ListView.CHOICE_MODE_MULTIPLE

   

package app.test;

import android.app.ListActivity;
import android.content.ContentUris;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.util.Log;
import android.view.View;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;

public class Test extends ListActivity
{
    private static final String TAG = "ListViewActivity4";
    private static final Uri CONTACTS_URI = ContactsContract.Contacts.CONTENT_URI;
  private SimpleCursorAdapter adapter = null;
    private ListView lv = null;

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

        lv = getListView();

    String[] projection = new String[]{ContactsContract.Contacts._ID,
        ContactsContract.Contacts.DISPLAY_NAME};
        Cursor c = managedQuery(CONTACTS_URI,
                        projection, null, null, ContactsContract.Contacts.DISPLAY_NAME);

        String[] cols = new String[]{ContactsContract.Contacts.DISPLAY_NAME};
        int[]   views = new int[]   {android.R.id.text1};

        adapter = new SimpleCursorAdapter(this,
            android.R.layout.simple_list_item_multiple_choice,
            c, cols, views);

        this.setListAdapter(adapter);

        lv.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
    }
    
    public void doClick(View view) {
      if(!adapter.hasStableIds()) {
        Log.v(TAG, "Data is not stable");
        return;
      }
        long[] viewItems = lv.getCheckedItemIds();
        for(int i=0; i<viewItems.length; i++) {
        Uri selectedPerson = ContentUris.withAppendedId(
            CONTACTS_URI, viewItems[i]);

        Log.v(TAG, selectedPerson.toString() + " is checked.");
        }
    }
}



//main.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- This file is at /res/layout/list.xml -->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"  android:layout_height="fill_parent">

    <ListView android:id="@android:id/list"
        android:layout_width="fill_parent"  android:layout_height="0dip"
        android:layout_weight="1" />

    <Button android:id="@+id/btn" android:onClick="doClick"
     android:layout_width="wrap_content"  android:layout_height="wrap_content"
     android:text="Submit Selection" />

</LinearLayout>

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ListView.CHOICE_MODE_MULTIPLE : ListView « UI « Android

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