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/*
* Copyright (C) 2014 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.example.android.apprestrictionenforcer;
import android.app.Activity;
import android.app.admin.DevicePolicyManager;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
/**
* Provides UI for enabling the target app in this profile. The status of the app can be
* uninstalled, hidden, or enabled depending on the situations. This fragment shows suitable
* controls for each status.
*/
public class StatusFragment extends Fragment implements View.OnClickListener {
private TextView mTextStatus;
private Button mButtonUnhide;
private StatusUpdatedListener mListener;
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container,
@Nullable Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_status, container, false);
}
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
mTextStatus = (TextView) view.findViewById(R.id.status);
mButtonUnhide = (Button) view.findViewById(R.id.unhide);
mButtonUnhide.setOnClickListener(this);
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
mListener = (StatusUpdatedListener) activity;
}
@Override
public void onDetach() {
mListener = null;
super.onDetach();
}
@Override
public void onResume() {
super.onResume();
updateUi(getActivity());
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.unhide: {
unhideApp(getActivity());
break;
}
}
}
private void updateUi(Activity activity) {
PackageManager packageManager = activity.getPackageManager();
try {
int packageFlags;
if (Build.VERSION.SDK_INT < 24) {
//noinspection deprecation
packageFlags = PackageManager.GET_UNINSTALLED_PACKAGES;
} else {
packageFlags = PackageManager.MATCH_UNINSTALLED_PACKAGES;
}
ApplicationInfo info = packageManager.getApplicationInfo(
Constants.PACKAGE_NAME_APP_RESTRICTION_SCHEMA,
packageFlags);
DevicePolicyManager devicePolicyManager =
(DevicePolicyManager) activity.getSystemService(Activity.DEVICE_POLICY_SERVICE);
if ((info.flags & ApplicationInfo.FLAG_INSTALLED) != 0) {
if (!devicePolicyManager.isApplicationHidden(
EnforcerDeviceAdminReceiver.getComponentName(activity),
Constants.PACKAGE_NAME_APP_RESTRICTION_SCHEMA)) {
// The app is ready to enforce restrictions
// This is unlikely to happen in this sample as unhideApp() handles it.
mListener.onStatusUpdated();
} else {
// The app is installed but hidden in this profile
mTextStatus.setText(R.string.status_not_activated);
mButtonUnhide.setVisibility(View.VISIBLE);
}
} else {
// Need to reinstall the sample app
mTextStatus.setText(R.string.status_need_reinstall);
mButtonUnhide.setVisibility(View.GONE);
}
} catch (PackageManager.NameNotFoundException e) {
// Need to reinstall the sample app
mTextStatus.setText(R.string.status_need_reinstall);
mButtonUnhide.setVisibility(View.GONE);
}
}
/**
* Unhides the AppRestrictionSchema sample in case it is hidden in this profile.
*
* @param activity The activity
*/
private void unhideApp(Activity activity) {
DevicePolicyManager devicePolicyManager =
(DevicePolicyManager) activity.getSystemService(Activity.DEVICE_POLICY_SERVICE);
devicePolicyManager.setApplicationHidden(
EnforcerDeviceAdminReceiver.getComponentName(activity),
Constants.PACKAGE_NAME_APP_RESTRICTION_SCHEMA, false);
Toast.makeText(activity, "Enabled the app", Toast.LENGTH_SHORT).show();
mListener.onStatusUpdated();
}
public interface StatusUpdatedListener {
public void onStatusUpdated();
}
}
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