DialerUtils.java revision 46fd712ad2896858d977274f94a08aef5bdf0e4c 
1/*
2 * Copyright (C) 2014 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 */
16package com.android.dialer.util;
17
18import android.content.ActivityNotFoundException;
19import android.content.ComponentName;
20import android.content.Context;
21import android.content.Intent;
22import android.content.pm.PackageManager;
23import android.content.pm.ResolveInfo;
24import android.net.Uri;
25import android.provider.Telephony;
26import android.widget.Toast;
27
28import com.android.contacts.common.CallUtil;
29import com.android.dialer.R;
30
31import java.util.List;
32
33/**
34 * General purpose utility methods for the Dialer.
35 */
36public class DialerUtils {
37
38    /**
39     * Attempts to start an activity and displays a toast with the default error message if the
40     * activity is not found, instead of throwing an exception.
41     *
42     * @param context to start the activity with.
43     * @param intent to start the activity with.
44     */
45    public static void startActivityWithErrorToast(Context context, Intent intent) {
46        startActivityWithErrorToast(context, intent, R.string.activity_not_available);
47    }
48
49    /**
50     * Attempts to start an activity and displays a toast with a provided error message if the
51     * activity is not found, instead of throwing an exception.
52     *
53     * @param context to start the activity with.
54     * @param intent to start the activity with.
55     * @param msgId Resource ID of the string to display in an error message if the activity is
56     *              not found.
57     */
58    public static void startActivityWithErrorToast(Context context, Intent intent, int msgId) {
59        try {
60          context.startActivity(intent);
61        } catch (ActivityNotFoundException e) {
62            Toast.makeText(context, msgId, Toast.LENGTH_SHORT).show();
63        }
64    }
65
66    /**
67     * Returns the component name to use in order to send an SMS using the default SMS application,
68     * or null if none exists.
69     */
70    public static ComponentName getSmsComponent(Context context) {
71        String smsPackage = Telephony.Sms.getDefaultSmsPackage(context);
72        if (smsPackage != null) {
73            final PackageManager packageManager = context.getPackageManager();
74            final Intent intent = new Intent(Intent.ACTION_SENDTO,
75                    Uri.fromParts(CallUtil.SCHEME_SMSTO, "", null));
76            final List<ResolveInfo> resolveInfos = packageManager.queryIntentActivities(intent, 0);
77            for (ResolveInfo resolveInfo : resolveInfos) {
78                if (smsPackage.equals(resolveInfo.activityInfo.packageName)) {
79                    return new ComponentName(smsPackage, resolveInfo.activityInfo.name);
80                }
81            }
82        }
83        return null;
84    }
85}
86