Android example source code file (PackageHelper.java)

This example Android source code file (PackageHelper.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" ^TM.

Java - Android tags/keywords

android, can't, created, failed, imountservice, io, mountservice, os, packagehelper, recommend_failed_already_exists, recommend_failed_insufficient_storage, recommend_failed_invalid_apk, recommend_install_external, recommend_media_unavailable, remoteexception, storage, string, tag, util, utilities

The PackageHelper.java Android example source code

/*
 * Copyright (C) 2009 The Android Open Source Project
 *
 * 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.internal.content;

import android.os.storage.IMountService;

import android.os.IBinder;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.os.storage.StorageResultCode;
import android.util.Log;

import java.io.File;

/**
 * Constants used internally between the PackageManager
 * and media container service transports.
 * Some utility methods to invoke MountService api.
 */
public class PackageHelper {
    public static final int RECOMMEND_INSTALL_INTERNAL = 1;
    public static final int RECOMMEND_INSTALL_EXTERNAL = 2;
    public static final int RECOMMEND_FAILED_INSUFFICIENT_STORAGE = -1;
    public static final int RECOMMEND_FAILED_INVALID_APK = -2;
    public static final int RECOMMEND_FAILED_INVALID_LOCATION = -3;
    public static final int RECOMMEND_FAILED_ALREADY_EXISTS = -4;
    public static final int RECOMMEND_MEDIA_UNAVAILABLE = -5;
    private static final boolean localLOGV = true;
    private static final String TAG = "PackageHelper";
    // App installation location settings values
    public static final int APP_INSTALL_AUTO = 0;
    public static final int APP_INSTALL_INTERNAL = 1;
    public static final int APP_INSTALL_EXTERNAL = 2;

    public static IMountService getMountService() {
        IBinder service = ServiceManager.getService("mount");
        if (service != null) {
            return IMountService.Stub.asInterface(service);
        } else {
            Log.e(TAG, "Can't get mount service");
        }
        return null;
    }

    public static String createSdDir(File tmpPackageFile, String cid,
            String sdEncKey, int uid) {
        // Create mount point via MountService
        IMountService mountService = getMountService();
        long len = tmpPackageFile.length();
        int mbLen = (int) (len >> 20);
        if ((len - (mbLen * 1024 * 1024)) > 0) {
            mbLen++;
        }
        // Add buffer size
        mbLen++;
        if (localLOGV) Log.i(TAG, "Size of container " + mbLen + " MB " + len + " bytes");

        try {
            int rc = mountService.createSecureContainer(
                    cid, mbLen, "fat", sdEncKey, uid);
            if (rc != StorageResultCode.OperationSucceeded) {
                Log.e(TAG, "Failed to create secure container " + cid);
                return null;
            }
            String cachePath = mountService.getSecureContainerPath(cid);
            if (localLOGV) Log.i(TAG, "Created secure container " + cid +
                    " at " + cachePath);
                return cachePath;
        } catch (RemoteException e) {
            Log.e(TAG, "MountService running?");
        }
        return null;
    }

   public static String mountSdDir(String cid, String key, int ownerUid) {
    try {
        int rc = getMountService().mountSecureContainer(cid, key, ownerUid);
        if (rc != StorageResultCode.OperationSucceeded) {
            Log.i(TAG, "Failed to mount container " + cid + " rc : " + rc);
            return null;
        }
        return getMountService().getSecureContainerPath(cid);
    } catch (RemoteException e) {
        Log.e(TAG, "MountService running?");
    }
    return null;
   }

   public static boolean unMountSdDir(String cid) {
    try {
        int rc = getMountService().unmountSecureContainer(cid, true);
        if (rc != StorageResultCode.OperationSucceeded) {
            Log.e(TAG, "Failed to unmount " + cid + " with rc " + rc);
            return false;
        }
        return true;
    } catch (RemoteException e) {
        Log.e(TAG, "MountService running?");
    }
        return false;
   }

   public static boolean renameSdDir(String oldId, String newId) {
       try {
           int rc = getMountService().renameSecureContainer(oldId, newId);
           if (rc != StorageResultCode.OperationSucceeded) {
               Log.e(TAG, "Failed to rename " + oldId + " to " +
                       newId + "with rc " + rc);
               return false;
           }
           return true;
       } catch (RemoteException e) {
           Log.i(TAG, "Failed ot rename  " + oldId + " to " + newId +
                   " with exception : " + e);
       }
       return false;
   }

   public static String getSdDir(String cid) {
       try {
            return getMountService().getSecureContainerPath(cid);
        } catch (RemoteException e) {
            Log.e(TAG, "Failed to get container path for " + cid +
                " with exception " + e);
        }
        return null;
   }

    public static boolean finalizeSdDir(String cid) {
        try {
            int rc = getMountService().finalizeSecureContainer(cid);
            if (rc != StorageResultCode.OperationSucceeded) {
                Log.i(TAG, "Failed to finalize container " + cid);
                return false;
            }
            return true;
        } catch (RemoteException e) {
            Log.e(TAG, "Failed to finalize container " + cid +
                    " with exception " + e);
        }
        return false;
    }

    public static boolean destroySdDir(String cid) {
        try {
            if (localLOGV) Log.i(TAG, "Forcibly destroying container " + cid);
            int rc = getMountService().destroySecureContainer(cid, true);
            if (rc != StorageResultCode.OperationSucceeded) {
                Log.i(TAG, "Failed to destroy container " + cid);
                return false;
            }
            return true;
        } catch (RemoteException e) {
            Log.e(TAG, "Failed to destroy container " + cid +
                    " with exception " + e);
        }
        return false;
    }

    public static String[] getSecureContainerList() {
        try {
            return getMountService().getSecureContainerList();
        } catch (RemoteException e) {
            Log.e(TAG, "Failed to get secure container list with exception" +
                    e);
        }
        return null;
    }

   public static boolean isContainerMounted(String cid) {
       try {
           return getMountService().isSecureContainerMounted(cid);
       } catch (RemoteException e) {
           Log.e(TAG, "Failed to find out if container " + cid + " mounted");
       }
       return false;
   }
}