我有一个带有一些元素(字符串)的微调器。
我想将所选项目添加到列表中。我在网上看到我应该使用 onItemSelectedListener 而不是 onItemClickListener。
我实现了这个，但我不知道如何完成将其添加到列表中的步骤。
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<*>) {
}
}}}
谢谢
最佳答案
(在 Kotlin 中)使用此代码:
yourSpinner?.onItemSelectedListener = object : AdapterView.OnItemSelectedListener{
override fun onNothingSelected(parent: AdapterView<*>?) {
}
override fun onItemSelected(parent: AdapterView<*>?, view: View?, position: Int, id: Long) {
}
}
关于用于微调器的 Android Kotlin onItemSelectedListener 不起作用，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/46447296/