AutoCompleteTextView（输入框预匹配）

//AutoCompleteTextView，MultiAutoCompleteTextView的区别：MultiAutoCompleteTextView可以定义分隔符，匹配多项。

public class MainActivity extends ActionBarActivity {
	AutoCompleteTextView auto1;
	MultiAutoCompleteTextView auto2;
	String res[]={"nihao","hello","hi"};
	String res2[]={"zhangsan","lisi","laowang"};
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		auto1=(AutoCompleteTextView) findViewById(R.id.autoCompleteTextView1);
		ArrayAdapter<String> adapter=new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,res);
		auto1.setAdapter(adapter);
		auto2=(MultiAutoCompleteTextView) findViewById(R.id.multiAutoCompleteTextView1);
		ArrayAdapter<String> adapter2=new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,res2);
		auto2.setAdapter(adapter2);
//		设置以逗号为分隔符作为结束的字符
		auto2.setTokenizer(new MultiAutoCompleteTextView.CommaTokenizer());
	}

}

<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"
    tools:context="com.example.xin.autocompletetextview.MainActivity" >

    <AutoCompleteTextView
        android:id="@+id/autoCompleteTextView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="请输入内容" >
    </AutoCompleteTextView>

    <MultiAutoCompleteTextView
        android:id="@+id/multiAutoCompleteTextView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="请输入联系人" >
    </MultiAutoCompleteTextView>

</LinearLayout>