I'm trying to get a simple accessibility service, like Google's Voice Access or Button Mapper to work on an LG Exalt LTE, running a stripped down version of Marshmellow. The stock is missing many UI components, including system Accessibility Settings, which are normally used for turning accessibility services on or off. I would like to know if it is possible to compensate for lack of UI with ADB. I've tried the following: Install the app (Take Button Mapper for example), Its manifest declares a few permissions, that i've granted, say:
<uses-permission name="android.permission.WRITE_SECURE_SETTINGS" />
was granted
adb shell pm grant package.name.here android.permission.WRITE_SECURE_SETTINGS
I even gave it
android.permission.WRITE_SECURE_SETTINGS
even though its not declared in the permissions list in the top of the manifest.
I get this error:
Operation not allowed: java.lang.SecurityException: Package package.name.here has not requested permission android.permission.BIND_ACCESSIBILITY_SERVICE
However, It is declared in the manifest here though:
<service name="a.i" permission="android.permission.BIND_ACCESSIBILITY_SERVICE" stopWithTask="true">
<meta-data name="android.accessibilityservice" resource="res/xml/accessibility.xml" />
<intent-filter>
<action name="android.accessibilityservice.AccessibilityService" />
</intent-filter>
</service>
and thats where the problem is.
this is the service itself, and it requires a non-package-wide permission, BIND_ACCESSIBILITY_SERVICE.
if I start it with ADB like this
adb shell am startservice -n package.name.here/a.i
I get and error
Error: Requires permission android.permission.BIND_ACCESSIBILITY_SERVICE
even though I already granted the permission to the package.
I've even tried adb shell settings put secure enabled_accessibility_services package.name.here/.a.i, but still get the same error.
Bottom line:
How do I start a service and grant permissions to that service with ADB? To be clear. I already know that I can use adb shell pm grant to grant a permission to the whole package, but in this case it is a permission not required by the whole package it is declared in a specific component and I am at loss as to how to launch the component with the permissions it requires through ADB.
pmlike permissions with dangerous protection level. But it can be granted to packages asking for it using:appops set <pkg> BIND_ACCESSIBILITY_SERVICE allow. If only a component (service) is asking for it, what you mentioned should work:settings put secure enabled_accessibility_services <pkg1>/<service 1>:<pkg2>/<service2>:.... That's what happens when you allow apps from GUI settings.$ adb shell am kill flar2.homebutton $ adb shell appops set flar2.homebutton BIND_ACCESSIBILITY_SERVICE allow Error: Unknown operation string: BIND_ACCESSIBILITY_SERVICE $ adb shell settings put secure enabled_accessibility_services flar2.homebutton/a.i $ adb shell am startservice -n flar2.homebutton/a.i Starting service: Intent { cmp=flar2.homebutton/a.i } Error: Requires permission android.permission.BIND_ACCESSIBILITY_SERVICE