Load a fragment on clicking CardView from RecyclerView

Question

I've a RecyclerView and CardView inside it. Now what i want to do is load a simple Fragment on clicking the CardView. I'm not able to do that with FragmentManager or SupportFragmentManager. Please give me some directions.

My RecyclerViewAdapder and ViewHolder are ..

public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.ViewHolder> {
    private String[] eventName;
    private String[] eventBrief;

    public static class ViewHolder extends RecyclerView.ViewHolder {

        public TextView textViewName, textViewBrief;
        public CardView cardView;

        public ViewHolder(View v) {
            super(v);

            textViewName = (TextView)v.findViewById(R.id.textViewName);
            textViewBrief = (TextView)v.findViewById(R.id.textViewBrief);
            final Context context = v.getContext();
            cardView = (CardView)v.findViewById(R.id.card_view);

            cardView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    EventFragment eventFragment = EventFragment.newInstance();
                    // Load and view eventFragment here??
                }
            });
        }
    }

    public RecyclerViewAdapter(String[] eventName, String[] eventBrief) {
        this.eventName = eventName;
        this.eventBrief = eventBrief;

    }

    @Override
    public RecyclerViewAdapter.ViewHolder onCreateViewHolder(ViewGroup parent,
                                                   int viewType) {
        View v = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.my_card_view, parent, false);
        return new ViewHolder(v);
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        holder.textViewName.setText(eventName[position]);
        holder.textViewBrief.setText(eventBrief[position]);
    }

    @Override
    public int getItemCount() {
        return eventName.length;
    }
}

Solution 1

A simple implementation is to add a onClickListener() to the ViewHolder 's itemView in the constructor of the Adapter.

    public MyViewHolder(View view) {
        super(view);

        itemView.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View view){

                AppCompatActivity activity = (AppCompatActivity) view.getContext();
                Fragment myFragment = new MyFragment();
                activity.getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container, myFragment).addToBackStack(null).commit();


            }
        });
    }

Solution 2

I'm not able to do that with FragmentManager or SupportFragmentManager

That's because RecyclerViewAdapter doesn't hold a reference to the FragmentManager. You should communicate to the Activity/Fragment hosting the RecyclerView, that the event occurred and from there you start the fragment. To do so check my answer here

Comments

[sabbibJAVA]

@martiendt @viper what is Fragment myFragment = new MyFragment(); ?

[viper]

MyFragment is the fragment class of the fragment that you want to load @sabbibJAVA

[martiendt]

@sabbibJAVA you can see my implementation here github.com/martiendt/daily-dhamma i used this on github.com/martiendt/daily-dhamma/blob/master/app/src/main/j‌​ava/…