ListFragment

最新推荐文章于 2025-08-17 18:01:03 发布

新火燎塬

最新推荐文章于 2025-08-17 18:01:03 发布

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分类专栏： Android 文章标签： android fragmentList

本文链接：https://blog.youkuaiyun.com/qq_23077365/article/details/51711973

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本文介绍如何在Android应用中使用ListFragment实现单选列表，并展示如何设置列表项选中时背景变色。通过示例代码，读者可以学习到如何初始化ListView为单选模式、设置默认选中项及通过点击事件切换Fragment。

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ListFragment

getFragmentManager()

小技术:如何让选择项变色
android:background="?android:attr/activatedBackgroundIndicator"

设置ListView为单选模式

getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE)

设置默认选中第一个

getListView().setItemChecked(0, true)

public class TitleList extends ListFragment{
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return super.onCreateView(inflater, container, savedInstanceState);
    }


    @Override
    public void onViewCreated(View view, Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE);
        setListAdapter(new ArrayAdapter<String>(getActivity(),R.layout.item_list_title,new String[]{"title1","title2","title3","title4","title5"}));
        getListView().setItemChecked(0, true);
    }

  
@Override
public void onListItemClick(ListView l, View v, int position, long id) {
    super.onListItemClick(l, v, position, id);
    showP(arr[position]);
}

private void showP(String value) {
    MyFragment myFragment = new MyFragment();
    Bundle args = new Bundle();
    args.putString("content", value);
    myFragment.setArguments(args);
    getFragmentManager().beginTransaction().replace(R.id.ll_content, myFragment,null).commit();
}

}

public class MyFragment extends Fragment {
    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        Bundle arg = getArguments();
        TextView textView = new TextView(getActivity());
        if(arg!=null){
            String content = arg.getString("content");
            textView.setText(content);
        }
        return textView;
    }
}