/** * Copyright (C) 2007 Google Inc. * * 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 android.content.Context; import android.content.Intent; import android.content.pm.ApplicationInfo; import android.content.pm.PackageManager; import android.content.pm.PackageManager.NameNotFoundException; import android.content.pm.ResolveInfo; import android.content.res.Resources; import android.content.res.Resources.NotFoundException; import android.graphics.drawable.Drawable; import android.net.ConnectivityManager; import android.net.LinkProperties; import android.os.BatteryManager; import android.os.Bundle; import android.os.SystemProperties; import android.preference.Preference; import android.preference.PreferenceActivity.Header; import android.preference.PreferenceFrameLayout; import android.preference.PreferenceGroup; import android.telephony.TelephonyManager; import android.text.TextUtils; import android.view.View; import android.view.ViewGroup; import android.widget.ListView; import android.widget.TabWidget; import java.net.InetAddress; import java.util.Iterator; import java.util.List; import java.util.Locale; public class Utils { /** * Set the preference's title to the matching activity's label. */ public static final int UPDATE_PREFERENCE_FLAG_SET_TITLE_TO_MATCHING_ACTIVITY = 1; /** * Name of the meta-data item that should be set in the AndroidManifest.xml * to specify the icon that should be displayed for the preference. */ private static final String META_DATA_PREFERENCE_ICON = "com.android.settings.icon"; /** * Name of the meta-data item that should be set in the AndroidManifest.xml * to specify the title that should be displayed for the preference. */ private static final String META_DATA_PREFERENCE_TITLE = "com.android.settings.title"; /** * Name of the meta-data item that should be set in the AndroidManifest.xml * to specify the summary text that should be displayed for the preference. */ private static final String META_DATA_PREFERENCE_SUMMARY = "com.android.settings.summary"; /** * Finds a matching activity for a preference's intent. If a matching * activity is not found, it will remove the preference. * * @param context The context. * @param parentPreferenceGroup The preference group that contains the * preference whose intent is being resolved. * @param preferenceKey The key of the preference whose intent is being * resolved. * @param flags 0 or one or more of * {@link #UPDATE_PREFERENCE_FLAG_SET_TITLE_TO_MATCHING_ACTIVITY} * . * @return Whether an activity was found. If false, the preference was * removed. */ public static boolean updatePreferenceToSpecificActivityOrRemove(Context context, PreferenceGroup parentPreferenceGroup, String preferenceKey, int flags) { Preference preference = parentPreferenceGroup.findPreference(preferenceKey); if (preference == null) { return false; } Intent intent = preference.getIntent(); if (intent != null) { // Find the activity that is in the system image PackageManager pm = context.getPackageManager(); List list = pm.queryIntentActivities(intent, 0); int listSize = list.size(); for (int i = 0; i < listSize; i++) { ResolveInfo resolveInfo = list.get(i); if ((resolveInfo.activityInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0) { // Replace the intent with this specific activity preference.setIntent(new Intent().setClassName( resolveInfo.activityInfo.packageName, resolveInfo.activityInfo.name)); if ((flags & UPDATE_PREFERENCE_FLAG_SET_TITLE_TO_MATCHING_ACTIVITY) != 0) { // Set the preference title to the activity's label preference.setTitle(resolveInfo.loadLabel(pm)); } return true; } } } // Did not find a matching activity, so remove the preference parentPreferenceGroup.removePreference(preference); return true; } /** * Finds a matching activity for a preference's intent. If a matching * activity is not found, it will remove the preference. The icon, title and * summary of the preference will also be updated with the values retrieved * from the activity's meta-data elements. If no meta-data elements are * specified then the preference title will be set to match the label of the * activity, an icon and summary text will not be displayed. * * @param context The context. * @param parentPreferenceGroup The preference group that contains the * preference whose intent is being resolved. * @param preferenceKey The key of the preference whose intent is being * resolved. * * @return Whether an activity was found. If false, the preference was * removed. * * @see {@link #META_DATA_PREFERENCE_ICON} * {@link #META_DATA_PREFERENCE_TITLE} * {@link #META_DATA_PREFERENCE_SUMMARY} */ public static boolean updatePreferenceToSpecificActivityFromMetaDataOrRemove(Context context, PreferenceGroup parentPreferenceGroup, String preferenceKey) { IconPreferenceScreen preference = (IconPreferenceScreen)parentPreferenceGroup .findPreference(preferenceKey); if (preference == null) { return false; } Intent intent = preference.getIntent(); if (intent != null) { // Find the activity that is in the system image PackageManager pm = context.getPackageManager(); List list = pm.queryIntentActivities(intent, PackageManager.GET_META_DATA); int listSize = list.size(); for (int i = 0; i < listSize; i++) { ResolveInfo resolveInfo = list.get(i); if ((resolveInfo.activityInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0) { Drawable icon = null; String title = null; String summary = null; // Get the activity's meta-data try { Resources res = pm .getResourcesForApplication(resolveInfo.activityInfo.packageName); Bundle metaData = resolveInfo.activityInfo.metaData; if (res != null && metaData != null) { icon = res.getDrawable(metaData.getInt(META_DATA_PREFERENCE_ICON)); title = res.getString(metaData.getInt(META_DATA_PREFERENCE_TITLE)); summary = res.getString(metaData.getInt(META_DATA_PREFERENCE_SUMMARY)); } } catch (NameNotFoundException e) { // Ignore } catch (NotFoundException e) { // Ignore } // Set the preference title to the activity's label if no // meta-data is found if (TextUtils.isEmpty(title)) { title = resolveInfo.loadLabel(pm).toString(); } // Set icon, title and summary for the preference preference.setIcon(icon); preference.setTitle(title); preference.setSummary(summary); // Replace the intent with this specific activity preference.setIntent(new Intent().setClassName( resolveInfo.activityInfo.packageName, resolveInfo.activityInfo.name)); return true; } } } // Did not find a matching activity, so remove the preference parentPreferenceGroup.removePreference(preference); return false; } public static boolean updateHeaderToSpecificActivityFromMetaDataOrRemove(Context context, List
target, Header header) { Intent intent = header.intent; if (intent != null) { // Find the activity that is in the system image PackageManager pm = context.getPackageManager(); List list = pm.queryIntentActivities(intent, PackageManager.GET_META_DATA); int listSize = list.size(); for (int i = 0; i < listSize; i++) { ResolveInfo resolveInfo = list.get(i); if ((resolveInfo.activityInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0) { Drawable icon = null; String title = null; String summary = null; // Get the activity's meta-data try { Resources res = pm.getResourcesForApplication( resolveInfo.activityInfo.packageName); Bundle metaData = resolveInfo.activityInfo.metaData; if (res != null && metaData != null) { icon = res.getDrawable(metaData.getInt(META_DATA_PREFERENCE_ICON)); title = res.getString(metaData.getInt(META_DATA_PREFERENCE_TITLE)); summary = res.getString(metaData.getInt(META_DATA_PREFERENCE_SUMMARY)); } } catch (NameNotFoundException e) { // Ignore } catch (NotFoundException e) { // Ignore } // Set the preference title to the activity's label if no // meta-data is found if (TextUtils.isEmpty(title)) { title = resolveInfo.loadLabel(pm).toString(); } // Set icon, title and summary for the preference // TODO: //header.icon = icon; header.title = title; header.summary = summary; // Replace the intent with this specific activity header.intent = new Intent().setClassName(resolveInfo.activityInfo.packageName, resolveInfo.activityInfo.name); return true; } } } // Did not find a matching activity, so remove the preference if (target.remove(header)) System.err.println("Removed " + header.id); return false; } /** * Returns true if Monkey is running. */ public static boolean isMonkeyRunning() { return SystemProperties.getBoolean("ro.monkey", false); } /** * Returns whether the device is voice-capable (meaning, it is also a phone). */ public static boolean isVoiceCapable(Context context) { TelephonyManager telephony = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE); return telephony != null && telephony.isVoiceCapable(); } public static boolean isWifiOnly(Context context) { ConnectivityManager cm = (ConnectivityManager)context.getSystemService( Context.CONNECTIVITY_SERVICE); return (cm.isNetworkSupported(ConnectivityManager.TYPE_MOBILE) == false); } /** * Returns the WIFI IP Addresses, if any, taking into account IPv4 and IPv6 style addresses. * @param context the application context * @return the formatted and comma-separated IP addresses, or null if none. */ public static String getWifiIpAddresses(Context context) { ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); LinkProperties prop = cm.getLinkProperties(ConnectivityManager.TYPE_WIFI); if (prop == null) return null; Iterator iter = prop.getAddresses().iterator(); // If there are no entries, return null if (!iter.hasNext()) return null; // Concatenate all available addresses, comma separated String addresses = ""; while (iter.hasNext()) { addresses += iter.next().getHostAddress(); if (iter.hasNext()) addresses += ", "; } return addresses; } public static Locale createLocaleFromString(String localeStr) { // TODO: is there a better way to actually construct a locale that will match? // The main problem is, on top of Java specs, locale.toString() and // new Locale(locale.toString()).toString() do not return equal() strings in // many cases, because the constructor takes the only string as the language // code. So : new Locale("en", "US").toString() => "en_US" // And : new Locale("en_US").toString() => "en_us" if (null == localeStr) return Locale.getDefault(); String[] brokenDownLocale = localeStr.split("_", 3); // split may not return a 0-length array. if (1 == brokenDownLocale.length) { return new Locale(brokenDownLocale[0]); } else if (2 == brokenDownLocale.length) { return new Locale(brokenDownLocale[0], brokenDownLocale[1]); } else { return new Locale(brokenDownLocale[0], brokenDownLocale[1], brokenDownLocale[2]); } } public static String getBatteryPercentage(Intent batteryChangedIntent) { int level = batteryChangedIntent.getIntExtra("level", 0); int scale = batteryChangedIntent.getIntExtra("scale", 100); return String.valueOf(level * 100 / scale) + "%"; } public static String getBatteryStatus(Resources res, Intent batteryChangedIntent) { final Intent intent = batteryChangedIntent; int plugType = intent.getIntExtra("plugged", 0); int status = intent.getIntExtra("status", BatteryManager.BATTERY_STATUS_UNKNOWN); String statusString; if (status == BatteryManager.BATTERY_STATUS_CHARGING) { statusString = res.getString(R.string.battery_info_status_charging); if (plugType > 0) { statusString = statusString + " " + res.getString((plugType == BatteryManager.BATTERY_PLUGGED_AC) ? R.string.battery_info_status_charging_ac : R.string.battery_info_status_charging_usb); } } else if (status == BatteryManager.BATTERY_STATUS_DISCHARGING) { statusString = res.getString(R.string.battery_info_status_discharging); } else if (status == BatteryManager.BATTERY_STATUS_NOT_CHARGING) { statusString = res.getString(R.string.battery_info_status_not_charging); } else if (status == BatteryManager.BATTERY_STATUS_FULL) { statusString = res.getString(R.string.battery_info_status_full); } else { statusString = res.getString(R.string.battery_info_status_unknown); } return statusString; } /** * Prepare a custom preferences layout, moving padding to {@link ListView} * when outside scrollbars are requested. Usually used to display * {@link ListView} and {@link TabWidget} with correct padding. */ public static void prepareCustomPreferencesList(ViewGroup parent, View child, ListView list) { final boolean movePadding = list.getScrollBarStyle() == View.SCROLLBARS_OUTSIDE_OVERLAY; if (movePadding && parent instanceof PreferenceFrameLayout) { ((PreferenceFrameLayout.LayoutParams) child.getLayoutParams()).removeBorders = true; final Resources res = list.getResources(); final int paddingSide = res.getDimensionPixelSize( com.android.internal.R.dimen.preference_fragment_padding_side); final int paddingBottom = res.getDimensionPixelSize( com.android.internal.R.dimen.preference_fragment_padding_bottom); list.setPadding(paddingSide, 0, paddingSide, paddingBottom); } } }