android的控件详解autoCompleteContextTextView和MultiAutoCompleteContextTextView

AutoCompleteContextTextView和MultiAutoCompleteContextTextView控件类似于百度搜索框的提示栏，和有道词典的提示功能

例如我们输入关键字会有，提示，这两个控件完成的就是这个功能，不过autoCompleteContextTextView是匹配一个而MultiautoCompleteContextTextView匹配多个，以分割符作为分割点，再次匹配

代码测试

package com.example.autocontextview;




import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.AdapterView.AdapterContextMenuInfo;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import android.widget.MultiAutoCompleteTextView;




public class MainActivity extends Activity {
//声明控件
private AutoCompleteTextView autoContextTextView=null;
private MultiAutoCompleteTextView multiContextTextView=null;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //获取控件
        autoContextTextView=(AutoCompleteTextView) findViewById(R.id.autoCompleteTextView1);
        multiContextTextView=(MultiAutoCompleteTextView) findViewById(R.id.multiAutoCompleteTextView1);
        //定义数据源
        String[] res={"leige1","leige2","leige3","beijin","beijin1",
        "beijin2","beijin3","shanghai1","shanghai2","shanghai3"
        };
        //定义适配器
        ArrayAdapter< String> adapter=
        //三个参数，布局对象，布局（这里采用系统布局），数据源
        new ArrayAdapter<String>(MainActivity.this
        , R.layout.support_simple_spinner_dropdown_item,
        res);
        //设置适配器
        autoContextTextView.setAdapter(adapter);
        multiContextTextView.setAdapter(adapter);
        //设置分隔符，autoCompleteContextTextView不需要设置，，，MultiautoCompleteContextTextView需要设置
        multiContextTextView.setTokenizer(new MultiAutoCompleteTextView.CommaTokenizer());
    }




}

布局配置

<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.autocontextview.MainActivity" >


    <AutoCompleteTextView
        android:id="@+id/autoCompleteTextView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginLeft="22dp"
        android:layout_marginTop="15dp"
        android:ems="10"
        android:completionThreshold="2"
        android:hint="@string/AutoCompeleteTextView"
         >


        <requestFocus />
    </AutoCompleteTextView>
    <!-- -android:completionThreshold="2"配置开始匹配的字符个数 -->


    <MultiAutoCompleteTextView
        android:id="@+id/multiAutoCompleteTextView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/autoCompleteTextView1"
        android:layout_marginTop="47dp"
        android:ems="10"
        android:hint="@string/MutiAutoContextTextView" />


</RelativeLayout>

运行结果

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