android - 当我单击 fragment B 的发送按钮时如何将 arrayList 传递给 fragment C

Question

当我点击放置在 fragment 中的 Send 按钮时，我想将 fragment B 的完整 listView 传递到 fragment C B.

为此我应该做些什么

这是我的B类代码:

public class B extends Fragment {

Button send;
String[] list = { "A", "B", "C", "D", "E", "F", "G",
        "H", "I ", "J ", "K", "L", "M", "N", "O",
        "P" };

ArrayList<String> mList;
ListView LV;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    View V = inflater.inflate(R.layout.b, container, false);

    LV = (ListView) V.findViewById(R.id.listView);
    send = (Button) V.findViewById(R.id.send);

    mList = new ArrayList<String>();

    for (int i = 0; i < list.length; i++) {

        mList.add(list[i]);
    }

    ArrayAdapter<String> aa = new ArrayAdapter<String>(getActivity()
            .getBaseContext(), android.R.layout.simple_list_item_1, mList);

    LV.setAdapter(aa);

    return V;
}

}

和类 C::

public class C extends Fragment {

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {

    View rootView = inflater.inflate(R.layout.c, container, false);



    return rootView;
}

}

Answer 1

您使用 bundle 在 fragment 之间传递数据。在您的情况下，只需创建一个具有 arraylist 实例变量的类，并确保该类实现可序列化。使用 bundle.putSerializable() 传递模型或序列化对象例如

in fragment B:
Bundle bundle = new Bundle();
bundle.putInt("key","value");
and do fragment.setArguments(bundle)before the fragment transaction

in Fragment C
Bundle bundle=getArguments();
int num=bundle.getInt("key")