Android - 自定义 ArrayAdapter - 无法识别对 ListItems 的点击

Question

I implemented a custom ArrayAdapter which causes the problem that any click on the TextView element of the ListItem is not recognized by the ListView ; However clicking on the ImageView element of the ListItem leads to the desired effect. I just couldn't figure out how this behavior is caused even tough i followed the tutorials.

Everything works just fine when i use the standard ArrayAdapater .

I am going to include the involved classes since i don't know which of them is relevant to solve this issue.

CustomArrayAdapter:

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>

Thanks in advance!

Answer 1

the ListView setOnItemClickListener intercepts the clicks of the root view of the list item, and as you enable the TextView as clickable, then it has its own click listener that won't be intercepted by the ListView setOnItemClickListener .

Solution:

You need to make both TextView and ImageView as not clickable or focus-able

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

You can use below list item layout..

<?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>