如何使用片段活动将文本发送到listview

时间:2017-10-07 15:46:05

标签: java android android-layout listview android-fragments

我使用带有两个选项卡的viewpager创建了片段活动,并使用两个textview创建了listview。我想将标签1中的两个文本作为标题和说明发送到标签2。我已经成功发送了描述,但是我没有发送标题(]我只能将一个文本发送到listview。

我的fragment_one.java:

public void onViewCreated(final View view, @Nullable Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);
    viewPager = (ViewPager)view.findViewById(R.id.viewPager);
    Button btnPassData = (Button) view.findViewById(R.id.btnPassData);

    final ListView list=(ListView)view.findViewById(R.id.list_view);
    final EditText inData = (EditText) view.findViewById(R.id.inMessage);
    btnPassData.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            SM.sendData(inData.getText().toString().trim());
        }
    });

}

interface SendMessage {
    void sendData(String message);
}

@Override
public void onAttach(Context context) {
    super.onAttach(context);

    try {
        SM = (SendMessage) getActivity();
    } catch (ClassCastException e) {
        throw new ClassCastException("Error in retrieving data. Please try again");
    }
}
}

my fragment_two.java:

public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    View rootView = inflater.inflate(
            R.layout.fragment_two, container, false);
    return rootView;


}

@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);

    listView = (ListView) view.findViewById(R.id.list_view);
    adapter = new ArrayAdapter<String>(getActivity(), R.layout.single_item,R.id.tvdesc, arrayList);

    listView.setAdapter(adapter);
}

protected void displayReceivedData(String message) {
    arrayList.add(0,message);
    adapter.notifyDataSetChanged();

}
}

1 个答案:

答案 0 :(得分:0)

您应该使用fragment_one中的回调数据到主要活动,并将数据从活动发送到fragment_two(和刷新视图)

回调片段到您可以使用的活动How to make a callback between Activity and Fragment?

和Fragment_two你可以在Activity中设置这个值, EX, private Fragment mFragmentTwo; ......... mFragmentTwo = new Fragment();

并可以通过功能设置值:mFragmentTwo.displayReceivedData(yourString)