Android - 自定义 ArrayAdapter - 无法识别点击 ListItems

问题描述

我实现了一个自定义 ArrayAdapter，这会导致 ListView 无法识别对 ListItem 的 TextView 元素的任何点击；但是，单击 ListItem 的 ImageView 元素会导致预期的效果。我只是无法弄清楚这种行为是如何引起的，即使我遵循教程也很困难。

当我使用标准 ArrayAdapater 时，一切正常。

我将包括所涉及的类，因为我不知道其中哪些类与解决此问题相关。

自定义数组适配器：

public class ClassCustomArrayAdapter extends ArrayAdapter {

    private ArrayList<ArrayList<String>> contactsArray;
    private Context context;

    public ClassCustomArrayAdapter(Context context,int textViewResourceId,ArrayList<ArrayList<String>> contactsArray) {

        super(context,textViewResourceId,contactsArray);

        this.contactsArray = contactsArray;
        this.context = context;
    }

    private class ViewHolder{
        ImageView imageView;
        TextView textView;
    }

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

        ViewHolder viewHolder = null;

        LayoutInflater layoutInflater = (LayoutInflater) context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);

        if(convertView == null) {
            convertView = layoutInflater.inflate(R.layout.fragment_custom_listview_item,null);
            viewHolder = new ViewHolder();
            viewHolder.textView = (TextView) convertView.findViewById(R.id.tv);
            viewHolder.imageView = (ImageView) convertView.findViewById(R.id.iv);
            convertView.setTag(viewHolder);
        } else {
            viewHolder = (ViewHolder) convertView.getTag();
        }

        viewHolder.textView.setText(String.format("%s %s",contactsArray.get(position).get(2),contactsArray.get(position).get(1)));
        viewHolder.imageView.setimageResource(R.drawable.ic_baseline_person_24);

        return convertView;
    }

}

FragmentListContacts：

public class FragmentListContacts extends Fragment {

    private ArrayList<ArrayList<String>> contacts_arraylist;
    private ArrayList<ArrayList<String>> contacts_array_listview;
    private ArrayAdapter<String> contact_ids;
    private ArrayAdapter<ArrayList<String>> contacts_arrayadapter;
    private ListView contacts_listview;
    private FloatingActionButton add_contact_fab;
    private Database db;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }

    @Override
    public View onCreateView(LayoutInflater inflater,ViewGroup container,Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_list_contacts,container,false);
    }

    @Override
    public void onViewCreated(@NonNull View view,@Nullable Bundle savedInstanceState) {
        super.onViewCreated(view,savedInstanceState);
        contacts_listview = getActivity().findViewById(R.id.contacts_listview);
        add_contact_fab = getActivity().findViewById(R.id.add_contact_fab);
        initAddContactFAB();
        db = new Database(getContext());
        //db.insertNewContact("A","B","123","321");
        //db.insertNewContact("C","D","456","654");
        contacts_arraylist = new ArrayList<>();
        contacts_arraylist.addAll(db.getContacts());

        //contacts_arrayadapter = new ArrayAdapter<ArrayList<String>>(getContext(),android.R.layout.simple_list_item_1,android.R.id.text1,contacts_arraylist);

        ClassCustomArrayAdapter classCustomArrayAdapter = new ClassCustomArrayAdapter(getContext(),R.layout.fragment_custom_listview_item,contacts_arraylist);
        //contacts_listview.setAdapter(contacts_arrayadapter);
        contacts_listview.setAdapter(classCustomArrayAdapter);
        
        contacts_listview.setonItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent,View view,int position,long id) {
                Intent intent = new Intent(getContext(),ActivityListNotesByContact.class);
                startActivity(intent);
            }
        });

        registerForContextMenu(contacts_listview);
    }

    ...
}

custom_listview_item：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal"
    >

    <ImageView
        android:id="@+id/iv"
        android:layout_width="wrap_content"
        android:layout_height="fill_parent"
        android:gravity="center_vertical"
        android:layout_alignParentTop="true"
        android:layout_alignParentBottom="true"
        android:layout_marginRight="15dp"
        android:layout_marginTop="5dp"
        android:layout_marginBottom="5dp"
        android:longClickable="true"
        android:clickable="true"/>

    <TextView
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:id="@+id/tv"
        android:gravity="center_vertical"
        android:padding="5px"
        android:layout_marginLeft="5dp"
        android:layout_alignParentTop="true"
        android:layout_alignParentBottom="true"
        android:textSize="60px"
        android:textColor="#000000"
        android:background="#FFFFFF"
        android:longClickable="true"
        android:clickable="true"/>

</LinearLayout>

提前致谢！

解决方法

ListView setOnItemClickListener 拦截列表项根视图的点击，当您启用 TextView 为可点击时，它有自己的点击侦听器，不会被 ListView setOnItemClickListener 拦截。

解决方案：

您需要将 TextView 和 ImageView 设为不可点击或不可聚焦

android:clickable="false"
android:focusable="false"

您可以使用下面的列表项布局..

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal">

    <ImageView
        android:id="@+id/iv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="5dp"
        android:layout_marginRight="15dp"
        android:layout_marginBottom="5dp"
        android:gravity="center_vertical"
        android:clickable="false"
        android:focusable="false"/>

    <TextView
        android:id="@+id/tv"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:clickable="false"
        android:focusable="false"
        android:layout_marginLeft="5dp"
        android:background="#FFFFFF"
        android:gravity="center_vertical"
        android:textColor="#000000" />

</LinearLayout>