Recyclerview lags on scroll if custom font is used

Question

To set a custom font I have created a CutomTextView by extending TextView but the RecyclerView lags while scrolling when the CutomTextView is used. I have tried using a standard Textview and setting the font in the ViewHolder but the result is the same.

CustomTextView.java

public class CustomTextView extends TextView {

    public CustomTextView(Context context) {
        super(context);
        applyCustomFont(context);
    }

    public CustomTextView(Context context, AttributeSet attrs) {
        super(context, attrs);
        applyCustomFont(context);
    }

    public CustomTextView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        applyCustomFont(context);
    }

    private void applyCustomFont(Context context) {
        setTypeface(Typeface.createFromAsset(context.getAssets(), "fonts/hell.ttf"));
    }
}

Adapter.java

public class DashBoardAdapter extends RecyclerView.Adapter<DashBoardAdapter.ViewHolder> {

private List<PatientList> patientListList;
private Activity activity;

public DashBoardAdapter(List<PatientList> patientListList, Activity activity) {
    this.patientListList = patientListList;
    this.activity = activity;
}

@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View view = LayoutInflater.from(activity).inflate(R.layout.recyclerview_dashboard_row, parent, false);
    return new ViewHolder(view);
}

@Override
public void onBindViewHolder(ViewHolder holder, final int position) {
    final PatientList p = patientListList.get(position);
    if(p.getName() != null)
        holder.username.setText(p.getName());
}

@Override
public int getItemCount() {
    return patientListList.size();
}

class ViewHolder extends RecyclerView.ViewHolder{

    @BindView(R.id.patient_username) TextView username;
    private View itemView;

    public ViewHolder(View itemView) {
        super(itemView);
        this.itemView = itemView;
        ButterKnife.bind(this,itemView);

        // Setting font here when custom textview is not used
    }
}

@Override
public int getItemViewType(int position) {
    return position;
}

what could be the reason for the lag?

Look at this link this might help http://stackoverflow.com/questions/16648190/how-to-set-a-particular-font-for-a-button-text-in-android/16648457#16648457 — Piyush Patel, May 15 '17 at 12:16
you need to cache Typeface. doesn't need to initialize every time you use it — Piyush Patel, May 15 '17 at 12:17

score 2 · Accepted Answer · edited May 23 '17 at 10:31

2

Look at this link this might help How to set a particular font for a button text in android?

You need to cache Typeface doesn't need to initialize every time you use Typeface.

edited May 23 '17 at 10:31

Community

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answered May 17 '17 at 05:38

Piyush Patel

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Recyclerview lags on scroll if custom font is used

1 Answers1