Files
app_Settings/src/com/android/settings/HomeSettings.java
Sander Alewijnse cd40220372 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
2014-08-07 12:48:22 +01:00

422 lines
16 KiB
Java

/*
* Copyright (C) 2013 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.settings;
import java.util.ArrayList;
import java.util.List;
import android.app.ActivityManager;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.content.pm.ActivityInfo;
import android.content.pm.ApplicationInfo;
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;
import com.android.settings.search.BaseSearchIndexProvider;
import com.android.settings.search.Index;
import com.android.settings.search.Indexable;
import com.android.settings.search.SearchIndexableRaw;
public class HomeSettings extends SettingsPreferenceFragment implements Indexable {
static final String TAG = "HomeSettings";
static final int REQUESTING_UNINSTALL = 10;
public static final String HOME_PREFS = "home_prefs";
public static final String HOME_PREFS_DO_SHOW = "do_show";
public static final String HOME_SHOW_NOTICE = "show";
private class HomePackageReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
buildHomeActivitiesList();
Index.getInstance(context).updateFromClassNameResource(
HomeSettings.class.getName(), true, true);
}
}
private PreferenceGroup mPrefGroup;
private PackageManager mPm;
private ComponentName[] mHomeComponentSet;
private ArrayList<HomeAppPreference> mPrefs;
private HomeAppPreference mCurrentHome = null;
private final IntentFilter mHomeFilter;
private boolean mShowNotice;
private HomePackageReceiver mHomePackageReceiver = new HomePackageReceiver();
public HomeSettings() {
mHomeFilter = new IntentFilter(Intent.ACTION_MAIN);
mHomeFilter.addCategory(Intent.CATEGORY_HOME);
mHomeFilter.addCategory(Intent.CATEGORY_DEFAULT);
}
OnClickListener mHomeClickListener = new OnClickListener() {
@Override
public void onClick(View v) {
int index = (Integer)v.getTag();
HomeAppPreference pref = mPrefs.get(index);
if (!pref.isChecked) {
makeCurrentHome(pref);
}
}
};
OnClickListener mDeleteClickListener = new OnClickListener() {
@Override
public void onClick(View v) {
int index = (Integer)v.getTag();
uninstallApp(mPrefs.get(index));
}
};
void makeCurrentHome(HomeAppPreference newHome) {
if (mCurrentHome != null) {
mCurrentHome.setChecked(false);
}
newHome.setChecked(true);
mCurrentHome = newHome;
mPm.replacePreferredActivity(mHomeFilter, IntentFilter.MATCH_CATEGORY_EMPTY,
mHomeComponentSet, newHome.activityName);
}
void uninstallApp(HomeAppPreference pref) {
// Uninstallation is done by asking the OS to do it
Uri packageURI = Uri.parse("package:" + pref.uninstallTarget);
Intent uninstallIntent = new Intent(Intent.ACTION_UNINSTALL_PACKAGE, packageURI);
uninstallIntent.putExtra(Intent.EXTRA_UNINSTALL_ALL_USERS, false);
int requestCode = REQUESTING_UNINSTALL + (pref.isChecked ? 1 : 0);
startActivityForResult(uninstallIntent, requestCode);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// Rebuild the list now that we might have nuked something
buildHomeActivitiesList();
// if the previous home app is now gone, fall back to the system one
if (requestCode > REQUESTING_UNINSTALL) {
// if mCurrentHome has gone null, it means we didn't find the previously-
// default home app when rebuilding the list, i.e. it was the one we
// just uninstalled. When that happens we make the system-bundled
// home app the active default.
if (mCurrentHome == null) {
for (int i = 0; i < mPrefs.size(); i++) {
HomeAppPreference pref = mPrefs.get(i);
if (pref.isSystem) {
makeCurrentHome(pref);
break;
}
}
}
}
// If we're down to just one possible home app, back out of this settings
// fragment and show a dialog explaining to the user that they won't see
// 'Home' settings now until such time as there are multiple available.
if (mPrefs.size() < 2) {
if (mShowNotice) {
mShowNotice = false;
SettingsActivity.requestHomeNotice();
}
finishFragment();
}
}
private void buildHomeActivitiesList() {
ArrayList<ResolveInfo> homeActivities = new ArrayList<ResolveInfo>();
ComponentName currentDefaultHome = mPm.getHomeActivities(homeActivities);
Context context = getActivity();
mCurrentHome = null;
mPrefGroup.removeAll();
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;
ComponentName activityName = new ComponentName(info.packageName, info.name);
mHomeComponentSet[i] = activityName;
try {
Drawable icon = info.loadIcon(mPm);
CharSequence name = info.loadLabel(mPm);
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);
if (activityName.equals(currentDefaultHome)) {
mCurrentHome = pref;
}
prefIndex++;
} catch (Exception e) {
Log.v(TAG, "Problem dealing with activity " + activityName, e);
}
}
if (mCurrentHome != null) {
new Handler().post(new Runnable() {
public void run() {
mCurrentHome.setChecked(true);
}
});
}
}
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);
addPreferencesFromResource(R.xml.home_selection);
mPm = getPackageManager();
mPrefGroup = (PreferenceGroup) findPreference("home");
Bundle args = getArguments();
mShowNotice = (args != null) && args.getBoolean(HOME_SHOW_NOTICE, false);
}
@Override
public void onResume() {
super.onResume();
final IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED);
filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
filter.addAction(Intent.ACTION_PACKAGE_CHANGED);
filter.addAction(Intent.ACTION_PACKAGE_REPLACED);
filter.addDataScheme("package");
getActivity().registerReceiver(mHomePackageReceiver, filter);
buildHomeActivitiesList();
}
@Override
public void onPause() {
super.onPause();
getActivity().unregisterReceiver(mHomePackageReceiver);
}
private class HomeAppPreference extends Preference {
ComponentName activityName;
int index;
HomeSettings fragment;
final ColorFilter grayscaleFilter;
boolean isChecked;
boolean isSystem;
String uninstallTarget;
public HomeAppPreference(Context context, ComponentName activity,
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;
ColorMatrix colorMatrix = new ColorMatrix();
colorMatrix.setSaturation(0f);
float[] matrix = colorMatrix.getArray();
matrix[18] = 0.5f;
grayscaleFilter = new ColorMatrixColorFilter(colorMatrix);
determineTargets(info);
}
// Check whether this activity is bundled on the system, with awareness
// of the META_HOME_ALTERNATE mechanism.
private void determineTargets(ActivityInfo info) {
final Bundle meta = info.metaData;
if (meta != null) {
final String altHomePackage = meta.getString(ActivityManager.META_HOME_ALTERNATE);
if (altHomePackage != null) {
try {
final int match = mPm.checkSignatures(info.packageName, altHomePackage);
if (match >= PackageManager.SIGNATURE_MATCH) {
PackageInfo altInfo = mPm.getPackageInfo(altHomePackage, 0);
final int altFlags = altInfo.applicationInfo.flags;
isSystem = (altFlags & ApplicationInfo.FLAG_SYSTEM) != 0;
uninstallTarget = altInfo.packageName;
return;
}
} catch (Exception e) {
// e.g. named alternate package not found during lookup
Log.w(TAG, "Unable to compare/resolve alternate", e);
}
}
}
// No suitable metadata redirect, so use the package's own info
isSystem = (info.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0;
uninstallTarget = info.packageName;
}
@Override
protected void onBindView(View view) {
super.onBindView(view);
RadioButton radio = (RadioButton) view.findViewById(R.id.home_radio);
radio.setChecked(isChecked);
Integer indexObj = new Integer(index);
ImageView icon = (ImageView) view.findViewById(R.id.home_app_uninstall);
if (isSystem) {
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.setTag(indexObj);
v.setOnClickListener(mHomeClickListener);
}
void setChecked(boolean state) {
if (state != isChecked) {
isChecked = state;
notifyChanged();
}
}
}
/**
* For search
*/
public static final SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
new BaseSearchIndexProvider() {
@Override
public List<SearchIndexableRaw> getRawDataToIndex(Context context, boolean enabled) {
final List<SearchIndexableRaw> result = new ArrayList<SearchIndexableRaw>();
final PackageManager pm = context.getPackageManager();
final ArrayList<ResolveInfo> homeActivities = new ArrayList<ResolveInfo>();
pm.getHomeActivities(homeActivities);
final SharedPreferences sp = context.getSharedPreferences(
HomeSettings.HOME_PREFS, Context.MODE_PRIVATE);
final boolean doShowHome = sp.getBoolean(HomeSettings.HOME_PREFS_DO_SHOW, false);
// We index Home Launchers only if there are more than one or if we are showing the
// Home tile into the Dashboard
if (homeActivities.size() > 1 || doShowHome) {
final Resources res = context.getResources();
// Add fragment title
SearchIndexableRaw data = new SearchIndexableRaw(context);
data.title = res.getString(R.string.home_settings);
data.screenTitle = res.getString(R.string.home_settings);
data.keywords = res.getString(R.string.keywords_home);
result.add(data);
for (int i = 0; i < homeActivities.size(); i++) {
final ResolveInfo resolveInfo = homeActivities.get(i);
final ActivityInfo activityInfo = resolveInfo.activityInfo;
CharSequence name;
try {
name = activityInfo.loadLabel(pm);
if (TextUtils.isEmpty(name)) {
continue;
}
} catch (Exception e) {
Log.v(TAG, "Problem dealing with Home " + activityInfo.name, e);
continue;
}
data = new SearchIndexableRaw(context);
data.title = name.toString();
data.screenTitle = res.getString(R.string.home_settings);
result.add(data);
}
}
return result;
}
};
}