我使用从npm:react-native-banner-carousel
下载的库https://www.npmjs.com/package/react-native-banner-carousel
不幸的是我的初始运行有问题:例如:错误的活动页面指示符:索引0处的图像,指标应该是索引0,不幸的是索引3处的指示符,这是我的代码:
<View style={ {flex: 1,paddingTop: 20 }}>
<Carousel autoplay={true} autoplayTimeout={1000} loop={true} index={0} pageSize={BannerWidth} activePageIndicatorStyle={{backgroundColor: '#fff' , direction: 'rtl'}} pageIndicatorContainerStyle={{direction: 'rtl' }} >
{this.state.carouselData.map((ad_info, index) => this.renderPage(ad_info, index))}
</Carousel>
</View>
渲染页面功能是:
renderPage(ad_info, index) {
console.log("Ghadeer index", index , "::" , ad_info.ad_Title)
var base64Icon = 'data:image/png;base64,'+ ad_info.ad_Banner;
return (
<TouchableOpacity transparent style={{width:BannerWidth,height:130, zIndex: 2}} transparent
onPress={() => this.openWebView(ad_info)}>
<Image
style={{width:BannerWidth , height: 130 , justifyContent: 'center', alignItems: 'center'}}
source={{uri: base64Icon}}
/>
</TouchableOpacity>
);
}
问题是从服务器下载图像。我修复了它:从服务器完成下载后初始化轮播,下面是我的代码:
{this.state.finishDownloadAdsImageFromServer ? (<View style={styles.carouselContainer}>
<Carousel
autoplay
autoplayTimeout={1000}
loop
index={0}
pageSize={BannerWidth}
activePageIndicatorStyle={{backgroundColor: '#fff' }}
>
{this.state.carouselData.map((ad_info, index) => this.renderPage(ad_info, index))}
</Carousel>
</View>) : <View/>}
谢谢,