How to configure the ScaleType attribute in Android?
In Android, the scaleType property of ImageView is used to specify the scaling type of the image. Below are the commonly used scaleType properties and their configurations.
- center: Display the image centered without scaling. Configuration method:
android:scaleType="center"
- centerCrop: Scale the image to completely fill the ImageView while maintaining its aspect ratio, and crop out any excess parts. Configuration method:
android:scaleType="centerCrop"
- centerInside: Maintains the aspect ratio of the image and scales it so that it is fully displayed inside the ImageView, possibly leaving blank space. Configuration method:
android:scaleType="centerInside"
- fitCenter: Preserve the aspect ratio of the image and scale it to fit completely within the ImageView, which may result in blank areas. Configuration method:
android:scaleType="fitCenter"
- fitStart: Maintain the aspect ratio of the image and scale it to fit completely inside the ImageView, aligned to the top-left corner. Configuration method:
android:scaleType="fitStart"
- fitEnd: Scale the image while maintaining its aspect ratio, ensuring it is fully displayed within the ImageView and positioned in the bottom right corner. Configuration method:
android:scaleType="fitEnd"
- fitXY: Stretch the image to fill the ImageView, the image may be distorted. Configuration method:
android:scaleType="fitXY"
- Drawing pictures based on the transformation of the matrix. Configuration method:
android:scaleType="matrix"
Choose the appropriate scaleType attribute value in the layout file of the ImageView based on specific requirements.