Java tutorial
/* * PowerSwitch by Max Rosin & Markus Ressel * Copyright (C) 2015 Markus Ressel * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package eu.power_switch.gui.dialog; import android.app.Dialog; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.graphics.Color; import android.os.Bundle; import android.support.annotation.NonNull; import android.support.design.widget.TextInputEditText; import android.support.v4.app.DialogFragment; import android.support.v4.content.LocalBroadcastManager; import android.support.v7.app.AlertDialog; import android.support.v7.widget.RecyclerView; import android.support.v7.widget.StaggeredGridLayoutManager; import android.text.Editable; import android.text.TextUtils; import android.text.TextWatcher; import android.view.LayoutInflater; import android.view.View; import android.view.WindowManager; import android.widget.CompoundButton; import android.widget.LinearLayout; import java.util.ArrayList; import java.util.Collections; import java.util.Comparator; import java.util.HashSet; import java.util.Set; import eu.power_switch.R; import eu.power_switch.gui.StatusMessageHandler; import eu.power_switch.gui.adapter.ContactRecyclerViewAdapter; import eu.power_switch.gui.listener.CheckBoxInteractionListener; import eu.power_switch.phone.Contact; import eu.power_switch.phone.ContactHelper; import eu.power_switch.shared.constants.LocalBroadcastConstants; /** * Created by Markus on 08.04.2016. */ public class AddPhoneNumberDialog extends DialogFragment { public static final String KEY_PHONE_NUMBER = "phoneNumber"; public static final Comparator<Contact> ALPHABETIC = new Comparator<Contact>() { @Override public int compare(Contact lhs, Contact rhs) { return lhs.getName().compareToIgnoreCase(rhs.getName()); } }; private Dialog dialog; private int defaultTextColor; private View contentView; private LinearLayout layoutLoading; private TextInputEditText editText_phoneNumber; private ArrayList<Contact> contacts = new ArrayList<>(); private ContactRecyclerViewAdapter contactRecyclerViewAdapter; private RecyclerView recyclerViewContacts; private Set<String> checkedNumbers = new HashSet<>(); /** * Used to notify the setup page that some info has changed * * @param context any suitable context */ public static void sendPhoneNumbersAddedBroadcast(Context context, Set<String> phoneNumbers) { Intent intent = new Intent(LocalBroadcastConstants.INTENT_CALL_PHONE_NUMBER_ADDED); intent.putStringArrayListExtra(KEY_PHONE_NUMBER, new ArrayList<>(phoneNumbers)); LocalBroadcastManager.getInstance(context).sendBroadcast(intent); } @NonNull @Override public Dialog onCreateDialog(Bundle savedInstanceState) { AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); LayoutInflater inflater = getActivity().getLayoutInflater(); contentView = inflater.inflate(R.layout.dialog_add_phone_number, null); builder.setView(contentView); editText_phoneNumber = (TextInputEditText) contentView.findViewById(R.id.editText_phoneNumber); editText_phoneNumber.addTextChangedListener(new TextWatcher() { @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { } @Override public void onTextChanged(CharSequence s, int start, int before, int count) { } @Override public void afterTextChanged(Editable s) { checkValidity(); } }); layoutLoading = (LinearLayout) contentView.findViewById(R.id.layoutLoading); recyclerViewContacts = (RecyclerView) contentView.findViewById(R.id.recyclerView_contacts); contactRecyclerViewAdapter = new ContactRecyclerViewAdapter(getActivity(), contacts); contactRecyclerViewAdapter.setCheckBoxInteractionListener(new CheckBoxInteractionListener() { @Override public void onCheckedChangedByUser(CompoundButton buttonView, boolean isChecked) { String number = (String) buttonView.getTag(); if (isChecked) { checkedNumbers.add(number); } else { if (checkedNumbers.contains(number)) { checkedNumbers.remove(number); } } checkValidity(); } }); recyclerViewContacts.setAdapter(contactRecyclerViewAdapter); StaggeredGridLayoutManager layoutManager = new StaggeredGridLayoutManager(1, StaggeredGridLayoutManager.VERTICAL); recyclerViewContacts.setLayoutManager(layoutManager); builder.setTitle(R.string.add_phone_nummbers); builder.setPositiveButton(R.string.add, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { try { sendPhoneNumbersAddedBroadcast(getContext(), getSelectedPhoneNumbers()); } catch (Exception e) { StatusMessageHandler.showErrorMessage(getTargetFragment().getView().findViewById(R.id.listView), e); } } }); builder.setNeutralButton(android.R.string.cancel, null); setPositiveButtonVisibility(false); dialog = builder.create(); dialog.setCanceledOnTouchOutside(false); // prevent close dialog on touch outside window dialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN); dialog.show(); defaultTextColor = ((AlertDialog) dialog).getButton(AlertDialog.BUTTON_POSITIVE).getTextColors() .getDefaultColor(); checkValidity(); refreshContacts(); return dialog; } private void refreshContacts() { contacts.clear(); contacts.addAll(ContactHelper.getContacts(getActivity())); Collections.sort(contacts, ALPHABETIC); contactRecyclerViewAdapter.notifyDataSetChanged(); } private Set<String> getSelectedPhoneNumbers() { if (!TextUtils.isEmpty(editText_phoneNumber.getText().toString().trim())) { checkedNumbers.add(editText_phoneNumber.getText().toString().trim()); } return checkedNumbers; } private void checkValidity() { if (TextUtils.isEmpty(editText_phoneNumber.getText().toString().trim()) && checkedNumbers.isEmpty()) { setPositiveButtonVisibility(false); } else { setPositiveButtonVisibility(true); } } private void setPositiveButtonVisibility(boolean visibility) { if (dialog != null) { if (visibility) { ((AlertDialog) dialog).getButton(AlertDialog.BUTTON_POSITIVE).setTextColor(defaultTextColor); ((AlertDialog) dialog).getButton(AlertDialog.BUTTON_POSITIVE).setClickable(true); } else { ((AlertDialog) dialog).getButton(AlertDialog.BUTTON_POSITIVE).setTextColor(Color.GRAY); ((AlertDialog) dialog).getButton(AlertDialog.BUTTON_POSITIVE).setClickable(false); } } } }