how to smooth scroll listview like ios in android? - android-listview

Question

I am use data from web using XML parser and setting data using custom adapter for this use asyncTask .
My problem is that some devices like Samsang duos,gallaxy work perfectly but on micromax devices it will not work properly.
My adapter is
public class HallBookingAdapter extends ArrayAdapter<MyHall> {
private Context context;
private ArrayList<MCCIAHall> halls;
private int resource;
MyHall objHall;
public int count;
View view;
public static Boolean isScrollingHalls=true;
LayoutInflater inflater;
static class HallBookingHolder
{
public TextView txtTitle,txtLocation,txtCapacity,txtCapacityTitle;
public ImageView imgHall;
public LinearLayout hallBookingLayout;
}
public HallBookingAdapter(Context context, int resource, ArrayList<MyHall> halls) {
super(context, resource, halls);
this.context=context;
this.halls=halls;
this.resource=resource;
inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
#Override
public int getCount() {
count=halls.size();
return halls.size();
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
view=convertView;
objHall=halls.get(position);
HallBookingHolder holder=new HallBookingHolder();
if (convertView==null) {
view = inflater.inflate(resource, null);
holder.txtTitle=(TextView)view.findViewById(R.id.txtListHallTitle);
holder.txtLocation=(TextView)view.findViewById(R.id.txtListHallLocation);
holder.txtCapacity=(TextView)view.findViewById(R.id.txtListHallCapacity);
holder.txtCapacityTitle=(TextView)view.findViewById(R.id.txtListHallCapacityHeadding);
holder.imgHall=(ImageView)view.findViewById(R.id.imgListHall);
view.setTag(holder);
}
else
{
holder = (HallBookingHolder)convertView.getTag();
}
//Creating the Font to the text
Typeface tfLight = Typeface.createFromAsset(context.getAssets(),"OpenSans-Light.ttf");
Typeface tfRegular = Typeface.createFromAsset(context.getAssets(),"OpenSans-Regular.ttf");
Typeface tfsemiBold = Typeface.createFromAsset(context.getAssets(),"OpenSans-Semibold.ttf");
//Setting the font
holder.txtTitle.setTypeface(tfRegular);
holder.txtLocation.setTypeface(tfLight);
holder.txtCapacity.setTypeface(tfsemiBold);
holder.txtCapacityTitle.setTypeface(tfLight);
//Setting data to textview and image
holder.txtTitle.setText(objHall.hallName);
holder.txtLocation.setText(objHall.location);
holder.txtCapacity.setText(objHall.capacity);
//Using Guild Library Image Load using image web url
String imgurl=objHall.getImageUrl();
Glide.load(imgurl).centerCrop().into(holder.imgHall);
view.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent=new Intent(context, HallDetailsActivity.class);
intent.putExtra("position", position);
context.startActivity(intent);
}
});
return view;
}
}

Answer 1

read it listview smooth-scrolling
Using a background thread ("worker thread") removes strain from the
main thread so it can focus on drawing the UI. In many cases, using
AsyncTask provides a simple way to perform your work outside the main
thread. AsyncTask automatically queues up all the execute() requests
and performs them serially. This behavior is global to a particular
process and means you don’t need to worry about creating your own
thread pool.
check this too http://www.itworld.com/development/380008/how-make-smooth-scrolling-listviews-android

Answer 2

Put all your font styles in the if (convertView==null) {} block to set them only once. Now you are setting them every time a new row is created.

Answer 3

Here is a list of quick tips to help you.
Reduce the number of conditions used in the getView of your adapter.
Check and reduce the number of garbage collection warnings that you get in the logs
If you're loading images while scrolling, get rid of them.
Set scrollingCache and animateCache to false (more on this later)
Simplify the hierarchy of the list view row layout
Use the view holder pattern
Here is a link to help you implement these tips. Link