我有一些微調項目(字符串)。 我想將所選項目添加到列表中。我在網上閱讀,我應該使用onItemSelectedListener
而不是onItemClickListener
。Android Kotlin onItemSelectedListener適用於微調不工作
我實現了這個,但我不知道如何完成將它添加到列表中的步驟。
class NewKitListActivity : AppCompatActivity() {
var spinnerArray = arrayOf("Dumbell", "Punching Bag", "Yoga Ball", "Skipping Rope")
//var spinnerArray = arrayOf(DataService.kitList)
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_new_kit_list)
val spinner = newKitItemSpinner
val spinnerArrayAdapter = ArrayAdapter<String>(this, android.R.layout.simple_spinner_dropdown_item, spinnerArray)
//selected item will look like a spinner set from XML
spinnerArrayAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item)
spinner.adapter = spinnerArrayAdapter
spinner.onItemSelectedListener = object : OnItemSelectedListener {
override fun onItemSelected(parent: AdapterView<*>, view: View, position: Int, id: Long) {
val selectedItem = parent.getItemAtPosition(position).toString()
if (selectedItem == "Add new category") {
// do your stuff
}
} // to close the onItemSelected
override fun onNothingSelected(parent: AdapterView<*>) {
}
}}}
感謝
創建一個新的MutableList和你的項目添加到這個列表。 – just
@just,你能寫一個我如何將它傳遞給可變列表的例子嗎?我會很感激! – DukeAmber27