android控件开发之AutoCompleteTextView
此控件主要是用在当客户需要输入某些内容时，会提示补全信息供用户选择，用以减少客户的输入操作
此控件中的选择数据，可以是自定义的String数组数据，也可以是list列表数据
JAVA代码：
package com.example.autocompletetext;
import java.util.ArrayList;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
public class MainActivity extends Activity {
private AutoCompleteTextView autoCompleteTextView = null;
//String数组主要是用来适配AutoCompleteTextView对象中客户输入的字符
private String[] CONTRY = new String[]{
"shanghai","beijing","guangzhou","shenzhen","nantong","anqing","anhui",
"hefei","huainan","dongguan","chuzhou","wuxi","suzhou","nanjing","kunshan","henan","lanfang",
"liuan","huaibei","fuyang","bozhou","suzhou","wuhu"
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
autoCompleteTextView = (AutoCompleteTextView)findViewById(R.id.autoComplete);
//创建一个ArrayList对象，并且给list对象动态添加数据。此list是给ArrayAdapter对象提供数据
ArrayList<String> list = new ArrayList<String>();
list.add("testtest");
list.add("tetsssss");
//设置Adapter适配器，可以使用list中的数据，也可以使用String数组数据
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.layout.list_item, /*list*/CONTRY);
//给AutoCompleteTextView对象设置适配器
autoCompleteTextView.setAdapter(adapter);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
主界面main.xml代码如下：
<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<TextView
android:id="@+id/myText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world" />
<AutoCompleteTextView
android:id="@+id/autoComplete"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@id/myText"/>
</RelativeLayout>
list_itm.xml代码如下：
此布局文件主要是用来布置弹出的选择列表的布局
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="10dp"
android:textSize="20sp"
>
</TextView>
效果如下：
注意：AutoCompleteTextView需要输入至少两个的字符才能出现供选择的列表