not null enter %d" , (int)*(self.cellhieghtforwebview));
if((int)*(self.cellhieghtforwebview) > 0)
NSLog(@"above zero enter %d" , (int)*(self.cellhieghtforwebview));
sv.contentSize = CGSizeMake(0,(int)*(self.cellhieghtforwebview));
else
NSLog(@"aaaa %d" , 1200);
sv.contentSize = CGSizeMake(0,1200);
- (void)didReceiveMemoryWarning
[super didReceiveMemoryWarning];
NSArray *allDownloads = [self.imageDownloadsInProgress allValues];
[allDownloads makeObjectsPerformSelector:@selector(cancelDownload)];
[self.imageDownloadsInProgress removeAllObjects];
- (void)webViewDidStartLoad:(UIWebView *)bweb
CGRect frame = bweb.frame;
frame.size.height = 5.0f;
bweb.frame = frame;
-(void) viewDidAppear:(BOOL)animated
[super viewDidAppear:animated];
- (void)webViewDidFinishLoad:(UIWebView *)bweb
NSLog(@"finish loading");
CGSize mWebViewTextSize = [bweb sizeThatFits:CGSizeMake(1.0f, 1.0f)];
CGRect mWebViewFrame = bweb.frame;
mWebViewFrame.size.height = mWebViewTextSize.height;
self.cellhieghtforwebview = &(mWebViewFrame.size.height);
bweb.frame = mWebViewFrame;
NSLog(@"%f",*self.cellhieghtforwebview);
bweb.scrollView.scrollEnabled = NO;
bweb.scrollView.bounces = NO;
UIScrollView *sv = (UIScrollView *)[self.view viewWithTag:30];
sv.contentSize = CGSizeMake(0, *(self.cellhieghtforwebview));
[self viewDidLayoutSubviews];
-(void)bweb:(UIWebView *)bweb didFailLoadWithError:(NSError *)error
NSLog(@"error loading");
@end
故事板截图：
【问题讨论】：
您在 UIScrollView 上有其他视图还是在 UIScrollView 上只有 UIWebView？ 是的，我还有另外两个视图（uiimageview，标签）。它们都在 uiscrollview 里面。 您是在 webview 下方还是上方添加图像视图和标签？您能否制作一张图片并附上，以便我了解您的视图应该是什么样子？ 确定我添加了故事板的屏幕截图 【参考方案1】：如果您使用自动布局，则 UIScrollview 高度的调整大小将无效。从 IB 关闭自动布局，然后尝试设置 UIScrollView 的高度。
取消选中该选项，然后尝试调整滚动视图的大小。希望这可以帮助。 :)
编辑： 请参阅this 问题，这可能会有所帮助。
【讨论】：
感谢回答问题是我想使用自动布局功能。这就是我使用“viewDidLayoutSubviews”的原因。以上是关于UIScrollview 高度变化基于 Uiwebview 内容的主要内容，如果未能解决你的问题，请参考以下文章
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