Const styles
styles: object = StyleSheet.create({container: {flex: 1,justifyContent: 'space-between',},surface: {padding: 8,height: 80,width: 80,alignItems: 'center',justifyContent: 'center',elevation: 4,},buttonList: {flex: 1,flexDirection: 'row',justifyContent: 'space-evenly',alignItems: 'flex-start',},listButton: {height: 40,flex: 1,},listItem: {margin: 0,padding: 0,},button: {marginRight: 10,height: 45,},paddingDefault: {paddingTop: 20,paddingLeft: 10,paddingRight: 10,},label: {color: 'gray',fontSize: 14,},link: {color: 'blue',fontWeight: 'bold',},tabIcon: {// Icons in tab bar won't show without explicit width / heightwidth: 25,height: TabIconSize,color: 'white',},absoluteCentered: {position: 'absolute',top: 0,left: 0,right: 0,bottom: 0,alignItems: 'center',justifyContent: 'center',},absoluteTop: {position: 'absolute',top: 0,left: 0,right: 0,alignItems: 'center',justifyContent: 'flex-start',},absoluteTopRight: {position: 'absolute',top: 0,left: 0,right: 0,alignItems: 'flex-end',justifyContent: 'flex-start',},absoluteTopLeft: {position: 'absolute',top: 0,left: 0,right: 0,alignItems: 'flex-start',justifyContent: 'flex-start',},absoluteBottom: {position: 'absolute',left: 0,right: 0,bottom: 0,alignItems: 'center',justifyContent: 'flex-end',},absoluteBottomRight: {position: 'absolute',left: 0,right: 0,bottom: 0,alignItems: 'flex-end',justifyContent: 'flex-end',},absoluteBottomLeft: {position: 'absolute',left: 0,right: 0,bottom: 0,alignItems: 'flex-start',justifyContent: 'flex-end',},centerVerticalAndHorizontal: {alignItems: 'center',justifyContent: 'center',},alignCenterJustifyStart: {alignItems: 'center',justifyContent: 'flex-start',},alignStartJustifyStart: {alignItems: 'flex-start',justifyContent: 'flex-start',},alignEndJustifyStart: {alignItems: 'flex-end',justifyContent: 'flex-start',},tabBar: {backgroundColor: Colors.CrossLightBlue,},tabBarTitle: {alignSelf: 'center',},tabBarLabel: {fontSize: 9,},rowContentTopCenter: {flex: 1,flexDirection: 'row',justifyContent: 'center',alignItems: 'flex-start',},rowContentTopLeft: {flex: 1,flexDirection: 'row',justifyContent: 'flex-start',alignItems: 'flex-start',},rowContentTopRight: {flex: 1,flexDirection: 'row',justifyContent: 'flex-end',alignItems: 'flex-start',},rowContentCenterLeft: {flex: 1,flexDirection: 'row',justifyContent: 'flex-start',alignItems: 'flex-start',},rowContentBottomCenter: {flex: 1,flexDirection: 'row',justifyContent: 'center',alignItems: 'flex-end',},columnContentTopCenter: {flex: 1,flexDirection: 'column',justifyContent: 'flex-start',alignItems: 'center',},columnContentTopLeft: {flex: 1,flexDirection: 'column',justifyContent: 'flex-start',alignItems: 'flex-start',},columnContentTopRight: {flex: 1,flexDirection: 'column',justifyContent: 'flex-start',alignItems: 'flex-end',},columnContentCenterRight: {flex: 1,flexDirection: 'column',justifyContent: 'center',alignItems: 'flex-end',},columnContentCenterLeft: {flex: 1,flexDirection: 'column',justifyContent: 'center',alignItems: 'flex-start',},backgroundWhite: {backgroundColor: '#ffffff',},overlay: {backgroundColor: 'rgba(254, 222, 0, 0.3)',position: 'absolute',left: 0,top: 0,bottom: 0,right: 0,},spinner: {width: 50,height: 50,flex: 1,flexDirection: 'row',justifyContent: 'center',alignItems: 'flex-end',opacity: 1,},textCenter: {textAlign: 'center',},textSpinner: {fontSize: 20,color: Colors.CrossLightBlue,textAlign: 'center',fontWeight: 'normal',marginTop: 5,opacity: 1,},modal: {margin: 30,flex: 1,padding: 0,marginTop: 200,},})
Size if icons in tab bars
int