Android学习之AutoCompleteTextView和MultiAutoCompleteTextView

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>