1 /*
2  * Copyright 2016, 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.managedprovisioning.common;
18 
19 import static com.android.internal.util.Preconditions.checkNotNull;
20 
21 import android.annotation.NonNull;
22 import android.annotation.Nullable;
23 import android.content.Context;
24 import android.content.pm.ApplicationInfo;
25 import android.content.pm.PackageManager;
26 import android.graphics.drawable.Drawable;
27 
28 import com.android.internal.annotations.Immutable;
29 
30 /**
31  * Information relating to the currently installed MDM package manager.
32  */
33 @Immutable
34 public final class MdmPackageInfo {
35     // ToDo: add toString and equals for better testability.
36 
37     public final Drawable packageIcon;
38     public final String appLabel;
39 
40     /**
41      * Default constructor.
42      */
MdmPackageInfo(@onNull Drawable packageIcon, @NonNull String appLabel)43     public MdmPackageInfo(@NonNull Drawable packageIcon, @NonNull String appLabel) {
44         this.packageIcon = checkNotNull(packageIcon, "package icon must not be null");
45         this.appLabel = checkNotNull(appLabel, "app label must not be null");
46     }
47 
48     /**
49      * Constructs an {@link MdmPackageInfo} object by reading the data from the package manager.
50      *
51      * @param context a {@link Context} object
52      * @param packageName the name of the mdm package
53      * @return an {@link MdMPackageInfo} object for the given package, or {@code null} if the
54      *         package does not exist on the device
55      */
56     @Nullable
createFromPackageName(@onNull Context context, @Nullable String packageName)57     public static MdmPackageInfo createFromPackageName(@NonNull Context context,
58             @Nullable String packageName) {
59         if (packageName != null) {
60             PackageManager pm = context.getPackageManager();
61             try {
62                 ApplicationInfo ai = pm.getApplicationInfo(packageName, /* default flags */ 0);
63                 return new MdmPackageInfo(pm.getApplicationIcon(packageName),
64                         pm.getApplicationLabel(ai).toString());
65             } catch (PackageManager.NameNotFoundException e) {
66                 // Package does not exist, ignore. Should never happen.
67                 ProvisionLogger.logw("Package not currently installed: " + packageName);
68             }
69         }
70         return null;
71     }
72 }
73