fix: allow combining attributes (#83)

Author: Naturalclar

example/App.js

@@ -78,10 +78,20 @@ export default class App extends React.Component<{}, $FlowFixMeState> {
           <Text style={styles.text}>
             Segmented controls can have defined fontSize
           </Text>
+          <View style={styles.segmentContainer}>
+            <SegmentedControl
+              values={['One', 'Two']}
+              style={{height: 80}}
+              fontSize={32}
+            />
+          </View>
           <SegmentedControl
             values={['One', 'Two']}
             style={{height: 80}}
             fontSize={32}
+            textColor="blue"
+            tintColor="green"
+            activeTextColor="red"
           />
         </View>
         <View>

ios/RNCSegmentedControl.m

@@ -78,7 +78,8 @@ - (void)setActiveTextColor:(UIColor *)textColor
     #if defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && defined(__IPHONE_13_0) && \
         __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_13_0
     if (@available(iOS 13.0, *)) {
-      [self setTitleTextAttributes:@{NSForegroundColorAttributeName: textColor}
+      [_attributes setObject: textColor forKey:NSForegroundColorAttributeName];
+      [self setTitleTextAttributes:_attributes
                   forState:UIControlStateSelected];
     }
     #endif
@@ -91,8 +92,9 @@ - (void)setTintColor:(UIColor *)tintColor
     __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_13_0
   if (@available(iOS 13.0, *)) {
     [self setSelectedSegmentTintColor:tintColor];
-    [self setTitleTextAttributes:@{NSForegroundColorAttributeName: tintColor}
-                         forState:UIControlStateNormal];
+    [_attributes setObject: tintColor forKey:NSForegroundColorAttributeName];
+    [self setTitleTextAttributes:_attributes
+                  forState:UIControlStateNormal];
   }
 #endif
 }