Use Android support card view V7 framework to achieve card stacking effect
Use Android support card view V7 framework to achieve card stacking effect
Android support card view V7 framework is a set of supporting function libraries used to implement the card interface. It provides a simple and effective way to display multiple cards and achieve the stacking effect of the card.This effect can increase the interactivity and visual effects of applications, and also provides an intuitive way for users to operate.
First of all, we need to add the Android support card view V7 framework to the project's Gradle file:
gradle
implementation 'com.android.support:cardview-v7:28.0.0'
In the layout file, we can use CardView to lay out the container to package the contents of the card.For example, suppose we have a RecyclerView to display multiple cards. Each card content contains pictures and text:
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:cardCornerRadius="8dp"
app:cardElevation="4dp"
app:cardUseCompatPadding="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="16dp">
<ImageView
android:layout_width="match_parent"
android:layout_height="200dp"
android:src="@drawable/card_image" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
Android: Text = "This is the title of a card" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
Android: text = "This is the content of the card" />
</LinearLayout>
</android.support.v7.widget.CardView>
Next, we need to build a RecyclerView.adapter category to provide card data and layout.In the OnbindViewholder method, we can set the contents of each card:
public class CardAdapter extends RecyclerView.Adapter<CardAdapter.CardViewHolder> {
private List<Card> cardList;
public static class CardViewHolder extends RecyclerView.ViewHolder {
public ImageView imageView;
public TextView titleTextView;
public TextView contentTextView;
public CardViewHolder(View view) {
super(view);
imageView = view.findViewById(R.id.card_image);
titleTextView = view.findViewById(R.id.card_title);
contentTextView = view.findViewById(R.id.card_content);
}
}
public CardAdapter(List<Card> cardList) {
this.cardList = cardList;
}
@NonNull
@Override
public CardViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.card_item, parent, false);
return new CardViewHolder(itemView);
}
@Override
public void onBindViewHolder(@NonNull CardViewHolder holder, int position) {
Card card = cardList.get(position);
holder.imageView.setImageResource(card.getImageResource());
holder.titleTextView.setText(card.getTitle());
holder.contentTextView.setText(card.getContent());
}
@Override
public int getItemCount() {
return cardList.size();
}
}
Finally, we need to set up RecyclerView and card adapter in Activity or Fragment:
RecyclerView recyclerView = findViewById(R.id.recycler_view);
CardAdapter cardAdapter = new CardAdapter(cardList);
RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(this);
recyclerView.setLayoutManager(layoutManager);
recyclerView.setAdapter(cardAdapter);
Through the above steps, we can achieve the effect of stacking cards, and each card has the characteristics of shadow, rounded corner and adaptive content.Users can operate the corresponding operation by sliding or clicking the card.
It is hoped that this article will be helpful to achieve card stacking effects using the Android support card view V7 framework.Through this framework, we can easily create a card interface with rich interactive and visual effects.You can further customize and expand the function and appearance of the card according to your needs.
