package cn.flightfeather.thirdapp.view
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import android.content.Context
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import android.graphics.PixelFormat
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import android.os.IBinder
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import android.view.KeyEvent
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import android.view.View
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import android.view.WindowManager
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import android.widget.PopupWindow
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import org.jetbrains.anko.windowManager
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/**
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* @author riku
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* Date: 2020/8/28
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*/
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class PopupWindowWithMask(private val context: Context) : PopupWindow(context) {
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private var windowManager: WindowManager? = null
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private var maskView: View? = null
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init {
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windowManager = context.getSystemService(Context.WINDOW_SERVICE) as WindowManager
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}
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override fun showAtLocation(parent: View?, gravity: Int, x: Int, y: Int) {
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addMask(parent?.windowToken)
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super.showAtLocation(parent, gravity, x, y)
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}
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override fun dismiss() {
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removeMask()
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super.dismiss()
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}
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private fun addMask(token: IBinder?) {
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val wl: WindowManager.LayoutParams = WindowManager.LayoutParams()
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wl.width = WindowManager.LayoutParams.MATCH_PARENT
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wl.height = WindowManager.LayoutParams.MATCH_PARENT
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wl.format = PixelFormat.TRANSLUCENT //不设置这个弹出框的透明遮罩显示为黑色
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wl.type = WindowManager.LayoutParams.TYPE_APPLICATION_PANEL //该Type描述的是形成的窗口的层级关系
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wl.token = token //获取当前Activity中的View中的token,来依附Activity
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maskView = View(context)
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maskView?.setBackgroundColor(0x7f000000)
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maskView?.fitsSystemWindows = false
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maskView?.setOnKeyListener(View.OnKeyListener { v, keyCode, event ->
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if (keyCode == KeyEvent.KEYCODE_BACK) {
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removeMask()
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return@OnKeyListener true
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}
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false
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})
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/**
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* 通过WindowManager的addView方法创建View，产生出来的View根据WindowManager.LayoutParams属性不同，效果也就不同了。
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* 比如创建系统顶级窗口，实现悬浮窗口效果！
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*/
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windowManager?.addView(maskView, wl)
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}
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private fun removeMask() {
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if (null != maskView) {
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windowManager?.removeViewImmediate(maskView)
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maskView = null
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}
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}
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}
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