we need to ask for permission to use internet assets . (we do so by writing permission code inside manifest app )

TO create a loading icon . Use <ProgressBar "CONTENT**"/>

Article Class me apan ne API me articles array ke saare content store karaye hai .(url,urtToImage,author,title,description,publishedAt)

Methods used in Articles class .->
constructor of class variables .
getter and setter .

NewsModal Class ke andar apan ne status and totalResults var. store kara rhe hai .

Certainly! Here's a brief summary of the topics we discussed:

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1. ViewHolder in RecyclerView

Purpose:

• View Caching: To cache the references to the views of an individual item's layout in a RecyclerView.

• Optimized Access to Views: To efficiently access and manipulate the views of each item in the RecyclerView.

Usage:

public static class ViewHolder extends RecyclerView.ViewHolder {
    TextView categoryName;

    public ViewHolder(@NonNull View itemView) {
        super(itemView);
        categoryName = itemView.findViewById(R.id.categoryName);
    }
}

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2. Usage of holder in RecyclerView Adapter

Steps:

1. ViewHolder Initialization:

   • In onCreateViewHolder, the holder (an instance of ViewHolder) is created and associated with the inflated item layout.

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

2. Bind Data to ViewHolder:

   • In onBindViewHolder, you use holder to access and populate the views of the item with the appropriate data for the item at the given position.

    @Override
    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
        String category = categories.get(position);
        holder.categoryName.setText(category);
    }

Example:

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

    private List<String> categories;

    public CategoryRVAdapter(List<String> categories) {
        this.categories = categories;
    }

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

    @Override
    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
        String category = categories.get(position);
        holder.categoryName.setText(category);
    }

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

    public static class ViewHolder extends RecyclerView.ViewHolder {
        TextView categoryName;

        public ViewHolder(@NonNull View itemView) {
            super(itemView);
            categoryName = itemView.findViewById(R.id.categoryName);
        }
    }
}

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3. notifyDataSetChanged() in Android

Purpose:

• To notify the attached observers (e.g., RecyclerView or ListView) that the underlying data set has changed and any view reflecting the data set should refresh itself.

Usage:

List<String> newCategories = new ArrayList<>();
newCategories.add("New Category 1");
newCategories.add("New Category 2");
newCategories.add("New Category 3");

categories.addAll(newCategories);  // Modify the data set
adapter.notifyDataSetChanged();  // Notify the adapter that the data set has changed

Example with RecyclerView:

public class MainActivity extends AppCompatActivity {

    private RecyclerView recyclerView;
    private CategoryRVAdapter adapter;
    private List<String> categories = new ArrayList<>();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // Initialize RecyclerView
        recyclerView = findViewById(R.id.recyclerView);
        recyclerView.setLayoutManager(new LinearLayoutManager(this));

        // Initialize adapter
        categories.add("Category 1");
        categories.add("Category 2");
        categories.add("Category 3");
        adapter = new CategoryRVAdapter(categories);
        recyclerView.setAdapter(adapter);

        // Button to add new categories
        Button addButton = findViewById(R.id.addButton);
        addButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                addNewCategories();
            }
        });
    }

    private void addNewCategories() {
        List<String> newCategories = new ArrayList<>();
        newCategories.add("New Category 1");
        newCategories.add("New Category 2");
        newCategories.add("New Category 3");

        categories.addAll(newCategories);
        adapter.notifyDataSetChanged();  // Notify the adapter that the data set has changed
    }
}

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You can use this summary as a quick reference for the topics discussed.