Allow passing different entrypoints other than 'main'

[bittuahlawat]

Steps to Reproduce

Create two entry points in a new flutter project: main and main2. Displaying main2 is not possible, because FlutterViewController always points to the main entry point.

Even though FlutterDartProject allows you to the pass other entry points using this function:

- (void)launchInEngine:(shell::Engine*)engine
        withEntrypoint:(NSString*)entrypoint
        embedderVMType:(VMType)embedderVMType
                result:(LaunchResult)result

FlutterViewController calls this other method instead:

- (void)launchInEngine:(shell::Engine*)engine
        embedderVMType:(VMType)embedderVMType
                result:(LaunchResult)result

which in turn calls the first one with a hardcoded main as the entryPoint.

 switch (_vmTypeRequirement) {
    case VMTypeInterpreter:
      [self runFromSourceInEngine:engine withEntrypoint:@"main" result:result];
      return;
    case VMTypePrecompilation:
      [self runFromPrecompiledSourceInEngine:engine withEntrypoint:@"main" result:result];
      return;
    case VMTypeInvalid:
      break;
  }

We need ability to pass in the entry point via FlutterViewController rather than it selecting one on its own in order to embed multiple flutter views in the app.

[tvolkert]

This is possible now in the new Android embedding. @gaaclarke do you know if it's possible in the iOS embedding?

[gaaclarke]

Yep, possible in iOS: https://github.com/flutter/engine/blob/5ef2c7968c7215acaffddd008a8ccabeb7cb6706/shell/platform/darwin/ios/framework/Headers/FlutterEngine.h#L145

[tvolkert]

Cool - I'm going to close this as fixed, then.

[github-actions]

This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.