gridview - Set grid view width, Android -

i'm trying make calendar activity, uses grid view display days in month. needs display 7 elements per row correspond 7 days of week. however, when try implement it, doesn't stretch elements across entire width of screens, there small gap @ right end of screen seen in picture. calendar picture

this xml code use grid view:

<gridview         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:id="@+id/grid_view"         android:numcolumns="7"         android:stretchmode="columnwidth">     </gridview> 

i'm using genymotion emulator haven't tested on real device.

please, check paddingright property of gridview parent.