java - 带有自定义 ArrayAdapter setOnItemClickListener 的 ListView 不会触发

Question

我不明白为什么 setOnItemClickListener 不起作用。我有带有自定义 ListItem 布局的 ListView，并且我想在用户单击行时启动其他 Activity 。

我看到了很多有关此问题的主题，但没有任何帮助。

屏幕:

activity_main.xml:

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ListView
        android:id="@+id/notes_list"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_above="@+id/addNote">
    </ListView>

    <TextView
        android:id="@+id/empty_list_item"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="@string/empty_notes"
        android:visibility="gone"
        android:gravity="center"
        android:layout_above="@+id/addNote"
    />

    <Button
        android:id="@+id/addNote"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/add_note"
        android:layout_alignParentBottom="true"
    />
</RelativeLayout>

list_row.xml:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal"
    android:padding="5dip" >

    <!-- Note text-->
    <TextView
        android:id="@+id/noteText"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="#040404"
        android:typeface="sans"
        android:textSize="15dip"
        android:textStyle="bold" />

    <!-- Note createdAt -->
    <TextView
        android:id="@+id/noteCreatedAt"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/noteText"
        android:textColor="#343434"
        android:textSize="10dip"
        android:layout_marginTop="1dip" />

    <!-- Note complete -->
    <Button
        android:id="@+id/btnCompleteNote"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_centerVertical="true"
        android:text="Complete" />
</RelativeLayout>

RNoteAdapter.java:

public class RNoteAdapter extends ArrayAdapter<RNote> {
    private Context context;
    private int resource;
    RNote[] data;
    private RNoteRepository noteRepository;

    public RNoteAdapter(Context context, int resource, RNote[] data) {
        super(context, resource, data);
        this.context = context;
        this.resource = resource;
        this.data = data;
        this.noteRepository = new RNoteRepository(context);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View row = convertView;
        RNoteHolder holder = null;

        if(row == null) {
            LayoutInflater inflater = ((Activity)context).getLayoutInflater();
            row = inflater.inflate(resource, parent, false);

            holder = new RNoteHolder();
            holder.noteText = (TextView)row.findViewById(R.id.noteText);
            holder.noteCreatedAt = (TextView)row.findViewById(R.id.noteCreatedAt);
            holder.btnCompleteNote = (Button)row.findViewById(R.id.btnCompleteNote);

            row.setTag(holder);
        } else {
            holder = (RNoteHolder)row.getTag();
        }

        final RNote note = data[position];

        if(note.IsCompleted) {
            holder.noteText.setPaintFlags(holder.noteText.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG);
        }
        holder.noteText.setText(note.Text);

        DateFormat df = new SimpleDateFormat("dd.MM.yyyy в HH:mm");
        holder.noteCreatedAt.setText(df.format(note.CreatedAtUtc));

        holder.btnCompleteNote.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                note.IsCompleted = true;
                noteRepository.save(note);

                RNoteAdapter.this.notifyDataSetChanged();
            }
        });

        return row;
    }

    static class RNoteHolder {
        TextView noteText;
        TextView noteCreatedAt;
        Button btnCompleteNote;
    }
}

MainActivity.java

public class MainActivity extends ActionBarActivity {
    private RNoteRepository _noteRepository = new RNoteRepository(this);

    private Button addButton;
    private ListView notesList;

    RNoteAdapter adapter;

    private void init() {
        notesList = (ListView)findViewById(R.id.notes_list);
        addButton = (Button)findViewById(R.id.addNote);

        notesList.setEmptyView(findViewById(R.id.empty_list_item));
        addButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                showEditNoteActivity(0);
            }
        });

        notesList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                showEditNoteActivity(id);
            }
        });
    }

    private void updateData() {
        List<RNote> list = _noteRepository.getAll();
        RNote[] array = list.toArray(new RNote[list.size()]);

        adapter = new RNoteAdapter(this, R.layout.list_row, array);
        notesList.setAdapter(adapter);
    }

    private void showEditNoteActivity(long noteId) {
        Intent intent = new Intent(getApplicationContext(), EditNoteActivity.class);
        intent.putExtra("noteId", noteId);
        startActivityForResult(intent, 1);
    }

    private void showDialog(String text) {
        Toast toast = Toast.makeText(getApplicationContext(), text, Toast.LENGTH_SHORT);
        toast.setGravity(Gravity.CENTER, 0, 0);
        toast.show();
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (data == null) {
            return;
        }
        String msg = data.getStringExtra("response");
        showDialog(msg);
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        init();
    }

    @Override
    protected void onResume() {
        super.onResume();
        updateData();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

Answer 1

添加

android:descendantFocusability="blocksDescendants" 

到 ListView 的行根。

ArrayAdapter 的 getItemId 实现返回位置，而不是 RNote 的 id，因此您可能需要重写它以使其返回正确信息