适配iOS11及iPhoneX几个有用小tip

一、几个适配iPhoneX有用的宏／函数

1、宏

 //判断iOS11
 #define iOS11OrLater @available(iOS 11.0, *)
 
 //判断iPhoneX
 #define IS_IPHONE (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
 #define IS_IPHONE_X (IS_IPHONE && SCREEN_WIDTH == 375.0f && SCREEN_HEIGHT == 812.0f)

2、函数

//获取视图底部极限<适用于Masonry实现页面布局>
MASViewAttribute*  MD_SafeAreaInset_Masonry_Boom(UIView * view){

     if(iOS11OrLater)
     {
         return view.mas_safeAreaLayoutGuideBottom;
     }
     return view.mas_bottom;

}

//获取视图顶部极限<适用于Masonry实现页面布局>
MASViewAttribute*  MD_SafeAreaInset_Masonry_Top(UIView * view){

     if(iOS11OrLater)
    {
        return view.mas_safeAreaLayoutGuideTop;
    }
    return view.mas_top;

 }

//获取视图安全区域<适用于非Masonry实现页面布局>
UIEdgeInsets MD_SafeAreaInset(UIView * view){

    if(iOS11OrLater)
    {
        if (!UIEdgeInsetsEqualToEdgeInsets(UIEdgeInsetsZero, view.safeAreaInsets))
        {
          return  view.safeAreaInsets;
        }
    }
    
    //防止获取SafeAreaInset获取zero
    if(IS_IPHONE_X)
    {
        return UIEdgeInsetsMake(44, 0, 34, 0);
    }

    return UIEdgeInsetsZero;
}

iOS11适配

1、scrollview布局及tableview显示／抖动适配

 if (iOS11OrLater)
 {

    [UIScrollView appearance].contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
    
    [UITableView appearance].estimatedSectionFooterHeight = 0;
    [UITableView appearance].estimatedSectionHeaderHeight = 0;
    [UITableView appearance].estimatedRowHeight = 0;
}

2、webview适配（cell中包含webview若不处理，最终webview内容将被遮挡部分高度）

if(iOS11OrLater)
{
    self.scrollView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
}