[ios] after flutter page to flutter page, page cann't refresh by setState

[vipycm]

after flutter page to flutter page, page cann't refresh by setState.

after setState, the build method has been called, but the page ui not change.

在flutter页面通过HybridStackManagerPlugin.hybridStackManagerPlugin.openUrlFromNative 跳转到另一个flutter页面之后，StatefulWidget页面不能通过setState刷新，页面动画也不能播放了。
ios上有这个问题，android正常。

[chaishuanzhu]

我也遇到了这个问题。页面内容不会刷新，但是滑动和点击事件还是生效的。您现在解决了吗？

[chaishuanzhu]

https://github.com/flutter/engine/blob/master/shell/platform/darwin/ios/framework/Source/FlutterViewController.mm
FlutterViewController源码部分

- (instancetype)initWithEngine:(FlutterEngine*)engine
                       nibName:(NSString*)nibNameOrNil
                        bundle:(NSBundle*)nibBundleOrNil {
  NSAssert(engine != nil, @"Engine is required");
  self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
  if (self) {
    _viewOpaque = YES;
    _engine.reset([engine retain]);
    _engineNeedsLaunch = NO;
    _flutterView.reset([[FlutterView alloc] initWithDelegate:_engine opaque:self.isViewOpaque]);
    _weakFactory = std::make_unique<fml::WeakPtrFactory<FlutterViewController>>(self);
    [self performCommonViewControllerInitialization];
    [engine setViewController:self];
  }
  return self;
}

当跳转到第二个Flutter页面时，engine的viewController发生了改变。

[vipycm]

https://github.com/flutter/engine/blob/master/shell/platform/darwin/ios/framework/Source/FlutterViewController.mm
FlutterViewController源码部分

- (instancetype)initWithEngine:(FlutterEngine*)engine
                       nibName:(NSString*)nibNameOrNil
                        bundle:(NSBundle*)nibBundleOrNil {
  NSAssert(engine != nil, @"Engine is required");
  self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
  if (self) {
    _viewOpaque = YES;
    _engine.reset([engine retain]);
    _engineNeedsLaunch = NO;
    _flutterView.reset([[FlutterView alloc] initWithDelegate:_engine opaque:self.isViewOpaque]);
    _weakFactory = std::make_unique<fml::WeakPtrFactory<FlutterViewController>>(self);
    [self performCommonViewControllerInitialization];
    [engine setViewController:self];
  }
  return self;
}

当跳转到第二个Flutter页面时，engine的viewController发生了改变。

engine的viewController是发生了改变，但是两个ViewController都不能刷新了，滑动和点击有效。

[chaishuanzhu]

我在XFlutterViewController.m里重置了engine的controller。

- (void)viewWillAppear:(BOOL)animated {
    [XFlutterModule sharedInstance].flutterEngine.viewController = self;
    self.navigationController.navigationBarHidden = TRUE;
    self.originalGestureDelegate = self.navigationController.interactivePopGestureRecognizer.delegate;
    self.navigationController.interactivePopGestureRecognizer.delegate = self;
    [super viewWillAppear:animated];
    if(self.viewWillAppearBlock){
        self.viewWillAppearBlock();
        self.viewWillAppearBlock = nil;
    }
}

从Native跳转到Flutter正常了。从Flutter跳转到Flutter还是不行。

[chaishuanzhu]

最新版的把FlutterViewWrapperController给去掉了。我把最新版的下载下来，把这个项目的XFlutterViewController，和FlutterViewWrapperController放进去。把HybridStackManager和XFlutterModule中用到的XFlutterViewController换成了FlutterViewWrapperController。上述问题解决了。暂时没发现其他问题。

[vipycm]

最新版的把FlutterViewWrapperController给去掉了。我把最新版的下载下来，把这个项目的XFlutterViewController，和FlutterViewWrapperController放进去。把HybridStackManager和XFlutterModule中用到的XFlutterViewController换成了FlutterViewWrapperController。上述问题解决了。暂时没发现其他问题。

我试了一下，确实没有这个问题了，但是第一次启动flutter页面的时候会显示闪屏页面