LifecycleState enum
生命周期状态
Values
- onInit → const LifecycleState
-
初始化,触发一次 如同 State.initState onInit:初始化状态,单场景调用 BuildContext 在初始化时期不可用
- onCreate → const LifecycleState
-
创建,触发一次 如同
WidgetsBinding.instance.addPostFrameCallbackonCreate:widget 完成创建,完成首帧绘制,单场景调用 - onStart → const LifecycleState
-
开始执行,可能触发多次 onStart:widget 开始执行,多场景调用, 与 #onStop 成对
- onResume → const LifecycleState
-
恢复执行,重新回到可执行状态,可能触发多次 onResume:widget 恢复执行,在widget重新回到用户视野/回到前台获取焦点时调用,多场景调用,与 #onPause 成对
- onPause → const LifecycleState
-
挂起/暂停执行,可能执行多次 onPause:widget 挂起执行,在widget失去焦点/进入后台/被系统或自定义的非全屏弹窗遮挡时调用,多场景调用,与 #onResume 成对
- onStop → const LifecycleState
-
停止执行,可能执行多次 onStop:widget 停止执行,在widget完全离开用户视野/进入后台/被系统或自定义的全屏弹窗遮挡时调用,多场景调用,与 #onStart 成对
- onDestroy → const LifecycleState
-
销毁,执行一次 如同 State.dispose onDestroy:widget 销毁,页面销毁/退出程序时调用,单场景调用
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- index → int
-
A numeric identifier for the enumerated value.
no setterinherited
- name → String
-
Available on Enum, provided by the EnumName extension
The name of the enum value.no setter - runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Constants
-
values
→ const List<
LifecycleState> - A constant List of the values in this enum, in order of their declaration.