Android--输入自动提示AutoCompleteTextView

布局文件：

  <TextView
        android:id="@+id/title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/title" />
    
    <AutoCompleteTextView 
        android:id="@+id/actv"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/title"/>

Activity代码：

package cn.luxh.autocomplete;

import android.os.Bundle;
import android.app.Activity;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        AutoCompleteTextView actv = (AutoCompleteTextView) findViewById(R.id.actv);
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_dropdown_item_1line,getData());
        //设置适配器
        actv.setAdapter(adapter);
        //输入一个字符开始提示
        actv.setThreshold(1);
    }

    /**
     * 模拟数据
     * @return
     */
    private String[] getData(){
        String[] names = {
                "Dwight D. Eisenhower",
                "John F. Kennedy",
                "Lyndon B. Johnson",
                "Richard Nixon",
                "Gerald Ford",
                "Jimmy Carter",
                "Ronald Reagan",
                "George H. W. Bush",
                "Bill Clinton",
                "George W. Bush",
                "Barack Obama"};
        return names;
    }

}

运行效果：