Android学习之AutoCompleteTextView和MultiAutoCompleteTextView

转自：http://blog.csdn.net/qq_28468727/article/details/52258409

AutoCompleteTextView、MultiAutoCompleteTextView自动完成输入内容的控件

如果我们想实现用户输入的内容有自动提示功能，类似百度搜索结果，AutoCompleteTextView和MultiAutoCompleteTextView可以实现类似功能

MainActivity.JAVA:

public class MainActivity extends AppCompatActivity {  

    private AutoCompleteTextView autoTextView;
    private MultiAutoCompleteTextView multiAutoCompleteTextView;
    private ArrayList<String> list;
    private ArrayAdapter<String> adapter;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);  

        autoTextView = (AutoCompleteTextView) findViewById(R.id.autotext);
        multiAutoCompleteTextView = (MultiAutoCompleteTextView) findViewById(R.id.multiauto);
        //对list进行初始化
        list = new ArrayList<String>();
        list.add("123456");
        list.add("12345");
        list.add("1234");
        list.add("google");
        list.add("goole map");
        list.add("goole chrome");  

        //使用list中的数据对适配器adapter进行初始化
        //第二个参数表示适配器为下拉风格
        adapter = new ArrayAdapter<String>(this,android.R.layout.simple_dropdown_item_1line,list);
        //为AutoCompleteTextView添加适配器
        autoTextView.setAdapter(adapter);  

        //multiAutoCompleteTextView添加适配器
        multiAutoCompleteTextView.setAdapter(adapter);
        //完成对选项的拆分，以逗号隔开
        multiAutoCompleteTextView.setTokenizer(new MultiAutoCompleteTextView.CommaTokenizer());
    }
}  

activity_main.xml：

<?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"
    tools:context="com.example.administrator.edittextdemo.MainActivity">  

    <TextView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/textview1"
    android:text="AutoCompleteTextView"/>  

    <AutoCompleteTextView
        android:id="@+id/autotext"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />  

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/textview2"
        android:text="MultiAutoCompleteTextView"/>  

    <MultiAutoCompleteTextView
        android:id="@+id/multiauto"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
</LinearLayout>