Java代码
public class ContentListAdapter extends ArrayAdapter<Content> implements Filterable {
//private static final String TAG = ContentListAdapter.class.getCanonicalName();
private static final LogTracer LOG_TRACER = LogTracer.instance(ContentListAdapter.class);
private Context mContext;
private LayoutInflater mInflater;
private List<Content> mContents;
private List<Content> mContentsFiltered;
private int lastPosition = -1;
private boolean multiselectMode = false;
private Customer mCustomer = null;
private AdapterView.OnItemClickListener mOnItemClickListener;
private AdapterView.OnItemLongClickListener mOnItemLongClickListener;
PatientRatingDAO patientRatingDAO;
int completeVisiblePosition=0;
public int totalScrollCount= 0;
private boolean isFromHomeSearch;
private ListView mListView;
public View helpView;
public ContentListAdapter(Context context, List<Content> contents, ListView listView) {
super(context, R.layout.list_content, contents);
mContext = context;
mContents = contents;
mListView = listView;
mContentsFiltered = contents;
mInflater = LayoutInflater.from(mContext);
mCustomer = new CustomerDAO(context).getCurrentCustomer();
patientRatingDAO = new PatientRatingDAO(getContext());
}
private class ViewHolder {
View listContent;
ImageButton contentThumbnail, contentThumbnailNew,typeofarticle;
LinearLayout contentRightSec;
LinearLayout contentRightSecBottom;
TextView fileSize;
LinearLayout tagsView;
TextView contentPostTime;
TextView contentDescription;
TextView contentSource;
LinearLayout rateCountSec;
LinearLayout rateBarLayout;
TextView rateCount;
TextView likeCount;
TextView likeText;
ImageView likeImage,likeCountImage,rateCountImage,readtick;
RatingBar ratingBar;
RatingBar disabledRatingBar;
RelativeLayout patienteducation;
//int isLiked;
//int currentUserRateCount;
}
@Override
public View getView(final int position, final View convertView, final ViewGroup parent) {
// assign the view we are converting to a local variable
View v = convertView;
LOG_TRACER.d("parm getView " + position + " " + convertView);
// Calculating Scroll Count
if(getCompleteVisiblePosition() == 0){
if(v != null && mListView != null){
this.setCompleteVisiblePosition(calculateCompletelyVisibleListItems(v));
LOG_TRACER.d("parm completeVisiblePosition" + completeVisiblePosition);
}
}
if(getCompleteVisiblePosition() > 0){
if(position % getCompleteVisiblePosition() == 0){
totalScrollCount++;
LOG_TRACER.d("parm totalScrollCount" + totalScrollCount);
}
}
// first check to see if the view is null. if so, we have to inflate it.
// to inflate it basically means to render, or show, the view.
if (v == null) {
//LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
//v = inflater.inflate(mLayout, null);
v = LayoutInflater.from(mContext).inflate(R.layout.list_content, parent, false);
ViewHolder holder = new ViewHolder();
holder.rateCount = (TextView) v.findViewById(R.id.rateCount);
holder.likeCount = (TextView) v.findViewById(R.id.likeCount);
holder.likeCountImage = (ImageView) v.findViewById(R.id.likeCountImage);
holder.rateCountImage = (ImageView) v.findViewById(R.id.rateCountImage);
holder.likeText = (TextView) v.findViewById(R.id.like_text);
holder.likeImage = (ImageView) v.findViewById(R.id.like_image);
holder.ratingBar = (RatingBar) v.findViewById(R.id.ratingBar);
holder.disabledRatingBar = (RatingBar) v.findViewById(R.id.disabled_rating_bar);
holder.typeofarticle = (ImageButton) v.findViewById(R.id.typeofarticle);
holder.patienteducation = (RelativeLayout) v.findViewById(R.id.patient_education);
v.setTag(holder);
}
final Content content = getItem(position);
final ViewHolder viewHolder = (ViewHolder) v.getTag();
if(viewHolder.listContent != null) {
if(content.getIs_Read() == Constants.INT_FLAG_YES) {
viewHolder.listContent.setBackgroundResource(R.drawable.list_selector_content_grey);
viewHolder.readtick.setVisibility(View.VISIBLE);
} else {
viewHolder.listContent.setBackgroundResource(R.drawable.list_selector_content_white);
viewHolder.readtick.setVisibility(View.GONE);
}
if(viewHolder.contentThumbnailNew != null){
Ion.with(viewHolder.contentThumbnailNew).fitXY().placeholder(R.drawable.imagethumbnail).fitXY().error(R.drawable.imagethumbnail).fitXY().load(
(!TextUtils.isEmpty(content.getDA_Thumbnail_Url()))?content.getDA_Thumbnail_Url().replaceAll(" ","%20") : content.getDA_Thumbnail_Url());
}
if(viewHolder.contentThumbnail != null) {
viewHolder.contentThumbnail.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (SettingsUtils.getDefaultCompanyId(mContext) == content.getCompany_Id() && !isFromHomeSearch) {
if (multiselectMode) {
if (mOnItemClickListener != null)
mOnItemClickListener.onItemClick(null, v, position, position);
} else {
if (mOnItemLongClickListener != null)
mOnItemLongClickListener.onItemLongClick(null, v, position, position);
}
} else {
if (mOnItemClickListener != null)
mOnItemClickListener.onItemClick(null, v, position, position);
}
}
});
viewHolder.contentThumbnailNew.setOnTouchListener(new TouchExtendedClickListener(mContext, new TouchExtendedClickListener.OnItemClickListener() {
@Override
public void onItemClick(View view) {
if (mOnItemClickListener != null) mOnItemClickListener.onItemClick(null, convertView, position, position);
}
}));
viewHolder.contentThumbnailNew.setOnLongClickListener(new View.OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
if (SettingsUtils.getDefaultCompanyId(mContext) == content.getCompany_Id() && !isFromHomeSearch) {
if (multiselectMode) {
if (mOnItemClickListener != null)
mOnItemClickListener.onItemClick(null, v, position, position);
} else {
if (mOnItemLongClickListener != null)
mOnItemLongClickListener.onItemLongClick(null, v, position, position);
}
}
return true;
}
});
}
}
}
//To Set Ratings
if (viewHolder.rateCount != null) {
//Calculate rate count by (totalratigs/numberofusersrated)
if(content.getTotalRatings() == 0 || content.getTotalRatedCount()==0){
viewHolder.rateCount.setText("0");
}else if(content.getTotalRatedCount() != 0){
viewHolder.rateCount.setText(String.valueOf(Math.round(content.getTotalRatings()/content.getTotalRatedCount())));
}
}
//To Set Likes
if (viewHolder.likeCount != null) {
viewHolder.likeCount.setText(String.valueOf(content.getLikes()));
}
//if viewHolder.isLiked == 0 then user not yet liked else if viewHolder.isLiked == 1 the user liked
//viewHolder.isLiked = content.getIsLiked();
//viewHolder.currentUserRateCount = content.getCurrentUserRateCount();
//Add Like Listeners
if (viewHolder.likeText != null && viewHolder.likeImage != null) {
if(content.getIsLiked() == 0){
//Set liked image and text
viewHolder.likeText.setText("Like");
viewHolder.likeImage.setImageResource(R.drawable.ic_like_grey_24dp);
viewHolder.likeCountImage.setImageResource(R.drawable.ic_like_grey_24dp);
}else{
//Set liked image and text
//viewHolder.likeText.setText(mContext.getResources().getString(R.string.content_liked));
viewHolder.likeImage.setImageResource(R.drawable.ic_like_pink_24dp);
viewHolder.likeCountImage.setImageResource(R.drawable.ic_like_pink_24dp);
}
viewHolder.likeText.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (content.getIsLiked() == 0) {
content.setIsLiked(1);
//To insert/update user likes to local database
PatientRating patientRating = patientRatingDAO.getByDACodeAndType(content.getDA_Code(),content.getContent_Type());
if(patientRating != null){
patientRating.setIsLiked(content.getIsLiked());
patientRatingDAO.update(patientRating);
}else{
patientRating = new PatientRating();
patientRating.setIsLiked(1);
patientRating.setContent_Type(content.getContent_Type());
patientRating.setDA_Code(content.getDA_Code());
patientRatingDAO.insert(patientRating);
}
//viewHolder.likeText.setText(mContext.getResources().getString(R.string.content_liked));
viewHolder.likeImage.setImageResource(R.drawable.ic_like_pink_24dp);
viewHolder.likeCountImage.setImageResource(R.drawable.ic_like_pink_24dp);
//Increase like counts
int likes = 1 + Integer.parseInt(viewHolder.likeCount.getText().toString());
viewHolder.likeCount.setText(String.valueOf(likes));
viewHolder.rateBarLayout.setVisibility(View.VISIBLE);
Animation animation = AnimationUtils.loadAnimation(mContext, R.anim.like_animation);
viewHolder.likeImage.startAnimation(animation);
//Toast.makeText(mContext, "Liked", Toast.LENGTH_SHORT).show();
return v;
}
@Override
public int getCount() {
return mContentsFiltered.size();
}
@Override
public Content getItem(int position) {
return mContentsFiltered.get(position);
}
public Filter getFilter(FilterOption filterOption) {
return getFilter();
}
@Override
public Filter getFilter() {
return new Filter() {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
String filterString = constraint.toString().toLowerCase().trim();
FilterResults results = new FilterResults();
final List<Content> list = mContents;
int count = list.size() - 1;
List<Content> nlist = new ArrayList<Content>(list.size());
Content filterableContent;
for (int i = 0; i <= count; i++) {
filterableContent = list.get(i);
if(filterableContent.getDA_Name().toLowerCase().contains(filterString)) {
nlist.add(filterableContent);
} else if (!TextUtils.isEmpty(filterableContent.getTags())
&& filterableContent.getTags().toLowerCase().contains(filterString)) {
nlist.add(filterableContent);
}else if (!TextUtils.isEmpty(filterableContent.getCompany_Name())
&& filterableContent.getCompany_Name().toLowerCase().contains(filterString)) {
nlist.add(filterableContent);
}
}
/*List<Integer> companyIds = StaticVariableUtils.getFilterOption().getFilterCompanyIds();
for (int i = 0; i < count; i++) {
filterableContent = list.get(i);
if(filterableContent.getDA_Name().toLowerCase().contains(filterString)) {
// if company ids are selected, check if
// the filtered content has slected company id
if(companyIds != null && companyIds.size() >= 1) {
if(companyIds.indexOf(filterableContent.getCompany_Id()) >= 0) {
nlist.add(filterableContent);
}
} else {
nlist.add(filterableContent);
}
}
}
List<Content> tmpList = new ArrayList<>(nlist.size());
if(nlist != null) {
// sort by datetime
Collections.sort(nlist, new Comparator<Content>() {
@Override
public int compare(Content lhs, Content rhs) {
if(StaticVariableUtils.getFilterOption().getSortingOrder() == R.string.sortingOrderLatest) {
return (lhs.getUploaded_Date().getTime()>rhs.getUploaded_Date().getTime()
? -1 : (lhs.getUploaded_Date().getTime()==rhs.getUploaded_Date().getTime() ? 0 : 1));
} else {
return (lhs.getUploaded_Date().getTime()<rhs.getUploaded_Date().getTime()
? -1 : (lhs.getUploaded_Date().getTime()==rhs.getUploaded_Date().getTime() ? 0 : 1));
}
}
});
}
FilterOption filterOption = StaticVariableUtils.getFilterOption();
if(filterOption.getShowByDate() == R.string.showByDateToday) {
nlist = filterByToday(nlist);
} else if(filterOption.getShowByDate() == R.string.showByDateLastWeek) {
nlist = filterByLastWeek(nlist);
} else if(filterOption.getShowByDate() == R.string.showByDateTwoWeeks) {
nlist = filterByTwoWeeks(nlist);
} else if(filterOption.getShowByDate() == R.string.showByDateThreeWeeks) {
nlist = filterByThreeWeeks(nlist);
} else if(filterOption.getShowByDate() == R.string.showByDateLastMonth) {
nlist = filterByLastMonth(nlist);
} else if(filterOption.getShowByDate() == R.string.showByDateOlder) {
nlist = filterByOlder(nlist);
}
if(filterOption.getShowByStatus() != R.string.showByStatusAll) {
nlist = getReadOrUnread(nlist, filterOption.getShowByStatus());
}*/
results.values = nlist;
results.count = nlist.size();
return results;
}
@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
mContentsFiltered = (ArrayList<Content>) results.values;
notifyDataSetChanged();
}
};
}
我的xml文件
<ListView
android:id="@+id/lvContent"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#e2e2e2"
android:clipToPadding="false"
android:divider="@null"
android:dividerHeight="0dp"
android:fadingEdge="none"
android:smoothScrollbar="true"
android:fitsSystemWindows="true"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
android:scrollbarStyle="insideOverlay">
</ListView>
getView方法在位置0多次调用 所以花了更多的时间加载这个Activity.This代码我正在使用....我不知道为什么getview（）调用多次。我的工作代码在上面...如何解决这个问题
答案 0 :(得分：0)
I Resolve this issuee...... Because i added list from three different methods and also set notifydatasetchange. so my get view called more than one time....