前言
PopWindow工具类
import android.app.Activity
import android.content.Context
import android.graphics.drawable.BitmapDrawable
import android.os.Build
import android.view.Display
import android.view.Gravity
import android.view.View
import android.view.WindowManager
import android.widget.PopupWindow
object PopWindowUtil {
private var winHeight: Int = 0
private var winWidth: Int = 0
private var view: View? = null
private var popupWindow: PopupWindow? = null
private var context: Context? = null
private var canDown: Boolean = false
private var canClick: Boolean = false
private var canShow: Boolean = false
private var ERROR: Boolean = false
const val MATCH = -100F
const val CHANGE = -1000F
fun init(context: Context, layoutId: Int, width: Float, height: Float, restraint: Restraint?) {
this.context = context
if (isExist()) {
popupWindow!!.dismiss()
popupWindow = null
}
val wm = context.getSystemService(Context.WINDOW_SERVICE) as WindowManager
val display: Display = wm.defaultDisplay
winHeight = display.height
winWidth = display.width
view = View.inflate(context, layoutId, null)
val useWidth = when (width) {
MATCH -> winWidth
CHANGE -> (winWidth - dip2px(restraint!!.width))
else -> dip2px(width)
}
ERROR = height == MATCH
val useHeight = when {
height == MATCH -> winHeight
width == CHANGE -> (winHeight - dip2px(restraint!!.height))
else -> dip2px(height)
}
popupWindow = PopupWindow(view, useWidth, useHeight)
}
fun getViewById(id: Int): View? =
if (isExist()) view!!.findViewById(id)
else throw NullPointerException("查找控件失败,请初始化")
fun showPopWindow(location: View, global: Boolean, excursion: Excursion, anim: Int?) {
val disPose = disPose(location)
val x = dip2px(excursion.x.toFloat())
val y = dip2px(excursion.y.toFloat())
if (isExist()) {
if (anim != null) popupWindow?.animationStyle = anim
popupWindow?.isFocusable = canClick
if (canDown) popupWindow?.setBackgroundDrawable(BitmapDrawable())
popupWindow?.isOutsideTouchable = canDown
if (canShow) setBackgroundAlpha(0.5F)
popupWindow!!.setOnDismissListener {
if (canShow) setBackgroundAlpha(1F)
dismissListener?.invoke()
}
if (global) {
if (ERROR) popupWindow?.height = winHeight - disPose
popupWindow?.showAtLocation(location, excursion.gravity, x, y)
} else {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && ERROR) {
val height = location.layoutParams.height
popupWindow?.height = winHeight - (disPose + height)
popupWindow?.showAtLocation(location, Gravity.NO_GRAVITY, 0, disPose + height)
} else popupWindow?.showAsDropDown(location, x, y)
}
} else throw NullPointerException("显示PopWindow失败,请初始化")
}
fun disPose(location: View): Int {
val a = IntArray(2)
location.getLocationOnScreen(a)
return a[1]
}
fun disMiss(): Boolean =
if (isExist() && isShowing()) {
popupWindow!!.dismiss()
true
} else false
fun getPopWindow() =
if (isExist()) popupWindow
else throw NullPointerException("获取PopWindow对象失败,PopWindow示例对象为空")
fun setBackgroundAlpha(bgAlpha: Float) {
val activity: Activity = context as Activity
val lp = activity.window.attributes
lp.alpha = bgAlpha
if (bgAlpha == 1f) activity.window.clearFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND)
else activity.window.addFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND)
activity.window.attributes = lp
}
fun shadowShowAble(canShow: Boolean) {
this.canShow = canShow
}
fun outSideTouchable(canDown: Boolean) {
this.canDown = canDown
}
fun itemClickable(canClick: Boolean) {
this.canClick = canClick
}
fun isShowing() = popupWindow!!.isShowing
fun isExist() = popupWindow != null
fun destroy() {
dismissListener = null
popupWindow?.dismiss()
popupWindow = null
context = null
view = null
}
fun dip2px(dpValue: Float): Int =
(dpValue * this.context!!.resources.displayMetrics.density + 0.5f).toInt()
var dismissListener: (() -> Unit)? = null
}
data class Excursion(val gravity: Int, val x: Int, val y: Int)
data class Restraint(val width: Float, val height: Float)
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