      h            \           
         +   8   G   W   f   v                    gravity orientation id paddingLeft 

paddingTop paddingRight 

paddingBottom layout_width 

layout_height 

layout_weight layoutDirection Button android ))androidx.appcompat.widget.ButtonBarLayout **http://schemas.android.com/apk/res/android style  4                                 
     
               P                       [                                                            
                                                     	       ?     n               %                                         	       ?     m     %          ,                                         	       ?     o     ,             
                