diff --git a/src/com/android/launcher3/pm/InstallSessionHelper.java b/src/com/android/launcher3/pm/InstallSessionHelper.java
index ab35bd6..4b86f65 100644
--- a/src/com/android/launcher3/pm/InstallSessionHelper.java
+++ b/src/com/android/launcher3/pm/InstallSessionHelper.java
@@ -17,7 +17,6 @@
 package com.android.launcher3.pm;
 
 import static com.android.launcher3.Utilities.getPrefs;
-import static com.android.launcher3.util.Executors.MODEL_EXECUTOR;
 
 import android.content.Context;
 import android.content.pm.ApplicationInfo;
@@ -25,7 +24,6 @@
 import android.content.pm.PackageInstaller;
 import android.content.pm.PackageInstaller.SessionInfo;
 import android.content.pm.PackageManager;
-import android.os.Build;
 import android.os.Process;
 import android.os.UserHandle;
 import android.text.TextUtils;
@@ -238,24 +236,12 @@
     }
 
     public InstallSessionTracker registerInstallTracker(InstallSessionTracker.Callback callback) {
-        InstallSessionTracker tracker = new InstallSessionTracker(this, callback);
-
-        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) {
-            mInstaller.registerSessionCallback(tracker, MODEL_EXECUTOR.getHandler());
-        } else {
-            mLauncherApps.registerPackageInstallerSessionCallback(MODEL_EXECUTOR, tracker);
-        }
+        InstallSessionTracker tracker = new InstallSessionTracker(
+                this, callback, mInstaller, mLauncherApps);
+        tracker.register();
         return tracker;
     }
 
-    void unregister(InstallSessionTracker tracker) {
-        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) {
-            mInstaller.unregisterSessionCallback(tracker);
-        } else {
-            mLauncherApps.unregisterPackageInstallerSessionCallback(tracker);
-        }
-    }
-
     public static UserHandle getUserHandle(SessionInfo info) {
         return Utilities.ATLEAST_Q ? info.getUser() : Process.myUserHandle();
     }
diff --git a/src/com/android/launcher3/pm/InstallSessionTracker.java b/src/com/android/launcher3/pm/InstallSessionTracker.java
index b0b907a..e1b3c1a 100644
--- a/src/com/android/launcher3/pm/InstallSessionTracker.java
+++ b/src/com/android/launcher3/pm/InstallSessionTracker.java
@@ -18,9 +18,12 @@
 import static com.android.launcher3.pm.InstallSessionHelper.getUserHandle;
 import static com.android.launcher3.pm.PackageInstallInfo.STATUS_FAILED;
 import static com.android.launcher3.pm.PackageInstallInfo.STATUS_INSTALLED;
+import static com.android.launcher3.util.Executors.MODEL_EXECUTOR;
 
+import android.content.pm.LauncherApps;
 import android.content.pm.PackageInstaller;
 import android.content.pm.PackageInstaller.SessionInfo;
+import android.os.Build;
 import android.os.UserHandle;
 import android.util.SparseArray;
 
@@ -28,35 +31,53 @@
 
 import com.android.launcher3.util.PackageUserKey;
 
+import java.lang.ref.WeakReference;
+
 @WorkerThread
 public class InstallSessionTracker extends PackageInstaller.SessionCallback {
 
     // Lazily initialized
     private SparseArray<PackageUserKey> mActiveSessions = null;
 
-    private final InstallSessionHelper mInstallerCompat;
-    private final Callback mCallback;
+    private final WeakReference<InstallSessionHelper> mWeakHelper;
+    private final WeakReference<Callback> mWeakCallback;
+    private final PackageInstaller mInstaller;
+    private final LauncherApps mLauncherApps;
 
-    InstallSessionTracker(InstallSessionHelper installerCompat, Callback callback) {
-        mInstallerCompat = installerCompat;
-        mCallback = callback;
+
+    InstallSessionTracker(InstallSessionHelper installerCompat, Callback callback,
+            PackageInstaller installer, LauncherApps launcherApps) {
+        mWeakHelper = new WeakReference<>(installerCompat);
+        mWeakCallback = new WeakReference<>(callback);
+        mInstaller = installer;
+        mLauncherApps = launcherApps;
     }
 
     @Override
     public void onCreated(int sessionId) {
-        SessionInfo sessionInfo = pushSessionDisplayToLauncher(sessionId);
+        InstallSessionHelper helper = mWeakHelper.get();
+        Callback callback = mWeakCallback.get();
+        if (callback == null || helper == null) {
+            return;
+        }
+        SessionInfo sessionInfo = pushSessionDisplayToLauncher(sessionId, helper, callback);
         if (sessionInfo != null) {
-            mCallback.onInstallSessionCreated(PackageInstallInfo.fromInstallingState(sessionInfo));
+            callback.onInstallSessionCreated(PackageInstallInfo.fromInstallingState(sessionInfo));
         }
 
-        mInstallerCompat.tryQueuePromiseAppIcon(sessionInfo);
+        helper.tryQueuePromiseAppIcon(sessionInfo);
     }
 
     @Override
     public void onFinished(int sessionId, boolean success) {
+        InstallSessionHelper helper = mWeakHelper.get();
+        Callback callback = mWeakCallback.get();
+        if (callback == null || helper == null) {
+            return;
+        }
         // For a finished session, we can't get the session info. So use the
         // packageName from our local cache.
-        SparseArray<PackageUserKey> activeSessions = getActiveSessionMap();
+        SparseArray<PackageUserKey> activeSessions = getActiveSessionMap(helper);
         PackageUserKey key = activeSessions.get(sessionId);
         activeSessions.remove(sessionId);
 
@@ -65,21 +86,26 @@
             PackageInstallInfo info = PackageInstallInfo.fromState(
                     success ? STATUS_INSTALLED : STATUS_FAILED,
                     packageName, key.mUser);
-            mCallback.onPackageStateChanged(info);
+            callback.onPackageStateChanged(info);
 
-            if (!success && mInstallerCompat.promiseIconAddedForId(sessionId)) {
-                mCallback.onSessionFailure(packageName, key.mUser);
+            if (!success && helper.promiseIconAddedForId(sessionId)) {
+                callback.onSessionFailure(packageName, key.mUser);
                 // If it is successful, the id is removed in the the package added flow.
-                mInstallerCompat.removePromiseIconId(sessionId);
+                helper.removePromiseIconId(sessionId);
             }
         }
     }
 
     @Override
     public void onProgressChanged(int sessionId, float progress) {
-        SessionInfo session = mInstallerCompat.getVerifiedSessionInfo(sessionId);
+        InstallSessionHelper helper = mWeakHelper.get();
+        Callback callback = mWeakCallback.get();
+        if (callback == null || helper == null) {
+            return;
+        }
+        SessionInfo session = helper.getVerifiedSessionInfo(sessionId);
         if (session != null && session.getAppPackageName() != null) {
-            mCallback.onPackageStateChanged(PackageInstallInfo.fromInstallingState(session));
+            callback.onPackageStateChanged(PackageInstallInfo.fromInstallingState(session));
         }
     }
 
@@ -88,35 +114,53 @@
 
     @Override
     public void onBadgingChanged(int sessionId) {
-        SessionInfo sessionInfo = pushSessionDisplayToLauncher(sessionId);
+        InstallSessionHelper helper = mWeakHelper.get();
+        Callback callback = mWeakCallback.get();
+        if (callback == null || helper == null) {
+            return;
+        }
+        SessionInfo sessionInfo = pushSessionDisplayToLauncher(sessionId, helper, callback);
         if (sessionInfo != null) {
-            mInstallerCompat.tryQueuePromiseAppIcon(sessionInfo);
+            helper.tryQueuePromiseAppIcon(sessionInfo);
         }
     }
 
-    private SessionInfo pushSessionDisplayToLauncher(int sessionId) {
-        SessionInfo session = mInstallerCompat.getVerifiedSessionInfo(sessionId);
+    private SessionInfo pushSessionDisplayToLauncher(
+            int sessionId, InstallSessionHelper helper, Callback callback) {
+        SessionInfo session = helper.getVerifiedSessionInfo(sessionId);
         if (session != null && session.getAppPackageName() != null) {
             PackageUserKey key =
                     new PackageUserKey(session.getAppPackageName(), getUserHandle(session));
-            getActiveSessionMap().put(session.getSessionId(), key);
-            mCallback.onUpdateSessionDisplay(key, session);
+            getActiveSessionMap(helper).put(session.getSessionId(), key);
+            callback.onUpdateSessionDisplay(key, session);
             return session;
         }
         return null;
     }
 
-    private SparseArray<PackageUserKey> getActiveSessionMap() {
+    private SparseArray<PackageUserKey> getActiveSessionMap(InstallSessionHelper helper) {
         if (mActiveSessions == null) {
             mActiveSessions = new SparseArray<>();
-            mInstallerCompat.getActiveSessions().forEach(
+            helper.getActiveSessions().forEach(
                     (key, si) -> mActiveSessions.put(si.getSessionId(), key));
         }
         return mActiveSessions;
     }
 
+    void register() {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) {
+            mInstaller.registerSessionCallback(this, MODEL_EXECUTOR.getHandler());
+        } else {
+            mLauncherApps.registerPackageInstallerSessionCallback(MODEL_EXECUTOR, this);
+        }
+    }
+
     public void unregister() {
-        mInstallerCompat.unregister(this);
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) {
+            mInstaller.unregisterSessionCallback(this);
+        } else {
+            mLauncherApps.unregisterPackageInstallerSessionCallback(this);
+        }
     }
 
     public interface Callback {
diff --git a/tests/src/com/android/launcher3/util/LauncherModelHelper.java b/tests/src/com/android/launcher3/util/LauncherModelHelper.java
index c9b63ae..59966ee 100644
--- a/tests/src/com/android/launcher3/util/LauncherModelHelper.java
+++ b/tests/src/com/android/launcher3/util/LauncherModelHelper.java
@@ -66,7 +66,6 @@
 import com.android.launcher3.pm.UserCache;
 import com.android.launcher3.testing.TestInformationProvider;
 import com.android.launcher3.uioverrides.plugins.PluginManagerWrapper;
-import com.android.launcher3.util.MainThreadInitializedObject.ObjectProvider;
 import com.android.launcher3.util.MainThreadInitializedObject.SandboxContext;
 import com.android.launcher3.widget.custom.CustomWidgetManager;
 
@@ -533,12 +532,6 @@
             super.onDestroy();
         }
 
-
-        @Override
-        protected <T> T createObject(ObjectProvider<T> provider) {
-            return spy(provider.get(this));
-        }
-
         @Override
         public PackageManager getPackageManager() {
             return mPm;