Android example source code file (AutoComplete4.java)

This example Android source code file (AutoComplete4.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" ^TM.

Java - Android tags/keywords

activity, android, autocomplete4, autocompletetextview, contactlistadapter, content, contentresolver, context, cursor, cursoradapter, glob, override, people_projection, provider, string, stringbuilder, textview, ui, view, widget

The AutoComplete4.java Android example source code

/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.android.apis.view;

import com.example.android.apis.R;

import android.app.Activity;
import android.content.ContentResolver;
import android.content.Context;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.Contacts;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AutoCompleteTextView;
import android.widget.CursorAdapter;
import android.widget.Filterable;
import android.widget.TextView;

public class AutoComplete4 extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.autocomplete_4);

        ContentResolver content = getContentResolver();
        Cursor cursor = content.query(Contacts.People.CONTENT_URI,
                PEOPLE_PROJECTION, null, null, Contacts.People.DEFAULT_SORT_ORDER);
        ContactListAdapter adapter = new ContactListAdapter(this, cursor);

        AutoCompleteTextView textView = (AutoCompleteTextView)
                findViewById(R.id.edit);
        textView.setAdapter(adapter);
    }

    // XXX compiler bug in javac 1.5.0_07-164, we need to implement Filterable
    // to make compilation work
    public static class ContactListAdapter extends CursorAdapter implements Filterable {
        public ContactListAdapter(Context context, Cursor c) {
            super(context, c);
            mContent = context.getContentResolver();
        }

        @Override
        public View newView(Context context, Cursor cursor, ViewGroup parent) {
            final LayoutInflater inflater = LayoutInflater.from(context);
            final TextView view = (TextView) inflater.inflate(
                    android.R.layout.simple_dropdown_item_1line, parent, false);
            view.setText(cursor.getString(5));
            return view;
        }

        @Override
        public void bindView(View view, Context context, Cursor cursor) {
            ((TextView) view).setText(cursor.getString(5));
        }

        @Override
        public String convertToString(Cursor cursor) {
            return cursor.getString(5);
        }

        @Override
        public Cursor runQueryOnBackgroundThread(CharSequence constraint) {
            if (getFilterQueryProvider() != null) {
                return getFilterQueryProvider().runQuery(constraint);
            }

            StringBuilder buffer = null;
            String[] args = null;
            if (constraint != null) {
                buffer = new StringBuilder();
                buffer.append("UPPER(");
                buffer.append(Contacts.ContactMethods.NAME);
                buffer.append(") GLOB ?");
                args = new String[] { constraint.toString().toUpperCase() + "*" };
            }

            return mContent.query(Contacts.People.CONTENT_URI, PEOPLE_PROJECTION,
                    buffer == null ? null : buffer.toString(), args,
                    Contacts.People.DEFAULT_SORT_ORDER);
        }

        private ContentResolver mContent;        
    }

    private static final String[] PEOPLE_PROJECTION = new String[] {
        Contacts.People._ID,
        Contacts.People.PRIMARY_PHONE_ID,
        Contacts.People.TYPE,
        Contacts.People.NUMBER,
        Contacts.People.LABEL,
        Contacts.People.NAME,
    };
}