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android控件開發之AutoCompleteTextView

android控件開發之AutoCompleteTextView

此控件主要是用在當客戶需要輸入某些内容時,會提示補全資訊供使用者選擇,用以減少客戶的輸入操作 此控件中的選擇資料,可以是自定義的String數組資料,也可以是list清單資料 JAVA代碼:

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數組主要是用來适配AutoCompleteTextView對象中客戶輸入的字元

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);

//建立一個ArrayList對象,并且給list對象動态添加資料。此list是給ArrayAdapter對象提供資料

ArrayList<String> list = new ArrayList<String>();

list.add("testtest");

list.add("tetsssss");

//設定Adapter擴充卡,可以使用list中的資料,也可以使用String數組資料

ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.layout.list_item, CONTRY);

//給AutoCompleteTextView對象設定擴充卡

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代碼如下: <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代碼如下: 此布局檔案主要是用來布置彈出的選擇清單的布局

<?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:

android控件開發之AutoCompleteTextView

注意:AutoCompleteTextView需要輸入至少兩個的字元才能出現供選擇的清單

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