ListView适配不同item范例

<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"
>

<ListView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/listView" />

</RelativeLayout>

<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"
>

<WebView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/webView" />

</RelativeLayout>

<?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" >
<ImageView
android:id="@+id/image"
android:layout_width="80dp"
android:layout_height="80dp"
android:src="@drawable/ic_launcher"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="@+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView
android:id="@+id/date"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>

</LinearLayout>

<?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="vertical" >

<TextView
android:id="@+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="@+id/date"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView
android:id="@+id/writer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>

</LinearLayout>

public class MyData {
private String title;
private String link;
private String imgs;
private String description;
private String copyright;
private String pubDate;
private String comments;
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getLink() {
return link;
}
public void setLink(String link) {
this.link = link;
}
public String getImgs() {
return imgs;
}
public void setImgs(String imgs) {
this.imgs = imgs;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String getCopyright() {
return copyright;
}
public void setCopyright(String copyright) {
this.copyright = copyright;
}
public String getPubDate() {
return pubDate;
}
public void setPubDate(String pubDate) {
this.pubDate = pubDate;
}
public String getComments() {
return comments;
}
public void setComments(String comments) {
this.comments = comments;
}
public MyData(String title, String link, String imgs, String description,
String copyright, String pubDate, String comments) {
super();
this.title = title;
this.link = link;
this.imgs = imgs;
this.description = description;
this.copyright = copyright;
this.pubDate = pubDate;
this.comments = comments;
}
public MyData() {
super();
}
@Override
public String toString() {
return "MyData [title=" + title + ", link=" + link + ", imgs=" + imgs
+ ", description=" + description + ", copyright=" + copyright
+ ", pubDate=" + pubDate + ", comments=" + comments + "]";
}

}

public class MyBaseAdapter extends BaseAdapter {
private Context context;
private ArrayList<MyData> list;
private static final int Type_No_Img = 0;
private static final int Type_Has_Img = 1;

public MyBaseAdapter(Context context, ArrayList<MyData> list) {
this.context = context;
this.list = list;
}

@Override
public int getCount() {
return list.size();
}

@Override
public Object getItem(int position) {
return list.get(position);
}

@Override
public long getItemId(int position) {
return position;
}

@Override
public int getViewTypeCount() {
return 2;
}

@Override
public int getItemViewType(int position) {
if (list.get(position).getImgs().endsWith(".jpg")) {
return Type_Has_Img;
}
return Type_No_Img;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
int type = getItemViewType(position);
ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder();
switch (type) {
case Type_No_Img:
convertView = View.inflate(context, R.layout.no_image, null);
holder.writer = (TextView) convertView
.findViewById(R.id.writer);
holder.writer.setText(list.get(position).getCopyright());

break;
case Type_Has_Img:
convertView = View.inflate(context, R.layout.has_image, null);
holder.image = (ImageView) convertView.findViewById(R.id.image);
BitmapUtils bitmapUtils=new BitmapUtils(context);
bitmapUtils.display(holder.image, list.get(position).getImgs());
break;

default:
break;
}
holder.title = (TextView) convertView.findViewById(R.id.title);
holder.date = (TextView) convertView.findViewById(R.id.date);
holder.title.setText(list.get(position).getTitle());
holder.date.setText(list.get(position).getPubDate());
convertView.setTag(holder);
} else {
holder=(ViewHolder) convertView.getTag();
switch (type) {
case Type_Has_Img:
BitmapUtils bitmapUtils=new BitmapUtils(context);
bitmapUtils.display(holder.image, list.get(position).getImgs());
break;
case Type_No_Img:
holder.writer.setText(list.get(position).getCopyright());
break;

default:
break;
}
holder.title.setText(list.get(position).getTitle());
holder.date.setText(list.get(position).getPubDate());
}

return convertView;
}

class ViewHolder {
ImageView image;
TextView title, date, writer;

}

}

public class WebActivity extends Activity {

private static final String ATG = "WebActivity";

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_web);
WebView webView = (WebView) findViewById(R.id.webView);
Intent intent = getIntent();
String link = intent.getStringExtra("link");
Log.i(ATG, link);
webView.setWebChromeClient(new WebChromeClient());
webView.loadUrl(link);
}

}

public class MainActivity extends Activity {

private ListView listView;
private MyData data;
private ArrayList<MyData> list;
Handler handler=new Handler(){
public void handleMessage(android.os.Message msg) {
if(msg.what==0){
listView.setAdapter(new MyBaseAdapter(MainActivity.this, list));
}
};
};

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// 初始化控件
listView = (ListView) findViewById(R.id.listView);
getInfo("http://www.sciencenet.cn/xml/iphoneInterface.aspx?type=news&nums=20&pass=");
listView.setOnItemClickListener(new OnItemClickListener() {

@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Intent intent=new Intent(MainActivity.this,WebActivity.class);
intent.putExtra("link", list.get(position).getLink());
startActivity(intent);
}
});
}

private void getInfo(final String path) {
new Thread() {
public void run() {
try {
URL url = new URL(path);
HttpURLConnection openConnection = (HttpURLConnection) url
.openConnection();
int responseCode = openConnection.getResponseCode();
if (responseCode == 200) {
InputStream inputStream = openConnection
.getInputStream();
getPull(inputStream);
}
} catch (Exception e) {
e.printStackTrace();
}

};
}.start();
}

protected void getPull(InputStream inputStream) {
// 获取工厂
try {
XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
XmlPullParser newPullParser = factory.newPullParser();
newPullParser.setInput(inputStream, "utf-8");
int type = newPullParser.getEventType();
while (type != XmlPullParser.END_DOCUMENT) {
String name = newPullParser.getName();
switch (type) {
case XmlPullParser.START_DOCUMENT:
list = new ArrayList<MyData>();
break;
case XmlPullParser.START_TAG:
if(name.equals("item")){
data = new MyData();
}else if(name.equals("title")){
data.setTitle(newPullParser.nextText());
}else if(name.equals("link")){
data.setLink(newPullParser.nextText());
}else if(name.equals("imgs")){
data.setImgs(newPullParser.nextText());
}else if(name.equals("description")){
data.setDescription(newPullParser.nextText());
}else if(name.equals("copyright")){
data.setCopyright(newPullParser.nextText());
}else if(name.equals("pubDate")){
data.setPubDate(newPullParser.nextText());
}

break;
case XmlPullParser.END_TAG:
if(name.equals("item")){
list.add(data);
}
break;

default:
break;
}
type = newPullParser.next();
}
} catch (Exception e) {
e.printStackTrace();
}
for (MyData m:list ) {
System.out.println(m.toString());
}
handler.sendEmptyMessage(0);
}

}