modal的样式及 半透明控制器效果

modal出半透明的控制器：

    UIViewController * maskVC = [[UIViewController alloc] init];

    

    //设置页面的透明度

    maskVC.view.backgroundColor = [UIColor colorWithFullRed:0 green:0 blue:0 alpha:0.4];

    if （[[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0） {

        maskVC.providesPresentationContextTransitionStyle = YES;

        maskVC.definesPresentationContext = YES;

        maskVC.modalPresentationStyle = UIModalPresentationOverCurrentContext;

        [self presentViewController:maskVC animated:YES completion:nil];

    } else {

        self.view.window.rootViewController.modalPresentationStyle = UIModalPresentationCurrentContext;

        [self presentViewController:maskVC animated:NO completion:nil];

        self.view.window.rootViewController.modalPresentationStyle = UIModalPresentationFullScreen;

    }

• 什么叫呈现样式
• Modal出来的控制器，最终显示出来的样子
• Modal常见有5种呈现样式
• UIModalPresentationFullScreen ：全屏显示（默认）
• UIModalPresentationPageSheet
• 宽度：竖屏时的宽度（768）
• 高度：当前屏幕的高度（填充整个高度）
• UIModalPresentationFormSheet ：占据屏幕中间的一小块
• UIModalPresentationCurrentContext ：跟随父控制器的呈现样式
• UIModalPresentationPopover:被popover包装过的样式
•  
•  
• 什么叫过渡样式
• Modal出来的控制器，是以怎样的动画呈现出来
• Modal一共4种过渡样式
• UIModalTransitionStyleCoverVertical ：从底部往上钻（默认）
• UIModalTransitionStyleFlipHorizontal ：三维翻转
• UIModalTransitionStyleCrossDissolve ：淡入淡出
• UIModalTransitionStylePartialCurl ：翻页（只显示部分，使用前提：呈现样式必须是UIModalPresentationFullScreen）
•  

 

- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{

    

    UIViewController *vc = [[UIViewController alloc] init];

    vc.view.backgroundColor = [UIColor yellowColor];

    

    /*modal呈现样式-->iPhone中不起做用

     UIModalPresentationFullScreen = 0,

     UIModalPresentationPageSheet NS_ENUM_AVAILABLE_IOS(3_2) __TVOS_PROHIBITED,

     UIModalPresentationFormSheet NS_ENUM_AVAILABLE_IOS(3_2) __TVOS_PROHIBITED,

     UIModalPresentationCurrentContext NS_ENUM_AVAILABLE_IOS(3_2),

     UIModalPresentationCustom NS_ENUM_AVAILABLE_IOS(7_0),

     UIModalPresentationOverFullScreen NS_ENUM_AVAILABLE_IOS(8_0),

     UIModalPresentationOverCurrentContext NS_ENUM_AVAILABLE_IOS(8_0),

     UIModalPresentationPopover NS_ENUM_AVAILABLE_IOS(8_0) __TVOS_PROHIBITED,

     UIModalPresentationNone NS_ENUM_AVAILABLE_IOS(7_0) = -1,

     */

    vc.modalPresentationStyle = UIModalPresentationFormSheet;//呈现样式

    

    

    /*modal的过渡样式

     UIModalTransitionStyleCoverVertical = 0,

     UIModalTransitionStyleFlipHorizontal __TVOS_PROHIBITED,

     UIModalTransitionStyleCrossDissolve,

     UIModalTransitionStylePartialCurl

     */

    vc.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;

    [self presentViewController:vc animated:YES completion:nil];

    

}