我使用以下爲我的ListView代碼..無盡的ListView表現得像一個簡單的ListView
我FragmentActivity
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
View view = inflater.inflate(R.layout.home, container, false);
listView = (ListView) view.findViewById(R.id.listView);
listView.setAdapter(new CustomArrayAdapterForHome(mContext,questions));
return view;
}
這裏是ListView的
@SuppressLint("DefaultLocale")
public class CustomArrayAdapterForHome extends EndlessAdapter
{
private final LayoutInflater inflator;
protected ImageLoader imageLoader;
private DisplayImageOptions options;
private RotateAnimation rotate=null;
private View pendingView = null;
public CustomArrayAdapterForHome(Context ctx,ArrayList<Question> questionList)
{
super(new ArrayAdapter<Question>(ctx, R.layout.question_adapter_layout, questionList));
inflator = mContext.getLayoutInflater();
imageLoader = ImageLoader.getInstance();
options = new DisplayImageOptions.Builder()
.cacheInMemory()
.cacheOnDisc()
.showImageForEmptyUri(R.drawable.user_male)
.displayer(new RoundedBitmapDisplayer(5))
.build();
rotate=new RotateAnimation(0f, 360f, Animation.RELATIVE_TO_SELF,
0.5f, Animation.RELATIVE_TO_SELF,
0.5f);
rotate.setDuration(600);
rotate.setRepeatMode(Animation.RESTART);
rotate.setRepeatCount(Animation.INFINITE);
}
class ViewHolder
{
// MY CODE
}
@Override
public int getCount() {
return questions.size();
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
final Question question = questions.get(position);
final OpenionUser myUser = question.getUser();
// MY CODE
return view;
}
@Override
protected View getPendingView(ViewGroup parent)
{
View row = LayoutInflater.from(parent.getContext()).inflate(R.layout.row, null);
pendingView = row.findViewById(android.R.id.text1);
pendingView.setVisibility(View.GONE);
pendingView=row.findViewById(R.id.throbber);
pendingView.setVisibility(View.VISIBLE);
startProgressAnimation();
return(row);
}
private void startProgressAnimation()
{
if (pendingView!=null)
{
pendingView.startAnimation(rotate);
}
}
@Override
protected void appendCachedData()
{
}
@Override
protected boolean cacheInBackground() throws Exception
{
getQuestions();
return true;
}
}
適配器上面的代碼只是表現得像簡單的ListView,cacheInBackground或getPendingView沒有被調用。 FurtherMore我想添加一個headerView也不工作。
我在這裏遺漏了什麼?
好吧,我已經做了工作,感謝上述建議。請問一個小問題。我在cacheInBackground中做getQuestions()。和adapter.setRunInBackground(false);在我getQuestion()異步任務後,我得到修改數組readyListener.onItemsReady(問題);工作正常。但是如果我沒有得到任何東西,我的數組沒有被修改,cacheInBackground會無限重複。該怎麼辦? –
@MuhammadUmar:當你到達數據結尾時,你應該從'cacheInBackground()'返回'false'。 – CommonsWare