Android:scaletype Property

Android:scaletype is a size that controls how the picture resized/moved to the ImageView.

The meaning difference of Imageview.scaletype/android:scaletype value:

Center/center is centered on the original size of the image, and when the picture is longer/wider than the length/width of the view, the center portion of the image is displayed

Center_crop/centercrop Proportionally enlarges the size of the image so that the image is long (wide) equal to or greater than the length (width) of the view

center_inside/centerinside Displays the contents of the picture in full, by scaling it down or the original size to make the picture long/wide equal to or less than the length/width of the view

fit_center/fitcenter Enlarge/Shrink the picture to the width of the view, centered on the display

fit_end/fitend Zoom in/out to the width of the view, displayed in the lower part of the view

fit_start/fitstart Enlarge/Shrink the image to the width of the view, displayed in the upper part of the view

Fit_xy/fitxy The picture is not scaled up/down to the view size display

The Matrix/matrix is drawn with a matrix and is displayed by zooming in and out of the image.

Android:scaletype Property