Android学习之BottomSheetDialog组件的使用

implementation 'com.google.android.material:material:1.4.0'

         var text = TextView(this@UIBottomSheetAC)
         text.text = "BottomSheetDialog"
         var linearLayout = LinearLayout(this@UIBottomSheetAC)
         linearLayout.addView(text)
         linearLayout.setBackgroundColor(Color.YELLOW)
         linearLayout.layoutParams = LinearLayout.LayoutParams(-1,500)
         val bottomSheetDialog =
             BottomSheetDialog(context, R.style.bottom_sheet_dialog)
         bottomSheetDialog.setContentView(linearLayout)
         bottomSheetDialog.show()

<style name="bottom_sheet_dialog" parent="Theme.Design.Light.BottomSheetDialog">
    <item name="bottomSheetStyle">@style/bottom_sheet_style_wrapper</item>
</style>
<style name="bottom_sheet_style_wrapper" parent="Widget.Design.BottomSheet.Modal">
    <item name="android:background">@android:color/transparent</item>
</style>

<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <solid android:color="@android:color/holo_blue_light" />
    <corners
        android:topLeftRadius="15dp"
        android:topRightRadius="15dp" />
</shape>

// 视图背景增加圆角样式
linearLayout.background = getDrawable(R.drawable.ui_shape_top_radius15)
// bottomSheetDialog设置透明背景样式
val bottomSheetDialog =
    BottomSheetDialog(context, R.style.bottom_sheet_dialog)

<style name="bottom_sheet_dialog" parent="Theme.Design.Light.BottomSheetDialog">
    <item name="bottomSheetStyle">@style/bottom_sheet_style_wrapper</item>
    <item name="android:backgroundDimEnabled">false</item>
</style>

bottomSheetDialog.setCancelable(false)
bottomSheetDialog.setCanceledOnTouchOutside(true)

Button(this).run {
    it.addView(this)
    text = "BottomSheetListDialog"
    setOnClickListener {
        var listView = ListView(this@UIBottomSheetAC)
        listView.adapter =
            ArrayAdapter<String>(
                this@UIBottomSheetAC,
                android.R.layout.simple_list_item_1,
                values
            )
        var coordinatorLayout = CoordinatorLayout(this@UIBottomSheetAC)
        val params = ViewGroup.LayoutParams(
            resources.displayMetrics.widthPixels,
            resources.displayMetrics.heightPixels
        )
        coordinatorLayout.addView(listView)
        val bottomSheetDialog =
            BottomSheetDialog(context, R.style.bottom_sheet_dialog)
        bottomSheetDialog.setContentView(coordinatorLayout,params)
        bottomSheetDialog.show()
    }
}

 val bottomSheetBehavior = BottomSheetBehavior.from(coordinatorLayout)
        bottomSheetBehavior.peekHeight = resources.displayMetrics.heightPixels * 3 / 4
        bottomSheetBehavior.addBottomSheetCallback(object :
            BottomSheetBehavior.BottomSheetCallback() {
            override fun onSlide(bottomSheet: View, slideOffset: Float) {

            }

            override fun onStateChanged(bottomSheet: View, newState: Int) {
                if (newState == BottomSheetBehavior.STATE_HIDDEN) {
                    bottomSheetDialog.dismiss()
                }
            }
        })