Android UI Control Series: Autocompletetextview (Auto tip)

Autocompletetextview function is similar to Baidu or Google in the search bar when entering information, pop-up and input information close to the prompt information. Of course, there are some adapters to use here.

Two smart input boxes are available in Android, which are Multiautocompletetextview, Autocompletetextview. They function roughly the same, and the difference between it and Autocompletetextview is that Multiautocompletetextview can always add new selection values in the input box. The writing method is also different, and you need to call Settokenizer () after Setadapter. Here is a detailed description.

First, Autocompletetextview

1. Introduction

An editable text view that pops up when the user enters information. The hint list is displayed in a drop-down menu from which the user can select an item to complete the input. The hint list is the data obtained from a data adapter.

2. Important Methods

Clearlistselection (): Clears the selected list item

Dismissdropdown (): If there is a close drop-down menu

Getadapter (): Get Adapter
3. Notice of Creation

(1) Layout file

<autocompletetextview   android:id= "@+id/edit"   android:layout_width= "match_parent"   android:layout _height= "Wrap_content"/>

(2) procedure

Instantiating an adapter

arrayadapter<string> adapter = new Arrayadapter<string> (this,android. R.layout.simple_dropdown_item_1line, STRs);

Setting up the adapter

Edit.setadapter (adapter);

Second, Multiautocompletetextview

1. Introduction

Inheriting from Autocompletetextview, extending the length of the Autocompletetextview, you have to provide a multiautocompletetextview.tokenizer to differentiate the different substrings

2. Important Methods

Enoughtofilter (): Filter When text length exceeds threshold

Performvalidation (): Instead of validating the entire text, this subclass method validates each individual text tag

Settokenizer (Multiautocompletetextview.tokenizer t); Tokenizer settings will be used to determine the text-related range when the user is typing
3. Notice of Use

(1) Layout file

<multiautocompletetextview   android:id= "@+id/edit1"   android:layout_width= "Match_parent"   android: layout_height= "Wrap_content"/>

(2) procedure

Instantiating an adapter

arrayadapter<string> adapter = new Arrayadapter<string> (this,android. R.layout.simple_dropdown_item_1line, STRs);

Determine scope

Edit1.settokenizer (New Multiautocompletetextview.commatokenizer ())

Here's an example.

Autocommittest.java

Package Org.hualang.auto;  Import android.app.Activity;  Import Android.os.Bundle;  Import Android.widget.ArrayAdapter;  Import Android.widget.AutoCompleteTextView;    Import Android.widget.MultiAutoCompleteTextView; public class Autocommittest extends activity {/** Called when the activity is first created. */Private STA      TIC final string[] autostring=new string[]{"Welcome", "Well", "Weatch", "Weexeview", "Werap"};          @Override public void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);          Setcontentview (R.layout.main); Associate Keyword arrayadapter<string> adapter=new arrayadapter<string> (this, Android.          R.layout.simple_dropdown_item_1line, autostring);          Autocompletetextview autocomplete= (Autocompletetextview) Findviewbyid (R.id.auto);          Autocomplete.setadapter (adapter); Multiautocompletetextview multi= (MultiautocompLetetextview) Findviewbyid (R.id.multi);          Add Adapter to Autocompletetextview Multi.setadapter (adapter);      Multi.settokenizer (New Multiautocompletetextview.commatokenizer ()); }  }

Main.xml

<?xml version= "1.0" encoding= "Utf-8"?> <linearlayout  xmlns:android= "http://schemas.android.com/apk/ Res/android "      android:orientation=" vertical "      android:layout_width=" fill_parent "      android:layout_ height= "Fill_parent"      >  <textview      android:layout_width= "fill_parent"      android:layout_ height= "Wrap_content"      android:text= "Auto Prompt function Demo"      />  <autocompletetextview          android:id= "@+ Id/auto "          android:layout_width=" fill_parent "          android:layout_height=" wrap_content "  />  <multiautocompletetextview          android:id= "@+id/multi"          android:layout_width= "Fill_parent          " android:layout_height= "Wrap_content"  />  </LinearLayout>

The results of the operation are as follows:

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