webService异步加载GridView中图片

效果如图：

类ViewCacheForRandom9:

类Random9GridViewAdapter：

public class Random9GridViewAdapter extends ArrayAdapter<NearPeople> {??
??
??????? private GridView gridView;??
??????? private AsyncImageLoader asyncImageLoader;??
??????? public Random9GridViewAdapter(Activity activity,List<NearPeople> near,GridView gridView1) {??
??????????? super(activity,near);??
??????????? this.gridView = gridView1;??
??????????? asyncImageLoader = new AsyncImageLoader();??
??????? }??
??
??????? public View getView(int position,View convertView,ViewGroup parent) {??
??????????? Activity activity = (Activity) getContext();??
??
??????????? // Inflate the views from XML??
??????????? View rowView = convertView;??
??????????? ViewCacheForRandom9 viewCache;??
??????????? if (rowView == null) {??
??????????????? LayoutInflater inflater = activity.getLayoutInflater();??
??????????????? rowView = inflater.inflate(R.layout.griditem,null);??
??????????????? viewCache = new ViewCacheForRandom9(rowView);??
??????????????? rowView.setTag(viewCache);??
??????????? } else {??
??????????????? viewCache = (ViewCacheForRandom9) rowView.getTag();??
??????????? }??
??????????? NearPeople near = getItem(position);??
??
??????????? // Load the image and set it on the ImageView?
????????????
??????????? String imageUrl = near.getheadUrl();??
??????????? ImageView imageView = viewCache.getImageView();??
??????????? imageView.setTag(imageUrl);??
??????????? Drawable cachedImage = asyncImageLoader.loadDrawable(imageUrl,new ImageCallback() {??
??????????????? public void imageLoaded(Drawable imageDrawable,String imageUrl) {??
??????????????????? ImageView imageViewByTag = (ImageView) gridView.findViewWithTag(imageUrl);??
??????????????????? if (imageViewByTag != null) {??
??????????????????????? imageViewByTag.setImageDrawable(imageDrawable);??
??????????????????? }??
??????????????? }??
??????????? });??
??????????? if (cachedImage == null) {??
??????????????? imageView.setImageResource(R.drawable.head1);??
??????????? }else{??
?????????? imageView.setImageDrawable(cachedImage);??
??????????? }??
??????????? ImageView sex = viewCache.getSex();??
??????????? if(near.getsex().equals("男"))
??? ??{
??? ???sex.setBackgroundResource(R.drawable.male);
??? ??}
??? ??else
??? ???sex.setBackgroundResource(R.drawable.female);
??????????? // Set the text on the TextView??
??????????? TextView textView = viewCache.getDistance();??
??????????? textView.setText(String.valueOf(near.getdistance()));??
??????????? return rowView;??
??????? }??
??
}?

真正调用：

??? //附近的人
???????? txt_around.setOnClickListener(new OnClickListener() {
???????????? public void onClick(View v) {
???????????????? // TODO Auto-generated method stub
???????????????? LinearLayout layout = (LinearLayout) inflater.inflate(
???????????????????????? R.layout.peoplearound,null).findViewById(R.id.lin_aroundpeople);
???????????????? GridView lv=(GridView)layout.getChildAt(0);
???????????????? SoapObject so= WebServiceUtil.getRandom9PeopleList(spotid);
???????????????? TextView morepeople = (TextView)layout.findViewById(R.id.txt_morepeople);
???? ???????? morepeople.setOnClickListener(new OnClickListener(){

???? ? ??@Override
???? ? ??public void onClick(View v) {
???? ? ???// TODO Auto-generated method stub
???? ? ???Intent intent1=new Intent(viewMessageActivity.this,PeopleAroundActivity.class);
???? ? ???viewMessageActivity.this.startActivity(intent1);
???? ? ??}
???? ????? ????
???? ???????? });
??????????????? try
???????????????? {
???????????????? ?SoapObject detail = (SoapObject) so.getProperty("getRandom9PeopleList"
???????? ?????+ "Result");
???????????????? ? Log.v("R",detail.toString());
????????????????? List<NearPeople> list = new ArrayList<NearPeople>();??
????????????????? NearPeople[] n = new NearPeople[detail.getPropertyCount()];
????????????????? for (int i=0;i<detail.getPropertyCount();i++)
????????????????? {
????????????????? ?n[i] = new NearPeople();
????????????????? }
?????????????????
????????????????? n=parsePeolist(detail);
????????????????? for(int i=0;i<n.length;i++){? ?
????????????????????? list.add(new NearPeople( n[i].getheadUrl(),n[i].getsex(),n[i].getdistance()));??
????????????????? }??
????????????????? lv.setAdapter(new?Random9GridViewAdapter(viewMessageActivity.this,list,lv));?
???????????????? }
??????????????? catch(Exception e){
???????????? ????
???????????? ??? Toast.makeText(viewMessageActivity.this,"该景点附近没有游客",Toast.LENGTH_LONG).show();?
???????????? ??? morepeople.setText("该景点附近没有游客");
???????????? ??? morepeople.setClickable(false);
???????????? ????
??????????????? }
???????????????? lin.removeAllViews();
???????????????? lin.addView(layout);????????????????
???? ???????? lv.setOnItemClickListener(new OnItemClickListener(){

???? ????@Override ???? ????public void onItemClick(AdapterView<?> arg0,View arg1,int arg2,???? ??????long arg3) { ???? ?????// TODO Auto-generated method stub ???? ?????Intent intent = new Intent(viewMessageActivity.this,PeopleInfoActivity.class); ???? ?????intent.putExtra("peopleid","v10000001"); ???? ?????startActivity(intent); ???? ????? ???? ????}}); ???? ???????? ???? ???????? ???? ?????? // TextView morepeople1 = (TextView)findViewById(R.id.txt_more); ???? ????????? morepeople.setOnClickListener(new OnClickListener(){ ???? ????????? ? ???? ?? ??@Override ???? ?? ??public void onClick(View v) { ???? ?? ???// TODO Auto-generated method stub ???? ?? ???Intent intent1=new Intent(viewMessageActivity.this,PeopleAroundActivity.class); ???? ?? ???viewMessageActivity.this.startActivity(intent1); ???? ?? ??} ???? ?????? ???? ???? ????????? }); ???????????? } ???????? }); 本文转自：http://blog.csdn.net/ristal/article/details/7610639