I have customized the code of EndlessAdapter in my app but one mistake done by me as this Endless Adapter always download data in the background instead it should download the same after user scroll downs the list and I unable to find the same mistake in our project. Due to this mistake my app sometimes returns OutOfMemoryException which is not acceptable.
Please suggest me any solution regarding the same.
Code: *MyEndlessAdapter:*
class DemoAdapterCat extends EndlessAdapter {
private RotateAnimation rotate=null;
ArrayList<String> tempListNamesCat = new ArrayList<String>();
ArrayList<String> tempListImagesCat = new ArrayList<String>();
ArrayList<String> tempListYearCat1 = new ArrayList<String>();
ArrayList<String> tempListYearCat2 = new ArrayList<String>();
ArrayList<String> tempListmpgCat1 = new ArrayList<String>();
ArrayList<String> tempListmpgCat2 = new ArrayList<String>();
ArrayList<String> tempListpriceCat1 = new ArrayList<String>();
ArrayList<String> tempListpriceCat2 = new ArrayList<String>();
ArrayList<String> tempListRatingCat1 = new ArrayList<String>();
ArrayList<String> tempListRatingCat2 = new ArrayList<String>();
DemoAdapterCat() {
super(new CategoryListLazyAdapter(ResearchList.this, countriesSubCat, imagesSubCat, YearSubCat1,YearSubCat2, mpgSubCat1,mpgSubCat2, priceSubCat1,priceSubCat2, ratingSubCat1, ratingSubCat2));
Utility util = new Utility();
util.setListViewHeightBasedOnChildren(lvCategory);
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);
}
/*
@Override
public int getCount()
{
//return brandList.getDisplayNames().size();
return countriesSubCat.size();
}*/
@Override
protected View getPendingView(ViewGroup parent) {
row=getLayoutInflater().inflate(R.layout.categorylist, null);
child=row.findViewById(R.id.tv_CategoryItem_Name);
child.setVisibility(View.GONE);
child = row.findViewById(R.id.tv_CategoryItem_MPG1);
child.setVisibility(View.GONE);
child = row.findViewById(R.id.tv_CategoryItem_MPG2);
child.setVisibility(View.GONE);
child = row.findViewById(R.id.tv_CategoryItem_Price1);
child.setVisibility(View.GONE);
child = row.findViewById(R.id.tv_CategoryItem_Price2);
child.setVisibility(View.GONE);
child = row.findViewById(R.id.tv_CategoryItem_Rating1);
child.setVisibility(View.GONE);
child = row.findViewById(R.id.tv_CategoryItem_Rating2);
child.setVisibility(View.GONE);
child = row.findViewById(R.id.tv_CategoryItem_Year1);
child.setVisibility(View.GONE);
child = row.findViewById(R.id.tv_CategoryItem_Year2);
child.setVisibility(View.GONE);
/*child = row.findViewById(R.id.img_CategoryItem);
child.setVisibility(View.GONE);
child = row.findViewById(R.id.img_CategoryItem_Arrow);
child.setVisibility(View.GONE);*/
/*child = row.findViewById(R.id.linear_main_MPG);
child.setVisibility(View.GONE);*/
child=row.findViewById(R.id.throbber);
child.setVisibility(View.VISIBLE);
child.startAnimation(rotate);
return(row);
}
@Override
protected boolean cacheInBackground() {
SystemClock.sleep(10000);
tempListNamesCat.clear();
tempListImagesCat.clear();
tempListmpgCat1.clear();
tempListmpgCat2.clear();
tempListpriceCat1.clear();
tempListpriceCat2.clear();
tempListYearCat1.clear();
tempListYearCat2.clear();
tempListRatingCat1.clear();
tempListRatingCat2.clear();
int lastOffset = getLastOffset();
if(lastOffset < LIST_SIZE){
int limit = lastOffset + BATCH_SIZE;
for(int i=(lastOffset+1); (i<=limit && i<LIST_SIZE); i++){
tempListNamesCat.add(coll.getDisplayNames().get(i));
tempListImagesCat.add(coll.getImages().get(i));
tempListmpgCat1.add(coll.getMpg().get(i));
tempListmpgCat2.add(coll.getMpg().get(i+1));
tempListpriceCat1.add(coll.getPrice().get(i));
tempListpriceCat2.add(coll.getPrice().get(i+1));
tempListRatingCat1.add(coll.getRating().get(i));
tempListRatingCat2.add(coll.getRating().get(i+1));
tempListYearCat1.add(coll.getYears().get(i));
tempListYearCat2.add(coll.getYears().get(i+1));
}
setLastOffset(limit);
if(limit<LIST_SIZE){
//return true;
return(getWrappedAdapter().getCount()<coll.getDisplayNames().size());
} else {
return false;
}
} else {
return false;
}
}
@Override
protected void appendCachedData() {
@SuppressWarnings("unchecked")
//Activity activity = this;
//ArrayAdapter<String> arrAdapterNew = (ArrayAdapter<String>)getWrappedAdapter();
CategoryListLazyAdapter arrAdapterNewCategory = (CategoryListLazyAdapter)getWrappedAdapter();
//int listLen = tempList.size();
// int listLen = tempListNames.size();
countriesSubCat.addAll(tempListNamesCat);
imagesSubCat.addAll(tempListImagesCat);
mpgSubCat1.addAll(tempListmpgCat1);
mpgSubCat2.addAll(tempListmpgCat2);
priceSubCat1.addAll(tempListpriceCat1);
priceSubCat2.addAll(tempListpriceCat2);
ratingSubCat1.addAll(tempListRatingCat1);
ratingSubCat2.addAll(tempListRatingCat2);
YearSubCat1.addAll(tempListYearCat1);
YearSubCat2.addAll(tempListYearCat2);
arrAdapterNewCategory.notifyDataSetChanged();
Utility util = new Utility();
util.setListViewHeightBasedOnChildren(lvCategory);
/* for(int i=0; i<listLen; i++){
// arrAdapterNew.add(tempList.get(i));
}*/
}
}
Set Demoadapter to the list:
public void setValuesInCategoryChildSortByAZ(String url,final String filter, final String from, final String to)
{
if(isOnline())
{
final ProgressDialog dialog = ProgressDialog.show(
ResearchList.this, "Research List ",
"Please wait... ", true);
final Handler handler = new Handler() {
public void handleMessage(Message msg) {
// System.out.println("The id after Save:"+id.get(0).toString());
// catagory.addAll(keyword_vector1);
linear_Category_Child.setVisibility(View.GONE);
linear_Category_Child_Child.setVisibility(View.VISIBLE);
//tv_Child_Header.setText("Volvo");
/*adapter = new CategoryListLazyAdapter(
ResearchList.this);
lvCategory.setAdapter(adapter);*/
demoAdapterCat.notifyDataSetChanged();
Utility util = new Utility();
util.setListViewHeightBasedOnChildren(lvCategory);
dialog.dismiss();
}
};
final Thread checkUpdate = new Thread() {
public void run() {
try {
String sortEncode = URLEncoder.encode("alpha");
String filterEncode = URLEncoder.encode(filter);
String clientEncode = URLEncoder.encode("10030812");
String fromEncode = URLEncoder.encode(from);
String toEncode = URLEncoder.encode(to);
String catUrl = "/v1/vehicles/get-make-models.json?sort="+sortEncode+"&filter="+filterEncode+"&client-id="+clientEncode+"&from="+fromEncode;
genSig = new GetSignature(catUrl, "acura");
try {
signature = genSig.getUrlFromString();
} catch (InvalidKeyException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (NoSuchAlgorithmException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
// jsonString =
// getJsonSring("http://api.highgearmedia.com/v1/vehicles/get-models.json?make=acura&client-id=10030812&signature=LWQbdAlJVxlXZ1VO2mfqAA==");
//String signatureEncode = URLEncoder.encode(signature);
String urlEncode = URLEncoder.encode(catUrl+"&signature="+signature);
jsonString = getJsonSring("http://apibeta.highgearmedia.com"+catUrl+"&signature="+signature);
System.out.println("The json category:===>"+jsonString);
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (URISyntaxException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
JsonParse json = new JsonParse(jsonString);
json.parseCat();
handler.sendEmptyMessage(0);
}
};
checkUpdate.start();
}else
{
AlertDialog.Builder builder = new Builder(ResearchList.this);
builder.setTitle("Attention!");
builder.setMessage("Network Connection unavailable.");
builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
}
});
builder.create().show();
}
}
Thanks in advance.
