看一看当前打开的Activity（下方是mac与linux）

Android还为开发者提供了adb(Android Debug Bridge)，这是非常强大的调试工具。最常用的自然是logcat来显示日志记录。

方法一： 
1、cmd命令中输入：adb shell 进入shell命令模式 
2、shell中输入：logcat | grep ActivityManager 真机运行应用，可以实时 查看当前正在运行的Activity；

I/ActivityManager(  936): START u0 {cmp=com.example.chenzongwen.myapplication/.LeakActivity} from uid 10251 from pid 1630 on display 0
D/ActivityManager(  936): Delay resumeKeyDispatchingLocked() to avoid deadlock.
I/ActivityManager(  936): [AppLaunch] Displayed Displayed com.example.chenzongwen.myapplication/.LeakActivity: +155ms
D/ActivityManager(  936): AP_PROF:AppLaunch_LaunchTime:com.example.chenzongwen.myapplication/.LeakActivity:155:20438126
D/ActivityManager(  936): ACT-IDLE_NOW_MSG from windowsVisible() for idle: ActivityRecord{379aa884 u0 com.example.chenzongwen.myapplication/.LeakActivity t29}

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com.example.chenzongwen.myapplication 为包名 LeakActivity 是当前活动的activity。

方法二： 
1.cmd命令中输入：adb shell dumpsys activity activities 
查看

    Running activities (most recent first):
      TaskRecord{35e0a397 #1 A=com.oppo.launcher U=0 sz=1}
Run #0: ActivityRecord{1adfa134 u0 com.oppo.launcher/.Launcher t1}

    mLastPausedActivity: ActivityRecord{1adfa134 u0 com.oppo.launcher/.Launcher t1}

  mFocusedActivity: ActivityRecord{379aa884 u0 com.example.chenzongwen.myapplication/.LeakActivity t29}
  mFocusedStack=ActivityStack{47d984 stackId=1, 3 tasks} mLastFocusedStack=ActivityStack{47d984 stackId=1, 3 tasks}
  mSleepTimeout=false
  mCurTaskId=29
  mUserStackInFront={}
  mActivityContainers={0=ActivtyContainer{0}A, 1=ActivtyContainer{1}A}

[BMW]FLOATING STACK INFO:
Display Info:ActivityDisplay={0 numStacks=2 numFrontFloatStacks=0 numBackFloatStacks=0}
Front Float Stacks(from top to bottom):
Back Float Stacks:

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com.example.chenzongwen.myapplication 为包名 LeakActivity 是当前活动的activity。

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