Question

我的EditText在方向更改方面遇到了一些问题。出于某种原因，他们不会恢复输入的内容。我有2节课。主要活动和活动中的片段主要活动：

public class MainActivity extends ActionBarActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(
    setContentView(R.layout.
    getFragmentManager().beginTransaction().replace(R.id.controlsBar, new AddItemFragment()).commit();
    }
}

片段：

public class AddItemFragment extends Fragment {

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    View view = inflater.inflate(R.layout.fragment_add_item, container, false);
    EditText item = (EditText) view.findViewById(R.id.itemNameAdd);
    EditText amount = (EditText) view.findViewById(R.id.itemAmount);

    if (savedInstanceState != null) {
        System.out.println(savedInstanceState.getString("item"));
        item.setText(savedInstanceState.getString("item", ""));
        amount.setText(savedInstanceState.getString("amount", ""));
    }

    //item.setText("SOME TEXT");
    //amount.setText("SOME TEXT");
    return view;
}
@Override
public void onSaveInstanceState(Bundle outState) {
    EditText item = (EditText) getActivity().findViewById(R.id.itemNameAdd);
    EditText amount = (EditText) getActivity().findViewById(R.id.itemAmount);
    outState.putString("item", item.getText().toString());
    outState.putString("amount", amount.getText().toString());
}
}

有趣的是该行＆＃34; System.out.println（savedInstanceState.getString（＆＃34; item＆＃34;））;＆＃34;在控制台中打印出正确的单词。此外，我将文本设置为＆＃34; SOME TEXT＆＃34;也有效。它只有当我将文本设置为savedInstanceState.getString（＆＃34; amount＆＃34;，＆＃34;＆＃34;）时，它才会工作

谢谢

Answer 1

尝试添加标记为＆＃34;＆lt; ---- THIS LINE＆＃34;到public void onSaveInstanceState(Bundle outState)：

@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState); // <---- THIS LINE
EditText item = (EditText) getActivity().findViewById(R.id.itemNameAdd);
EditText amount = (EditText) getActivity().findViewById(R.id.itemAmount);
outState.putString("item", item.getText().toString());
outState.putString("amount", amount.getText().toString());
}

另外，请查看使用onActivityCreated，并查看下面评论中的资源。

片段不记得EditText关于方向更改的内容

1 个答案: