How do you call the ScaleType property in Android?

In Android, you can use the setScaleType() method of ImageView to set the scaling type of an image.

For example, here is how to set the ScaleType property of an ImageView to FIT_CENTER:

ImageView imageView = findViewById(R.id.image_view);
imageView.setScaleType(ImageView.ScaleType.FIT_CENTER);

You can also directly set the scaleType property of the ImageView in the layout file. For example:

<ImageView
    android:id="@+id/image_view"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:scaleType="fitCenter"
    android:src="@drawable/image" />

常用的ScaleType属性值有：

1. Center: Display the image in the ImageView centered without scaling.
2. centerCrop: Scale the image proportionally to fill the ImageView, which may result in cropping a portion of the image.
3. centerInside: Scale the image proportionally to fit completely inside the ImageView, which may result in white space around the image.
4. fitCenter: Scale the image proportionally to fit completely within the ImageView, which may result in empty spaces around the image.
5. fitStart: Scale the image proportionally to fully display it in the top left corner of the ImageView, which may result in some blank space.
6. fitEnd: Scale the image proportionally to fit completely in the bottom right corner of the ImageView, potentially leaving blank space.
7. fitXY: Stretch the image to fill the entire ImageView, which may result in distortion of the image.

You can choose the appropriate ScaleType attribute to display the image as needed.