Android 的自訂Spinner組件實現方式

標籤：

一、Android的API方式預設實現的方式

   1.layout下編輯main_activity.xml

<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" >    <Spinner        android:id="@+id/spinner01"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:entries="@array/citys" />    <Spinner        android:id="@+id/spinner02"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_below="@id/spinner01" />          <Spinner        android:id="@+id/spinner03"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_below="@id/spinner02" /></RelativeLayout>

　　2.string.xml代碼

       

<?xml version="1.0" encoding="utf-8"?><resources>    <string name="app_name">Android_015</string>    <string name="action_settings">Settings</string>    <string name="hello_world">Hello world!</string>    <string-array name="citys">        <item>北京</item>        <item>上海</item>        <item>廣州</item>        <item>深圳</item>        <item>珠海</item>        <item>湖州</item>    </string-array>        <string name="tv">TextView</string></resources>

　　3.layout下面的自訂的下拉選項樣式 Spinner_layout.xml和me_layout.xml

<?xml version="1.0" encoding="utf-8"?><TextView xmlns:android="http://schemas.android.com/apk/res/android"    android:id="@android:id/text1"    android:layout_width="match_parent"    android:layout_height="wrap_content"    style="?android:attr/spinnerDropDownItemStyle"    android:ellipsize="marquee"    android:drawableLeft="@drawable/ic_launcher"    android:textColor="#00ff00"   />

        me_layout.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="horizontal" >    <TextView        android:id="@+id/textView1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:drawableLeft="@drawable/ic_launcher"        android:paddingRight="8dip"        android:paddingTop="8dip"        android:text="@string/tv"        android:textSize="25sp" />    <TextView        android:id="@+id/textView2"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:paddingLeft="8dip"        android:paddingTop="8dip"        android:text="@string/tv"        android:textSize="25sp" /></LinearLayout>

　　4.Java後台代碼

    

package com.example.android_015;import java.util.ArrayList;import java.util.List;import com.example.android_015.entity.Person;import android.app.Activity;import android.os.Bundle;import android.view.Menu;import android.view.View;import android.widget.AdapterView;import android.widget.AdapterView.OnItemSelectedListener;import android.widget.ArrayAdapter;import android.widget.Spinner;import android.widget.Toast;public class MainActivity extends Activity implements OnItemSelectedListener{private Spinner spinner,spinner03;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);spinner = (Spinner) findViewById(R.id.spinner02);spinner.setOnItemSelectedListener(this);// 擷取string.xml的資源檔的數組String[] citys = getResources().getStringArray(R.array.citys);// 數組適配器的建立// 1.執行個體化的方式建立適配器ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item, citys);// 2.API建議的方式建立adaptArrayAdapter<CharSequence> adapter1 = ArrayAdapter.createFromResource(this, R.array.citys, android.R.layout.simple_spinner_item);adapter.setDropDownViewResource(R.layout.spinner_layout);//設定下拉試圖的樣式//adapter1.setDropDownViewResource(android.R.layout.simple_list_item_checked);spinner.setAdapter(adapter);//自訂的適配器下垃選項spinner03 = (Spinner) findViewById(R.id.spinner03);// 建立資料來源List<Person>  persons=new ArrayList<Person>();persons.add(new Person("張三", "上海 "));persons.add(new Person("李四", "上海 "));persons.add(new Person("王五", "北京" ));persons.add(new Person("趙六", "廣州 "));//  建立Adapter綁定資料來源MyAdapter _MyAdapter=new MyAdapter(this, persons);//綁定Adapterspinner03.setAdapter(_MyAdapter);}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {getMenuInflater().inflate(R.menu.main, menu);return true;}//選中按鈕的實現方法@Overridepublic void onItemSelected(AdapterView<?> parent, View view, int position,long id) {System.out.println("parent:"+parent.getClass()); //父組件 spinnerSystem.out.println("view:"+view.getClass()); //載入的下拉式清單 xml類型 TextViewSystem.out.println("position="+position);     System.out.println("id="+id);//spinner.getSelectedItem().toString() 被選中的下拉式清單值 //spinner.getSelectedView() 被選中的 下垃組件屬性//spinner.getSelectedItemPosition()  被選中的位置//spinner.getSelectedItemId() 被選中的id String str=parent.getItemAtPosition(position).toString();Toast.makeText(this, "你點擊選中的是:"+str, 2000).show();}//未選中的實現方法@Overridepublic void onNothingSelected(AdapterView<?> parent) {}}

　　5.Person類

package com.example.android_015.entity;/** * 使用者物件 * @author hbj403 */public class Person {private String personName;private String personAddress;public Person(String personName,String personAddress) {super();this.personName=personName;this.personAddress=personAddress;}public String getPersonName() {return personName;}public void setPersonName(String personName) {this.personName = personName;}public String getPersonAddress() {return personAddress;}public void setPersonAddress(String personAddress) {this.personAddress = personAddress;}}

　　6、自訂MyAdapter適配器類

      

package com.example.android_015;import java.util.List;import android.content.Context;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.TextView;import com.example.android_015.entity.Person;/** * 自訂的適配器類 * @author hbj403 */public class MyAdapter extends BaseAdapter {private List<Person> mList;    private Context mContext;    public MyAdapter(Context pContext,List<Person> pList) {    this.mContext=pContext;    this.mList=pList;}    @Overridepublic int getCount() {return mList.size();}@Overridepublic Object getItem(int position) {return mList.get(position);}@Overridepublic long getItemId(int position) {return position;}//最主要代碼@Overridepublic View getView(int position, View convertView, ViewGroup parent) {LayoutInflater _LayoutInflater=LayoutInflater.from(mContext);convertView=_LayoutInflater.inflate(R.layout.me_layout, null);if(convertView!=null){TextView _TextView1=(TextView)convertView.findViewById(R.id.textView1);TextView _TextView2=(TextView)convertView.findViewById(R.id.textView2);_TextView1.setText(mList.get(position).getPersonName());_TextView2.setText(mList.get(position).getPersonAddress());}return convertView;}}

　　二、運行方式

監聽事件和第一種方法相同:

部分連結文檔來自：轉自：http://blog.csdn.net/jiangqq781931404/article/details/7285623

 

Android 的自訂Spinner組件實現方式