Title: Android ListView - ExpandableHeightListView add a limit of 10 records per page
Tags: android-listview;android-adapter;pull-to-refresh;android-adapterview
Question: My listview is found inside a ScrollView. The ListView was extended by ExpandableHeightListView class. When, 20 row items are loaded, the image library freeze the UI until all images are loaded. Then, user can scroll and select an item. To handle this issue, I tried to load every 10 records in the arraylist. Can i do it directly in the ExpandableHeightListView , if so how ?
public class ExpandableHeightListView extends ListView {
boolean expanded = false;
public ExpandableHeightListView(Context context) {
super(context);
public ExpandableHeightListView(Context context, AttributeSet attrs) {
super(context, attrs);
public ExpandableHeightListView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
public boolean isExpanded() {
return expanded;
@Override
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
if (isExpanded()) {
//  int expandSpec = MeasureSpec.makeMeasureSpec(MEASURED_SIZE_MASK, MeasureSpec.AT_MOST);
//super.onMeasure(widthMeasureSpec, heightMeasureSpec);
// Calculate entire height by providing a very large height hint.
// MEASURED_SIZE_MASK represents the largest height possible.
//int expandSpec = MeasureSpec.makeMeasureSpec(MEASURED_SIZE_MASK, MeasureSpec.AT_MOST);
//super.onMeasure(widthMeasureSpec, expandSpec);
// Calculate entire height by providing a very large height hint.
// But do not use the highest 2 bits of this integer; those are
// reserved for the MeasureSpec mode.
int expandSpec = MeasureSpec.makeMeasureSpec(
Integer.MAX_VALUE &gt;&gt; 2, MeasureSpec.AT_MOST);
super.onMeasure(widthMeasureSpec, expandSpec);
ViewGroup.LayoutParams params = getLayoutParams();
params.height = getMeasuredHeight();
} else {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
public void setExpanded(boolean expanded) {
this.expanded = expanded;
The ListView adapter is as follows:
public class ResultatRechercheAdapter extends BaseAdapter {
public static final String IMAGE_CACHE_DIR = "images";
public static final String EXTRA_IMAGE = "extra_image";
public List<MRechercheResult&gt; items;
public final OnClickListener itemButtonClickListener;
public final Context context;
public Activity activity;
public String agenda_date;
public String agenda_from;
public String agenda_to;
public ViewHolder holder;
public int agenda_from_hour=-1;
public int agenda_from_minute=-1;
public int agenda_to_hour;
public int agenda_to_minute;
public String from_am_pm;
public String to_am_pm;
private String monday;
private String tuesday;
private String wednesday;
private String thursday;
private String friday;
private String saturday;
private String sunday;
public ImageFetcher mImageFetcher;
public ResultatRechercheAdapter(Activity activity,Context context, List<MRechercheResult&gt; resultat, OnClickListener itemButtonClickListener) {
this.activity = activity;
this.context = context;
this.items = resultat;
this.itemButtonClickListener = itemButtonClickListener;
//this.mImageFetcher = mImageFetcher;
try {
monday= activity.getResources().getString(R.string.monday);
tuesday= activity.getResources().getString(R.string.tuesday);
wednesday= activity.getResources().getString(R.string.wednesday);
thursday= activity.getResources().getString(R.string.thursday);
friday= activity.getResources().getString(R.string.friday);
saturday= activity.getResources().getString(R.string.saturday);
sunday= activity.getResources().getString(R.string.sunday);
} catch(Exception ex){}
@Override
public int getCount() {
return items.size();//items.size()
@Override
public MRechercheResult getItem(int position) {
return items.get(position);
@Override
public long getItemId(int position) {
return position;
@Override
public int getViewTypeCount() {
return 1;//items.size()
@Override
public int getItemViewType(int position) {
return position;
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = LayoutInflater.from(context).inflate(R.layout.list_item_card, null);
holder = new ViewHolder();
holder.txRowTitle = (TextView) convertView.findViewById(R.id.txRowTitle);
holder.imThumbnail= (RecyclingImageView) convertView.findViewById(R.id.imThumbnail);
holder.itemButton1 = (Button) convertView.findViewById(R.id.list_item_card_close);
holder.itemButton2 = (Button) convertView.findViewById(R.id.list_item_card_button_2);
holder.imCircleLundi= (ImageView) convertView.findViewById(R.id.imCircleLundi);
holder.imCircleMardi= (ImageView) convertView.findViewById(R.id.imCircleMardi);
holder.imCircleMercredi= (ImageView) convertView.findViewById(R.id.imCircleMercredi);
holder.imCircleJeudi= (ImageView) convertView.findViewById(R.id.imCircleJeudi);
holder.imCircleVendredi= (ImageView) convertView.findViewById(R.id.imCircleVendredi);
holder.imCircleSamedi= (ImageView) convertView.findViewById(R.id.imCircleSamedi);
holder.imCircleDimanche= (ImageView) convertView.findViewById(R.id.imCircleDimanche);
holder.rlListRecherche= (RelativeLayout) convertView.findViewById(R.id.rlListRecherche);
holder.llImage= (LinearLayout) convertView.findViewById(R.id.llImage);
holder.rlListClose= (RelativeLayout) convertView.findViewById(R.id.rlListClose);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
boolean no_record  = items.get(position).no_record;
if (no_record){ // listview is empty
holder.llImage.setVisibility(View.GONE);
holder.rlListClose.setVisibility(View.GONE);
holder.rlListRecherche.setVisibility(View.VISIBLE);
} else {
Utils.shortWeek(activity, convertView);
holder.llImage.setVisibility(View.VISIBLE);
holder.rlListClose.setVisibility(View.VISIBLE);
holder.rlListRecherche.setVisibility(View.GONE);
if (itemButtonClickListener != null) {
//holder.itemButton1.setOnClickListener(itemButtonClickListener);
holder.itemButton1.setVisibility(View.GONE);
holder.itemButton2.setOnClickListener(itemButtonClickListener);
}
final String image_url = items.get(position).profil_photo.toString().replace("\\","").replace("hepigo", "helpigo");
String item_title = items.get(position).profil.toString();
if (item_title.equalsIgnoreCase("Julien Perez")){
if (true){
String display_pos = String.valueOf(position);
System.out.println(display_pos);
}
}
//searchRequest(position,image_url);
//if (!TextUtils.isEmpty(image_url))
//  mImageFetcher.loadImage(image_url, holder.imThumbnail);
activity.runOnUiThread(new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
if (TextUtils.isEmpty(items.get(position).profil_photo)) {
//no url
} else {
Picasso.with(activity)
.load(image_url)
.error(android.R.drawable.stat_notify_error)
.transform(transformation)
.placeholder(R.drawable.loading_image_placeholder)
.config(Config.RGB_565)
.into(holder.imThumbnail);
}
}
});
//if (!TextUtils.isEmpty(image_url))
//  new DownloadImageTask(holder.imThumbnail).execute(image_url);
holder.txRowTitle.setText(item_title);
activity.runOnUiThread(new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
List<Agenda&gt; agenda =  items.get(position).agenda;
Utils.displayAgenda(agenda,holder.imCircleLundi,monday);
Utils.displayAgenda(agenda,holder.imCircleMardi,tuesday);
Utils.displayAgenda(agenda,holder.imCircleMercredi,wednesday);
Utils.displayAgenda(agenda,holder.imCircleJeudi,thursday);
Utils.displayAgenda(agenda,holder.imCircleVendredi,friday);
Utils.displayAgenda(agenda,holder.imCircleSamedi,saturday);
Utils.displayAgenda(agenda,holder.imCircleDimanche,sunday);
}
});
}
return convertView;
public static class ViewHolder {
public RelativeLayout rlListClose;
public LinearLayout llImage;
public RelativeLayout rlListRecherche;
public ImageView imCircleSamedi;
public ImageView imCircleDimanche;
public ImageView imCircleVendredi;
public ImageView imCircleJeudi;
public ImageView imCircleMercredi;
public ImageView imCircleMardi;
public ImageView imCircleLundi;
public RecyclingImageView imThumbnail;
public TextView txRowTitle;
public Button itemButton1;
public Button itemButton2;



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