Question

我有一个webview，我已经添加到xib处于纵向模式。我已将xib的webview框架设置为（0,54,768,905）。当我以纵向模式运行我的应用程序时，它会在适当的框架中显示webview，但是当我从纵向旋转到横向时，我的webview框架没有正确设置。

在will rotate界面方向中，我设置了webview的框架，但没有反映出任何变化。当我从纵向旋转到横向时，webview的框架从y position = 0而不是54开始。

这是我的代码：

  -(void)viewDidLoad
{  

        //Landscape
        viewstatus =@"landscape";


        if (webview)
        {
            [webview removeFromSuperview];
        }
        self.webview.frame =CGRectMake(0, self.view.origin.y+54, 1024, 680);
        [self.view addSubview:webview];
        NSURL *url = [NSURL fileURLWithPath:dataObject];
        NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
        [webview loadRequest:requestObj];
        NSString *insertRule1 = [NSString stringWithFormat:@"addCSSRule('html', 'padding: 0px; height: %fpx; -webkit-column-gap: 0px; -webkit-column-width: %fpx;')", 680.0f, 1024.0f];
        [webview stringByEvaluatingJavaScriptFromString:insertRule1];

        pagecontrol.frame =CGRectMake(300, 710, 150, 36);

    }else{

        //Portrait


        if (webview)
        {
            [webview removeFromSuperview];
        }
        self.webview.frame =CGRectMake(0, self.view.origin.y+54, 768, 905);
        [self.view addSubview:webview];
        NSURL *url = [NSURL fileURLWithPath:dataObject];
        NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
        [webview loadRequest:requestObj];


        NSString *insertRule1 = [NSString stringWithFormat:@"addCSSRule('html', 'padding: 0px; height: %fpx; -webkit-column-gap: 0px; -webkit-column-width: %fpx;')", 905.0f, 768.0f];
        [webview stringByEvaluatingJavaScriptFromString:insertRule1];
        pagecontrol.frame =CGRectMake(208, 959, 358, 36);

    }

    UITapGestureRecognizer* doubleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action: @selector(handleDoubleTap:)];
    doubleTap.numberOfTouchesRequired = 2 ;
    [self.view addGestureRecognizer:doubleTap] ;
    UIScrollView* sv = nil;
    for(UIView* v in self.webview.subviews){
        if([v isKindOfClass:[UIScrollView class] ]){
            sv = (UIScrollView*) v;
            [sv setZoomScale:9.0f animated:YES];
            //sv.scrollEnabled=YES;
            sv.bounces = NO;
        }
    }


    [pagecontrol setAutoresizingMask:UIViewAutoresizingFlexibleWidth];
    [pagecontrol addTarget:self action:@selector(changePage:) forControlEvents:UIControlEventValueChanged];
    [self.view addSubview:pagecontrol];
    webview.scrollView.delegate=self;
    webview.scrollView.showsVerticalScrollIndicator=NO;
    webview.scrollView.bounces = NO;
    webview.scrollView.pagingEnabled = YES;
    pinchdetect=NO;
    pinchRecognizer = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinchDetected:)];
    [self.webview addGestureRecognizer:pinchRecognizer];

   }    

}




- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration
{

    if(toInterfaceOrientation == 1 || toInterfaceOrientation == 2)
    {
        viewstatus =@"portrait";



        [self.view bringSubviewToFront:pagecontrol];
            if (webview)
        {
            [webview removeFromSuperview];
        }
        self.webview.frame =CGRectMake(0, self.view.origin.y+54, 768, 905);
        [self.view addSubview:webview];
        NSString *insertRule1 = [NSString stringWithFormat:@"addCSSRule('html', 'padding: 0px; height: %fpx; -webkit-column-gap: 0px; -webkit-column-width: %fpx;')", 905.0f, 768.0f];
        [webview stringByEvaluatingJavaScriptFromString:insertRule1];
           //     webview.frame =CGRectMake(0, 54, 768, 905);
        pagecontrol.frame =CGRectMake(230, 959, 600, 36);


    }
    if(toInterfaceOrientation == 3 || toInterfaceOrientation == 4)
    {
        viewstatus =@"landscape";
        if (webview)
        {
            [webview removeFromSuperview];
        }
        self.webview.frame =CGRectMake(0, self.view.origin.y+54, 1024, 680);
        [self.view addSubview:webview];
        [self.view bringSubviewToFront:pagecontrol];
        NSString *insertRule1 = [NSString stringWithFormat:@"addCSSRule('html', 'padding: 0px; height: %fpx; -webkit-column-gap: 0px; -webkit-column-width: %fpx;')", 680.0f, 1024.0f];
        [webview stringByEvaluatingJavaScriptFromString:insertRule1];

        pagecontrol.frame =CGRectMake(300, 710, 150, 36);


    }
    [webview reload];

}

Answer 1

首先使用下方法

将shouldAutorotateToInterfaceOrientation设置为YES

- (BOOL) shouldAutorotateToInterfaceOrientation: (UIInterfaceOrientation) orientation 
{
    return YES;
}

然后添加此方法

- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
{
    if(fromInterfaceOrientation == UIInterfaceOrientationPortrait){
        [webView stringByEvaluatingJavaScriptFromString:@"rotate(0)"];
    }
    else{
        [webView stringByEvaluatingJavaScriptFromString:@"rotate(1)"];
    }
}

Answer 2

如果您使用自动布局和IB，当您将webview放到视图上时，请使用固定。将顶部，前部，尾部和底部固定到视图上。无论你使用什么方向，它都会坚持下去。我这样做了几次，效果很好。

如何在iOS中设置方向更改的webview框架？

2 个答案: