Question

我正在尝试使用复选框在android中实现自定义列表视图。用户可以创建一组在复选框中签入的联系人我需要帮助实现ViewHolder类，其次我如何为每个列表项分配联系人

ContactList单行XML

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:background="@android:color/transparent">

    <TextView
        android:id="@+id/textViewContactName"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/textViewContactNameResource"
        android:textSize="20sp"/>

    <TextView
        android:id="@+id/textViewContactNumber"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/textViewContactNumberResource"
        android:textSize="15sp"
        android:layout_below="@+id/textViewContactName"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />

    <CheckBox
        android:id="@+id/checkBoxContactSelection"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:checked="false"
        android:layout_below="@+id/textViewContactName"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true" />

</RelativeLayout>

[！[在此处输入图像说明] [1]] [1]

InviteAndAddPeople.Java

public class InviteAndAddPeople extends ListActivity {

    ListView listViewContacts;
    Cursor cursor;
    private static final int read_Contacts_Permission_Request = 1;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_invite_and_add_people);
        this.setTitle("Invite Friends");
        View view = getLayoutInflater().inflate(R.layout.invite_add_header,null);

        cursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,null,null,null,null);
        startManagingCursor(cursor);
        String[] from = {ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME, ContactsContract.CommonDataKinds.Phone.NUMBER};

        //int[] to = {R.id.textViewContactName, R.id.textViewContactNumber};

        ListAdapter listadapter = new CustomContactsAdapter(this,cursor ,from);
        //SimpleCursorAdapter listadapter = new SimpleCursorAdapter(this,R.layout.contacts_list_view,cursor,from,to);



        setListAdapter(listadapter);

        listViewContacts = getListView();
        listViewContacts.addHeaderView(view);
        //listViewContacts.setChoiceMode(AbsListView.CHOICE_MODE_MULTIPLE_MODAL);
        //listViewContacts.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE_MODAL);

    }

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

    @Override
    public int getSelectedItemPosition() {
        return super.getSelectedItemPosition();
    }

    @Override
    public long getSelectedItemId() {
        return super.getSelectedItemId();
    }
}

CustomContactsAdapter.Java

public class CustomContactsAdapter extends ArrayAdapter<String> {

    Context context;
    String [] from;
    Cursor cursor;
    public CustomContactsAdapter(Context context,Cursor cursor ,String[] from) {
        super(context, R.layout.contacts_list_view,from);
        this.context = context;
        this.from = from;
        this.cursor = cursor;
    }
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        return super.getView(position, convertView, parent);
    }
}

Answer 1

问题是你没有处于generic_add的状态，这就是为什么你没有得到你想要的选中值。

使用自定义CheckBox或List的{{1}}或ArrayList来存储数据。
使用class实例化并设置要查看的值。
将HashMap标记设置为ViewHolder内的ViewHolder并从View获取标记。
检查getView()的特定索引的值，并相应地检查View。

使用如下的适配器：

List

}

Android自定义联系人ListView带复选框

1 个答案: