Android 系统自动安装app

#!/system/bin/sh  

init_dev(){
    # init work
    chmod 666 /dev/dgard0
    chmod 666 /dev/ttyS0
    chmod 666 /dev/ttyS5
    chmod 666 /dev/ttyS7
    chmod 666 /dev/tamper0
    chmod 666 /dev/magnetometer0
    chmod 666 /dev/doorbutton0
    chmod 666 /dev/elevator0
    chmod 666 /dev/microwave0
    chmod 666 /dev/lightdetector0
    chmod 666 /dev/gpio0
    chmod 666 /dev/firealarm0
    chmod 666 /dev/lightdetect_threshold
    #chmod 666 /dev/camera_restart0
    chmod 666 /dev/wrtrelay0
    chmod 666 /dev/b2-pwm0
    echo peripheral > /sys/devices/platform/fe8a0000.usb2-phy/otg_mode
    
}

FLAG=$(getprop persist.sys.first_run)  
echo "install robot bin start"
#FLAG=$?  
if [ 1 -eq $FLAG ];then  
    setprop persist.sys.first_run 0  

    echo "will reboot after install rebot.apk"
    #tar -xzvf /system/user/enjoylink.tgz -C /data/
    sync

    echo "install robot.apk"
    pm install /system/user/app/xx.apk
    sync
    sleep 1
    init_dev
    am start -n com/.view.main.MainActivity
    #reboot
fi 

while true
do
    BOOTCOMPLETED=`getprop sys.bootstat.first_boot_completed`
    echo check BOOTCOMPLETED=$BOOTCOMPLETED
    if [ $BOOTCOMPLETED == "1" ] ; then
        init_dev
        sleep 1
        echo to start home launcher ...
        input keyevent 3
        echo done.
        exit 0
    fi
    echo do nothing, but sleep ...
    sleep 1
done

###sleep 120
###PSAPP=`ps -ef | grep com.gemdale.gempad | wc -l`
###if [ $PSAPP -eq 1 ];then
###    input keyevent 3
###fi