PeriodicTrigger class Null safety

A trigger that resume/pause sampling every period for a specific duration.

It is important to specify both the period and the duration in order to specify the timing of resuming and pausing sampling.

Weekly and montly recurrent triggers can be specified using the RecurrentScheduledTrigger.



PeriodicTrigger({required Duration period, Duration duration = const Duration(seconds: 1)})
PeriodicTrigger.fromJson(Map<String, dynamic> json)


$type String?
The runtime class name (type) of this object. Used for deserialization from JSON objects.
read / write, inherited
duration Duration
The duration (until paused) of the the sampling.
read / write
fromJsonFunction Function
The function which can convert a JSON string to an object of this type.
read-only, override
hashCode int
The hash code for this object. [...]
read-only, inherited
jsonType String
Return the $type to be used for JSON serialization of this class. Default is runtimeType. Only specify this if you need another type.
read-only, inherited
period Duration
The period (reciprocal of frequency) of sampling.
read / write
requiresMasterDevice bool?
Determines whether the trigger needs to be evaluated on a master device (MasterDeviceDescriptor). For example, this is the case when the trigger is time bound and needs to be evaluated by a task scheduler running on a master device.
@JsonKey(ignore: true), read / write, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
sourceDeviceRoleName String?
The device role name from which the trigger originates.
read / write, inherited


noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
toJson() Map<String, dynamic>
Return a JSON encoding of this object.
toString() String
A string representation of this object. [...]


operator ==(Object other) bool
The equality operator. [...]