我们在前面章节 Android AutoCompleteTextView 自动完成文本框 介绍了自动提示控件 AutoCompleteTextView

MultiAutoCompleteTextView ( 多项自动完成文本框 ) 继承自 AutoCompleteTextView ，除了有自动完成功能，还支持分隔符分隔的多个自动完成

MultiAutoCompleteTextView

创建一个 MultiAutoCompleteTextView 也很简单

<MultiAutoCompleteTextView
    android:id="tag"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" />

MultiAutoCompleteTextView 有很多属性，不过这些属性都继承自 AutoCompleteTextView

MultiAutoCompleteTextView 属性

1. 创建一个 空的 Android 项目 cn.twle.android.MultiAutoCompleteTextView

2. 修改 activity_main.xml 添加一个 AutoCompleteTextView

   <?xml version="1.0" encoding="utf-8" ?>
   <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:orientation="vertical"
       android:padding="5dp">
   
       <MultiAutoCompleteTextView
           android:id="@+id/tag"
           android:layout_width="300dp"
           android:layout_height="wrap_content"
           android:completionThreshold="1"/>
   
   </LinearLayout>
   

   • android:completionThreshold="1"

     设置了输入一个字就显示提示

3. 修改 MainActivity.java 添加数据

   package cn.twle.android.multiautocompletetextview;
   
   import android.os.Bundle;
   import android.support.v7.app.AppCompatActivity;
   
   import android.widget.MultiAutoCompleteTextView;
   import android.widget.ArrayAdapter;
   
   public class MainActivity extends AppCompatActivity {
   
       private MultiAutoCompleteTextView tag;
   
       private static final String[] data = new String[]{
               "python", "perl", "php", "java", "swift","c++","c","c#","javascript","ruby"
       };
   
       @Override
       protected void onCreate(Bundle savedInstanceState) {
           super.onCreate(savedInstanceState);
           setContentView(R.layout.activity_main);
   
           tag = (MultiAutoCompleteTextView) findViewById(R.id.tag);
   
           ArrayAdapter<String> adapter = new ArrayAdapter<String>(MainActivity.
                   this, android.R.layout.simple_dropdown_item_1line, data);
   
           tag.setAdapter(adapter);
   
           // 设置分隔符
           tag.setTokenizer(new MultiAutoCompleteTextView.CommaTokenizer());
       }
   }
   

参考文档

1. Android MultiAutoCompleteTextView