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      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 import com.android.managedprovisioning.ProvisionLogger;
     30 
     31 /**
     32  * Information relating to the currently installed MDM package manager.
     33  */
     34 @Immutable
     35 public final class MdmPackageInfo {
     36     // ToDo: add toString and equals for better testability.
     37 
     38     public final Drawable packageIcon;
     39     public final String appLabel;
     40 
     41     /**
     42      * Default constructor.
     43      */
     44     public MdmPackageInfo(@NonNull Drawable packageIcon, @NonNull String appLabel) {
     45         this.packageIcon = checkNotNull(packageIcon, "package icon must not be null");
     46         this.appLabel = checkNotNull(appLabel, "app label must not be null");
     47     }
     48 
     49     /**
     50      * Constructs an {@link MdmPackageInfo} object by reading the data from the package manager.
     51      *
     52      * @param context a {@link Context} object
     53      * @param packageName the name of the mdm package
     54      * @return an {@link MdMPackageInfo} object for the given package, or {@code null} if the
     55      *         package does not exist on the device
     56      */
     57     @Nullable
     58     public static MdmPackageInfo createFromPackageName(@NonNull Context context,
     59             @Nullable String packageName) {
     60         if (packageName != null) {
     61             PackageManager pm = context.getPackageManager();
     62             try {
     63                 ApplicationInfo ai = pm.getApplicationInfo(packageName, /* default flags */ 0);
     64                 return new MdmPackageInfo(pm.getApplicationIcon(packageName),
     65                         pm.getApplicationLabel(ai).toString());
     66             } catch (PackageManager.NameNotFoundException e) {
     67                 // Package does not exist, ignore. Should never happen.
     68                 ProvisionLogger.logw("Package not currently installed: " + packageName);
     69             }
     70         }
     71         return null;
     72     }
     73 }
     74