android studio - Blank Activity Fit To Screen -


in android studio 2.1, want create main activity 2. how can ? please see attachment. can fix exact screen size of device android game ?

simple way: in activity need extends activity instead of appcompatactivity: 

public class youractivity extends appcompatactivity

==>

public class youractivity extends activity

update: put in oncreate() method, go full screen mode

getwindow().getdecorview().setsystemuivisibility( view.system_ui_flag_layout_stable | view.system_ui_flag_layout_hide_navigation | view.system_ui_flag_layout_fullscreen | view.system_ui_flag_hide_navigation | view.system_ui_flag_fullscreen | view.system_ui_flag_immersive_sticky);

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