CircleImageView's detailed method of implementing a round avatar

CircleImageView is a custom ImageView, which can achieve the effect of displaying round avatars.In Android development, there is often a need for circular avatars. CircleImageView provides a simple and fast method to achieve this effect.This article will analyze the implementation principles of CircleImageView in detail and provide examples of Java code. First, we need to introduce the CircleImageView library in the project.It can be achieved by adding the following dependencies in the built.gradle file: implementation 'de.hdodenhof:circleimageview:3.1.0' Next, use CircleImageView to display the round avatar in the layout file: <de.hdodenhof.circleimageview.CircleImageView android:id="@+id/profile_image" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/profile" app:civ_border_color="#FF000000" app:civ_border_width="2dp"/> In this example, we set up a CircleImageView for the ID of the ID, and specify the avatar resource picture through the SRC attribute.At the same time, we also set up the color and width of the border, which can be customized according to the needs. After completing the layout, we can obtain a CircleImageView instance in the Java code and set the avatar: CircleImageView profileImage = findViewById(R.id.profile_image); profileImage.setImageResource(R.drawable.profile); By calling the SetResOreImage method, we can simply set the avatar resource picture. In addition to setting resource pictures, we can also set avatars in other ways, such as loading pictures from the Internet.You can use some third -party libraries, such as Glide to load the picture: String imageUrl = "https://example.com/profile.jpg"; Glide.with(context) .load(imageUrl) .into(profileImage); Load the network picture by calling the load method of the Glide library, and call the INTO method to load the picture to the CircleImageView. By default, the CircleImageView will shrink the avatar into a circular shape.If you need to set up other shapes of avatars, you can use SetBorderWidth and SetBorderColor methods to implement.For example, you can set the rounded avatar through the following code: CircleImageView profileImage = findViewById(R.id.profile_image); profileImage.setBorderWidth(5); profileImage.setBorderColor(Color.RED); profileImage.setCornerRadius(20); Set the border width by calling the SetBorderWidth method, setting the border color, setcornerradius method to set the rounded radius, which can achieve different shapes of the avatar effect. To sum up, the method of achieving round avatars with CircleImageView is very simple.By introducing the CircleImageView library, using the CircleImageView to display the avatar in the layout file, and set the avatar picture through the Java code, you can quickly achieve the effect of the round avatar.If you need to set up other shapes of avatars, you can use SetBorderWidth, SetBorderColor, and Setcornerradius for customization.This makes the round avatar very easy. It is hoped that this article can help readers understand and use CircleImageView to better display user avatars in actual development.