Java tutorial
/* * This source is part of the * _____ ___ ____ * __ / / _ \/ _ | / __/___ _______ _ * / // / , _/ __ |/ _/_/ _ \/ __/ _ `/ * \___/_/|_/_/ |_/_/ (_)___/_/ \_, / * /___/ * repository. * * Copyright (C) 2014-2015 Carmen Alvarez (c@rmen.ca) * * 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 ca.rmen.android.networkmonitor.app.dialog; import android.app.Dialog; import android.content.DialogInterface; import android.content.DialogInterface.OnCancelListener; import android.content.DialogInterface.OnClickListener; import android.content.DialogInterface.OnDismissListener; import android.os.Bundle; import android.support.annotation.NonNull; import android.support.v4.app.DialogFragment; import android.support.v4.app.FragmentActivity; import android.support.v7.app.AlertDialog; import ca.rmen.android.networkmonitor.Constants; import ca.rmen.android.networkmonitor.util.Log; /** * A dialog fragment with a title, message, ok and cancel buttons. This is based on ConfirmDialogFragment from the scrum chatter project. */ public class ConfirmDialogFragment extends DialogFragment { // NO_UCD (use default) private static final String TAG = Constants.TAG + ConfirmDialogFragment.class.getSimpleName(); /** * An activity which contains a confirmation dialog fragment should implement this interface to be notified if the user clicks ok on the dialog. */ public interface DialogButtonListener { void onOkClicked(int actionId, Bundle extras); void onCancelClicked(int actionId, Bundle extras); } public ConfirmDialogFragment() { super(); } /** * @return a Dialog with a title, message, ok, and cancel buttons. */ @Override @NonNull public Dialog onCreateDialog(Bundle savedInstanceState) { Log.v(TAG, "onCreateDialog: savedInstanceState = " + savedInstanceState); AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); Bundle arguments = getArguments(); builder.setTitle(arguments.getString(DialogFragmentFactory.EXTRA_TITLE)); builder.setMessage(arguments.getString(DialogFragmentFactory.EXTRA_MESSAGE)); final int actionId = arguments.getInt(DialogFragmentFactory.EXTRA_ACTION_ID); final Bundle extras = arguments.getBundle(DialogFragmentFactory.EXTRA_EXTRAS); OnClickListener positiveListener = null; OnClickListener negativeListener = null; if (getActivity() instanceof DialogButtonListener) { positiveListener = new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { Log.v(TAG, "onClick (positive button"); FragmentActivity activity = getActivity(); if (activity == null) Log.w(TAG, "User clicked on dialog after it was detached from activity. Monkey?"); else ((DialogButtonListener) activity).onOkClicked(actionId, extras); } }; negativeListener = new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { Log.v(TAG, "onClick (negative button"); FragmentActivity activity = getActivity(); if (activity == null) Log.w(TAG, "User clicked on dialog after it was detached from activity. Monkey?"); else ((DialogButtonListener) activity).onCancelClicked(actionId, extras); } }; } builder.setNegativeButton(android.R.string.cancel, negativeListener); builder.setPositiveButton(android.R.string.ok, positiveListener); if (getActivity() instanceof OnCancelListener) builder.setOnCancelListener((OnCancelListener) getActivity()); final Dialog dialog = builder.create(); if (getActivity() instanceof OnDismissListener) dialog.setOnDismissListener((OnDismissListener) getActivity()); return dialog; } @Override public void onDismiss(DialogInterface dialog) { Log.v(TAG, "onDismiss"); super.onDismiss(dialog); if (getActivity() instanceof OnDismissListener) ((OnDismissListener) getActivity()).onDismiss(dialog); } }