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Stop pumping frames in applicationWillResignActive (#7450)

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According to Apple's [OpenGL ES Programming guide][1], applications
should pause any animations in applicationWillResignActive. Any GL calls
after applicationDidEnterBackground will cause the app to be terminated
immedidately by iOS.

The surfaceUpdated:YES call is moved to the handler for the
applicationDidBecomeActive notification to handle cases where the
application becomes inactive then active again without being
backgrounded (e.g. home button double-tap then return to app directly).

[1]: https://developer.apple.com/library/archive/documentation/3DDrawing/Conceptual/OpenGLES_ProgrammingGuide/ImplementingaMultitasking-awareOpenGLESApplication/ImplementingaMultitasking-awareOpenGLESApplication.html#//apple_ref/doc/uid/TP40008793-CH5-SW1
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Chris Bracken 2019-01-12 09:14:23 -08:00 committed by GitHub
parent abbc34e148
commit d1d8b4d416
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1 changed files with 3 additions and 3 deletions
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6
shell/platform/darwin/ios/framework/Source/FlutterViewController.mm
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@ -436,24 +436,24 @@
- (void)applicationBecameActive:(NSNotification*)notification {
TRACE_EVENT0("flutter", "applicationBecameActive");
if (_viewportMetrics.physical_width)
[self surfaceUpdated:YES];
[[_engine.get() lifecycleChannel] sendMessage:@"AppLifecycleState.resumed"];
}
- (void)applicationWillResignActive:(NSNotification*)notification {
TRACE_EVENT0("flutter", "applicationWillResignActive");
[self surfaceUpdated:NO];
[[_engine.get() lifecycleChannel] sendMessage:@"AppLifecycleState.inactive"];
}
- (void)applicationDidEnterBackground:(NSNotification*)notification {
TRACE_EVENT0("flutter", "applicationDidEnterBackground");
[self surfaceUpdated:NO];
[[_engine.get() lifecycleChannel] sendMessage:@"AppLifecycleState.paused"];
}
- (void)applicationWillEnterForeground:(NSNotification*)notification {
TRACE_EVENT0("flutter", "applicationWillEnterForeground");
if (_viewportMetrics.physical_width)
[self surfaceUpdated:YES];
[[_engine.get() lifecycleChannel] sendMessage:@"AppLifecycleState.inactive"];
}