针对android 做适配

review 于良

@@ -11,6 +11,7 @@ const {
     TouchableOpacity,
     StyleSheet,
     Dimensions,
+    Platform,
 } = ReactNative;
 
 export default class BrandSwiper extends React.Component {
@@ -26,7 +27,7 @@ export default class BrandSwiper extends React.Component {
                 borderRadius: 3,
                 marginLeft: 3,
                 marginRight: 3,
-                marginTop: 3,
+                marginTop: (Platform.OS === 'ios')?3:23,
                 marginBottom: 23,
             }}
         />;
@@ -78,7 +79,7 @@ export default class BrandSwiper extends React.Component {
                     autoplayTimeout={2}
                     paginationStyle={{bottom: 8}}
                     dot={this.dot}
-                    activeDot={this.activeDot}
+                    activeDot={(Platform.OS === 'ios')?this.activeDot:null}
                     width={width}
                     height={swiperHeight}
                 >
@@ -93,7 +94,7 @@ export default class BrandSwiper extends React.Component {
                             >
                                 <Image
                                     source={{uri: item.src}}
-                                    style={{width: width, height: swiperHeight - 20}}
+                                    style={{width: width, height: swiperHeight}}
                                 />
                             </TouchableOpacity>
                         );