问题
Before Android 9 I could bypass android usb host permission confirmation dialog by using root, systemizing my app and using next usb classes https://stackoverflow.com/a/15378118/7767664 https://stackoverflow.com/a/19681849/7767664
But it doesn't work for newest Android version - 9
It throws java.lang.NoSuchMethodError: No interface method grantDevicePermission(Landroid/hardware/usb/UsbDevice;I)V in class Landroid/hardware/usb/IUsbManager; or its super classes (declaration of 'android.hardware.usb.IUsbManager' appears in /system/framework/framework.jar)
fun setUsbPermissionRoot(device: UsbDevice) : Boolean {
if (BuildConfig.DEBUG) Log.i(TAG, "trying set permission")
try {
val pm = App.context.packageManager
val ai = pm.getApplicationInfo(App.context.packageName, 0)
ai?.let {
val b = ServiceManager.getService(Context.USB_SERVICE)
val service = IUsbManager.Stub.asInterface(b)
service.grantDevicePermission(device, it.uid)
try {
service.setDevicePackage(device, App.context.packageName, it.uid)
} catch (e: Exception) {
e.printStackTrace()
}
if (BuildConfig.DEBUG) Log.i(TAG, "permission was set usb device")
return true
}
} catch (e: PackageManager.NameNotFoundException) {
if (BuildConfig.DEBUG) e.printStackTrace()
} catch (e: RemoteException) {
if (BuildConfig.DEBUG) e.printStackTrace()
}
return false
}
Is there any way to make it work on Android 9?
回答1:
We can solve it by entering:
adb shell
su
settings put global hidden_api_policy_pre_p_apps 1
settings put global hidden_api_policy_p_apps 1
Restrictions on non-SDK interfaces (Android 9): https://developer.android.com/distribute/best-practices/develop/restrictions-non-sdk-interfaces
And then grantDevicePermission
method will be available again through reflection on Android 9:
public static boolean grantAutomaticUsbPermissionRoot(Context context, UsbDevice usbDevice) {
try {
PackageManager pkgManager = context.getPackageManager();
ApplicationInfo appInfo = pkgManager.getApplicationInfo(context.getPackageName(), PackageManager.GET_META_DATA);
Class serviceManagerClass = Class.forName("android.os.ServiceManager");
Method getServiceMethod = serviceManagerClass.getDeclaredMethod("getService", String.class);
getServiceMethod.setAccessible(true);
android.os.IBinder binder = (android.os.IBinder)getServiceMethod.invoke(null, Context.USB_SERVICE);
Class iUsbManagerClass = Class.forName("android.hardware.usb.IUsbManager");
Class stubClass = Class.forName("android.hardware.usb.IUsbManager$Stub");
Method asInterfaceMethod = stubClass.getDeclaredMethod("asInterface", android.os.IBinder.class);
asInterfaceMethod.setAccessible(true);
Object iUsbManager=asInterfaceMethod.invoke(null, binder);
final Method grantDevicePermissionMethod = iUsbManagerClass.getDeclaredMethod("grantDevicePermission", UsbDevice.class, int.class);
grantDevicePermissionMethod.setAccessible(true);
grantDevicePermissionMethod.invoke(iUsbManager, usbDevice,appInfo.uid);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
p.s. you need root of course and systemize your app (move to /system/priv-app/
)
来源:https://stackoverflow.com/questions/57390558/bypass-android-usb-host-permission-confirmation-dialog-on-android-9