不能在异步函数的回调中 setState about uiwidgets

[SolarianZ]

Android和Unity都不允许在非主线程操作UI吧

[Latias94]

Android和Unity都不允许在非主线程操作UI吧

在回调中写应该没问题吧？那应该怎么改呢？

[kgdev]

嗯嗯 首先你要打开debug模式, 然后会有相应的提示信息给到你.

Define UIWidgets_DEBUG
It's recommended to define the UIWidgets_DEBUG script symbol in editor, this will turn on debug assertion in UIWidgets, which will help to find potential bugs earlier. To do this: please go to Player Settings -> Other Settings -> Configuration -> Scripting Define Symbols, and add UIWidgets_DEBUG.
The symbol is for debug purpose, please remove it from your release build.

[Latias94]

嗯嗯 首先你要打开debug模式, 然后会有相应的提示信息给到你.

Define UIWidgets_DEBUG
It's recommended to define the UIWidgets_DEBUG script symbol in editor, this will turn on debug assertion in UIWidgets, which will help to find potential bugs earlier. To do this: please go to Player Settings -> Other Settings -> Configuration -> Scripting Define Symbols, and add UIWidgets_DEBUG.
The symbol is for debug purpose, please remove it from your release build.

你好，上面的报错就是加了 UIWidgets_DEBUG 后的报错信息，想问问有没有网络请求的 sample 供参考呢？

[kgdev]

Try to use "using (WindowProvider.of(BuildContext).getScope()) { ... }" to wrap your code.

BuildContext 如果在widget里面就是this.context.

[SolarianZ]

Android和Unity都不允许在非主线程操作UI吧

在回调中写应该没问题吧？那应该怎么改呢？

你的回调方法是在主线程里面声明的，但是它的调用是在异步线程中调用的，所以他还是在异步中执行的。应该在主线程中写一个调用队列，异步完成时把回调塞到队列里，然后主线程一直检测队列中是否有要执行的回调，如果有，就执行，这样UI操作就回到主线程执行了。

[Latias94]

Try to use "using (WindowProvider.of(BuildContext).getScope()) { ... }" to wrap your code.

BuildContext 如果在widget里面就是this.context.

Solved!
Thanks for your quick response, May I ask if there has a communication group for testing UIWidgets?

[kgdev]

https://connect.unity.com/u/kevin-gu

Add me as a friend and I will add you to our wechat group.

[qingbaomeng]

@Latias94 using (WindowProvider.of(BuildContext).getScope()) { ... }
你是用这个方案解决的吗？

[Latias94]

@Latias94 using (WindowProvider.of(BuildContext).getScope()) { ... }
你是用这个方案解决的吗？

你好，我忘了... 不过你可以参考下两个官方开源应用的做法：
https://github.com/UnityTech/ConnectAppCN
https://github.com/UnityTech/DocCN