反转 scheduler 与 services layer 的依赖关系
Summary
#The services layer now depends on the scheduler layer.
Previously, the opposite was true. This may affect you
if you have defined custom bindings overriding
Flutter's SchedulerBinding
or ServicesBinding
.
Context
#Prior to this change, the scheduler layer was dependent
on the services layer. This change reverses the dependency
chain and allows the services layer to make use of the
scheduling primitives in the scheduler layer. For example,
services in the services layer can now schedule tasks by using
SchedulerBinding.scheduleTask
.
Description of change
#The change only affects users who are defining their own
custom bindings based on Flutter's SchedulerBinding
and ServicesBinding
.
Migration guide
#Prior to this change, the ServiceBinding
had to be defined before the
SchedulerBinding
. With this change, it is the other way around:
Code before migration:
class FooBinding extends BindingBase with ServicesBinding, SchedulerBinding {
// ...
}
Code after migration:
class FooBinding extends BindingBase with SchedulerBinding, ServicesBinding {
// ...
}
Timeline
#Landed in version: 1.18.0
In stable release: 1.20
References
#API documentation:
Relevant PRs:
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