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使用HTML5构建iOS原生APP（5）

余果 2013-04-10 iOS

我的app基本上是由一个原生的navigation controller贯穿全局，然后在每一个scene中都有一个主要的UIWebView作为主要逻辑：

- (void)viewDidLoad{
	...
	self.webView = [[UIWebView alloc] initWithFrame:CGRectMake(.0f, 0.f, self.view.bounds.size.width, self.view.bounds.size.height -44)];//-44是减去标题栏高度
	self.webView.delegate = self;
	...
	[self.view addSubview:self.webView];
	
}

现在的问题是，当手机翻转的时候，webView的大小不会重绘，就会出现bug，解决办法很简单，就是实现翻转委托：

- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation {
    	NSLog(@"I have finished rotating");
	self.webView.frame = CGRectMake(.0f, 0.f, self.view.bounds.size.width, self.view.bounds.size.height));
}

就可以了，然后在webView中做好宽度自适应：

<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scable=0, minimun-scale=1.0, maximum-scale=1.0">

备注

介绍一下view的三种坐标属性：

Frame A view’s frame (CGRect) is the position of its rectangle in the superview’s coordinate system. By default it starts at the top left.

Bounds A view’s bounds (CGRect) expresses a view rectangle in its own coordinate system.

Center A center is a CGPoint expressed in terms of the superview’s coordinate system and it determines the position of the exact center point of the view.

余果

一个产品设计师。了解详情

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使用HTML5构建iOS原生APP（5）

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