Java tutorial
/* * 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.iklimov.alexandria.fragments; /** * Created by Igor Klimov on 1/20/2016. */ import android.app.AlertDialog; import android.content.Context; import android.content.DialogInterface; import android.net.ConnectivityManager; import android.net.NetworkInfo; import android.os.Bundle; import android.support.annotation.NonNull; import android.support.v4.app.DialogFragment; import android.view.View; import android.widget.Button; import com.iklimov.alexandria.activities.SignInActivity; /** * Created by Igor Klimov on 12/11/2015. */ public class NoInternet extends DialogFragment { @NonNull @Override public android.app.Dialog onCreateDialog(Bundle savedInstanceState) { AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); builder.setTitle("No Internet connection").setMessage("Please check your connection and retry") .setPositiveButton("Retry", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { } }); return builder.create(); } @Override public void onStart() { super.onStart(); final AlertDialog d = (AlertDialog) getDialog(); if (d != null) { Button positiveButton = d.getButton(AlertDialog.BUTTON_POSITIVE); positiveButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { ConnectivityManager systemService = (ConnectivityManager) getActivity() .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo activeNetworkInfo = systemService.getActiveNetworkInfo(); if (activeNetworkInfo != null && activeNetworkInfo.isConnected()) { if (getTag().equals("1")) { ((SignInActivity) getActivity()).new SyncFavorites().execute(); } d.dismiss(); } } }); } } }