Rk3399 multi users on Android 7 Image

dbe_dev

Have tried setup a multi user environment for the Android 7 image for the rk3399. I want to make sure there is a locked administrator user and a user that is only allowed to run a few apps.

I can add users and set restrictive rights in the settings app but I cannot activate the lock screen for any of the user to become effective nor limit the apps they access.

Also setting a different wallpaper does not seem to work.

Any advice tricks on what to install or configure for a build ?

Also the battery always indicates 50% which prohibits file system encryption to be initiated. Where can this be changed ?

isle

have no  experience with that

dbe_dev

This is what I found so far:

The lock screen is apparently bypassed by default for box configurations as used by the firefly AOSP build. App limiting does work  for some apps but not for the pre-installed rk apps.

Locally did the following to get the lock screen (re)enabled.

{{{
diff --git a/frameworks/base/services/core/java/com/android/server/am/ActivityRecord.java b/frameworks/base/services/core/java/com/android/server/am/ActivityRecord.java
index bbf7dc8..4c758c7 100644
--- a/frameworks/base/services/core/java/com/android/server/am/ActivityRecord.java
+++ b/frameworks/base/services/core/java/com/android/server/am/ActivityRecord.java
@@ -1249,16 +1249,18 @@ final class ActivityRecord {
     }

     void windowsDrawnLocked() {
+// revert to stock android to have keyguard
        //Launcher is drawn completed,box can exit bootanim, other product  wait for keygurad drawn
-        if(shortComponentName!=null && !shortComponentName.contains(".FallbackHome") && !"1".equals(SystemProperties.get("service.bootanim.exit")))
-        {
-                if(!"tablet".equals(SystemProperties.get("ro.target.product")))
-                {
-                        SystemProperties.set("service.bootanim.exit", "1");       
-                        SystemService.stop("bootanim");
-                        Log.d("xzj","----not tablet,launcher drawn done,exit bootanim----");
-                }
-        }
+//        if(shortComponentName!=null && !shortComponentName.contains(".FallbackHome") && !"1".equals(SystemProperties.get("service.bootanim.exit")))
+//        {
+//
+//                if(!"tablet".equals(SystemProperties.get("ro.target.product")))
+//                {
+//                        SystemProperties.set("service.bootanim.exit", "1");       
+//                        SystemService.stop("bootanim");
+//                        Log.d("xzj","----not tablet,launcher drawn done,exit bootanim----");
+//                }
+//        }
         mStackSupervisor.mActivityMetricsLogger.notifyWindowsDrawn();
         if (displayStartTime != 0) {
             reportLaunchTimeLocked(SystemClock.uptimeMillis());
diff --git a/frameworks/base/services/core/java/com/android/server/policy/keyguard/KeyguardServiceDelegate.java b/frameworks/base/services/core/java/com/android/server/policy/keyguard/KeyguardServiceDelegate.java
index da8c591..a5d1513 100644
--- a/frameworks/base/services/core/java/com/android/server/policy/keyguard/KeyguardServiceDelegate.java
+++ b/frameworks/base/services/core/java/com/android/server/policy/keyguard/KeyguardServiceDelegate.java
@@ -144,8 +144,8 @@ public class KeyguardServiceDelegate {
                 resources.getString(com.android.internal.R.string.config_keyguardComponent));
         intent.addFlags(Intent.FLAG_DEBUG_TRIAGED_MISSING);
         intent.setComponent(keyguardComponent);
-
-        boolean isBox = isBox();
+        // Revert to default android as want the lock screen
+        boolean isBox = false;//isBox();

         if (isBox || !context.bindServiceAsUser(intent, mKeyguardConnection,
                 Context.BIND_AUTO_CREATE, mScrimHandler, UserHandle.SYSTEM)) {
}}}

The ro.rk.install_non_market_apps being set to true result in an restricted profile always being allowed to install apk's

Setting a different wallpaper only seems to work through modifing the wallpaper file with adb for now.

Battery level can be adjusted using adb  "adb shell dumpsys battery set level 99"