自我認知:AutoCompleteTextView就像他的名字那樣,是自動匹配文本的View。而實際上AutoCompleteTextView這個空間的功能就是這樣的。但只能由前向後進行搜索。
myautoCompleteTextView項目目錄結構如下圖:
項目運行結果如下圖:
activity_main.xml代碼
只在相對佈局中添加一個AutoCompleteTextView控件。
<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:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">
<AutoCompleteTextView
android:id="@+id/autoCompleteTextView_id"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</RelativeLayout>
MainActivity.java代碼
這裏使用一個字符串來存數據,用ArrayAdapter來生成一個adapter,ArrayAdapter的構造方法是:arrayAdapter = new ArrayAdapter(MainActivity.this,android.R.layout.simple_list_item_1,mData);特別說明的是安卓系統提供的一種佈局格式android.R.layout.simple_list_item_1
package com.example.administrator.myautocompletetestview;
import android.app.Activity;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
public class MainActivity extends Activity {
private AutoCompleteTextView autoCompleteTextView;
private ArrayAdapter<String> arrayAdapter;
private String[] mData={"AutoCompleteTextView","GridView","ListView","BaseAdapter","LinearLayout","LayoutInflater","FrameLayout","RelativeLayout"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
autoCompleteTextView= (AutoCompleteTextView) findViewById(R.id.autoCompleteTextView_id);
arrayAdapter = new ArrayAdapter<String>(MainActivity.this,android.R.layout.simple_list_item_1,mData);
autoCompleteTextView.setAdapter(arrayAdapter);
}
}
AndroidManifest.xml代碼
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.administrator.myautocompletetestview" >
<application
android:allowBackup="true"
android:icon="@mipmap/penguin"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
自我總結:
學習AutoCompleteTextView控件,因爲自己沒有重新去寫一個adapter,這裏用的是ArrayAdapter,所以代碼量少了很多。