重新創建片段時，芯片組偵聽器更改芯片位置

Question

我正在以編程方式創建芯片。 芯片被創建，但是當應用停止（未銷毀）並重新打開時，芯片的位置在芯片組偵聽器中發生變化。

這是我的代碼：

private lateinit var playlist: Array<Pair<String, String>>

override fun onActivityCreated(savedInstanceState: Bundle?) {
super.onActivityCreated(savedInstanceState)
for (item in playlist){
    createChip(item.first)
}}

override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
chip_group.setOnCheckedChangeListener { chipGroup, position ->
    for (i in 0 until chipGroup.childCount){
        val chip = chipGroup.getChildAt(i)
        chip.isClickable = chip.id != chipGroup.checkedChipId
    }
    Toast.makeText(context, position.toString(), Toast.LENGTH_SHORT).show()
}}

fun createChip(name: String){
    val chip = Chip(chip_group.context)
    chip.text = name
    chip.isClickable = true
    chip.isCheckable = true
    chip.isCheckedIconVisible = false
    chip_group.addView(chip)
}

我希望重新打開應用程序時，芯片的位置相同，但位置會增加。

Answer 1

您正在將id與position混合。
onCheckedChanged(ChipGroup group, int checkedId)是已檢查的芯片已更改時調用的接口方法。

override fun onActivityCreated(savedInstanceState: Bundle?) {
super.onActivityCreated(savedInstanceState)
var index=0
for (item in playlist){
    createChip(item.first,index++)
}}

override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
chip_group.setOnCheckedChangeListener { chipGroup, id ->
    for (i in 0 until chipGroup.childCount){
        val chip = chipGroup.getChildAt(i)
        chip.isClickable = chip.id != chipGroup.checkedChipId
    }
    Toast.makeText(context, position.toString(), Toast.LENGTH_SHORT).show()
}}

fun createChip(name: String,index:Int){
    val chip = Chip(chip_group.context)
    chip.text = name
    chip.isClickable = true
    chip.isCheckable = true
    chip.isCheckedIconVisible = false
    chip.id=index //maybe you can use tag
    chip_group.addView(chip)
}