问题描述：
最近做车载项目，要调试一些硬件设备，在Win10系统下、Android Studio直接运行项目代码、install至硬件设备上，报如下错误：
又用了ADB命令手动安装apk，还是报错，如下：
即：
E:\>adb install QQM.apk
Performing Streamed Install
adb: failed to run abb_exec. Error: closed
adb: connect error for write: closed解决：
adb shell 中运行
setprop persist.sv.enable_adb_install 1
如下：在设备上安装QQ音乐apk 。
E:\>adb shell
error: closed
E:\>adb devices
List of devices attached
E:\>adb kill-server
E:\>adb start-server
* daemon not running; starting now at tcp:5037
* daemon started successfully
E:\>adb shell
adb.exe: no devices/emulators found
E:\>adb devices
List of devices attached
ad039675 device
E:\>adb shell ####看这里
msmnile_gvmq:/ $ setprop persist.sv.enable_adb_install 1 ####看这里
msmnile_gvmq:/ $ exit
E:\>adb install QQM.apk
Performing Streamed Install
Success原因：设备上的adb install开关没打开，导致apk无法install。用命令打开install权限即可。