android-activity之默认启动模式和FLAG_ACTIVITY_NEW_TASK

最新推荐文章于 2024-08-02 23:25:07 发布

原创最新推荐文章于 2024-08-02 23:25:07 发布 · 917 阅读

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#activity启动模式

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本文通过一系列测试案例展示了不同启动模式下Android活动中任务栈的变化情况，包括默认启动模式、添加FLAG_ACTIVITY_NEW_TASK标志后的效果等。

测试应用主activityA使用默认启动模式
ACTIVITY MANAGER ACTIVITIES (dumpsys activity activities)
Display #0 (activities from top to bottom):
Stack #5:
    Task id #27
    * TaskRecord{4f29769 #27 A=com.wp.launchmode U=0 sz=1}
      * Hist #0: ActivityRecord{a0bc5f0 u0 com.wp.launchmode/.ActivityA t27}

Stack #0:

打开activityB，添加flag----FLAG_ACTIVITY_NEW_TASK
ACTIVITY MANAGER ACTIVITIES (dumpsys activity activities)
Display #0 (activities from top to bottom):
Stack #5:
    Task id #28
    * TaskRecord{a1743d1 #28 A=com.wp.launchmode U=0 sz=1}
      * Hist #0: ActivityRecord{2ef42f8 u0 com.wp.launchmode/.ActivityB t28}
    Task id #27
    * TaskRecord{4f29769 #27 A=com.wp.launchmode U=0 sz=1}
      * Hist #0: ActivityRecord{a0bc5f0 u0 com.wp.launchmode/.ActivityA t27}

Stack #0:

打开activityC
ACTIVITY MANAGER ACTIVITIES (dumpsys activity activities)
Display #0 (activities from top to bottom):
Stack #5:
    Task id #28
    * TaskRecord{a1743d1 #28 A=com.wp.launchmode U=0 sz=2}
      * Hist #1: ActivityRecord{1aa9a57 u0 com.wp.launchmode/.ActivityC t28}
      * Hist #0: ActivityRecord{2ef42f8 u0 com.wp.launchmode/.ActivityB t28}
    Task id #27
    * TaskRecord{4f29769 #27 A=com.wp.launchmode U=0 sz=1}
      * Hist #0: ActivityRecord{a0bc5f0 u0 com.wp.launchmode/.ActivityA t27}

Stack #0:

打开activityD
ACTIVITY MANAGER ACTIVITIES (dumpsys activity activities)
Display #0 (activities from top to bottom):
Stack #5:
    Task id #28
    * TaskRecord{a1743d1 #28 A=com.wp.launchmode U=0 sz=3}
      * Hist #2: ActivityRecord{8581614 u0 com.wp.launchmode/.ActivityD t28}
      * Hist #1: ActivityRecord{1aa9a57 u0 com.wp.launchmode/.ActivityC t28}
      * Hist #0: ActivityRecord{2ef42f8 u0 com.wp.launchmode/.ActivityB t28}
    Task id #27
    * TaskRecord{4f29769 #27 A=com.wp.launchmode U=0 sz=1}
      * Hist #0: ActivityRecord{a0bc5f0 u0 com.wp.launchmode/.ActivityA t27}

Stack #0:

打开activityA
ACTIVITY MANAGER ACTIVITIES (dumpsys activity activities)
Display #0 (activities from top to bottom):
Stack #5:
    Task id #27
    * TaskRecord{4f29769 #27 A=com.wp.launchmode U=0 sz=1}
      * Hist #0: ActivityRecord{a0bc5f0 u0 com.wp.launchmode/.ActivityA t27}
    Task id #28
    * TaskRecord{a1743d1 #28 A=com.wp.launchmode U=0 sz=3}
      * Hist #2: ActivityRecord{8581614 u0 com.wp.launchmode/.ActivityD t28}
      * Hist #1: ActivityRecord{1aa9a57 u0 com.wp.launchmode/.ActivityC t28}
      * Hist #0: ActivityRecord{2ef42f8 u0 com.wp.launchmode/.ActivityB t28}

Stack #0:

打开activityB，C，D
ACTIVITY MANAGER ACTIVITIES (dumpsys activity activities)
Display #0 (activities from top to bottom):
Stack #5:
    Task id #28
    * TaskRecord{a1743d1 #28 A=com.wp.launchmode U=0 sz=3}
      * Hist #2: ActivityRecord{8581614 u0 com.wp.launchmode/.ActivityD t28}
      * Hist #1: ActivityRecord{1aa9a57 u0 com.wp.launchmode/.ActivityC t28}
      * Hist #0: ActivityRecord{2ef42f8 u0 com.wp.launchmode/.ActivityB t28}
    Task id #27
    * TaskRecord{4f29769 #27 A=com.wp.launchmode U=0 sz=1}
      * Hist #0: ActivityRecord{a0bc5f0 u0 com.wp.launchmode/.ActivityA t27}

Stack #0: