Dialog box for networks without an Internet connection

            </intent-filter>

        </activity>

        <activity android:name=".wifi.WifiNoInternetDialog"

                  android:clearTaskOnLaunch="true"

                  android:excludeFromRecents="true"

                  android:exported="true"

                  android:permission="android.permission.CONNECTIVITY_INTERNAL"

                  android:taskAffinity=""

                  android:theme="@*android:style/Theme.Material.Light.Dialog.Alert">

            <intent-filter>

                <action android:name="android.net.conn.PROMPT_UNVALIDATED" />

                <category android:name="android.intent.category.DEFAULT" />

            </intent-filter>

        </activity>

        <!-- Suspect activity alias: targetActivity is Settings itself, does not define a name. Remove? -->

        <activity-alias android:name=".wifi.WifiApSettings"

                android:targetActivity="Settings">

    <!-- Wifi settings button to connect in to a Hotspot. [CHAR LIMIT=50]-->

    <string name="wifi_hotspot_connect">CONNECT</string>

    <!-- Dialog text to tell the user that the selected network does not have Internet access. -->

    <string name="no_internet_access_text">This network has no Internet access. Use this network anyway?</string>

    <string name="no_internet_access_remember">Don\'t ask again for this network</string>

    <!-- Button label to connect to a Wi-Fi network -->

    <string name="wifi_connect">Connect</string>

    <!-- Failured notification for connect -->

/*

 * Copyright (C) 2015 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.settings.wifi;

import android.content.Context;

import android.content.DialogInterface;

import android.content.Intent;

import android.net.ConnectivityManager;

import android.net.ConnectivityManager.NetworkCallback;

import android.net.Network;

import android.net.NetworkInfo;

import android.net.NetworkCapabilities;

import android.net.NetworkRequest;

import android.os.Bundle;

import android.util.Log;

import android.view.LayoutInflater;

import android.view.View;

import android.widget.CheckBox;

import android.widget.TextView;

import com.android.internal.app.AlertActivity;

import com.android.internal.app.AlertController;

import com.android.settings.R;

public final class WifiNoInternetDialog extends AlertActivity implements

        DialogInterface.OnClickListener {

    private static final String TAG = "WifiNoInternetDialog";

    private ConnectivityManager mCM;

    private Network mNetwork;

    private String mNetworkName;

    private ConnectivityManager.NetworkCallback mNetworkCallback;

    private CheckBox mAlwaysAllow;

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        final Intent intent = getIntent();

        if (intent == null ||

                !intent.getAction().equals(ConnectivityManager.ACTION_PROMPT_UNVALIDATED)) {

            Log.e(TAG, "Unexpected intent " + intent + ", exiting");

            finish();

            return;

        }

        mNetwork = intent.getParcelableExtra(ConnectivityManager.EXTRA_NETWORK);

        if (mNetwork == null) {

            Log.e(TAG, "ACTION_PROMPT_UNVALIDATED for null network, exiting");

            finish();

            return;

        }

        // TODO: add a registerNetworkCallback(Network network, NetworkCallback networkCallback) and

        // simplify this.

        final NetworkRequest.Builder builder = new NetworkRequest.Builder();

        for (int i = 0; i < 256; i++) {

            try {

                builder.removeCapability(i);

            } catch (IllegalArgumentException e) {}

        }

        final NetworkRequest request = builder.build();

        mNetworkCallback = new NetworkCallback() {

            public void onLost(Network network) {

                // Close the dialog if the network disconnects.

                if (mNetwork.equals(network)) {

                    Log.d(TAG, "Network " + mNetwork + " disconnected");

                    finish();

                }

            }

            // TODO: implement onNetworkCapabilitiesChanged so we can close the dialog if the

            // network is now validated.

        };

        mCM = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);

        mCM.registerNetworkCallback(request, mNetworkCallback);

        final NetworkInfo ni = mCM.getNetworkInfo(mNetwork);

        if (ni == null || !ni.isConnectedOrConnecting()) {

            Log.d(TAG, "Network " + mNetwork + " is not connected: " + ni);

            finish();

            return;

        }

        mNetworkName = ni.getExtraInfo();

        if (mNetworkName != null) {

            mNetworkName = mNetworkName.replaceAll("^\"|\"$", "");  // Remove double quotes

        }

        createDialog();

    }

    private void createDialog() {

        mAlert.setIcon(R.drawable.ic_settings_wireless);

        final AlertController.AlertParams ap = mAlertParams;

        ap.mTitle = mNetworkName;

        ap.mMessage = getString(R.string.no_internet_access_text);

        ap.mPositiveButtonText = getString(android.R.string.ok);

        ap.mNegativeButtonText = getString(android.R.string.cancel);

        ap.mPositiveButtonListener = this;

        ap.mNegativeButtonListener = this;

        final LayoutInflater inflater = LayoutInflater.from(ap.mContext);

        final View checkbox = inflater.inflate(

                com.android.internal.R.layout.always_use_checkbox, null);

        ap.mView = checkbox;

        mAlwaysAllow = (CheckBox) checkbox.findViewById(com.android.internal.R.id.alwaysUse);

        mAlwaysAllow.setText(getString(R.string.no_internet_access_remember));

        setupAlert();

    }

    @Override

    protected void onDestroy() {

        if (mNetworkCallback != null) {

            mCM.unregisterNetworkCallback(mNetworkCallback);

            mNetworkCallback = null;

        }

        super.onDestroy();

    }

    public void onClick(DialogInterface dialog, int which) {

        final boolean accept = (which == BUTTON_POSITIVE);

        final String action = (accept ? "Connect" : "Ignore");

        final boolean always = mAlwaysAllow.isChecked();

        switch (which) {

            case BUTTON_POSITIVE:

            case BUTTON_NEGATIVE:

                mCM.setAcceptUnvalidated(mNetwork, accept, always);

                Log.d(TAG, action +  " network=" + mNetwork + (always ? " and remember" : ""));

                break;

            default:

                break;

        }

    }

}