Added iOS location plugin to showcase background execution APIs #656
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| @Override | ||
| public void onMethodCall(MethodCall call, Result result) { | ||
| if (call.method.equals("getPlatformVersion")) { |
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Should this return result.notImplemented() unconditionally?
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Didn't even think to look at the Android stuff. Thanks!
| /// This is an example of a callback for LocationBackgroundPlugin's | ||
| /// `startMonitoringLocation`. A callback can be defined anywhere in an | ||
| /// application's code, but cannot be from another program. | ||
| class Foo { |
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Let's have a better name than Foo =) Something that hints at what one might do with location data. Maybe "LocationMonitor" or ...
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This was left over from testing, so I'll go with your suggestion :)
| // isolates since they do not share memory. | ||
| uiSendPort = IsolateNameServer.lookupPortByName(kLocationPluginPortName); | ||
| } | ||
| uiSendPort?.send(location.toJson()); |
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What happens when the foreground isolate closes the port?
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I've changed this so the port lookup is done on each event since there's really no other way to tell that an isolate port has been closed from the SendPort. Thoughts?
| } | ||
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| // Listen on the port for location updates from our background callback. | ||
| _foregroundPort.listen((dynamic message) { |
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When does this port get closed?
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This port should stay open the life of the UI, but I've updated this logic to remove the port from the IsolateNameServer on close.
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| # Flutter Background Execution Sample - LocationBackgroundPlugin | ||
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| A example Flutter plugin that showcases background execution using iOS location services. | ||
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Not necessarily in this PR, but it would be good to fill this out with brief installation and usage examples.
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| @Override | ||
| public void onMethodCall(MethodCall call, Result result) { | ||
| result.notImplemented(); |
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If you had plans to implement the Android side, you might add a TODO here that points to the API to use and explains the strategy a bit.
| flutter_test: | ||
| sdk: flutter | ||
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| location_background_plugin: |
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Should this be a regular dependency?
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Probably. Not sure how that ended up there.
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| #import <CoreLocation/CoreLocation.h> | ||
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| @implementation LocationBackgroundPlugin { |
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As with the android_alarm_manager plugin, I think this file needs detailed comments so that 3p plugin developers know how to hook into the background execution features of the engine.
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