I have a button inside my grid view, I want to send data to another activity when the button (which is inside grid view) is clicked

i googled and found that custom adapter can solve this, but unable to implement in this code, can any one help me out.

All my grid view is worked in this fragment.

public class HomeFragment extends Fragment {

private HomeViewModel homeViewModel;
private GridView gridView;
String canWaterName[] = {"Bisleri","Aqua Gold","Kinley"};
String canWaterPrice[] = {"Rs 90","Rs 45","Rs 110"};
int canWaterImage[] = {R.drawable.canwater,R.drawable.canwater,R.drawable.canwater};
public View onCreateView(@NonNull LayoutInflater inflater, final ViewGroup container, Bundle savedInstanceState) {
    homeViewModel = ViewModelProviders.of(this).get(HomeViewModel.class);
    View root = inflater.inflate(R.layout.fragment_home, container, false);
    gridView = root.findViewById(R.id.gridview);
    CustomAdapter customAdapter = new CustomAdapter();
    gridView.setAdapter(customAdapter);
    gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
            Intent intent = new Intent(getActivity(), OrderSummary.class);
            intent.putExtra("name",canWaterName[i]);
            intent.putExtra("price",canWaterPrice[i]);
            intent.putExtra("image",canWaterImage[i]);
            startActivity(intent);
        }
    });
    return root;
}
public class CustomAdapter extends BaseAdapter {
    @Override
    public int getCount() {
        return canWaterImage.length;
    }

    @Override
    public Object getItem(int position) {
        return null;
    }

    @Override
    public long getItemId(int position) {
        return 0;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View view1 = getLayoutInflater().inflate(R.layout.row_data,null);
        //getting view in row_data
        TextView name = view1.findViewById(R.id.canwaterName);
        TextView price = view1.findViewById(R.id.canwaterPrice);
        ImageView image = view1.findViewById(R.id.images);
        Button buy = view1.findViewById(R.id.buyButton);
        buy.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

            }
        });
        name.setText(canWaterName[position]);
        price.setText(canWaterPrice[position]);
        image.setImageResource(canWaterImage[position]);
        return view1;
    }
   }
  }

fragment_Home.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<GridView
    android:id="@+id/gridview"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/gridBackground"
    android:paddingLeft="10dp"
    android:paddingRight="10dp"
    android:paddingTop="20dp"
    android:paddingBottom="20dp"
    android:horizontalSpacing="10dp"
    android:verticalSpacing="15dp"
    android:clickable="true"
    android:numColumns="2"
    app:layout_constraintBottom_toBottomOf="parent"></GridView>
 </androidx.constraintlayout.widget.ConstraintLayout>

This is my grid view template.

row_data.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    android:id="@+id/gridviewdata"
    android:layout_width="wrap_content"
    android:background="#fff"
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:elevation="5dp"
    android:clickable="false"
    android:focusable="false"
    android:focusableInTouchMode="false"
    android:layout_height="wrap_content">

    <TextView
        android:id="@+id/canwaterName"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Bisleri"
        android:textSize="14dp"
        android:textStyle="normal"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.456"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/images"
        android:layout_marginTop="5dp" />

<TextView
    android:id="@+id/canwaterPrice"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginTop="5dp"
    android:text="Rs 90"
    android:textSize="14dp"
    android:textStyle="bold"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintHorizontal_bias="0.463"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toBottomOf="@+id/canwaterName" />

<ImageView
    android:id="@+id/images"
    android:layout_width="140dp"
    android:layout_height="140dp"
    android:src="@drawable/canwater"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintHorizontal_bias="0.46"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent" />

<Button
    android:id="@+id/buyButton"
    android:layout_width="0dp"
    android:layout_height="0dp"
    android:layout_marginTop="10dp"
    android:layout_marginBottom="10dp"
    android:background="@color/colorPrimary"
    android:text="BUY"
    android:textColor="@color/white"
    android:textSize="14sp"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintHeight_percent="0.14"
    app:layout_constraintHorizontal_bias="0.46"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toBottomOf="@+id/canwaterPrice"
    app:layout_constraintVertical_bias="0.0"
    app:layout_constraintWidth_percent="0.45" />

</androidx.constraintlayout.widget.ConstraintLayout>

I want to send data to this activity on button click which is present inside a grid view.

activity_ordered_summary.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".OrderSummary">

<ImageView
    android:id="@+id/canWaterOrder"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent"
    app:srcCompat="@drawable/canwater" />

<TextView
    android:id="@+id/canWaterNameOrder"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginTop="50dp"
    android:text="Bisleri"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toBottomOf="@+id/canWaterOrder" />

<TextView
    android:id="@+id/canWaterPriceOrder"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginTop="50dp"
    android:layout_marginBottom="120dp"
    android:text="Rs 90"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintHorizontal_bias="0.485"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toBottomOf="@+id/canWaterNameOrder"
    app:layout_constraintVertical_bias="0.29000002" />
</androidx.constraintlayout.widget.ConstraintLayout>

OrderedSummary.java

public class OrderSummary extends AppCompatActivity {
TextView canWaterName,canWaterPrice;
ImageView image;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_order_summary);
    canWaterName = findViewById(R.id.canWaterNameOrder);
    canWaterPrice = findViewById(R.id.canWaterPriceOrder);
    image = findViewById(R.id.canWaterOrder);
    Intent intent = getIntent();
    canWaterName.setText(intent.getStringExtra("name"));
    canWaterPrice.setText(intent.getStringExtra("price"));
    image.setImageResource(intent.getIntExtra("image",0));
}

Solution

gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) 
        {
            if(view.getId() == R.id.buyButton) {
                Intent intent = new Intent(getActivity(), OrderSummary.class);
                intent.putExtra("name", canWaterName[i]);
                intent.putExtra("price", canWaterPrice[i]);
                intent.putExtra("image", canWaterImage[i]);
                startActivity(intent);
            }
        }
    });

inside custom adapter

@Override
    public View getView(final int position, View convertView, final ViewGroup parent) {
        View view1 = getLayoutInflater().inflate(R.layout.row_data,null);
        //getting view in row_data
        final TextView name = view1.findViewById(R.id.canwaterName);
        final TextView price = view1.findViewById(R.id.canwaterPrice);
        final ImageView image = view1.findViewById(R.id.images);
        name.setText(canWaterName[position]);
        price.setText(canWaterPrice[position]);
        image.setImageResource(canWaterImage[position]);
        final Button buy = view1.findViewById(R.id.buyButton);
        buy.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                ((GridView)parent).performItemClick(v,position,0);
            }
        });
        return view1;
    }