Launcher3 multi-profile support

Use LauncherApps API and badging APIs instead of PackageManager.
With compatability layer that uses PackageManager pre L.

Adds support to show apps from current user and any managed profiles.

Background: Managed profiles are user sandboxes that are visible from
the primary user and can be launched as if they are a part of this user.
A launcher should now be capable of listing apps from this user as well
as related profiles of this user.

Launching of activities is now via the LauncherApps interface, to allow
for cross-profile app launching. Only activities with category LAUNCHER
can be added as a shortcut on the workspace for a managed profile.

Widgets and non-application shortcuts are only supported for the
current profile. Widgets from the managed profile are not available.

Change-Id: I5f396b1bf7f91ad91a5710ea4a0fd14573972eb9

12 files changed, 1120 insertions, 0 deletions

diff --git a/src/com/android/launcher3/compat/LauncherActivityInfoCompat.java b/src/com/android/launcher3/compat/LauncherActivityInfoCompat.java
new file mode 100644
index 000000000..3ba93ea91
--- /dev/null
+++ b/src/com/android/launcher3/compat/LauncherActivityInfoCompat.java
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.compat;
+
+import android.content.ComponentName;
+import android.graphics.drawable.Drawable;
+
+public abstract class LauncherActivityInfoCompat {
+
+    LauncherActivityInfoCompat() {
+    }
+
+    public abstract ComponentName getComponentName();
+    public abstract UserHandleCompat getUser();
+    public abstract CharSequence getLabel();
+    public abstract Drawable getIcon(int density);
+    public abstract int getApplicationFlags();
+    public abstract long getFirstInstallTime();
+    public abstract Drawable getBadgedIcon(int density);
+}
diff --git a/src/com/android/launcher3/compat/LauncherActivityInfoCompatV16.java b/src/com/android/launcher3/compat/LauncherActivityInfoCompatV16.java
new file mode 100644
index 000000000..9b9384d83
--- /dev/null
+++ b/src/com/android/launcher3/compat/LauncherActivityInfoCompatV16.java
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.compat;
+
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.pm.PackageManager.NameNotFoundException;
+import android.content.pm.ActivityInfo;
+import android.content.pm.PackageManager;
+import android.content.pm.PackageInfo;
+import android.content.pm.ResolveInfo;
+import android.content.res.Resources;
+import android.graphics.drawable.Drawable;
+
+
+public class LauncherActivityInfoCompatV16 extends LauncherActivityInfoCompat {
+    private ActivityInfo mActivityInfo;
+    private ComponentName mComponentName;
+    private PackageManager mPm;
+
+    LauncherActivityInfoCompatV16(Context context, ResolveInfo info) {
+        super();
+        this.mActivityInfo = info.activityInfo;
+        mComponentName = new ComponentName(mActivityInfo.packageName, mActivityInfo.name);
+        mPm = context.getPackageManager();
+    }
+
+    public ComponentName getComponentName() {
+        return mComponentName;
+    }
+
+    public UserHandleCompat getUser() {
+        return UserHandleCompat.myUserHandle();
+    }
+
+    public CharSequence getLabel() {
+        return mActivityInfo.loadLabel(mPm);
+    }
+
+    public Drawable getIcon(int density) {
+        Drawable d = null;
+        if (mActivityInfo.getIconResource() != 0) {
+            Resources resources;
+            try {
+                resources = mPm.getResourcesForApplication(mActivityInfo.packageName);
+            } catch (PackageManager.NameNotFoundException e) {
+                resources = null;
+            }
+            if (resources != null) {
+                d = resources.getDrawableForDensity(mActivityInfo.getIconResource(), density);
+            }
+        }
+        if (d == null) {
+            Resources resources = Resources.getSystem();
+            d = resources.getDrawableForDensity(android.R.mipmap.sym_def_app_icon, density);
+        }
+        return d;
+    }
+
+    public int getApplicationFlags() {
+        return mActivityInfo.applicationInfo.flags;
+    }
+
+    public long getFirstInstallTime() {
+        try {
+            PackageInfo info = mPm.getPackageInfo(mActivityInfo.packageName, 0);
+            return info != null ? info.firstInstallTime : 0;
+        } catch (NameNotFoundException e) {
+            return 0;
+        }
+    }
+
+    public String getName() {
+        return mActivityInfo.name;
+    }
+
+    public Drawable getBadgedIcon(int density) {
+        return getIcon(density);
+    }
+}
diff --git a/src/com/android/launcher3/compat/LauncherActivityInfoCompatVL.java b/src/com/android/launcher3/compat/LauncherActivityInfoCompatVL.java
new file mode 100644
index 000000000..76125bd6a
--- /dev/null
+++ b/src/com/android/launcher3/compat/LauncherActivityInfoCompatVL.java
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.compat;
+
+import android.content.ComponentName;
+import android.graphics.drawable.Drawable;
+import android.os.UserHandle;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+public class LauncherActivityInfoCompatVL extends LauncherActivityInfoCompat {
+    private Object mLauncherActivityInfo;
+    private Class mLauncherActivityInfoClass;
+    private Method mGetComponentName;
+    private Method mGetUser;
+    private Method mGetLabel;
+    private Method mGetIcon;
+    private Method mGetApplicationFlags;
+    private Method mGetFirstInstallTime;
+    private Method mGetBadgedIcon;
+
+    LauncherActivityInfoCompatVL(Object launcherActivityInfo) {
+        super();
+        mLauncherActivityInfo = launcherActivityInfo;
+        mLauncherActivityInfoClass = ReflectUtils.getClassForName(
+                "android.content.pm.LauncherActivityInfo");
+        mGetComponentName = ReflectUtils.getMethod(mLauncherActivityInfoClass, "getComponentName");
+        mGetUser = ReflectUtils.getMethod(mLauncherActivityInfoClass, "getUser");
+        mGetLabel = ReflectUtils.getMethod(mLauncherActivityInfoClass, "getLabel");
+        mGetIcon = ReflectUtils.getMethod(mLauncherActivityInfoClass, "getIcon", int.class);
+        mGetApplicationFlags = ReflectUtils.getMethod(mLauncherActivityInfoClass,
+                "getApplicationFlags");
+        mGetFirstInstallTime = ReflectUtils.getMethod(mLauncherActivityInfoClass,
+                "getFirstInstallTime");
+        mGetBadgedIcon = ReflectUtils.getMethod(mLauncherActivityInfoClass, "getBadgedIcon",
+                int.class);
+    }
+
+    public ComponentName getComponentName() {
+        return (ComponentName) ReflectUtils.invokeMethod(mLauncherActivityInfo, mGetComponentName);
+    }
+
+    public UserHandleCompat getUser() {
+        return UserHandleCompat.fromUser((UserHandle) ReflectUtils.invokeMethod(
+                        mLauncherActivityInfo, mGetUser));
+    }
+
+    public CharSequence getLabel() {
+        return (CharSequence) ReflectUtils.invokeMethod(mLauncherActivityInfo, mGetLabel);
+    }
+
+    public Drawable getIcon(int density) {
+        return (Drawable) ReflectUtils.invokeMethod(mLauncherActivityInfo, mGetIcon, density);
+    }
+
+    public int getApplicationFlags() {
+        return (Integer) ReflectUtils.invokeMethod(mLauncherActivityInfo, mGetApplicationFlags);
+    }
+
+    public long getFirstInstallTime() {
+        return (Long) ReflectUtils.invokeMethod(mLauncherActivityInfo, mGetFirstInstallTime);
+    }
+
+    public Drawable getBadgedIcon(int density) {
+        return (Drawable) ReflectUtils.invokeMethod(mLauncherActivityInfo, mGetBadgedIcon, density);
+    }
+}
diff --git a/src/com/android/launcher3/compat/LauncherAppsCompat.java b/src/com/android/launcher3/compat/LauncherAppsCompat.java
new file mode 100644
index 000000000..59ee45c2c
--- /dev/null
+++ b/src/com/android/launcher3/compat/LauncherAppsCompat.java
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.compat;
+
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.graphics.Rect;
+import android.graphics.drawable.Drawable;
+import android.os.Build;
+import android.os.Bundle;
+import android.os.UserHandle;
+import android.os.UserManager;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public abstract class LauncherAppsCompat {
+
+    public interface OnAppsChangedListenerCompat {
+        void onPackageRemoved(UserHandleCompat user, String packageName);
+        void onPackageAdded(UserHandleCompat user, String packageName);
+        void onPackageChanged(UserHandleCompat user, String packageName);
+        void onPackagesAvailable(UserHandleCompat user, String[] packageNames, boolean replacing);
+        void onPackagesUnavailable(UserHandleCompat user, String[] packageNames, boolean replacing);
+    }
+
+    protected LauncherAppsCompat() {
+    }
+
+    public static LauncherAppsCompat getInstance(Context context) {
+        // TODO change this to use api version once L gets an API number.
+        if ("L".equals(Build.VERSION.CODENAME)) {
+            Object launcherApps = context.getSystemService("launcherapps");
+            if (launcherApps != null) {
+                LauncherAppsCompatVL compat = LauncherAppsCompatVL.build(context, launcherApps);
+                if (compat != null) {
+                    return compat;
+                }
+            }
+        }
+        // Pre L or lunacher apps service not running, or reflection failed to find something.
+        return new LauncherAppsCompatV16(context);
+    }
+
+    public abstract List<LauncherActivityInfoCompat> getActivityList(String packageName,
+            UserHandleCompat user);
+    public abstract LauncherActivityInfoCompat resolveActivity(Intent intent,
+            UserHandleCompat user);
+    public abstract void startActivityForProfile(ComponentName component, Rect sourceBounds,
+            Bundle opts, UserHandleCompat user);
+    public abstract void addOnAppsChangedListener(OnAppsChangedListenerCompat listener);
+    public abstract void removeOnAppsChangedListener(OnAppsChangedListenerCompat listener);
+    public abstract boolean isPackageEnabledForProfile(String packageName, UserHandleCompat user);
+    public abstract boolean isActivityEnabledForProfile(ComponentName component,
+            UserHandleCompat user);
+}
\ No newline at end of file
diff --git a/src/com/android/launcher3/compat/LauncherAppsCompatV16.java b/src/com/android/launcher3/compat/LauncherAppsCompatV16.java
new file mode 100644
index 000000000..c739eb9d2
--- /dev/null
+++ b/src/com/android/launcher3/compat/LauncherAppsCompatV16.java
@@ -0,0 +1,191 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.compat;
+
+import android.content.BroadcastReceiver;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.content.pm.ActivityInfo;
+import android.content.pm.PackageManager;
+import android.content.pm.PackageManager.NameNotFoundException;
+import android.content.pm.PackageInfo;
+import android.content.pm.ResolveInfo;
+import android.graphics.Rect;
+import android.os.Build;
+import android.os.Bundle;
+import android.os.UserHandle;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+public class LauncherAppsCompatV16 extends LauncherAppsCompat {
+
+    private PackageManager mPm;
+    private Context mContext;
+    private List<OnAppsChangedListenerCompat> mListeners
+            = new ArrayList<OnAppsChangedListenerCompat>();
+    private PackageMonitor mPackageMonitor;
+
+    LauncherAppsCompatV16(Context context) {
+        mPm = context.getPackageManager();
+        mContext = context;
+        mPackageMonitor = new PackageMonitor();
+   }
+
+    public List<LauncherActivityInfoCompat> getActivityList(String packageName,
+            UserHandleCompat user) {
+        final Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
+        mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
+        mainIntent.setPackage(packageName);
+        List<ResolveInfo> infos = mPm.queryIntentActivities(mainIntent, 0);
+        List<LauncherActivityInfoCompat> list =
+                new ArrayList<LauncherActivityInfoCompat>(infos.size());
+        for (ResolveInfo info : infos) {
+            list.add(new LauncherActivityInfoCompatV16(mContext, info));
+        }
+        return list;
+    }
+
+    public LauncherActivityInfoCompat resolveActivity(Intent intent, UserHandleCompat user) {
+        ResolveInfo info = mPm.resolveActivity(intent, 0);
+        if (info != null) {
+            return new LauncherActivityInfoCompatV16(mContext, info);
+        }
+        return null;
+    }
+
+    public void startActivityForProfile(ComponentName component, Rect sourceBounds,
+            Bundle opts, UserHandleCompat user) {
+        Intent launchIntent = new Intent(Intent.ACTION_MAIN);
+        launchIntent.addCategory(Intent.CATEGORY_LAUNCHER);
+        launchIntent.setComponent(component);
+        launchIntent.setSourceBounds(sourceBounds);
+        launchIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        mContext.startActivity(launchIntent, opts);
+    }
+
+    public synchronized void addOnAppsChangedListener(OnAppsChangedListenerCompat listener) {
+        if (listener != null && !mListeners.contains(listener)) {
+            mListeners.add(listener);
+            if (mListeners.size() == 1) {
+                registerForPackageIntents();
+            }
+        }
+    }
+
+    public synchronized void removeOnAppsChangedListener(OnAppsChangedListenerCompat listener) {
+        mListeners.remove(listener);
+        if (mListeners.size() == 0) {
+            unregisterForPackageIntents();
+        }
+    }
+
+    public boolean isPackageEnabledForProfile(String packageName, UserHandleCompat user) {
+        try {
+            PackageInfo info = mPm.getPackageInfo(packageName, 0);
+            return info != null && info.applicationInfo.enabled;
+        } catch (NameNotFoundException e) {
+            return false;
+        }
+    }
+
+    public boolean isActivityEnabledForProfile(ComponentName component, UserHandleCompat user) {
+        try {
+            ActivityInfo info = mPm.getActivityInfo(component, 0);
+            return info != null && info.isEnabled();
+        } catch (NameNotFoundException e) {
+            return false;
+        }
+    }
+
+    private void unregisterForPackageIntents() {
+        mContext.unregisterReceiver(mPackageMonitor);
+    }
+
+    private void registerForPackageIntents() {
+        IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED);
+        filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
+        filter.addAction(Intent.ACTION_PACKAGE_CHANGED);
+        filter.addDataScheme("package");
+        mContext.registerReceiver(mPackageMonitor, filter);
+        filter = new IntentFilter();
+        filter.addAction(Intent.ACTION_EXTERNAL_APPLICATIONS_AVAILABLE);
+        filter.addAction(Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE);
+        mContext.registerReceiver(mPackageMonitor, filter);
+    }
+
+    private synchronized List<OnAppsChangedListenerCompat> getListeners() {
+        return new ArrayList<OnAppsChangedListenerCompat>(mListeners);
+    }
+
+    private class PackageMonitor extends BroadcastReceiver {
+        public void onReceive(Context context, Intent intent) {
+            final String action = intent.getAction();
+            final UserHandleCompat user = UserHandleCompat.myUserHandle();
+
+            if (Intent.ACTION_PACKAGE_CHANGED.equals(action)
+                    || Intent.ACTION_PACKAGE_REMOVED.equals(action)
+                    || Intent.ACTION_PACKAGE_ADDED.equals(action)) {
+                final String packageName = intent.getData().getSchemeSpecificPart();
+                final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false);
+
+                if (packageName == null || packageName.length() == 0) {
+                    // they sent us a bad intent
+                    return;
+                }
+                if (Intent.ACTION_PACKAGE_CHANGED.equals(action)) {
+                    for (OnAppsChangedListenerCompat listener : getListeners()) {
+                        listener.onPackageChanged(user, packageName);
+                    }
+                } else if (Intent.ACTION_PACKAGE_REMOVED.equals(action)) {
+                    if (!replacing) {
+                        for (OnAppsChangedListenerCompat listener : getListeners()) {
+                            listener.onPackageRemoved(user, packageName);
+                        }
+                    }
+                    // else, we are replacing the package, so a PACKAGE_ADDED will be sent
+                    // later, we will update the package at this time
+                } else if (Intent.ACTION_PACKAGE_ADDED.equals(action)) {
+                    if (!replacing) {
+                        for (OnAppsChangedListenerCompat listener : getListeners()) {
+                            listener.onPackageAdded(user, packageName);
+                        }
+                    } else {
+                        for (OnAppsChangedListenerCompat listener : getListeners()) {
+                            listener.onPackageChanged(user, packageName);
+                        }
+                    }
+                }
+            } else if (Intent.ACTION_EXTERNAL_APPLICATIONS_AVAILABLE.equals(action)) {
+                final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false);
+                String[] packages = intent.getStringArrayExtra(Intent.EXTRA_CHANGED_PACKAGE_LIST);
+                for (OnAppsChangedListenerCompat listener : getListeners()) {
+                    listener.onPackagesAvailable(user, packages, replacing);
+                }
+            } else if (Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE.equals(action)) {
+                final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false);
+                String[] packages = intent.getStringArrayExtra(Intent.EXTRA_CHANGED_PACKAGE_LIST);
+                for (OnAppsChangedListenerCompat listener : getListeners()) {
+                    listener.onPackagesUnavailable(user, packages, replacing);
+                }
+            }
+        }
+    }
+}
diff --git a/src/com/android/launcher3/compat/LauncherAppsCompatVL.java b/src/com/android/launcher3/compat/LauncherAppsCompatVL.java
new file mode 100644
index 000000000..c933712a9
--- /dev/null
+++ b/src/com/android/launcher3/compat/LauncherAppsCompatVL.java
@@ -0,0 +1,204 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.compat;
+
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.graphics.Rect;
+import android.os.Build;
+import android.os.Bundle;
+import android.os.UserHandle;
+
+import java.lang.reflect.InvocationHandler;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import java.lang.reflect.Proxy;
+import java.lang.reflect.Method;
+
+public class LauncherAppsCompatVL extends LauncherAppsCompat {
+
+    private Object mLauncherApps;
+    private Class mLauncherAppsClass;
+    private Class mListenerClass;
+    private Method mGetActivityList;
+    private Method mResolveActivity;
+    private Method mStartActivityForProfile;
+    private Method mAddOnAppsChangedListener;
+    private Method mRemoveOnAppsChangedListener;
+    private Method mIsPackageEnabledForProfile;
+    private Method mIsActivityEnabledForProfile;
+
+    private Map<OnAppsChangedListenerCompat, Object> mListeners
+            = new HashMap<OnAppsChangedListenerCompat, Object>();
+
+    static LauncherAppsCompatVL build(Context context, Object launcherApps) {
+        LauncherAppsCompatVL compat = new LauncherAppsCompatVL(context, launcherApps);
+
+        compat.mListenerClass = ReflectUtils.getClassForName(
+                "android.content.pm.LauncherApps$OnAppsChangedListener");
+        compat.mLauncherAppsClass = ReflectUtils.getClassForName("android.content.pm.LauncherApps");
+
+        compat.mGetActivityList = ReflectUtils.getMethod(compat.mLauncherAppsClass,
+                "getActivityList",
+                String.class, UserHandle.class);
+        compat.mResolveActivity = ReflectUtils.getMethod(compat.mLauncherAppsClass,
+                "resolveActivity",
+                Intent.class, UserHandle.class);
+        compat.mStartActivityForProfile = ReflectUtils.getMethod(compat.mLauncherAppsClass,
+                "startActivityForProfile",
+                ComponentName.class, Rect.class, Bundle.class, UserHandle.class);
+        compat.mAddOnAppsChangedListener = ReflectUtils.getMethod(compat.mLauncherAppsClass,
+                "addOnAppsChangedListener", compat.mListenerClass);
+        compat.mRemoveOnAppsChangedListener = ReflectUtils.getMethod(compat.mLauncherAppsClass,
+                "removeOnAppsChangedListener", compat.mListenerClass);
+        compat.mIsPackageEnabledForProfile = ReflectUtils.getMethod(compat.mLauncherAppsClass,
+                "isPackageEnabledForProfile", String.class, UserHandle.class);
+        compat.mIsActivityEnabledForProfile = ReflectUtils.getMethod(compat.mLauncherAppsClass,
+                "isActivityEnabledForProfile", ComponentName.class, UserHandle.class);
+
+        if (compat.mListenerClass != null
+                && compat.mLauncherAppsClass != null
+                && compat.mGetActivityList != null
+                && compat.mResolveActivity != null
+                && compat.mStartActivityForProfile != null
+                && compat.mAddOnAppsChangedListener != null
+                && compat.mRemoveOnAppsChangedListener != null
+                && compat.mIsPackageEnabledForProfile != null
+                && compat.mIsActivityEnabledForProfile != null) {
+            return compat;
+        }
+        return null;
+    }
+
+    private LauncherAppsCompatVL(Context context, Object launcherApps) {
+        super();
+        mLauncherApps = launcherApps;
+    }
+
+    public List<LauncherActivityInfoCompat> getActivityList(String packageName,
+            UserHandleCompat user) {
+        List<Object> list = (List<Object>) ReflectUtils.invokeMethod(mLauncherApps,
+                mGetActivityList, packageName, user.getUser());
+        if (list.size() == 0) {
+            return Collections.EMPTY_LIST;
+        }
+        ArrayList<LauncherActivityInfoCompat> compatList =
+                new ArrayList<LauncherActivityInfoCompat>(list.size());
+        for (Object info : list) {
+            compatList.add(new LauncherActivityInfoCompatVL(info));
+        }
+        return compatList;
+    }
+
+    public LauncherActivityInfoCompat resolveActivity(Intent intent, UserHandleCompat user) {
+        return new LauncherActivityInfoCompatVL(ReflectUtils.invokeMethod(mLauncherApps,
+                        mResolveActivity, intent, user.getUser()));
+    }
+
+    public void startActivityForProfile(ComponentName component, Rect sourceBounds,
+            Bundle opts, UserHandleCompat user) {
+        ReflectUtils.invokeMethod(mLauncherApps, mStartActivityForProfile,
+                component, sourceBounds, opts, user.getUser());
+    }
+
+    public void addOnAppsChangedListener(LauncherAppsCompat.OnAppsChangedListenerCompat listener) {
+        Object wrappedListener = Proxy.newProxyInstance(mListenerClass.getClassLoader(),
+                new Class[]{mListenerClass}, new WrappedListener(listener));
+        synchronized (mListeners) {
+            mListeners.put(listener, wrappedListener);
+        }
+        ReflectUtils.invokeMethod(mLauncherApps, mAddOnAppsChangedListener, wrappedListener);
+    }
+
+    public void removeOnAppsChangedListener(
+            LauncherAppsCompat.OnAppsChangedListenerCompat listener) {
+        Object wrappedListener = null;
+        synchronized (mListeners) {
+            wrappedListener = mListeners.remove(listener);
+        }
+        if (wrappedListener != null) {
+            ReflectUtils.invokeMethod(mLauncherApps, mRemoveOnAppsChangedListener, wrappedListener);
+        }
+    }
+
+    public boolean isPackageEnabledForProfile(String packageName, UserHandleCompat user) {
+        return (Boolean) ReflectUtils.invokeMethod(mLauncherApps, mIsPackageEnabledForProfile,
+                packageName, user.getUser());
+    }
+
+    public boolean isActivityEnabledForProfile(ComponentName component, UserHandleCompat user) {
+        return (Boolean) ReflectUtils.invokeMethod(mLauncherApps, mIsActivityEnabledForProfile,
+                component, user.getUser());
+    }
+
+    private static class WrappedListener implements InvocationHandler {
+        private LauncherAppsCompat.OnAppsChangedListenerCompat mListener;
+
+        public WrappedListener(LauncherAppsCompat.OnAppsChangedListenerCompat listener) {
+            mListener = listener;
+        }
+
+        public Object invoke(Object proxy, Method m, Object[] args) throws Throwable {
+            try {
+                String methodName = m.getName();
+                if ("onPackageRemoved".equals(methodName)) {
+                    onPackageRemoved((UserHandle) args[0], (String) args[1]);
+                } else if ("onPackageAdded".equals(methodName)) {
+                    onPackageAdded((UserHandle) args[0], (String) args[1]);
+                } else if ("onPackageChanged".equals(methodName)) {
+                    onPackageChanged((UserHandle) args[0], (String) args[1]);
+                } else if ("onPackagesAvailable".equals(methodName)) {
+                    onPackagesAvailable((UserHandle) args[0], (String []) args[1],
+                            (Boolean) args[2]);
+                } else if ("onPackagesUnavailable".equals(methodName)) {
+                    onPackagesUnavailable((UserHandle) args[0], (String []) args[1],
+                            (Boolean) args[2]);
+                }
+            } finally {
+                return null;
+            }
+        }
+
+        public void onPackageRemoved(UserHandle user, String packageName) {
+            mListener.onPackageRemoved(UserHandleCompat.fromUser(user), packageName);
+        }
+
+        public void onPackageAdded(UserHandle user, String packageName) {
+            mListener.onPackageAdded(UserHandleCompat.fromUser(user), packageName);
+        }
+
+        public void onPackageChanged(UserHandle user, String packageName) {
+            mListener.onPackageChanged(UserHandleCompat.fromUser(user), packageName);
+        }
+
+        public void onPackagesAvailable(UserHandle user, String[] packageNames, boolean replacing) {
+            mListener.onPackagesAvailable(UserHandleCompat.fromUser(user), packageNames, replacing);
+        }
+
+        public void onPackagesUnavailable(UserHandle user, String[] packageNames,
+                boolean replacing) {
+            mListener.onPackagesUnavailable(UserHandleCompat.fromUser(user), packageNames,
+                    replacing);
+        }
+    }
+}
+
diff --git a/src/com/android/launcher3/compat/ReflectUtils.java b/src/com/android/launcher3/compat/ReflectUtils.java
new file mode 100644
index 000000000..e1b8a1f95
--- /dev/null
+++ b/src/com/android/launcher3/compat/ReflectUtils.java
@@ -0,0 +1,159 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.compat;
+
+import android.util.Log;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+public class ReflectUtils {
+    private static final String TAG = "LauncherReflect";
+
+    public static Class getClassForName(String className) {
+        try {
+            return Class.forName(className);
+        } catch (ClassNotFoundException e) {
+            Log.e(TAG, "Couldn't find class " + className, e);
+            return null;
+        }
+    }
+
+    public static Method getMethod(Class clazz, String method) {
+        try {
+            return clazz.getMethod(method);
+        } catch (NoSuchMethodException e) {
+            Log.e(TAG, "Couldn't find methid " + clazz.getName() + " " + method, e);
+            return null;
+        }
+    }
+
+    public static Method getMethod(Class clazz, String method, Class param1) {
+        try {
+            return clazz.getMethod(method, param1);
+        } catch (NoSuchMethodException e) {
+            Log.e(TAG, "Couldn't find methid " + clazz.getName() + " " + method, e);
+            return null;
+        }
+    }
+
+    public static Method getMethod(Class clazz, String method, Class param1, Class param2) {
+        try {
+            return clazz.getMethod(method, param1, param2);
+        } catch (NoSuchMethodException e) {
+            Log.e(TAG, "Couldn't find methid " + clazz.getName() + " " + method, e);
+            return null;
+        }
+    }
+
+    public static Method getMethod(Class clazz, String method, Class param1, Class param2,
+            Class param3) {
+        try {
+            return clazz.getMethod(method, param1, param2, param3);
+        } catch (NoSuchMethodException e) {
+            Log.e(TAG, "Couldn't find methid " + clazz.getName() + " " + method, e);
+            return null;
+        }
+    }
+
+    public static Method getMethod(Class clazz, String method, Class param1, Class param2,
+            Class param3, Class param4) {
+        try {
+            return clazz.getMethod(method, param1, param2, param3, param4);
+        } catch (NoSuchMethodException e) {
+            Log.e(TAG, "Couldn't find methid " + clazz.getName() + " " + method, e);
+            return null;
+        }
+    }
+
+    public static Object invokeMethod(Object object, Method method) {
+        try {
+            return method.invoke(object);
+        } catch (SecurityException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (IllegalArgumentException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (IllegalAccessException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (InvocationTargetException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        }
+        return null;
+    }
+
+    public static Object invokeMethod(Object object, Method method, Object param1) {
+        try {
+            return method.invoke(object, param1);
+        } catch (SecurityException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (IllegalArgumentException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (IllegalAccessException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (InvocationTargetException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        }
+        return null;
+    }
+
+    public static Object invokeMethod(Object object, Method method, Object param1, Object param2) {
+        try {
+            return method.invoke(object, param1, param2);
+        } catch (SecurityException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (IllegalArgumentException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (IllegalAccessException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (InvocationTargetException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        }
+        return null;
+    }
+
+    public static Object invokeMethod(Object object, Method method, Object param1, Object param2,
+            Object param3) {
+        try {
+            return method.invoke(object, param1, param2, param3);
+        } catch (SecurityException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (IllegalArgumentException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (IllegalAccessException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (InvocationTargetException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        }
+        return null;
+    }
+
+    public static Object invokeMethod(Object object, Method method, Object param1, Object param2,
+            Object param3, Object param4) {
+        try {
+            return method.invoke(object, param1, param2, param3, param4);
+        } catch (SecurityException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (IllegalArgumentException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (IllegalAccessException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (InvocationTargetException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        }
+        return null;
+    }
+}
\ No newline at end of file
diff --git a/src/com/android/launcher3/compat/UserHandleCompat.java b/src/com/android/launcher3/compat/UserHandleCompat.java
new file mode 100644
index 000000000..8f5dda238
--- /dev/null
+++ b/src/com/android/launcher3/compat/UserHandleCompat.java
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.compat;
+
+import android.os.Build;
+import android.os.UserHandle;
+
+public class UserHandleCompat {
+    private UserHandle mUser;
+
+    private UserHandleCompat(UserHandle user) {
+        mUser = user;
+    }
+
+    private UserHandleCompat() {
+    }
+
+    public static UserHandleCompat myUserHandle() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
+            return new UserHandleCompat(android.os.Process.myUserHandle());
+        } else {
+            return new UserHandleCompat();
+        }
+    }
+
+    static UserHandleCompat fromUser(UserHandle user) {
+        if (user == null) {
+            return null;
+        } else {
+            return new UserHandleCompat(user);
+        }
+    }
+
+    UserHandle getUser() {
+        return mUser;
+    }
+
+    @Override
+    public String toString() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
+            return mUser.toString();
+        } else {
+            return "";
+        }
+    }
+
+    @Override
+    public boolean equals(Object other) {
+        if (!(other instanceof UserHandleCompat)) {
+            return false;
+        }
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
+            return mUser.equals(((UserHandleCompat) other).mUser);
+        } else {
+            return true;
+        }
+    }
+
+    @Override
+    public int hashCode() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
+            return mUser.hashCode();
+        } else {
+            return 0;
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/com/android/launcher3/compat/UserManagerCompat.java b/src/com/android/launcher3/compat/UserManagerCompat.java
new file mode 100644
index 000000000..256e04a7b
--- /dev/null
+++ b/src/com/android/launcher3/compat/UserManagerCompat.java
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.compat;
+
+import android.content.Context;
+import android.graphics.drawable.Drawable;
+import android.os.Build;
+
+import java.util.List;
+
+public abstract class UserManagerCompat {
+    protected UserManagerCompat() {
+    }
+
+    public static UserManagerCompat getInstance(Context context) {
+        // TODO change this to use api version once L gets an API number.
+        if ("L".equals(Build.VERSION.CODENAME)) {
+            return new UserManagerCompatVL(context);
+        } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
+            return new UserManagerCompatV17(context);
+        } else {
+            return new UserManagerCompatV16();
+        }
+    }
+
+    public abstract List<UserHandleCompat> getUserProfiles();
+    public abstract long getSerialNumberForUser(UserHandleCompat user);
+    public abstract UserHandleCompat getUserForSerialNumber(long serialNumber);
+    public abstract Drawable getBadgedDrawableForUser(Drawable unbadged, UserHandleCompat user);
+}
diff --git a/src/com/android/launcher3/compat/UserManagerCompatV16.java b/src/com/android/launcher3/compat/UserManagerCompatV16.java
new file mode 100644
index 000000000..2009e4e27
--- /dev/null
+++ b/src/com/android/launcher3/compat/UserManagerCompatV16.java
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.compat;
+
+import android.graphics.drawable.Drawable;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class UserManagerCompatV16 extends UserManagerCompat {
+
+    UserManagerCompatV16() {
+    }
+
+    public List<UserHandleCompat> getUserProfiles() {
+        List<UserHandleCompat> profiles = new ArrayList<UserHandleCompat>(1);
+        profiles.add(UserHandleCompat.myUserHandle());
+        return profiles;
+    }
+
+    public UserHandleCompat getUserForSerialNumber(long serialNumber) {
+        return UserHandleCompat.myUserHandle();
+    }
+
+    public Drawable getBadgedDrawableForUser(Drawable unbadged,
+            UserHandleCompat user) {
+        return unbadged;
+    }
+
+    public long getSerialNumberForUser(UserHandleCompat user) {
+        return 0;
+    }
+}
diff --git a/src/com/android/launcher3/compat/UserManagerCompatV17.java b/src/com/android/launcher3/compat/UserManagerCompatV17.java
new file mode 100644
index 000000000..055359afe
--- /dev/null
+++ b/src/com/android/launcher3/compat/UserManagerCompatV17.java
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.compat;
+
+import android.content.Context;
+import android.graphics.drawable.Drawable;
+import android.os.UserHandle;
+import android.os.UserManager;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class UserManagerCompatV17 extends UserManagerCompatV16 {
+    protected UserManager mUserManager;
+
+    UserManagerCompatV17(Context context) {
+        mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE);
+    }
+
+    public long getSerialNumberForUser(UserHandleCompat user) {
+        return mUserManager.getSerialNumberForUser(user.getUser());
+    }
+
+    public UserHandleCompat getUserForSerialNumber(long serialNumber) {
+        return UserHandleCompat.fromUser(mUserManager.getUserForSerialNumber(serialNumber));
+    }
+}
+
diff --git a/src/com/android/launcher3/compat/UserManagerCompatVL.java b/src/com/android/launcher3/compat/UserManagerCompatVL.java
new file mode 100644
index 000000000..8d3ca8577
--- /dev/null
+++ b/src/com/android/launcher3/compat/UserManagerCompatVL.java
@@ -0,0 +1,68 @@
+
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.compat;
+
+import android.content.Context;
+import android.graphics.drawable.Drawable;
+import android.os.UserHandle;
+import android.os.UserManager;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.List;
+
+public class UserManagerCompatVL extends UserManagerCompatV17 {
+
+    UserManagerCompatVL(Context context) {
+        super(context);
+    }
+
+    public List<UserHandleCompat> getUserProfiles() {
+        Method method = ReflectUtils.getMethod(mUserManager.getClass(), "getUserProfiles");
+        if (method != null) {
+            List<UserHandle> users = (List<UserHandle>) ReflectUtils.invokeMethod(
+                    mUserManager, method);
+            if (users != null) {
+                ArrayList<UserHandleCompat> compatUsers = new ArrayList<UserHandleCompat>(
+                        users.size());
+                for (UserHandle user : users) {
+                    compatUsers.add(UserHandleCompat.fromUser(user));
+                }
+                return compatUsers;
+            }
+        }
+        // Fall back to non L version.
+        return super.getUserProfiles();
+    }
+
+    public Drawable getBadgedDrawableForUser(Drawable unbadged, UserHandleCompat user) {
+        Method method = ReflectUtils.getMethod(mUserManager.getClass(), "getBadgedDrawableForUser",
+                Drawable.class, UserHandle.class);
+        if (method != null) {
+            Drawable d = (Drawable) ReflectUtils.invokeMethod(mUserManager, method, unbadged,
+                    user.getUser());
+            if (d != null) {
+                return d;
+            }
+        }
+        // Fall back to non L version.
+        return super.getBadgedDrawableForUser(unbadged, user);
+    }
+}
+