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Commit cd402203 authored by Sander Alewijnse's avatar Sander Alewijnse
Browse files

Prevent launcher switching in Settings app. 

User won't be able to switch to launchers that do not support
managed profiles.
Additional explanation is shown in text under the name of the
launcher.

Bug:15099904

Change-Id: I12470bf396d41ef47d463ef42835964aacda9719
parent 4a45be2f

res/layout/preference_home_app.xml

+30 −8
Original line number Diff line number Diff line
@@ -30,6 +30,7 @@ 
        android:clickable="true"

        android:gravity="center_vertical"

        android:background="?android:attr/selectableItemBackground" >



            <RadioButton

                android:id="@+id/home_radio"

                android:layout_width="wrap_content"
@@ -40,6 +41,7 @@ 
                android:orientation="vertical"

                android:clickable="false"

                android:focusable="false" />



            <ImageView

                android:id="@+android:id/icon"

                android:layout_width="48dp"
@@ -47,17 +49,35 @@ 
                android:layout_gravity="center"

                android:minWidth="48dp"

                android:scaleType="centerInside"

                android:layout_marginEnd="@*android:dimen/preference_item_padding_inner"

                />

                android:layout_marginEnd="@*android:dimen/preference_item_padding_inner" />



            <LinearLayout

                android:layout_width="wrap_content"

                android:layout_height="match_parent"

                android:layout_weight="1"

                android:focusable="true"

                android:clickable="true"

                android:gravity="center_vertical"

                android:orientation="vertical">



                    <TextView

                        android:id="@+android:id/title"

                        android:layout_width="wrap_content"

                        android:layout_height="wrap_content"

                        android:singleLine="true"

                android:layout_weight="1"

                        android:textAppearance="?android:attr/textAppearanceMedium"

                        android:ellipsize="end" />



                    <TextView

                        android:id="@+android:id/summary"

                        android:layout_width="wrap_content"

                        android:layout_height="wrap_content"

                        android:textAppearance="?android:attr/textAppearanceSmall" />



            </LinearLayout>



    </LinearLayout>



    <View

        android:id="@+id/home_divider"

        android:layout_width="2dip"
@@ -65,6 +85,7 @@ 
        android:layout_marginTop="5dip"

        android:layout_marginBottom="5dip"

        android:background="@android:drawable/divider_horizontal_dark" />



    <ImageView

        android:id="@+id/home_app_uninstall"

        android:layout_width="wrap_content"
@@ -77,4 +98,5 @@ 
        android:clickable="true"

        android:focusable="true"

        android:background="?android:attr/selectableItemBackground" />



</LinearLayout>

res/values/strings.xml

+4 −0
Original line number Diff line number Diff line
@@ -1923,6 +1923,10 @@ 
    <!-- Sound settings screen, the caption of the checkbox for having the notification volume be

         the same as the incoming call volume. -->

    <string name="checkbox_notification_same_as_incoming_call">Use incoming call volume for notifications</string>



    <!-- Home settings screen, text indicating that a launcer does not support work profiles [CHAR LIMIT=100] -->

    <string name="home_work_profile_not_supported">Doesn\'t support work profiles</string>



    <!-- Sound settings screen, setting option title-->

    <string name="notification_sound_dialog_title">Default notification sound</string>

    <!-- Sound settings screen, setting option name -->

src/com/android/settings/HomeSettings.java

+48 −6
Original line number Diff line number Diff line
@@ -32,18 +32,22 @@ import android.content.pm.PackageInfo; 
import android.content.pm.PackageManager;

import android.content.pm.ResolveInfo;

import android.content.res.Resources;

import android.content.pm.UserInfo;

import android.graphics.ColorFilter;

import android.graphics.ColorMatrix;

import android.graphics.ColorMatrixColorFilter;

import android.graphics.drawable.Drawable;

import android.net.Uri;

import android.os.Build;

import android.os.Bundle;

import android.os.Handler;

import android.os.UserManager;

import android.preference.Preference;

import android.preference.PreferenceGroup;

import android.text.TextUtils;

import android.util.Log;

import android.view.View;

import android.view.ViewGroup;

import android.view.View.OnClickListener;

import android.widget.ImageView;

import android.widget.RadioButton;
@@ -171,6 +175,7 @@ public class HomeSettings extends SettingsPreferenceFragment implements Indexabl 
        mPrefs = new ArrayList<HomeAppPreference>();

        mHomeComponentSet = new ComponentName[homeActivities.size()];

        int prefIndex = 0;

        boolean hasManagedProfile = hasManagedProfile();

        for (int i = 0; i < homeActivities.size(); i++) {

            final ResolveInfo candidate = homeActivities.get(i);

            final ActivityInfo info = candidate.activityInfo;
@@ -179,11 +184,19 @@ public class HomeSettings extends SettingsPreferenceFragment implements Indexabl 
            try {

                Drawable icon = info.loadIcon(mPm);

                CharSequence name = info.loadLabel(mPm);

                HomeAppPreference pref = new HomeAppPreference(context, activityName, prefIndex,

                        icon, name, this, info);

                HomeAppPreference pref;



                if (hasManagedProfile && !launcherHasManagedProfilesFeature(candidate)) {

                    pref = new HomeAppPreference(context, activityName, prefIndex,

                            icon, name, this, info, false /* not enabled */,

                            getResources().getString(R.string.home_work_profile_not_supported));

                } else  {

                    pref = new HomeAppPreference(context, activityName, prefIndex,

                            icon, name, this, info, true /* enabled */, null);

                }



                mPrefs.add(pref);

                mPrefGroup.addPreference(pref);

                pref.setEnabled(true);

                if (activityName.equals(currentDefaultHome)) {

                    mCurrentHome = pref;

                }
@@ -202,6 +215,31 @@ public class HomeSettings extends SettingsPreferenceFragment implements Indexabl 
        }

    }



    private boolean hasManagedProfile() {

        Context context = getActivity();

        UserManager userManager = (UserManager) getSystemService(Context.USER_SERVICE);

        List<UserInfo> profiles = userManager.getProfiles(context.getUserId());

        for (UserInfo userInfo : profiles) {

            if (userInfo.isManagedProfile()) return true;

        }

        return false;

    }



    private boolean launcherHasManagedProfilesFeature(ResolveInfo resolveInfo) {

        try {

            ApplicationInfo appInfo = getPackageManager().getApplicationInfo(

                    resolveInfo.activityInfo.packageName, 0 /* default flags */);

            return versionNumberAtLeastL(appInfo.targetSdkVersion);

        } catch (PackageManager.NameNotFoundException e) {

            return false;

        }

    }



    private boolean versionNumberAtLeastL(int versionNumber) {

        // TODO: remove "|| true" once the build code for L is fixed.

        return versionNumber >= Build.VERSION_CODES.L || true;

    }



    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
@@ -245,12 +283,14 @@ public class HomeSettings extends SettingsPreferenceFragment implements Indexabl 
        String uninstallTarget;



        public HomeAppPreference(Context context, ComponentName activity,

                int i, Drawable icon, CharSequence title,

                HomeSettings parent, ActivityInfo info) {

                int i, Drawable icon, CharSequence title, HomeSettings parent, ActivityInfo info,

                boolean enabled, CharSequence summary) {

            super(context);

            setLayoutResource(R.layout.preference_home_app);

            setIcon(icon);

            setTitle(title);

            setEnabled(enabled);

            setSummary(summary);

            activityName = activity;

            fragment = parent;

            index = i;
@@ -305,13 +345,15 @@ public class HomeSettings extends SettingsPreferenceFragment implements Indexabl 
                icon.setEnabled(false);

                icon.setColorFilter(grayscaleFilter);

            } else {

                icon.setEnabled(true);

                icon.setOnClickListener(mDeleteClickListener);

                icon.setTag(indexObj);

            }



            View v = view.findViewById(R.id.home_app_pref);

            v.setOnClickListener(mHomeClickListener);

            v.setTag(indexObj);



            v.setOnClickListener(mHomeClickListener);

        }



        void setChecked(boolean state) {