Go语言视频零基础入门到精通

aopre8

自动完成输入框自动提示功能的菜单
AutoCompleteTextView 与数组


①新建工程
②修改 main.xml 布局，添加一个 TextView、一个 AutoCompleteTextView、一个 Button


<?xml version="1.0" encoding="utf-8"?>

<AbsoluteLayout

android:id="@+id/widget0"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

xmlns:android="http://schemas.android.com/apk/res/android"

>

<TextView

android:id="@+id/TextView_InputShow"

android:layout_width="228px"

android:layout_height="47px"

android:text="请输入"

android:textSize="25px"

android:layout_x="42px"

android:layout_y="37px"

>

</TextView>

<AutoCompleteTextView

android:id="@+id/AutoCompleteTextView_input"

android:layout_width="275px"

android:layout_height="wrap_content"

android:text=""

android:textSize="18sp"

android:layout_x="23px"

android:layout_y="98px"

>

</AutoCompleteTextView>

<Button

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_x="127dip"

android:text="清空"

android:id="@+id/Button_clean"

android:layout_y="150dip">

</Button>

</AbsoluteLayout>
复制代码
③修改 mainActivity.java，添加自动完成功能
package zyf.Ex_Ctrl_13ME;

/*导入使用的包*/

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.widget.ArrayAdapter;

import android.widget.AutoCompleteTextView;

import android.widget.Button;

import android.widget.TextView;

public class Ex_Ctrl_13ME extends Activity {

/** Called when the activity is first created. */

/*定义要使用的类对象*/

private String[] normalString =

new String[] {

"Android", "Android Blog","Android Market", "Android SDK",

"Android AVD","BlackBerry","BlackBerry JDE", "Symbian",

"Symbian Carbide", "Java 2ME","Java FX", "Java 2EE",

"Java 2SE", "Mobile", "Motorola", "Nokia", "Sun",

"Nokia Symbian", "Nokia forum", "WindowsMobile", "Broncho",

"Windows XP", "Google", "Google Android ", "Google 浏览器",

"IBM", "MicroSoft", "Java", "C++", "C", "C#", "J#", "VB" };

@SuppressWarnings("unused")

private TextView show;

private AutoCompleteTextView autoTextView;

private Button clean;

private ArrayAdapter<String> arrayAdapter;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

/*装入主屏布局main.xml*/

setContentView(R.layout.main);

/*从XML中获取UI元素对象*/

show = (TextView) findViewById(R.id.TextView_InputShow);

autoTextView =

(AutoCompleteTextView) findViewById(R.id.AutoCompleteTextView_input);

clean = (Button) findViewById(R.id.Button_clean);

/*实现一个适配器对象，用来给自动完成输入框添加自动装入的内容*/

arrayAdapter = new ArrayAdapter<String>(this,

android.R.layout.simple_dropdown_item_1line, normalString);

/*给自动完成输入框添加内容适配器*/

autoTextView.setAdapter(arrayAdapter);

/*给清空按钮添加点击事件处理监听器*/



clean.setOnClickListener(new Button.OnClickListener() {

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

/*清空*/

autoTextView.setText("");

}

});

}

}
复制代码

结果：

彩虹糖梦

学习下。。。。

yy1020

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水中月

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