Android Auto prompt text box (autocompletetextview)

Automatic hint text box (Autocompletetextview) can enhance the user experience, shorten the user's input time (Baidu's search box is this effect).

First, define the Autocompletetextview control in XML:

Activity_main.xml:

<linearlayout xmlns:android= "http://schemas.android.com/apk/res/android" xmlns:tools= "http// Schemas.android.com/tools "android:layout_width=" match_parent "android:layout_height=" Match_parent "Android:gravi ty= "center" android:orientation= "vertical" > <autocompletetextview android:id= "@+id/actv_game" a        Ndroid:layout_width= "220DP" android:layout_height= "wrap_content" android:completionhint= "@string/game_" android:completionthreshold= "1" android:hint= "@string/game"/> <autocompletetextview android:id= "@+id/actv_car" android:layout_width= "220DP" android:layout_height= "Wrap_content" Android:completionh int= "@string/car_" android:completionthreshold= "1" android:hint= "@string/car"/> <button and Roid:layout_width= "Wrap_content" android:layout_height= "wrap_content" android:layout_margin= "10DP" an droid:onclick= "GetValue" android:text= "@String/button "/></linearlayout> 

The Completionhint property is the prompt message that is displayed to the user when the data is prompted:

        android:completionhint= "@string/game_"

The Completionthreshold property is the starting position of the prompt, and the default value is 2, which is to start the retrieval after entering two characters. The general setting is 1:

        android:completionthreshold= "1"

There are two autocompletetextview, one fetching the cue data from the XML and the other fetching the cue data from the collection.

Strings.xml

<?xml version= "1.0" encoding= "Utf-8"?><resources> <string name= "App_name" >actv_demo</string > <string name= "action_settings" >Settings</string> <string name= "Hello_world" >hello world!< /string> <string name= "game" > Games </string> <string name= "car" > Car </string> <string name = "Game_" > Please select your favorite games </string> <string name= "Car_" > Please select your preferred car </string> <string name= "button" > Get the value of a text box </string> <string-array name= "Games" > <item> warcraft </item> <item> Warcraft 1&        Lt;/item> <item> Warcraft 2</item> <item> Paladin </item> <item> Paladin 1</item> <item> Paladin 2</item> <item>CS</item> <item>CS1</item> &LT;ITEM&G T cs2</item> <item>CF</item> <item>CF1</item> <item>cf2</item&gt        ; <item>dnf</item&gT <item>DNF1</item> <item>DNF2</item> <item> Legends </item> <item> biography         Chi 1</item> <item> Legends 2</item> <item> World </item> <item> World 1</item> <item> World 2</item> </string-array></resources>

Define the Games array in String.xml.

Mainactivity.java:

Package Com.yx.actv_demo.ui;import Java.util.arraylist;import Java.util.list;import android.app.activity;import Android.os.bundle;import Android.view.view;import Android.widget.arrayadapter;import Android.widget.autocompletetextview;import Android.widget.toast;import Com.yx.actv_demo.  r;/** * * This class describes: main interface * * @author: CS YX * @version: 1.0 * @date: 2014-10-24 pm 3:47:38 */public Class Mainactivity extends Activity {//Game text box private Autocompletetextview actv_game;//game text box adapter private arrayadapter<charsequence> gameadapter;//car Private Autocompletetextview actv_car;private arrayadapter<string> carAdapter;private List< String> cars;//collection Data @overrideprotected void OnCreate (Bundle savedinstancestate) {super.oncreate ( Savedinstancestate); Setcontentview (R.layout.activity_main); Initview ();//Initialize control InitData ();//Initialize data//instantiate adapter (Fetch data from XML) Gameadapter = Arrayadapter.createfromresource (Mainactivity.this,r.array.games, Android. R.layout.simple_spinner_item);//bind adapter displays data Actv_game.setadapter (Gameadapter);//The instantiation adapter takes data from an array or collection Caradapter = new Arrayadapter<string> (mainactivity.this,android. R.layout.simple_spinner_item, cars);//bind adapter displays data Actv_car.setadapter (Caradapter);} /** * * This method describes: Gets the value of the text box * * @param view * View object */public void GetValue (view view) {String game = ""; if (act V_game = null) {game = Actv_game.gettext (). toString ();//Gets the value of the text box}string car = ""; if (actv_car! = null) {car = Actv_car.get Text (). ToString ()//Gets the value of the text box}toast.maketext (Mainactivity.this, "Favorite game is:" + game + "like the car is:" + car,toast.length_long). Show ();} /** * * This method describes: Initialize data */private void InitData () {cars = new arraylist<string> (); for (int i = 0; i < 5; i++) {CA Rs.add ("BMW-" + i); Cars.add ("Mercedes-" + i); Cars.add ("Hummer-" + i); Cars.add ("Land Rover-" + i); Cars.add ("Jeep-" + i); Cars.add ("Audi-" + i); cars . Add ("Ford-" + i); Cars.add ("Infiniti-" + i);}} /** * * This method describes: Initialize the control */private void Initview () {actv_game = (Autocompletetextview) Findviewbyid (r.id.actv_game); Actv_ca R = (Autocompletetextview) Findviewbyid (r. Id.actv_car);}} 

First instance of Arrayadapter:

Arrayadapter.createfromresource (context, Textarrayresid, textviewresid); Contextcontext Object Textarrayresid data collection Idtextviewresidlayout ID

A second Arrayadapter instance:

New Arrayadapter<string> (context, resource, objects); Contextcontext object Resourcelayout idobjects data collection

After instantiating Arrayadapter, Setadapter can!

Actv_game.setadapter (Gameadapter); Actv_car.setadapter (Caradapter);

Effect

The last one gets the value inside the text box (in fact, like TextView, EditText):



Android Auto prompt text box (autocompletetextview)