Android自定义PopWindow

释放双眼,带上耳机,听听看~!

我实现的效果是点击按钮 一个从底部出现popwindow的动画 窗体颜色变灰 显示recyclerview列表,以及实现类传入适配器数据和点击事件 以及点击外部隐藏popwindow

上代码:

class PlayListPopWindow(context: Context, adapter: PopWindowAdapter,listener:BaseQuickAdapter.OnItemClickListener,val window: Window):PopupWindow() {
var alpha:Float = 0f
init {
//记录当前透明度
alpha =  window.attributes.alpha
//设置布局
val  view =    LayoutInflater.from(context).inflate(R.layout.pop_playlist,null,false)
//获取recyclerview
val recyclerview = view.findViewById<RecyclerView>(R.id.pop_recy)
//适配
recyclerview.layoutManager = LinearLayoutManager(context)
recyclerview.adapter= adapter
adapter.setOnItemClickListener(listener)
contentView = view
//设置宽高
width = ViewGroup.LayoutParams.MATCH_PARENT
//设置高度为屏幕的3/5
val manager =context.getSystemService(Context.WINDOW_SERVICE) as WindowManager
val point = Point()
manager.defaultDisplay.getSize(point)
val windowheight = point.y
height = (windowheight*3)/5
//设置获取焦点
isFocusable = true
//点击外部空白区域
isOutsideTouchable = true
//能够响应返回按钮    低版本点击返回按钮能dismiss
setBackgroundDrawable(ColorDrawable())
//处理popwindow动画
animationStyle = R.style.pop
}
override fun showAsDropDown(anchor: View?, xoff: Int, yoff: Int, gravity: Int) {
super.showAsDropDown(anchor, xoff, yoff, gravity)
//当前popwindow已经显示了
val attarbutes = window.attributes
attarbutes.alpha = 0.3f
//设置到应用程序窗体上面
window.attributes = attarbutes
}
override fun dismiss() {
super.dismiss()
//隐藏
val attarbutes = window.attributes
attarbutes.alpha = alpha
window.attributes  = attarbutes
}
}

实现类


//点击事件
override fun onItemClick(adapter: BaseQuickAdapter<*, *>?, view: View?, position: Int) {
//播放当前歌曲
Iservice?.playPosition(position)
}
//初始化数据
list?.let {
val adapter = PopWindowAdapter(it)
//获取底部高度
val bottomH = woshibottom.height
val popWindow = PlayListPopWindow(this,adapter,this,window)
popWindow.showAsDropDown(woshibottom,0,bottomH)
}

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