android-activity之singleTask启动模式

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配置清单文件中设置ActivityA启动模式为singleTask
应用启动，打开ActivityA
ACTIVITY MANAGER ACTIVITIES (dumpsys activity activities)
Display #0 (activities from top to bottom):
Stack #26:
    Task id #179
    * TaskRecord{5444049 #179 A=com.wp.launchmode U=0 sz=1}
      * Hist #0: ActivityRecord{a290650 u0 com.wp.launchmode/.ActivityA t179}

Stack #0:

打开ActivityB
ACTIVITY MANAGER ACTIVITIES (dumpsys activity activities)
Display #0 (activities from top to bottom):
Stack #26:
    Task id #179
    * TaskRecord{5444049 #179 A=com.wp.launchmode U=0 sz=2}
      * Hist #1: ActivityRecord{b807b38 u0 com.wp.launchmode/.ActivityB t179}
      * Hist #0: ActivityRecord{a290650 u0 com.wp.launchmode/.ActivityA t179}

Stack #0:

打开ActivityC
ACTIVITY MANAGER ACTIVITIES (dumpsys activity activities)
Display #0 (activities from top to bottom):
Stack #26:
    Task id #179
    * TaskRecord{5444049 #179 A=com.wp.launchmode U=0 sz=3}
      * Hist #2: ActivityRecord{1925930 u0 com.wp.launchmode/.ActivityC t179}
      * Hist #1: ActivityRecord{b807b38 u0 com.wp.launchmode/.ActivityB t179}
      * Hist #0: ActivityRecord{a290650 u0 com.wp.launchmode/.ActivityA t179}

Stack #0:

打开ActivityD
ACTIVITY MANAGER ACTIVITIES (dumpsys activity activities)
Display #0 (activities from top to bottom):
Stack #26:
    Task id #179
    * TaskRecord{5444049 #179 A=com.wp.launchmode U=0 sz=4}
      * Hist #3: ActivityRecord{4b5831f u0 com.wp.launchmode/.ActivityD t179}
      * Hist #2: ActivityRecord{1925930 u0 com.wp.launchmode/.ActivityC t179}
      * Hist #1: ActivityRecord{b807b38 u0 com.wp.launchmode/.ActivityB t179}
      * Hist #0: ActivityRecord{a290650 u0 com.wp.launchmode/.ActivityA t179}

Stack #0:

打开ActivityA
ACTIVITY MANAGER ACTIVITIES (dumpsys activity activities)
Display #0 (activities from top to bottom):
Stack #26:
    Task id #179
    * TaskRecord{5444049 #179 A=com.wp.launchmode U=0 sz=1}
      * Hist #0: ActivityRecord{a290650 u0 com.wp.launchmode/.ActivityA t179}

Stack #0:

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