Roid imageView proportional Scaling

Android: scaleType controls the scaling mode of images. The sample code is as follows:

1	<ImageView android:id="@+id/img"

2	android:src="@drawable/logo"

3	android:scaleType="centerInside"

4	android:layout_width="60dip"

5	android:layout_height="60dip"

6	android:layout_centerVertical="true"/>

Note: centerInside indicates scaling the image proportionally, so that the image length (width) is smaller than or equal to the corresponding dimension of the view.

Note: The controlled images are resources rather than backgrounds, that is, android: src = "@ drawable/logo", not android: background = "@ drawable/logo ", I am stupid enough to make this low-level mistake, causing scaleType to be ineffective. The dynamic loading of images in the program is similar, for example, imgView. setImageResource (Integer) mData. get (position ). get ("img"); not imgView. setBackgroundResource (Integer) mData. get (position ). get ("img "));

Appendix: More detailed scaleType description:

CENTER/center displays images in the view CENTER without scaling

CENTER_CROP/centerCrop scales the image proportionally so that the image length (width) is greater than or equal to the corresponding dimension of the view.

CENTER_INSIDE/centerInside scales the image proportionally so that the image length (width) is smaller than or equal to the corresponding dimension of the view.

FIT_CENTER/fitCenter scales the image proportionally to the smallest side of the view and is displayed in the center.

FIT_END/fitEnd scales the image proportionally to the smallest side of the view, which is displayed in the lower part of the view.

FIT_START/fitStart scales up or down an image proportionally to the smallest side of the view, which is displayed on the top of the view.

FIT_XY/fitXY: scale the image out of proportion to the view size.

MATRIX/matrix is drawn using a MATRIX.