I've created a RecyclerView that gets inflated with an ArrayList of Strings and I want to put extra information in an intent for the next activity to get the information. I can pass the position of the element in the reclyclerview(within the intent), but I also want to send the string value that appears in that element. The layout used by the adapter for the recylcerView has nothing but a TextView for displaying the values in the ArrayList of strings.
The problem is in the Adapter, because I want to be able to put an String as extra information in the intent. And what I have to change is the onItemClick method parameters inside ItemClickListener, but I don't know what to do next.
Here's the Adapter:
Adapter_dishes_rv.java
public class Adapter_dishes_rv extends RecyclerView.Adapter<Adapter_dishes_rv.ViewHolder> {
private List<String> mData;
private LayoutInflater mInflater;
private ItemClickListener mClickListener;
Adapter_dishes_rv(Context context, List<String> data) {
this.mInflater = LayoutInflater.from(context);
this.mData = data;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = mInflater.inflate(R.layout.recyclerview_simple_layout, parent, false);
return new ViewHolder(view);
}
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
String animal = mData.get(position);
holder.myTextView.setText(animal);
}
@Override
public int getItemCount() {
return mData.size();
}
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
TextView myTextView;
ViewHolder(View itemView) {
super(itemView);
myTextView = itemView.findViewById(R.id.nameoftypeofdish);
itemView.setOnClickListener(this);
}
@Override
public void onClick(View view) {
if (mClickListener != null) mClickListener.onItemClick(view, getAdapterPosition());
}
}
String getItem(int id) {
return mData.get(id);
}
void setClickListener(ItemClickListener itemClickListener) {
this.mClickListener = itemClickListener;
}
public interface ItemClickListener {
void onItemClick(View view, int position);
}
}
I think that all I have to change is just the OnItemClick parameters but then what else?
Here's the layout just in case:
recyclerview_simple_layout.xml
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:padding="10dp">
<TextView
android:id="@+id/nameoftypeofdish"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20sp"/>
</LinearLayout>
And then there's the main Activity:
FoodFamilyActivity.java
public class FoodFamilyActivity extends Activity implements Adapter_dishes_rv.ItemClickListener {
Adapter_dishes_rv adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_food_family);
ArrayList<String> dishesOfAFamily = new String[]{"Sopa de pobre", "Sopa de pescado", "Sopa de sobre"}
RecyclerView recyclerView = findViewById(R.id.FamilyDishes);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
adapter = new Adapter_dishes_rv(this, dishesOfAFamily);
adapter.setClickListener(this);
recyclerView.setAdapter(adapter);
}
@Override
public void onItemClick(View view, int position) {
Intent intent = new Intent(FoodFamilyActivity.this, DishActivity.class);
intent.putExtra(DishActivity.EXTRA_DISHNO, (int) position);
startActivity(intent);
}
}
If you need anything else tell me, because I really need help with this problem.
You can add the following function to your adapter
public String getDishForPosition(int position) {
if (mData != null && mData.size() > 0) {
return mData.get(position);
}
return null;
}
You are already getting the concerned position using getAdapterPosition()
. Using the above function you can get the string from the list .
Change your interface to
public interface ItemClickListener {
void onItemClick(View view, int position,String dishes);
}
Now you have the required string in your activity where you can pass it to Intent