我在我的应用程序中使用listview，因为如果我将滚动listview更多，那么两次应用程序正在重新启动。如何修复它。
这是我的适配器代码：
public class ExpertQAListAdapter extends BaseAdapter {
static class ViewHolder {
public TextView mQuestionTextView;
public TextView mUserNameTextView;
public TextView mQuestionDateTime;
public TextView mAnswerTextView;
public TextView mExpertNameTextView;
public TextView mAnswerDateTime;
public ImageView mExpertImageView;
public ImageView mQuestionaireImageView;
public ImageView mHelpfulImageView;
public ImageView mNonHelpfulImageView;
public TextView mHelpfulTextView;
public RelativeLayout mRelativelayoutForImageDateAndTime;
public String mImageUrl;
}
private LayoutInflater mInflater;
private IWDObjectList mQAItemList;
private ExpertQAListController mExpertQAListController;
private Context mContext;
public ExpertQAListAdapter(Context context, LayoutInflater inflater,
ExpertQAListController expertQAListController) {
mInflater = inflater;
mExpertQAListController = expertQAListController;
mContext = context;
}
public void updateDataSet(IWDObjectList itemList) {
mQAItemList = itemList;
notifyDataSetChanged();
}
@Override
public int getCount() {
return mQAItemList != null ? mQAItemList.Count() : 0;
}
@Override
public AskAnExpertDTO getItem(int position) {
return (AskAnExpertDTO) mQAItemList.GetItem(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
ViewHolder viewHolder = null;
if (convertView == null) {
viewHolder = new ViewHolder();
convertView = mInflater.inflate(R.layout.askanexpert_listitem_view_v25, null);
View userBoxView = convertView.findViewById(R.id.askanexpert_relativelayout_for_userbox);
viewHolder.mQuestionTextView = (TextView) userBoxView.findViewById(
R.id.askanexpert_textview_for_content);
viewHolder.mUserNameTextView = (TextView) userBoxView.findViewById(
R.id.askanexpert_textview_for_username);
viewHolder.mQuestionDateTime = (TextView) userBoxView.findViewById(
R.id.askanexpert_textview_for_date);
viewHolder.mQuestionaireImageView = (ImageView) userBoxView.findViewById(
R.id.askanexpert_imageview_for_userpic);
View expertBoxView = convertView.findViewById(
R.id.askanexpert_relativelayout_for_expertbox);
viewHolder.mRelativelayoutForImageDateAndTime=(RelativeLayout)expertBoxView.findViewById(R.id.askanexpert_relativelayout_for_image_date_and_time);
viewHolder.mAnswerTextView = (TextView) expertBoxView.findViewById(
R.id.askanexpert_textview_for_content);
// To make hyper links clickable
viewHolder.mAnswerTextView.setMovementMethod(LinkMovementMethod.getInstance());
viewHolder.mExpertNameTextView = (TextView) expertBoxView.findViewById(
R.id.askanexpert_textview_for_username);
viewHolder.mAnswerDateTime = (TextView) expertBoxView.findViewById(
R.id.askanexpert_textview_for_date);
viewHolder.mExpertImageView = (ImageView) expertBoxView.findViewById(
R.id.askanexpert_imageview_for_userpic);
viewHolder.mHelpfulImageView = (ImageView) expertBoxView.findViewById(
R.id.askanexpert_imageview_for_helpful);
viewHolder.mNonHelpfulImageView = (ImageView) expertBoxView.findViewById(
R.id.askanexpert_imageview_for_nothelpful);
viewHolder.mHelpfulTextView = (TextView) expertBoxView.findViewById(R.id.askanexpert_textview_for_helpful);
convertView.setTag(viewHolder);
}
else {
viewHolder = (ViewHolder) convertView.getTag();
}
viewHolder.mHelpfulImageView.setSelected(false);
viewHolder.mNonHelpfulImageView.setSelected(false);
viewHolder.mHelpfulImageView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
mExpertQAListController.OnHelpfulIconClick(position);
}
});
viewHolder.mNonHelpfulImageView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
mExpertQAListController.OnNonHelpfulIconClick(position);
}
});
loadQuestionAndAnswer(viewHolder, getItem(position));
if (position == mQAItemList.Count() - 3) {
mExpertQAListController.OnListItemScrollEnd();
}
return convertView;
}
private void loadQuestionAndAnswer(final ViewHolder vh, final AskAnExpertDTO dto) {
IDateTime answerDateTime = null;
IMobilePlatformFactory mpf = MobilePlatformFactoryLocator.GetMobilePlatformFactory();
IFormatDataType formatDataType = MobilePlatformFactoryLocator.GetMobilePlatformFactory()
.CreateFormatDataType();
IDateTime questionDateTime = mpf.CreateDateTime(dto.QuestionDateTimeInMillis);
String questionTime = formatDataType.FormatDateTime(questionDateTime,
StringResource.DATE_MMM_DD_YYYY, null, 0);
vh.mQuestionTextView.setText(dto.Question);
vh.mUserNameTextView.setText(dto.QuestionerName);
vh.mQuestionDateTime.setText(questionTime);
if (dto.Status == QAStatusRequestDTO.STATUS_QA_USEFUL) {
vh.mHelpfulImageView.setSelected(true);
}
if (dto.Status == QAStatusRequestDTO.STATUS_QA_UNUSEFUL) {
vh.mNonHelpfulImageView.setSelected(true);
}
if (dto.Status == QAStatusRequestDTO.STATUS_QA_DEFAULT) {
vh.mNonHelpfulImageView.setSelected(false);
vh.mHelpfulImageView.setSelected(false);
}
String mobileSKey = DataAccessObjectFactoryLocator.getDataAccessObjectFactory()
.getSecurityInformationLookUpDAO().GetMobileSKey();
PatientLookUpDAO patientDao = DataAccessObjectFactoryLocator.getDataAccessObjectFactory()
.getPatientLookUpDAO();
PatientLookUpDTO patientDto = patientDao.Read(mobileSKey, true);
if (dto.QuestionerId == patientDto.PatientId && patientDto.Base64EncodedProfilePicture!=null) {
byte[] profilePicData = formatDataType.DecodeBase64EncodedString(patientDto.Base64EncodedProfilePicture);
Bitmap bitmap = BitmapFactory.decodeByteArray(profilePicData, 0, profilePicData.length);
vh.mQuestionaireImageView.setAdjustViewBounds(true);
vh.mQuestionaireImageView.setImageBitmap(bitmap);
vh.mQuestionaireImageView.setScaleType(ImageView.ScaleType.FIT_XY);
}
else {
vh.mQuestionaireImageView.setImageDrawable(mContext.getResources().getDrawable(
R.drawable.ask_an_expert_profile_pic_male_icon_v25));
}
if (dto.AnswerDateTimeInMillis != 0) {
answerDateTime = mpf.CreateDateTime(dto.AnswerDateTimeInMillis);
}
if (answerDateTime != null) {
if (dto.ExpertId != 0) {
String imageUrl = MobilePlatformFactoryLocator.GetMobilePlatformFactory().GetPortalURL() + "/Service/api/AskAnExpert/GetExpertImage/" + dto.ExpertId;
ImageLoader.loadWithAuth(mContext, vh.mExpertImageView, imageUrl, null);
}
String answerTime = formatDataType.FormatDateTime(answerDateTime, StringResource.DATE_MMM_DD_YYYY, null, 0);
vh.mExpertNameTextView.setText(dto.ExpertName);
vh.mAnswerDateTime.setText(answerTime);
}
else {
vh.mExpertNameTextView.setVisibility(View.GONE);
vh.mAnswerDateTime.setVisibility(View.GONE);
vh.mExpertImageView.setVisibility(View.GONE);
}
if (dto.Answer.equalsIgnoreCase(mContext.getResources().getString(R.string.ExpertQAList_yet_to_be_answered_LBL))){
vh.mNonHelpfulImageView.setVisibility(View.GONE);
vh.mHelpfulImageView.setVisibility(View.GONE);
vh.mHelpfulTextView.setVisibility(View.GONE);
}else {
vh.mNonHelpfulImageView.setVisibility(View.VISIBLE);
vh.mHelpfulImageView.setVisibility(View.VISIBLE);
vh.mHelpfulTextView.setVisibility(View.VISIBLE);
}
vh.mAnswerTextView.setText(Html.fromHtml(dto.Answer));
vh.mRelativelayoutForImageDateAndTime.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent i=new Intent(mContext,ExpertDescriptionActivity.class);
i.putExtra("ask an expert object",dto);
mContext.startActivity(i);
}
});
}
}
这是我的imageLoader类：
public final class ImageLoader {
public static void load(Context context, ImageView view, String url) {
load(context, view, url, null);
}
public static void load(Context context, ImageView view, String url, Callback callback) {
if (TextUtils.isEmpty(url)) {
return;
}
Picasso.with(context)
.load(url)
.fit()
.skipMemoryCache()
.into(view, callback);
}
public static void loadWithAuth(Context context, ImageView view, String url, Callback callback) {
if (TextUtils.isEmpty(url)) {
return;
}
OkHttpClient client = new OkHttpClient.Builder()
.addInterceptor(new Interceptor() {
@Override
public Response intercept(Chain chain) throws IOException {
SecurityInformationLookUpDAO securityInformationLookUpDAO = CommonDataAccessObjectFactoryLocator
.getCommonDataAccessObjectFactory().getSecurityInformationLookUpDAO();
Request newRequest = chain.request().newBuilder()
.addHeader(HttpHeaderDTO.CUSTOM_HEADER_ACCESS_TOKEN, securityInformationLookUpDAO.ReadAccessToken())
.addHeader(HttpHeaderDTO.CUSTOM_HEADER_CSRF_TOKEN, securityInformationLookUpDAO.ReadCSRFToken())
.build();
return chain.proceed(newRequest);
}
})
.build();
Picasso picasso = new Picasso.Builder(context)
.downloader(new OkHttp3Downloader(client))
.build();
picasso.load(url).into(view, callback);
}
}
我出现了内存错误。请帮我解决。