enhancementgood first issue
描述
看了fish-redux的todoList demo，发现里面连接全局状态的方法是使用visitor
visitor: (String path, Page<Object, dynamic> page) {
/// 只有特定的范围的 Page 才需要建立和 AppStore 的连接关系
/// 满足 Page<T> ，T 是 GlobalBaseState 的子类
if (page.isTypeof<GlobalBaseState>()) {
/// 建立 AppStore 驱动 PageStore 的单向数据连接
/// 1. 参数1 AppStore
/// 2. 参数2 当 AppStore.state 变化时, PageStore.state 该如何变化
page.connectExtraStore<GlobalState>(GlobalStore.store,
(Object pagestate, GlobalState appState) {
final GlobalBaseState p = pagestate;
if (p.themeColor != appState.themeColor) {
if (pagestate is Cloneable) {
final Object copy = pagestate.clone();
final GlobalBaseState newState = copy;
newState.themeColor = appState.themeColor;
return newState;
}
}
return pagestate;
});
}
但是pageview的子页面是由 AccountPage().buildPage(null)这种方式生成的，并不会触发visitor的回调。
Widget pageViewItemBuilder(BuildContext context, int index) {
if (index == 0) {
return AccountPage().buildPage(null);
} else if (index == 1) {
return TranscationPage().buildPage(null);
} else if (index == 2) {
return PersonPage().buildPage(null);
}
return Text('页面跳转错误');
}
为了解决这个问题，我在page的构造方法中连接了全局状态。
this.connectExtraStore<GlobalState>(GlobalStore.store,
(Object pageState, GlobalState appState) {
debugPrint('克隆该页面');
if (pageState is Cloneable) {
final Object copy = pageState.clone();
final GlobalAccountBaseState newState = copy;
newState.totalAssets = appState.totalAssets;
newState.netAssets = appState.netAssets;
newState.debt = appState.debt;
return newState;
}
return pageState;
});
请问是否有更加好的解决办法