WIndicator

2016-3-25 修改项：

• 优化代码
• 将WIndicator方法text替换成title

模仿MBProgressHUD 结合自己的用途 用swift 编码了一套功能一样的控件, 将这三个文件添加到工程中就可以了 WIndicator.swift、WActivityIndicator.swift、WIndicatorText.swift

用法如下 用法一：

    var indicator = WIndicator.showIndicatorAddedTo(self.view, animation: true)
    dispatch_async(dispatch_get_global_queue(0,0), { () -> Void in
        sleep(3)

        dispatch_async(dispatch_get_main_queue(), { () -> Void in
            WIndicator.removeIndicatorFrom(self.view, animation: true)
        })
    })

用法二：

    var indicator = WIndicator.showIndicatorAddedTo(self.view, animation: true)
    indicator.title = "swift比用法一多了一行文字"
    dispatch_async(dispatch_get_global_queue(0,0), { () -> Void in
       sleep(3)

        dispatch_async(dispatch_get_main_queue(), { () -> Void in
          WIndicator.removeIndicatorFrom(self.view, animation: true)
        })
    })

用法 三

  var indicator = WIndicator.showMsgInView(self.view, text: "浮动窗口测试", timeOut: 1.5)