Change packagename to telephony

Also move it under package network, so all of them belong to
com.android.settings.network.telephony.

Bug: 114749736
Test: RunSettingsRoboTests
Change-Id: I35dbdcd5cc9dab939b0a3efccc8897b9a92338d1

src/com/android/settings/network/telephony/RoamingDialogFragment.java

@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2018 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.network.telephony;
+
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.DialogInterface.OnClickListener;
+import android.os.Bundle;
+import android.os.PersistableBundle;
+import android.telephony.CarrierConfigManager;
+
+import androidx.fragment.app.DialogFragment;
+import androidx.fragment.app.Fragment;
+
+
+import com.android.settings.R;
+import com.android.settings.core.instrumentation.InstrumentedDialogFragment;
+
+/**
+ * A dialog fragment that asks the user if they are sure they want to turn on data roaming
+ * to avoid accidental charges.
+ */
+public class RoamingDialogFragment extends InstrumentedDialogFragment implements OnClickListener {
+
+    public static final String SUB_ID_KEY = "sub_id_key";
+
+    private CarrierConfigManager mCarrierConfigManager;
+    private int mSubId;
+
+    /**
+     * The interface we expect a host activity to implement.
+     */
+    public interface RoamingDialogListener {
+        void onPositiveButtonClick(DialogFragment dialog);
+    }
+
+    // the host activity which implements the listening interface
+    private RoamingDialogListener mListener;
+
+    @Override
+    public void onAttach(Context context) {
+        super.onAttach(context);
+        Bundle args = getArguments();
+        mSubId = args.getInt(SUB_ID_KEY);
+        mCarrierConfigManager = new CarrierConfigManager(context);
+
+        Fragment fragment = getTargetFragment();
+        try {
+            mListener = (RoamingDialogListener) fragment;
+        } catch (ClassCastException e) {
+            throw new ClassCastException(fragment.toString() +
+                    "must implement RoamingDialogListener");
+        }
+    }
+
+    @Override
+    public Dialog onCreateDialog(Bundle savedInstanceState) {
+        AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
+        int title = R.string.roaming_alert_title;
+        PersistableBundle carrierConfig = mCarrierConfigManager.getConfigForSubId(mSubId);
+        if (carrierConfig != null && carrierConfig.getBoolean(
+                CarrierConfigManager.KEY_CHECK_PRICING_WITH_CARRIER_FOR_DATA_ROAMING_BOOL)) {
+            title = R.string.roaming_check_price_warning;
+        }
+        builder.setMessage(getResources().getString(R.string.roaming_warning))
+                .setTitle(title)
+                .setIconAttribute(android.R.attr.alertDialogIcon)
+                .setPositiveButton(android.R.string.yes, this)
+                .setNegativeButton(android.R.string.no, this);
+        return builder.create();
+    }
+
+    @Override
+    public int getMetricsCategory() {
+        //TODO(b/114749736): add category for roaming dialog
+        return 0;
+    }
+
+    @Override
+    public void onClick(DialogInterface dialog, int which) {
+        // let the host know that the positive button has been clicked
+        if (which == dialog.BUTTON_POSITIVE) {
+            mListener.onPositiveButtonClick(this);
+        }
+    }
+}