Android FrameLayout ListView元素看似不可点击

时间:2016-12-13 22:12:26

标签: java android listview

我有一个应用程序将项目加载到FrameLayout内的ListView中。该部分工作正常但click功能似乎不起作用,当我将鼠标悬停在他们没有可点击的悬停外观的项目上时,点击时什么都不做。

我已经用Google搜索过,并且在xml中提到了一些焦点和可点击的类型,但尝试添加它们似乎没有任何区别。

我使用的布局结构有问题吗?或者我可以添加一些东西以确保ListView元素是可点击的吗?

LansFragment

Map<String,String> myMap = new HashMap<>();
JSONArray lanArray = data; //json arrray, blank for example

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

    View view = inflater.inflate(R.layout.activity_main, container, false);

    ArrayList<String> itemArray = new ArrayList<String>();

    try {
        JSONArray jsonMainArr = jsonObj.getJSONArray(lanArray);

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

            JSONObject json_data = jsonMainArr.getJSONObject(i);

            String name = json_data.getString("lanName");
            String key = json_data.getString("lanKey");

            itemArray.add(name);
            myMap.put(name, key);
        }
    } catch (Exception e) {
        // catch here
    }

    ArrayAdapter adapter = new ArrayAdapter<String>(view.getContext(), R.layout.activity_listview, itemArray);

    ListView listView = (ListView) getActivity().findViewById(R.id.listview);
    listView.setAdapter(adapter);

    listView.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> l, View v, int position, long id) {

            String lan = l.getItemAtPosition(position).toString();
            String key = myMap.get(lan);

            // Not currently working due to no click registering
        }
    });

    return view;
}

activity_main

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="app.stats.LansFragment"
    android:orientation="horizontal">

    <FrameLayout
        android:id="@+id/fragment_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <ListView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:id="@+id/listview" />
    </FrameLayout>

</LinearLayout>

activity_listview

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/label"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:padding="10dip"
    android:textSize="16dip"
    android:textStyle="bold" >
</TextView>

1 个答案:

答案 0 :(得分:2)

您致电片段内的ListView ID来调用:

ListView listView = (ListView) getActivity().findViewById(R.id.listview);

但是在片段中你应该引用片段视图。它应该是:

ListView listView = (ListView) view.findViewById(R.id.listview);