如何使用Android L中的“PackageInstaller”類安裝/更新/刪除APK？

Question

Plz檢查下面的classe並給我如何使用它們的建議https://developer.android.com/reference/android/content/pm/PackageInstaller.html https://developer.android.com/reference/android/content /pm/PackageInstaller.Session.html

所以請給我一個安裝/更新/刪除應用程序的示例。 新應用程序是否可能安裝在設備配置文件所有者中？

Answer 1

沒有Android M以上的系統權限就可以。

if ((mPm.checkUidPermission(android.Manifest.permission.INSTALL_PACKAGES, installerUid)
        == PackageManager.PERMISSION_GRANTED)
        || (installerUid == Process.ROOT_UID)
        || mIsInstallerDeviceOwner) {
    mPermissionsAccepted = true;
} else {
    mPermissionsAccepted = false;
}

---

設備所有者靜默安裝和卸載應用程序：

設備所有者現在可以使用PackageInstaller API以獨立於Google Play for Work的方式靜默安裝和卸載應用程序。

更多鏈接。

---

這可以在Android 6.0及更高版本中使用。

• 使您的應用成為設備所有者。

一旦您的應用獲得了設備所有者權限，我們就可以無需任何用戶干預即可靜默安裝，卸載和更新。

public static boolean installPackage(Context context, InputStream in, String packageName)
        throws IOException {
    PackageInstaller packageInstaller = context.getPackageManager().getPackageInstaller();
    PackageInstaller.SessionParams params = new PackageInstaller.SessionParams(
            PackageInstaller.SessionParams.MODE_FULL_INSTALL);
    params.setAppPackageName(packageName);
    // set params
    int sessionId = packageInstaller.createSession(params);
    PackageInstaller.Session session = packageInstaller.openSession(sessionId);
    OutputStream out = session.openWrite("COSU", 0, -1);
    byte[] buffer = new byte[65536];
    int c;
    while ((c = in.read(buffer)) != -1) {
        out.write(buffer, 0, c);
    }
    session.fsync(out);
    in.close();
    out.close();

    session.commit(createIntentSender(context, sessionId));
    return true;
}



private static IntentSender createIntentSender(Context context, int sessionId) {
        PendingIntent pendingIntent = PendingIntent.getBroadcast(
                context,
                sessionId,
                new Intent(ACTION_INSTALL_COMPLETE),
                0);
        return pendingIntent.getIntentSender();
    }

卸載：

String appPackage = "com.your.app.package";
Intent intent = new Intent(getActivity(), getActivity().getClass());
PendingIntent sender = PendingIntent.getActivity(getActivity(), 0, intent, 0);
PackageInstaller mPackageInstaller = getActivity().getPackageManager().getPackageInstaller();
mPackageInstaller.uninstall(appPackage, sender.getIntentSender());

Git repo在這里 。

Answer 2

您無法使用PackageInstaller.Session.commit（）在新創建的用戶中靜默安裝第三方應用程序，而無需特定的“權限”。
你要么需要：

• INSTALL_PACKAGES權限。 但是此權限不適用於第三方應用程序。 因此，即使使用您的個人資料所有者應用，您也不會擁有此特定權限。
• 以ROOT_UID運行該過程。 這意味着您必須根設備。

來自Android源代碼 ：

if ((mPm.checkUidPermission(android.Manifest.permission.INSTALL_PACKAGES, installerUid) == PackageManager.PERMISSION_GRANTED) 
   || (installerUid == Process.ROOT_UID)) {
    mPermissionsAccepted = true;
} else {
    mPermissionsAccepted = false;
}

如果您既沒有root訪問權限也沒有INSTALL_PACKAGES權限，則會提示用戶詢問他是否確認了權限。 然后在PackageInstaller's會話的提交process中使用此確認。 顯然，在這種情況下，這不是透明的，因為用戶必須手動確認您的應用程序的安裝。

Answer 3

提供的安裝方法@amalBit對我不起作用。 這很奇怪，因為這是在Google Sample中實現的方式 。

這個答案幫助我找到了解決方案。 我不得不改變代碼的某些部分。 這是我的實現：

public static void installPackage(Context context, InputStream inputStream)
        throws IOException {
    PackageInstaller packageInstaller = context.getPackageManager().getPackageInstaller();
    int sessionId = packageInstaller.createSession(new PackageInstaller
            .SessionParams(PackageInstaller.SessionParams.MODE_FULL_INSTALL));
    PackageInstaller.Session session = packageInstaller.openSession(sessionId);

    long sizeBytes = 0;

    OutputStream out = null;
    out = session.openWrite("my_app_session", 0, sizeBytes);

    int total = 0;
    byte[] buffer = new byte[65536];
    int c;
    while ((c = inputStream.read(buffer)) != -1) {
        total += c;
        out.write(buffer, 0, c);
    }
    session.fsync(out);
    inputStream.close();
    out.close();

    // fake intent
    IntentSender statusReceiver = null;
    Intent intent = new Intent(context, SomeActivity.class);
    PendingIntent pendingIntent = PendingIntent.getBroadcast(context,
            1337111117, intent, PendingIntent.FLAG_UPDATE_CURRENT);

    session.commit(pendingIntent.getIntentSender());
    session.close();
}

可以像這樣調用此方法：

        InputStream inputStream = getActivity().getAssets().open("my_awesome_app.apk");
        InstallationHelper.installPackage(getActivity(), inputStream);

Answer 4

雖然我的設備所有者限制用戶安裝應用程序和未知來源，但這對我也有用。 即使我將此示例作為設備管理員運行，我也得到了java.lang.SecurityException: User restriction prevents installing.

openSession正在檢查權限。 通過這種簡單的修改，可以僅在短方法調用期間重置用戶限制。

public static DevicePolicyManager getDpm(Context context) {
    return (DevicePolicyManager)context.getSystemService(Context.DEVICE_POLICY_SERVICE);
}

public static ComponentName getAdmin(Context context) {
    return new ComponentName(context, MyDevicePolicyReceiver.class);
}

public static void addMyRestrictions(Context context) {
   getDpm(context).addUserRestriction(getAdmin(context), UserManager.DISALLOW_INSTALL_APPS);
   getDpm(context).addUserRestriction(getAdmin(context), UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES);
}

public static void clearMyRestrictions(Context context) {    
   getDpm(context).clearUserRestriction(getAdmin(context), UserManager.DISALLOW_INSTALL_APPS);
   getDpm(context).clearUserRestriction(getAdmin(context), UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES);
}

public static void installPackage(Context context, InputStream inputStream)
    throws IOException {
    PackageInstaller packageInstaller = context.getPackageManager().getPackageInstaller();
    int sessionId = packageInstaller.createSession(new PackageInstaller
        .SessionParams(PackageInstaller.SessionParams.MODE_FULL_INSTALL));

    //openSession checks for user restrictions
    clearMyRestrictions(context);
    PackageInstaller.Session session = packageInstaller.openSession(sessionId);
    addMyRestrictions(context);

    long sizeBytes = 0;

    OutputStream out = null;
    out = session.openWrite("my_app_session", 0, sizeBytes);

    int total = 0;
    byte[] buffer = new byte[65536];
    int c;
    while ((c = inputStream.read(buffer)) != -1) {
        total += c;
        out.write(buffer, 0, c);
    }
    session.fsync(out);
    inputStream.close();
    out.close();

    // fake intent
    IntentSender statusReceiver = null;
    Intent intent = new Intent(context, SomeActivity.class);
    PendingIntent pendingIntent = PendingIntent.getBroadcast(context,
        1337111117, intent, PendingIntent.FLAG_UPDATE_CURRENT);

    session.commit(pendingIntent.getIntentSender());
    session.close();
}

請注意異常處理。

Answer 5

你只需清除你的限制

public static DevicePolicyManager getDpm(Context context) {
    return (DevicePolicyManager) context.getSystemService(Context.DEVICE_POLICY_SERVICE);
}

public static ComponentName getAdmin(Context context) {
    return new ComponentName(context, MyDevicePolicyReceiver.class);
}

public static void addMyRestrictions(Context context) {
    getDpm(context).addUserRestriction(getAdmin(context), UserManager.DISALLOW_INSTALL_APPS);
    getDpm(context).addUserRestriction(getAdmin(context), UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES);
}

public static void clearMyRestrictions(Context context) {
    getDpm(context).clearUserRestriction(getAdmin(context), UserManager.DISALLOW_INSTALL_APPS);
    getDpm(context).clearUserRestriction(getAdmin(context), UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES);
}

public static void installPackage(Context context, InputStream inputStream)
        throws IOException {
    PackageInstaller packageInstaller = context.getPackageManager().getPackageInstaller();
    int sessionId = packageInstaller.createSession(new PackageInstaller
            .SessionParams(PackageInstaller.SessionParams.MODE_FULL_INSTALL));

    //openSession checks for user restrictions
    clearMyRestrictions(context);
    PackageInstaller.Session session = packageInstaller.openSession(sessionId);

    long sizeBytes = 0;

    OutputStream out = null;
    out = session.openWrite("my_app_session", 0, sizeBytes);

    int total = 0;
    byte[] buffer = new byte[65536];
    int c;
    while ((c = inputStream.read(buffer)) != -1) {
        total += c;
        out.write(buffer, 0, c);
    }
    session.fsync(out);
    inputStream.close();
    out.close();

    // fake intent
    IntentSender statusReceiver = null;
    Intent intent = new Intent(context, SomeActivity.class);
    PendingIntent pendingIntent = PendingIntent.getBroadcast(context,
            1337111117, intent, PendingIntent.FLAG_UPDATE_CURRENT);

    session.commit(pendingIntent.getIntentSender());
    session.close();
}

Answer 6

在Android Api-21下面是代碼片段，我們可以通過它靜默安裝apk。

private void runInstallWrite() throws IOException, RemoteException {
        long sizeBytes = -1;

        String opt;
        while ((opt = nextOption()) != null) {
            if (opt.equals("-S")) {
                sizeBytes = Long.parseLong(nextOptionData());
            } else {
                throw new IllegalArgumentException("Unknown option: " + opt);
            }
        }

        final int sessionId = Integer.parseInt(nextArg());
        final String splitName = nextArg();

        String path = nextArg();
        if ("-".equals(path)) {
            path = null;
        } else if (path != null) {
            final File file = new File(path);
            if (file.isFile()) {
                sizeBytes = file.length();
            }
        }

        final SessionInfo info = mInstaller.getSessionInfo(sessionId);

        PackageInstaller.Session session = null;
        InputStream in = null;
        OutputStream out = null;
        try {
            session = new PackageInstaller.Session(mInstaller.openSession(sessionId));

            if (path != null) {
                in = new FileInputStream(path);
            } else {
                in = new SizedInputStream(System.in, sizeBytes);
            }
            out = session.openWrite(splitName, 0, sizeBytes);

            int total = 0;
            byte[] buffer = new byte[65536];
            int c;
            while ((c = in.read(buffer)) != -1) {
                total += c;
                out.write(buffer, 0, c);

                if (info.sizeBytes > 0) {
                    final float fraction = ((float) c / (float) info.sizeBytes);
                    session.addProgress(fraction);
                }
            }
            session.fsync(out);

            System.out.println("Success: streamed " + total + " bytes");
        } finally {
            IoUtils.closeQuietly(out);
            IoUtils.closeQuietly(in);
            IoUtils.closeQuietly(session);
        }
    }

上面的代碼是由框架了這里

我可以在LoLiipop中將此代碼與device_owner或普通用戶一起使用嗎？

答案 - 否由於在android框架中有@hide標簽的apis，雖然在API 21中引入了PackageManager.Session但我們不能使用新的PAckageManager.Session（），因為它在API 21中@hide。

如果您仍想通過framework.jar使用此代碼，則需要構建Lolippop源代碼並從/..../ framework.jar中提取jar並調用apis以上。

Answer 7

安裝：

Intent promptInstall = new Intent(Intent.ACTION_VIEW);
        promptInstall.setDataAndType(Uri.fromFile(new File(Environment
                .getExternalStorageDirectory() + "/download/" + APK_NAME)),
                "application/vnd.android.package-archive");
        promptInstall.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(promptInstall);

卸載：

Intent intent = new Intent(Intent.ACTION_DELETE, Uri.fromParts("package",
getPackageManager().getPackageArchiveInfo(apkUri.getPath(), 0).packageName,null));
startActivity(intent);