Ugrade webview_flutter to 1.0.7 for better ios error detection

[RickVM]

As previously mentioned in some tickets I have some buggy behaviour when loading webviews, and thus flutter_echarts in IOS.
It seems to happen more often if there's multiple webviews, the view will be loaded blank. Refreshing helps, it seems like a 'chance' for things to go wrong.

Think its related to limitations in the flutter engine and IOS which are mentioned in this issue
A workaround has been implemented in the webview plugin as of 1.0.7 here

If we upgrade to the new version we should be able to implement the workaround to detect and handle issues for ios with WebView.onWebResourceError

Might be able to work on this issue this or next week, not sure yet if we should autoreload the webview if it was terminated, or let the user handle this with a callback parameter

[entronad]

Users of flutter_echarts mainly focus on charting.
They don't care about( or even don't know) the webview plugin under the hood. They just want the chart shown.
So I vote for the autoreload solution.

@RickVM , when implementing the autoreload, please be very careful to avoid an endless loop.

[GithubTeemo]

I put the initialization method in WidgetsBinding.instance.addPostFrameCallback, it seems to solve this problem, but I feel that there will be jitter when the chart is loaded.

[lironzemingo]

Users of flutter_echarts mainly focus on charting.
They don't care about( or even don't know) the webview plugin under the hood. They just want the chart shown.
So I vote for the autoreload solution.

@RickVM , when implementing the autoreload, please be very careful to avoid an endless loop.

what is the autoreload solution? We've been having problems with iPhones, not displaying the chart (iPhone 5 and 6)

[hakaari]

In my case the problem was with using charts inside IndexedStack. As a temporary workaround, getting rid of IndexedStack helped.

[KoheiKanagu]

@RickVM
I modified it so that it reloads when onWebResourceError is raised.

flutter_echarts:
  git:
    url: https://github.com/KoheiKanagu/flutter_echarts.git
    ref: feature/onWebResourceError

I'm testing this in my app, but if you want, you can try it to see if it solves the problem.
Note, however, that I have not taken any measures to prevent infinite loops.
We don't know if the infinite loop happens.

I used this as a reference
flutter/flutter#61795 (comment)

[KoheiKanagu]

#104 (comment)

I'm still having problems with my app.

[pye52]

rollback flutter to 1.20.4, everything works fine.
在1.22之后的版本，webview flutter在ios上有很多问题…

[entronad]

Please update to v2.1.0 and try setting reloadAfterInit to true.
Details discussed in #124 .