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/*
* Copyright (C) 2016 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.packageinstaller;
import android.annotation.Nullable;
import android.app.Activity;
import android.app.ActivityThread;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.app.Fragment;
import android.app.FragmentTransaction;
import android.app.PendingIntent;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.IPackageDeleteObserver2;
import android.content.pm.PackageInstaller;
import android.content.pm.PackageManager;
import android.content.pm.VersionedPackage;
import android.os.Bundle;
import android.os.IBinder;
import android.os.RemoteException;
import android.os.UserHandle;
import android.util.Log;
import android.widget.Toast;
/**
* Start an uninstallation, show a dialog while uninstalling and return result to the caller.
*/
public class UninstallUninstalling extends Activity implements
EventResultPersister.EventResultObserver {
private static final String LOG_TAG = UninstallUninstalling.class.getSimpleName();
private static final String UNINSTALL_ID = "com.android.packageinstaller.UNINSTALL_ID";
private static final String BROADCAST_ACTION =
"com.android.packageinstaller.ACTION_UNINSTALL_COMMIT";
static final String EXTRA_APP_LABEL = "com.android.packageinstaller.extra.APP_LABEL";
static final String EXTRA_KEEP_DATA = "com.android.packageinstaller.extra.KEEP_DATA";
private int mUninstallId;
private ApplicationInfo mAppInfo;
private IBinder mCallback;
private boolean mReturnResult;
private String mLabel;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setFinishOnTouchOutside(false);
mAppInfo = getIntent().getParcelableExtra(PackageUtil.INTENT_ATTR_APPLICATION_INFO);
mCallback = getIntent().getIBinderExtra(PackageInstaller.EXTRA_CALLBACK);
mReturnResult = getIntent().getBooleanExtra(Intent.EXTRA_RETURN_RESULT, false);
mLabel = getIntent().getStringExtra(EXTRA_APP_LABEL);
try {
if (savedInstanceState == null) {
boolean allUsers = getIntent().getBooleanExtra(Intent.EXTRA_UNINSTALL_ALL_USERS,
false);
boolean keepData = getIntent().getBooleanExtra(EXTRA_KEEP_DATA, false);
UserHandle user = getIntent().getParcelableExtra(Intent.EXTRA_USER);
// Show dialog, which is the whole UI
FragmentTransaction transaction = getFragmentManager().beginTransaction();
Fragment prev = getFragmentManager().findFragmentByTag("dialog");
if (prev != null) {
transaction.remove(prev);
}
DialogFragment dialog = new UninstallUninstallingFragment();
dialog.setCancelable(false);
dialog.show(transaction, "dialog");
mUninstallId = UninstallEventReceiver.addObserver(this,
EventResultPersister.GENERATE_NEW_ID, this);
Intent broadcastIntent = new Intent(BROADCAST_ACTION);
broadcastIntent.setFlags(Intent.FLAG_RECEIVER_FOREGROUND);
broadcastIntent.putExtra(EventResultPersister.EXTRA_ID, mUninstallId);
broadcastIntent.setPackage(getPackageName());
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, mUninstallId,
broadcastIntent, PendingIntent.FLAG_UPDATE_CURRENT
| PendingIntent.FLAG_MUTABLE);
int flags = allUsers ? PackageManager.DELETE_ALL_USERS : 0;
flags |= keepData ? PackageManager.DELETE_KEEP_DATA : 0;
try {
ActivityThread.getPackageManager().getPackageInstaller().uninstall(
new VersionedPackage(mAppInfo.packageName,
PackageManager.VERSION_CODE_HIGHEST),
getPackageName(), flags, pendingIntent.getIntentSender(),
user.getIdentifier());
} catch (RemoteException e) {
e.rethrowFromSystemServer();
}
} else {
mUninstallId = savedInstanceState.getInt(UNINSTALL_ID);
UninstallEventReceiver.addObserver(this, mUninstallId, this);
}
} catch (EventResultPersister.OutOfIdsException | IllegalArgumentException e) {
Log.e(LOG_TAG, "Fails to start uninstall", e);
onResult(PackageInstaller.STATUS_FAILURE, PackageManager.DELETE_FAILED_INTERNAL_ERROR,
null);
}
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putInt(UNINSTALL_ID, mUninstallId);
}
@Override
public void onBackPressed() {
// do nothing
}
@Override
public void onResult(int status, int legacyStatus, @Nullable String message) {
if (mCallback != null) {
// The caller will be informed about the result via a callback
final IPackageDeleteObserver2 observer = IPackageDeleteObserver2.Stub
.asInterface(mCallback);
try {
observer.onPackageDeleted(mAppInfo.packageName, legacyStatus, message);
} catch (RemoteException ignored) {
}
} else if (mReturnResult) {
// The caller will be informed about the result and might decide to display it
Intent result = new Intent();
result.putExtra(Intent.EXTRA_INSTALL_RESULT, legacyStatus);
setResult(status == PackageInstaller.STATUS_SUCCESS ? Activity.RESULT_OK
: Activity.RESULT_FIRST_USER, result);
} else {
// This is the rare case that the caller did not ask for the result, but wanted to be
// notified via onActivityResult when the installation finishes
if (status != PackageInstaller.STATUS_SUCCESS) {
Toast.makeText(this, getString(R.string.uninstall_failed_app, mLabel),
Toast.LENGTH_LONG).show();
}
}
finish();
}
@Override
protected void onDestroy() {
UninstallEventReceiver.removeObserver(this, mUninstallId);
super.onDestroy();
}
/**
* Dialog that shows that the app is uninstalling.
*/
public static class UninstallUninstallingFragment extends DialogFragment {
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(getActivity());
dialogBuilder.setCancelable(false);
dialogBuilder.setMessage(getActivity().getString(R.string.uninstalling_app,
((UninstallUninstalling) getActivity()).mLabel));
Dialog dialog = dialogBuilder.create();
dialog.setCanceledOnTouchOutside(false);
return dialog;
}
}
}
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