1.冷启动

冷启动：后台没有该应用程序的进程，应用首次启动。

获取package名

打开APP，然后使用命令

adb shell dumpsys activity | grep mFocusedActivity

adb shell logcat | grep START

adb shell logcat | grep cmp=

adb shell dumpsys activity | findstr mFocusedActivity
  mFocusedActivity: ActivityRecord{6468932 u0 com.android.contacts/.activities.PeopleActivity t156}

adb shell logcat | findstr START
03-09 22:45:57.809  1637  2939 E ActivityTaskManager: START {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10600000 hwFlg=0x10 cmp=com.lingkou.leetcode/com.lingkou.main.splash.SplashActivity bnds=[648,1619][858,1968] (has extras)} result: 2

启动APP：

adb shell am start -W -n <package/activity>

adb shell am start -W -n com.android.contacts/.activities.PeopleActivity

Starting: Intent { cmp=com.android.contacts/.activities.PeopleActivity }
Status: ok
Activity: com.android.contacts/.activities.PeopleActivity
ThisTime: 334
TotalTime: 334
WaitTime: 375
Complete

停止APP：

adb shell am force-stop package

2.热启动

热启动：后台已经有了该程序的进程（返回，home键退出让应用程序在后台继续执行）当再次点开APP马上能够恢复到上次使用的状态，不需要再回到手机的首页打开应用程序。

adb shell input keyevent 3（home键）

adb shell input keyevent 4（返回）

参考：

https://blog.csdn.net/gufenchen/article/details/91410667

https://www.cnblogs.com/zhangwei-qianqian/p/11887627.html

https://blog.csdn.net/h_bpdwn/article/details/91425599