type

google官方說明

我的解釋

CENTER?

Center the image in the view, but perform no scaling.?

劇中顯示，不做縮放

CENTER_CROP?

Scale the image uniformly (maintain the image's aspect ratio) so that both dimensions (width and height) of the image will be equal to or larger than the corresponding dimension of the view (minus padding).?

劇中顯示，等比例縮放，兩邊都大于或等于對示窗口對應(yīng)的那一邊

CENTER_INSIDE?

Scale the image uniformly (maintain the image's aspect ratio) so that both dimensions (width and height) of the image will be equal to or less than the corresponding dimension of the view (minus padding).?

劇中顯示，等比例縮放，兩邊都小于或等于顯示窗口對應(yīng)的那一邊

FIT_CENTER?

Scale the image using?CENTER.
CENTER: Compute a scale that will maintain the original src aspect ratio, but will also ensure that src fits entirely inside dst. At least one axis (X or Y) will fit exactly. The result is centered inside dst.

劇中顯示，等比例縮放，兩邊至少有一邊等于顯示窗口對應(yīng)的那一邊，另一邊小于或等于顯示窗口對應(yīng)的那一邊

FIT_END?

Scale the image using?END
END: Compute a scale that will maintain the original src aspect ratio, but will also ensure that src fits entirely inside dst. At least one axis (X or Y) will fit exactly. END aligns the result to the right and bottom edges of dst.

圖片右下角和窗口右下角對其，等比例縮放，兩邊至少有一邊等于顯示窗口對應(yīng)的那一邊，另一邊小于或等于顯示窗口對應(yīng)的那一邊

FIT_START?

Scale the image using?START
START: Compute a scale that will maintain the original src aspect ratio, but will also ensure that src fits entirely inside dst. At least one axis (X or Y) will fit exactly. START aligns the result to the left and top edges of dst.

圖片左上角和窗口左上角對其，等比例縮放，兩邊至少有一邊等于顯示窗口對應(yīng)的那一邊，另一邊小于或等于顯示窗口對應(yīng)的那一邊

FIT_XY?

Scale the image using?FILL
FILL: Scale in X and Y independently, so that src matches dst exactly. This may change the aspect ratio of the src.

不等比例縮放，x縮放到等于等于顯示窗口對應(yīng)的那一邊，y縮放到等于顯示窗口對應(yīng)的那一邊

MATRIX?

Scale using the image matrix when drawing.?

行\列

1

2

3

1

center

centerCrop

centerInside

2

fitCenter

fitEnd

fitXY

3

fitStart

matrix