ListView里面的ToggleButton状态问题

listview的控件复用了，需要把每个ToggleButton的状态保存起来

private HashMap states=new HashMap<>();

toogle.setOnCheckedChangeListener(new OnCheckedChangeListener() {

@Override
public void onCheckedChanged(CompoundButton arg0, boolean arg1) {
// TODO Auto-generated method stub
if(arg1){

states.put(positions, arg1);

}
else {

states.put(positions, arg1);

}
}
});

if(states.get(position)==null)
    toogle.setChecked(false);
else
    toogle.setChecked(states.get(position));