直接上代码:对象适配器和类适配器
package com.jk.st.adapter;
import com.jk.st.base.Bird;
public class BirdAdapter_ob extends Bird implements ISay {
String name;
public BirdAdapter_ob(String name) {
super(name);
this.name = name;
}
@Override
public void Say() {
if(name.toString().equals("Chicken")){
System.out.println("Chicken voice is jiji");
}else if(name.toString().equals("Eagle")){
System.out.println("Eagle voice is hoo");
}else{
System.out.println("Other Bird voice");
}
}
}
package com.jk.st.adapter;
import com.jk.st.base.Bird;
public class BirdAdapter implements ISay {
Bird bird;
public BirdAdapter(Bird _bird){
bird = _bird;
}
@Override
public void Say() {
if(bird.toString().equals("Chicken")){
System.out.println("Chicken voice is jiji");
}else if(bird.toString().equals("Eagle")){
System.out.println("Eagle voice is hoo");
}else{
System.out.println("Other Bird voice");
}
}
}
package com.jk.st.adapter;
public interface ISay {
void Say();
}
package com.jk.st.base;
public abstract class Bird {
private String name;
public Bird(String name){
this.name = name;
}
void Sleep(){
System.out.println("Bird need sleep!");
}
public String toString(){
return name;
}
}
package com.jk.st.base;
public class Chicken extends Bird {
public Chicken(String name){
super(name);
}
}
package com.jk.st.base;
public class Eagle extends Bird {
public Eagle(String name) {
super(name);
// TODO Auto-generated constructor stub
}
}
package com.jk.st;
import com.jk.st.adapter.BirdAdapter;
import com.jk.st.adapter.BirdAdapter_ob;
import com.jk.st.base.Bird;
import com.jk.st.base.Chicken;
import com.jk.st.base.Eagle;
public class Client {
/**
* @param args
*/
public static void main(String[] args) {
//对象适配器
Bird b = new Chicken("Chicken");
//System.out.println(b.toString());
BirdAdapter ba = new BirdAdapter(b);
ba.Say();
Bird b2 = new Eagle("Eagle");
ba = new BirdAdapter(b2);
ba.Say();
//类适配器
BirdAdapter_ob bb = new BirdAdapter_ob("Chicken");
bb.Say();
bb = new BirdAdapter_ob("Eagle");
bb.Say();
}
}
下面代码时对ArrayAdapter的测试
package com.example.adaptertest01;
import java.util.ArrayList;
import android.os.Bundle;
import android.app.Activity;
import android.util.Log;
import android.view.Menu;
import android.widget.ListView;
import android.widget.TextView;
public class MainActivity extends Activity {
private static final String TAG = "MainActivity";
ListView lv;
TextView atv;
String[] arr={"AAA","BBB","CCC","DDD"};
ArrayList<String> al = new ArrayList<String>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
lv = (ListView) findViewById(R.id.lv);
atv = new TextView(this);
atv.setText("Java");
for(String str : arr){
al.add(str);
}
al.add(atv.getText().toString());
MyArrayAdapter mad = new MyArrayAdapter(this, android.R.layout.simple_list_item_1, al);
Log.i(TAG,atv.getText().toString());
//mad.clear();
lv.setAdapter(mad);
}
}
package com.example.adaptertest01;
import java.util.List;
import android.content.Context;
import android.widget.ArrayAdapter;
import android.widget.TextView;
public class MyArrayAdapter extends ArrayAdapter<String> {
public MyArrayAdapter(Context context, int textViewResourceId) {
super(context, textViewResourceId);
// TODO Auto-generated constructor stub
}
public MyArrayAdapter(Context context, int resource,
int textViewResourceId, List<String> objects) {
super(context, resource, textViewResourceId, objects);
// TODO Auto-generated constructor stub
}
public MyArrayAdapter(Context context, int resource,
int textViewResourceId, String[] objects) {
super(context, resource, textViewResourceId, objects);
// TODO Auto-generated constructor stub
}
public MyArrayAdapter(Context context, int resource, int textViewResourceId) {
super(context, resource, textViewResourceId);
// TODO Auto-generated constructor stub
}
public MyArrayAdapter(Context context, int textViewResourceId,
List<String> objects) {
super(context, textViewResourceId, objects);
// TODO Auto-generated constructor stub
}
public MyArrayAdapter(Context context, int textViewResourceId,
String[] objects) {
super(context, textViewResourceId, objects);
// TODO Auto-generated constructor stub
}
@Override
public String toString() {
// TODO Auto-generated method stub
return super.toString();
}
}
<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" >
<ListView
android:id= "@+id/lv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:text="@string/hello_world"
android:textSize="30sp"/>
</RelativeLayout>