IOS -> Cordova 将 view 下移 避免 和 状态栏重叠

- (void)viewWillAppear:(BOOL)animated {
    self.view.backgroundColor = [UIColor redColor]; //设置 背景颜色
    // View defaults to full size.  If you want to customize the view's size, or its subviews (e.g. webView),
    // you can do so here.
    // 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;
    }
    [super viewWillAppear:animated];
}

From:  http://stackoverflow.com/questions/19209781/ios-7-status-bar-with-phonegap