iPhone 上点击一个button,弹出一个popup view有什么简单实现方式。 - V2EX
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parkman
V2EX    iDev

iPhone 上点击一个button,弹出一个popup view有什么简单实现方式。

  •  
  •   parkman Nov 22, 2013 5843 views
    This topic created in 4542 days ago, the information mentioned may be changed or developed.
    例如这样的效果:



    13 replies    1970-01-01 08:00:00 +08:00
    darcy
        1
    darcy  
       Nov 22, 2013
    搜一下今年的wwdc samplecode,里面有个TicTacToeApp的demo
    parkman
        2
    parkman  
    OP
       Nov 22, 2013
    @darcy 哪一个功能跟它很像
    darcy
        3
    darcy  
       Nov 22, 2013
    @parkman 你不是要popup view么?!
    Veelian
        4
    Veelian  
       Nov 22, 2013
    fahchen
        5
    fahchen  
       Nov 22, 2013 via iPad
    是要iPad上的formsheet modal那种?
    parkman
        6
    parkman  
    OP
       Nov 22, 2013
    @darcy 后面背景变得模糊了
    darcy
        7
    darcy  
       Nov 22, 2013 via iPhone
    @parkman 你自己加一层蒙板就能达到模糊的效果了
    parkman
        8
    parkman  
    OP
       Nov 23, 2013
    @darcy 你指的蒙板: 设置parent controller 的view的blur属性
    @fahchen 类似 。。。
    krafttuc
        9
    krafttuc  
       Nov 23, 2013   1
    楼主指的是这个repo吗? https://github.com/rnystrom/RNGridMenu

    整个控件实际上是一个新的view controller,view里面有blur view,有一个黑色半透明圆角背景view,然后就是多个menu item view。

    1. blur是对原先界面做快照(screenshot)后用 `CoreGraphics` 渲染出来的。
    2. 弹出的原理很简单,就是把这个view controller变成原始view controller的child view controller,把自己的view整体添加到原先的view controller的view里。为了fancy一点,再加个动画。
    parkman
        10
    parkman  
    OP
       Nov 23, 2013
    @krafttuc child view controller 的view 应该是跟它的parent view controller是一样的大小吧 。
    krafttuc
        11
    krafttuc  
       Nov 23, 2013
    @parkman 是的。源码里 `- (void)showInViewController:center:` 这个方法里有设置view的frame。稍微花点时间看看代码吧,除了blur和动画要点CG和CA的基础,其他都好懂。
    parkman
        12
    parkman  
    OP
       Nov 23, 2013
    @krafttuc 谢谢。我再 读一读
    androidBrant
        13
    androidBrant  
       Nov 26, 2013
    我会用UIWindow做这个popup view,像自定义UIAlertView一样。。。
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