如何解决Android:如何将arrayadapter.getitemi添加到ArrayList <*>?在科特林
Android Studio将Java代码转换为kotlin时遇到了在kotlin中添加对象列表时遇到的问题
javacode
private List _items = new Arraylist();// for understanding
private ArrayAdaper _arrayAdapter= (ArrayAdaper)getAdapter; // for understanding
@Override
public boolean onTouch(View v,MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_UP) {
if (null != _arrayAdapter) {
// Refresh content #6
// Change Start
// Description: The items were only set initially,not reloading the data in the
// spinner every time it is loaded with items in the adapter.
_items.clear();
for (int i = 0; i < _arrayAdapter.getCount(); i++) {
_items.add(_arrayAdapter.getItem(i));
}
// Change end.
_searchableListDialog.show(scanForActivity(_context).getFragmentManager(),"TAG");
}
}
return true;
}
科特琳码
private var _items:MutableList<*>?=null //for understanding
private var _arrayAdapter:ArrayAdapter<*>?=null //for understanding
override fun onTouch(v: View,event: MotionEvent): Boolean {
if (event.action == MotionEvent.ACTION_UP) {
if (null != _arrayAdapter) {
// Refresh content #6
// Change Start
// Description: The items were only set initially,not reloading the data in the
// spinner every time it is loaded with items in the adapter.
_items!!.clear()
for (i in 0 until _arrayAdapter!!.count) {
_items!!.add(_arrayAdapter!!.getItem(i))//Type mismatch required nothing Found Any?
}
// Change end.
_searchableListDialog!!.show(scanForActivity(_context)!!.fragmentManager,"TAG")
}
}
return true
}
我在kotlin的 _items !!。add(_arrayAdapter !!。getItem(i))中遇到问题。它在Java中工作正常,但在kotlin Type mismatch required nothing Found Any?
中给出了错误强制转换为无错误,但是在运行时单击微调框时出现错误string cannot cast to void
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