Android support cardView V7 framework principle interpretation and practice

Android supports CardView V7 framework principle interpretation and practice Overview: CardView is a component in the Android support library, which provides a simple way to create a card -type user interface.This framework is compatible with Android 5.0 (API level 21) and higher versions of equipment.This article will introduce the principle interpretation and practice of the CardView V7 framework to help developers understand how to use CardView to create a beautiful card -type interface. CardView V7 framework principle interpretation: CardView is based on the Framelayout component, so it can easily put other view components into the card.The CardView V7 framework enhances the appearance and layering of the card by using shadows and rounded borders. To use the CardView V7 framework, you first need to add dependencies to the project's Gradle file: dependencies { implementation 'androidx.cardview:cardview:1.0.0' } Then, use the CardView component in the layout file: <androidx.cardview.widget.CardView android:id="@+id/card_view" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margin="16dp" app:cardCornerRadius="8dp" app:cardElevation="4dp"> <!-place other view components here-> </androidx.cardview.widget.CardView> In the above code, we created a CardView with width, height, inner side spacing, rounded corner radius and shadow. Example: The following is a simple example, showing how to add a picture and a text to CardView:: <androidx.cardview.widget.CardView android:id="@+id/card_view" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margin="16dp" app:cardCornerRadius="8dp" app:cardElevation="4dp"> <RelativeLayout android:layout_width="match_parent" android:layout_height="match_parent" android:padding="8dp"> <ImageView android:layout_width="80dp" android:layout_height="80dp" android:src="@drawable/image" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_toRightOf="@id/image_view" android:text="Hello CardView!" android:textSize="16sp" /> </RelativeLayout> </androidx.cardview.widget.CardView> In the example, we created a CardView and added a RelativeLayout inside.RelativeLayout contains an imageView for display pictures, and a textView for display text.By setting the layout parameters, we ensure that the pictures and text are displayed correctly in the card. in conclusion: By using the CardView V7 framework, we can easily create a beautiful card -type interface.By setting an appropriate layout parameter, we can put other view components in the card to build an impressive user interface.It is hoped that this article will help understand the principle and practice of understanding the CardView V7 framework.