Question

我有一个Fragment类和相应的适配器类。 My Fragment类看起来像这样 -

@Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        myAdapter = new MyAdapter(getActivity(), favourites);
        msgListView.setAdapter(myAdapter );
        return view;
    }

在MyAdapter中，

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder1 viewHolder;
        MyClass favouriteMessage =  favouriteMessageList.get(position);

        if (convertView == null) {
            convertView = inflater.inflate(R.layout.favorites_fragment_list, null);
            viewHolder = new ViewHolder1();
            viewHolder.favouriteMessagesList = (TextView)convertView.findViewById(R.id.favourites_list);
            convertView.setTag(viewHolder);
        }else{
            viewHolder = (ViewHolder1) convertView.getTag();
        }
        //Update Your Views Here
        viewHolder.favouriteMessagesList.setText(favouriteMessage.getText());

        return convertView;
    }

    public void setFavouritesData(ArrayList<FavouriteMessageWrapper> data) {
        favouriteMessageList = data;
        notifyDataSetChanged();
    }

我想在点击监听器上实现列表视图项。我在哪里实现它？如果我尝试在我的片段的onCreateView中执行它，它就是null。

Answer 1

试试这个，

在fragment中设置itemClickListener并按照这样做，

>>> a="D:/R_SVN/hostworkspace/middleware/projects/module/com.ofss.fc.module.ac/src/com/ofss/fc/app\ac\service\writeoffrecovery\ext\WriteoffRecoveryApplicationServiceExtExecutor.java"
>>> b=a.replace('\\','/')
>>> print b
D:/R_SVN/hostworkspace/middleware/projects/module/com.ofss.fc.module.ac/src/com/ofss/fc/appc/service/writeoffrecovery/ext/WriteoffRecoveryApplicationServiceExtExecutor.java

Answer 2

不要在创建时设置adpter。在onpost方法中获取data.like http方法集适配器之后的setadapter。

Answer 3

让你的片段实现OnItemSelectedListener并在

之后 msgListView.setAdapter(myAdapter );

中的

onCreateView()

msgListView.setOnItemSelectedListener(this)。

Answer 4

在onCreateView()中进行所有初始化：

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragementName, container, false);//put fragment name of your 
    msgListView=(ListView)view.findViewById(R.id.listView);
    return view;
}

在您的片段中实施OnItemClickListener 在onActivityCreated()安装适配器和itemClickListener中：

@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    myAdapter = new MyAdapter(getActivity(), favourites);
    msgListView.setAdapter(myAdapter );
    msgListView.setOnItemClickListener(this);
}

Answer 5

您可以在适配器中实现onClickListener

public View getView(int position, View convertView, ViewGroup parent) {

     viewHolder.favouriteMessagesList.setOnClickListener(new OnClickListener() {  
        public void onClick(View v)
            {
                //perform action
            }
         });

    return convertView;
}

希望它能解决你的问题

Android列表视图项单击适配器

5 个答案: