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      1 /*
      2  * Copyright (C) 2010 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.contacts.util;
     18 
     19 import com.android.contacts.R;
     20 
     21 import android.content.Context;
     22 import android.content.Intent;
     23 import android.content.pm.PackageManager;
     24 import android.content.pm.ResolveInfo;
     25 import android.net.Uri;
     26 import android.net.sip.SipManager;
     27 import android.telephony.TelephonyManager;
     28 
     29 import java.util.List;
     30 
     31 /**
     32  * Provides static functions to quickly test the capabilities of this device. The static
     33  * members are not safe for threading
     34  */
     35 public final class PhoneCapabilityTester {
     36     private static boolean sIsInitialized;
     37     private static boolean sIsPhone;
     38     private static boolean sIsSipPhone;
     39 
     40     /**
     41      * Tests whether the Intent has a receiver registered. This can be used to show/hide
     42      * functionality (like Phone, SMS)
     43      */
     44     public static boolean isIntentRegistered(Context context, Intent intent) {
     45         final PackageManager packageManager = context.getPackageManager();
     46         final List<ResolveInfo> receiverList = packageManager.queryIntentActivities(intent,
     47                 PackageManager.MATCH_DEFAULT_ONLY);
     48         return receiverList.size() > 0;
     49     }
     50 
     51     /**
     52      * Returns true if this device can be used to make phone calls
     53      */
     54     public static boolean isPhone(Context context) {
     55         if (!sIsInitialized) initialize(context);
     56         // Is the device physically capabable of making phone calls?
     57         return sIsPhone;
     58     }
     59 
     60     private static void initialize(Context context) {
     61         final TelephonyManager telephonyManager = new TelephonyManager(context);
     62         sIsPhone = telephonyManager.isVoiceCapable();
     63         sIsSipPhone = sIsPhone && SipManager.isVoipSupported(context);
     64         sIsInitialized = true;
     65     }
     66 
     67     /**
     68      * Returns true if this device can be used to make sip calls
     69      */
     70     public static boolean isSipPhone(Context context) {
     71         if (!sIsInitialized) initialize(context);
     72         return sIsSipPhone;
     73     }
     74 
     75     /**
     76      * Returns true if the device has an SMS application installed.
     77      */
     78     public static boolean isSmsIntentRegistered(Context context) {
     79         // Don't cache the result as the user might install third party apps to send SMS
     80         final Intent intent = new Intent(Intent.ACTION_SENDTO,
     81                 Uri.fromParts(Constants.SCHEME_SMSTO, "", null));
     82         return isIntentRegistered(context, intent);
     83     }
     84 
     85     /**
     86      * True if we are using two-pane layouts ("tablet mode"), false if we are using single views
     87      * ("phone mode")
     88      */
     89     public static boolean isUsingTwoPanes(Context context) {
     90         return context.getResources().getBoolean(R.bool.config_use_two_panes);
     91     }
     92 
     93     /**
     94      * True if the favorites tab should be shown in two-pane mode.  False, otherwise.
     95      */
     96     public static boolean isUsingTwoPanesInFavorites(Context context) {
     97         return context.getResources().getBoolean(R.bool.config_use_two_panes_in_favorites);
     98     }
     99 }
    100