检测当前手机正在运行的APP

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import re #一定要引入，否则不提示错误，但找不到目标
def jiance(sjh):

    aakk="adb -s {0} shell dumpsys activity activities".format(sjh)

    aak="adb -s {0} shell am start -n com.kuaishou.nebula/com.yxcorp.gifshow.HomeActivity".format(sjh)

    zh=[]

    lx=[]

    ap=0

    p = subprocess.Popen(aakk, shell=True, stdout=subprocess.PIPE)

    out, err = p.communicate()

    time.sleep(4)

    #print(out.splitlines()[24:27])

    for line in out.splitlines():

        aa=line.decode("utf-8")

        #print(len(aa))

        try:

            ab=re.findall('cmp=com.(.*?)/',aa)

            #al=ab[0]+'.HomeActivity'

            if len(ab)>0:

                break

        except:

            continue

    try:

        aa=ab[0]

    except:

        ap=1

    if ap==0:

        if aa=="kuaishou.nebula":

            print("已经运行")

            pass

        else:

            process = subprocess.Popen(aak,shell=True)

            time.sleep(2)

            print("已经重新打开了")

    else:

        print("没有得到ab")

aakk="adb devices"

aakk="adb shell dumpsys window w |findstr \/ |findstr name="

aakk="adb shell dumpsys activity activities"

def jiance():

    zh=[]

    lx=[]

    p = subprocess.Popen(aakk, shell=True, stdout=subprocess.PIPE)

    out, err = p.communicate()

    #print(out.splitlines()[24:27])

    for line in out.splitlines():

        aa=line.decode("utf-8")

        #print(len(aa))

        try:

            ab=re.findall('cmp=com.(.*?)/',aa)

            #al=ab[0]+'.HomeActivity'

            if len(ab)>0:

                return ab[0]

                break

        except:

            print("没有")

aa=jiance()

print(aa)  
运行快手：

adb shell am start -n com.kuaishou.nebula/com.yxcorp.gifshow.HomeActivity
adb shell am start -n com.kuaishou.nebula/com.yxcorp.gifshow.activity.UriRouterActivity