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Passing RecyclerView CardView Clicked Item Data To Activity

由 岁酱吖の 提交于 2019-11-29 04:20:18

create an Interface inside your adapter containing methods. And while implementing your Adapter, those methods will be implemented in your activity and you can perform whatever action you want.

    public class Adapter extends RecyclerView.Adapter<MyRecycleViewHolder> {

    public interface Callbacks {
        public void onButtonClicked(String titleKey);
    }

    private Callbacks mCallbacks;

    public Adapter() {

    }

    @Override
    public MyRecycleViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
        View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.layout_details, null);
        return new MyRecycleViewHolder(v);
    }

    @Override
    public void onBindViewHolder(final MyRecycleViewHolder holder, final int i) {

        holder.ExpandButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (mCallbacks != null) {
                    mCallbacks.onButtonClicked(holder.ProbTitle.getText().toString());
                }
            }
        });

    }


    @Override
    public int getItemCount() {
        return;
    }

    public void setCallbacks(Callbacks callbacks) {
        this.mCallbacks = callbacks;
    }
}

you may try do this on your onItemClick()

Intent i = new Intent(view.getContext(), DetailsActivity.class); i.putExtra("title", yourTitle); i.putExtra("description", yourDescription); view.getContext().startActivity(i);

and when oncreate in your DetailActivity,do this

String title = getIntent().getStringExtra("title"); String description = getIntent().getStringExtra("description");

so you can pass title and description to DetailActivity

Stefan

First of all make your "itemsdata" object to implement Parcelable. You can check it here . In your onItemClick method you pass the object to your Details activity using intent.putExtra("key",listOfDataItems.get(position)); In your DetailsActivity you can get your custom object with getParcelable("key")

All above methods worked, but kinda long, so this one worked for me : 

Cardview cardview;
            cardView = (CardView)itemView.findViewById(R.id.cv);

        cardView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent i = new Intent (view.getContext(), DetailsActivity.class);
                i.putExtra("TitleKey",ProbTitle.getText().toString());
                i.putExtra("DescrKey",ProbDescr.getText().toString());
                view.getContext().startActivity(i);
            }
        });

And in Details.java :

    TextView title;
TextView Descr;
        title = (TextView)findViewById(R.id.details_title);
    Descr = (TextView)findViewById(R.id.details_descr);

    String titleresult = result.getExtras().getString("TitleKey");
    String Descrresult = result.getExtras().getString("DescrKey");

    title.setText(titleresult);
    Descr.setText(Descrresult);

IMO, you implement setOnClickListener inside Adapter of RecyclerView. You can refer to my following sample code, then apply its logic to your code. Hope it helps!

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

    Context mContext;
    List<String> mStringList;

    public MyRVAdapter(Context mContext, List<String> mStringList) {
        this.mContext = mContext;
        this.mStringList = mStringList;
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.cardview, parent, false);
        v.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                TextView textView1 = (TextView) v.findViewById(R.id.textView1);
                TextView textView2 = (TextView) v.findViewById(R.id.textView2);
                Bundle bundle = new Bundle();
                bundle.putString("key1", textView1.getText().toString());
                bundle.putString("key2", textView2.getText().toString());

                passToAnotherActivity(bundle);
            }
        });
        return new ViewHolder(v);
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        // do something...
    }

    @Override
    public int getItemCount() {
        if (mStringList != null) {
            return mStringList.size();
        }
        return 0;
    }

    private void passToAnotherActivity(Bundle bundle) {
        if (mContext == null)
            return;
        if (mContext instanceof MainActivity) {
            MainActivity activity = (MainActivity) mContext;
            activity.passToAnotherActivity(bundle); // this method must be implemented inside `MainActivity`
        }
    }

    public static class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {

        public ViewHolder(View itemView) {
            super(itemView);
            // do something...
        }

        @Override
        public void onClick(View v) {
        }
    }
}
标签
java
android
android-fragments
android-recyclerview
android-cardview
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