Android example source code file (AutoCompleteTextViewSimple.java)

This example Android source code file (AutoCompleteTextViewSimple.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, app, arrayadapter, autocompletetextview, autocompletetextviewsimple, log_tag, onitemclicklistener, onitemselectedlistener, os, override, string, ui, util, view

The AutoCompleteTextViewSimple.java Android example source code

/*
 * Copyright (C) 2008 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 android.widget;

import com.android.frameworks.coretests.R;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemSelectedListener;

public class AutoCompleteTextViewSimple extends Activity 
        implements OnItemClickListener, OnItemSelectedListener {

    private final String LOG_TAG = "AutoCompleteTextViewSimple";
    
    private AutoCompleteTextView mTextView;
    
    /** These are cleared by resetItemListeners(), and set by the callback listeners */
    public boolean mItemClickCalled;
    public int mItemClickPosition;
    public boolean mItemSelectedCalled;
    public int mItemSelectedPosition;
    public boolean mNothingSelectedCalled;

    @Override
    protected void onCreate(Bundle icicle)
    {
        // Be sure to call the super class.
        super.onCreate(icicle);

        // setup layout & views
        setContentView(R.layout.autocompletetextview_simple);
        mTextView = (AutoCompleteTextView) findViewById(R.id.autocompletetextview1);
        
        // configure callbacks used for monitoring
        mTextView.setOnItemClickListener(this);
        mTextView.setOnItemSelectedListener(this);
        resetItemListeners();
        
        setStringAdapter(5, "a");
    }

    /**
     * @return The AutoCompleteTextView used in this test activity.
     */
    public AutoCompleteTextView getTextView() {
        return mTextView;
    }

    /**
     * Set the autocomplete data to an adapter containing 0..n strings with a consistent prefix.
     */
    public void setStringAdapter(int numSuggestions, String prefix) {
        // generate the string array
        String[] strings = new String[numSuggestions];
        for (int i = 0; i < numSuggestions; ++i) {
            strings[i] = prefix + String.valueOf(i);
        }
        
        // install it with an adapter
        ArrayAdapter<String> adapter = new ArrayAdapter(this,
                android.R.layout.simple_dropdown_item_1line, strings);
        mTextView.setAdapter(adapter);
    }
    
    /**
     * For monitoring OnItemClickListener & OnItemSelectedListener
     * 
     * An alternative here would be to provide a set of pass-through callbacks
     */
    public void resetItemListeners() {
        mItemClickCalled = false;
        mItemClickPosition = -1;
        mItemSelectedCalled = false;
        mItemSelectedPosition = -1;
        mNothingSelectedCalled = false;
    }
    
    /**
     * Implements OnItemClickListener
     */
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        Log.d(LOG_TAG, "onItemClick() position " + position);
        mItemClickCalled = true;
        mItemClickPosition = position;
    }

    /** 
     * Implements OnItemSelectedListener
     */
    public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
        Log.d(LOG_TAG, "onItemSelected() position " + position);
        mItemSelectedCalled = true;
        mItemSelectedPosition = position;
    }

    /** 
     * Implements OnItemSelectedListener
     */
    public void onNothingSelected(AdapterView<?> parent) {
        Log.d(LOG_TAG, "onNothingSelected()");
        mNothingSelectedCalled = true;
    }

}