android控制項開發之AutoCompleteTextView
android控制項開發之AutoCompleteTextView此控制項主要是用在當客戶需要輸入某些內容時,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制項中的選擇資料,可以是自訂的String數組資料,也可以是list列表資料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數組主要是用來適配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,並且給list對象動態添加資料。此list是給ArrayAdapter對象提供資料
ArrayList list = new ArrayList();
list.add("testtest");
list.add("tetsssss");
//設定Adapter適配器,可以使用list中的資料,也可以使用String數組資料
ArrayAdapter adapter = new ArrayAdapter(this, R.layout.list_item, /*list*/CONTRY);
//給AutoCompleteTextView對象設定適配器
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;
}
}
主介面main.xml代碼如下: 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" >
android:id="@+id/myText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world" />
android:id="@+id/autoComplete"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@id/myText"/>
list_itm.xml代碼如下:此布局檔案主要是用來布置彈出的挑選清單的布局
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="10dp"
android:textSize="20sp"
>
效果如下:
注意:AutoCompleteTextView需要輸入至少兩個的字元才能出現供選擇的列表