按下后退按钮保持android AutoCompleteTextView建议

Question

我的recyclerview中有一个AutoCompleteTextView，我想在触摸后退按钮后保留建议。有人能帮助我吗？

谢谢，

Answer 1

使用savedInstanceState但是，取决于您需要多长时间保存数据？你以后对数据做了什么？...你知道共享偏好吗？

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    ...
    if (savedInstanceState != null) {
        //Restore the fragment's state here
    }
}
...
@Override
public void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);

//Save the fragment's state here



}