如何在向下滑动UIWebView以修复iOS7状态栏覆盖问题后更改UIWebView背景颜色？ [英] How can I change the UIWebView background color after sliding down UIWebView to fix the iOS7 status bar overlay issue?

问题描述

我在写一个Phonegap 3.0+应用程序。

iOS7中的状态栏重叠显示有一个问题，用户

UIWebView背景设置为清除颜色，但不透明




下面是我尝试过的代码到目前为止：

   - （void）viewWillAppear：（BOOL）animated {
 // ios 7 
 if（[[[UIDevice currentDevice] systemVersion] floatValue]> = 7）{
 CGRect viewBounds = [self.webView bounds]; 
 viewBounds.origin.y = 20; 
 viewBounds.size.height = viewBounds.size.height  -  20; 
 self.webView.frame = viewBounds; 
 [self.webView setOpaque：YES]; 
 
 //取消注释时，这两个都不起作用：
 // [self.webView setBackgroundColor：[UIColor grayColor]]; 
 // self.webView.backgroundColor = [UIColor grayColor]; 
} 
 [super viewWillAppear：animated]; 
} 
  

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UPDATE 1

   - （void） viewWillAppear：（BOOL）animated 
 {
 // ios 7上的下屏幕20px 
 if（[[[UIDevice currentDevice] systemVersion] floatValue]> = 7）{
 CGRect viewBounds = [self.webView bounds]; 
 viewBounds.origin.y = 20; 
 viewBounds.size.height = viewBounds.size.height  -  20; 
 self.webView.frame = viewBounds; 
 
 self.webView.backgroundColor = [UIColor grayColor]; 
 self.webView.opaque = NO; 
} 
 [super viewWillAppear：animated]; 
} 
  

这似乎还给我一个白色背景的状态栏，灰色。

我希望的结果是这样的：

解决方案

所以我意识到代码推动UIWebView下降20px。意思是根据定义的空格不能是UIWebView。白色空间是主视图，我通过执行以下操作来更改背景颜色：

1。转到MainViewController.xib：



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2。选择主视图：




3。显示属性检查器并更改颜色。已完成。



显然现在我想想，但希望这有助于未来的人。

I'm writing a Phonegap 3.0+ app.

There is an issue with the status bar overlapping views in iOS7 which user Ludwig Kristoffersson provided a working answer here

Now that I have UIWebView with a 20px top margin, how can I change the UIWebView background color? I need the area behind the status bar to be the same background color as the "people" toolbar.

I have almost no experience in Objective C, and have been looking through possible SO questions to find a working solution but with no success.

UIWebView background color
UIWebView background is set to Clear Color, but it is not transparent


Below is the code that I've tried so far:

- (void)viewWillAppear:(BOOL)animated {
    //Lower screen 20px on ios 7
    if([[[UIDevice currentDevice] systemVersion] floatValue] >= 7) {
        CGRect viewBounds = [self.webView bounds];
        viewBounds.origin.y = 20;
        viewBounds.size.height = viewBounds.size.height - 20;
        self.webView.frame = viewBounds;
        [self.webView setOpaque:YES];

        //neither of these seem to work when uncommented:
  //    [self.webView setBackgroundColor:[UIColor grayColor]];
  //    self.webView.backgroundColor=[UIColor grayColor];
        }
    [super viewWillAppear:animated];
    }

---

UPDATE 1

- (void)viewWillAppear:(BOOL)animated
{
//Lower screen 20px on ios 7
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7) {
    CGRect viewBounds = [self.webView bounds];
    viewBounds.origin.y = 20;
    viewBounds.size.height = viewBounds.size.height - 20;
    self.webView.frame = viewBounds;

    self.webView.backgroundColor = [UIColor grayColor];
    self.webView.opaque=NO;
}
[super viewWillAppear:animated];
}

That still seems to give me a white background behind the status bar, rather than gray.

The result I'm hoping for is like this:

解决方案

So I realized that the code pushes the UIWebView down 20px. Meaning that the white space by definition cannot be UIWebView. The white space is the main view which I changed the background color by doing the following:

1. Go to MainViewController.xib:



2. Select the main view:


3. Show the attributes inspector and change the color. Done.

Obvious now that I think about it, but hopefully this helps someone in future.

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