return <PopularItem
projectModel={item}
theme={theme}
onSelect={(callback) => {
NavigationUtil.goPage({
theme,
projectModel: item,
flag: FLAG_STORAGE.flag_popular,
callback,
}, ‘DetailPage’)
// this.props.navigation.navigate(‘tab1’);//跳转到createMaterialTopTabNavigator中的指定tab，主要这个navigation一定要是在跳转到createMaterialTopTabNavigator中的指页面获取的
}}

• 将callback传到DetailPage，
• detailpage执行callback(isFavorite);//更新Item的收藏状态，这callback(isFavorite)具体怎么更新isFavorite的？

onFavoriteButtonClick(){
const {projectModel,callback}=this.params;
const isFavorite=projectModel.isFavorite=!projectModel.isFavorite;
callback(isFavorite);//更新Item的收藏状态
this.setState({
isFavorite:isFavorite,
});
let key = projectModel.item.fullName ? projectModel.item.fullName : projectModel.item.id.toString();
if (projectModel.isFavorite) {
this.favoriteDao.saveFavoriteItem(key, JSON.stringify(projectModel.item));
} else {
this.favoriteDao.removeFavoriteItem(key);
}
}