问题描述
我对android来说非常新，我想在用户单击图像时交换微调器值。 请任何人帮助我。
这是我的代码：
public class SearchFragment extends Fragment { ImageView swap; Spinner source, destination; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.search, container, false); swap = (ImageView)getActivity().findViewById(R.id.imgSwap); source = (Spinner)getActivity().findViewById(R.id.from); destination = (Spinner)getActivity().findViewById(R.id.to); swap.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { -----> \\\\Here want to code } }); return view; } }
1楼
如果要交换两个微调框的内容，可以使用此
ArrayList<String> list1 = new ArrayList<>();
ArrayList<String> list2 = new ArrayList<>();
list1.add("A");
list1.add("B");
list1.add("C");
list2.add("1");
list2.add("2");
list2.add("3");
ArrayAdapter<String> adapter1 = new ArrayAdapter<String>(this,android.R.layout.simple_dropdown_item_1line,list1);
ArrayAdapter<String> adapter2 = new ArrayAdapter<String>(this,android.R.layout.simple_dropdown_item_1line,list2);
spinner1.setAdapter(adapter1);
spinner2.setAdapter(adapter2);
yourImageButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
ArrayAdapter<String> a1 = (ArrayAdapter) spinner1.getAdapter();
ArrayAdapter<String> a2 = (ArrayAdapter) spinner2.getAdapter();
spinner1.setAdapter(a2);
spinner2.setAdapter(a1);
}
});
或者，如果您只想在微调器之间交换选定的值，则可以在按钮单击中使用它
yourImagebutton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
int position1 = spinner1.getSelectedItemPosition();
int position2 = spinner2.getSelectedItemPosition();
String item1 = list1.get(position1);
String item2 = list2.get(position2);
list1.remove(position1);
list1.add(position1, item2);
list2.remove(position2);
list2.add(position2, item1);
adapter1.notifyDataSetChanged();
adapter2.notifyDataSetChanged();
}
});