Develop Reference

How would i make this repeat?

I am trying to make an alarm notification and I want it to repeat when this 2 radio buttons are active.
I have this code :
private void Button_Clicked(object sender, EventArgs e) {
if (Radio_Msg.IsChecked) {
CrossToastPopUp.Current.ShowToastWarning("Alarme");
}
if (Radio_Notif.IsChecked) {
CrossLocalNotifications.Current.Show("Miguel", "Módulo 19 – Tecnologias de Acesso a Base de Dados");
}
if (Radio_Msg.IsChecked && RadioRepetir == true) {
CrossToastPopUp.Current.ShowToastMessage("Tesddddte");
Thread.Sleep(500);
CrossToastPopUp.Current.ShowToastMessage("Teste");
}
}
But it doesn't repeat it, it only prints one notification out.

if(Radio_Msg.IsChecked && RadioRepetir == true)
{
var minutes = TimeSpan.FromMinutes(0.2);
Device.StartTimer(minutes, () => {
CrossToastPopUp.Current.ShowToastWarning("Alarme");
return true;
});

Flutter Blue Setting Notifications

I've been using flutter Blue for some now and I'm stuck on the following:
I'm using the example App I downloaded on https://github.com/pauldemarco/flutter_blue, through here the basic idea is that as soon as I connect to my bluetooth device it starts checking if the service "FFE0" exists and then the characteristic "FFE1".
This Characteristic spits out random strings I need for my project.
Image of screen with characteristic open
Through the screen I can see the above is true I just need to somehow automatically set notifications for the characteristic as soon as it connects to the bluetooth device.
This is some current code i'm testing out in the _Connect Function.
_connect(BluetoothDevice d) async {
device = d;
// Connect to device
deviceConnection = _flutterBlue
.connect(device, timeout: const Duration(seconds: 4))
.listen(
null,
onDone: _disconnect,
);
// Update the connection state immediately
device.state.then((s) {
setState(() {
deviceState = s;
});
});
// Subscribe to connection changes
deviceStateSubscription = device.onStateChanged().listen((s) {
setState(() {
deviceState = s;
});
if (s == BluetoothDeviceState.connected) {
device.discoverServices().then((service) {
service.forEach((_service){
var characteristics = _service.characteristics;
_service.characteristics.map((c) {
print(c);
});
for(BluetoothCharacteristic _characteristic in characteristics) {
device.readCharacteristic(_characteristic).then((_value){
print(_value);
if (_value.contains("FFE0")) {
print("Found!!");
// do something
}
});
}
});
setState(() {
services = service;
});
_getServices();
});
}
});
}
I maybe someone has a suggestion on how to approach my problem.
Robin

I found https://github.com/Sensirion/smart-gadget-flutter/tree/master/lib and I was able to fix my problem using the following code:
for(BluetoothService service in services) {
for(BluetoothCharacteristic c in service.characteristics) {
if(c.uuid == new Guid("0000ffe1-0000-1000-8000-00805f9b34fb")) {
_setNotification(c);
} else {
print("Nope");
}
}
}
This was added in the _connect function.
_connect(BluetoothDevice d) async {
device = d;
// Connect to device
deviceConnection = _flutterBlue
.connect(device, timeout: const Duration(seconds: 4))
.listen(
null,
onDone: _disconnect,
);
// Update the connection state immediately
device.state.then((s) {
setState(() {
deviceState = s;
});
});
// Subscribe to connection changes
deviceStateSubscription = device.onStateChanged().listen((s) {
setState(() {
deviceState = s;
});
if (s == BluetoothDeviceState.connected) {
device.discoverServices().then((s) {
services = s;
for(BluetoothService service in services) {
for(BluetoothCharacteristic c in service.characteristics) {
if(c.uuid == new Guid("0000ffe1-0000-1000-8000-00805f9b34fb")) {
_setNotification(c);
} else {
print("Nope");
}
}
}
setState(() {
services = s;
});
_getServices();
});
}
});
}

Why the the httpInterceptor got rejected when the App starts even when there is network?

I'm using the following code to show a message when there is no network. It works well when testing the app in airplane mode. However, it always shows the popup even when there is network when the app code start (rejection.status === 0). How to workaround it?
.config(function($provide, $httpProvider) {
$provide.factory('httpInterceptor', function($q, $injector) {
return {
response: function(response) {
return response || $q.when(response);
},
responseError: function(rejection) {
var interactiveService = $injector.get('interactiveService');
if (rejection.status === 0 || rejection.status === -1) {
interactiveService.showPopup('The internet is disconnected on your device.' + rejection.status);
}
return $q.reject(rejection);
}
};
});
$httpProvider.interceptors.push('httpInterceptor');
})

If it helps try this
.config(function($provide, $httpProvider) {
$provide.factory('httpInterceptor', function($q, $injector) {
return {
response: function(response) {
return response || $q.when(response);
},
responseError: function(rejection) {
var interactiveService = $injector.get('interactiveService');
/************** New code starts*******/
var networkState = navigator.connection.type;
if(networkState === Connection.NONE){
interactiveService.showPopup('The internet is disconnected on your device.' + rejection.status);
}
/************** New code ends*******/
return $q.reject(rejection);
}
};
});
$httpProvider.interceptors.push('httpInterceptor');
})

Lokijs DB data removed after rerun using ionic run command?

I am working on a ionic project and trying to use LokiJS. Below is my code,
controller,
$scope.test ={birthdays:[]};
$ionicPlatform.ready(function() {
BirthdayService.initDB();
BirthdayService.getAllBirthdays().then(function(birthdays){
console.log("birthdays=",birthdays);// gives empty array second run...
//var bday1 = {Name:"abrj",Date:new Date()};
//var bday2 = {Name:"abrj2",Date:new Date()};
//BirthdayService.addBirthday(bday1);
//BirthdayService.addBirthday(bday2); added birthdays during the first run.
});
});
I am using cordova-fs-adapter and cordova-file-plugin.
below is my service for adapter integration,
(function() {
angular.module('starter').factory('BirthdayService', ['$q', 'Loki', BirthdayService]);
function BirthdayService($q, Loki) {
var _db;
var _birthdays;
function initDB() {
var fsAdapter = new LokiCordovaFSAdapter({"prefix": "loki"});
_db = new Loki('birthdaysDB',
{
autosave: true,
autosaveInterval: 1000, // 1 second
adapter: fsAdapter
});
};
function getAllBirthdays() {
return $q(function (resolve, reject) {
var options = {
birthdays: {
proto: Object,
inflate: function (src, dst) {
var prop;
for (prop in src) {
if (prop === 'Date') {
dst.Date = new Date(src.Date);
} else {
dst[prop] = src[prop];
}
}
}
}
};
_db.loadDatabase(options, function () {
_birthdays = _db.getCollection('birthdays');
if (!_birthdays) {
_birthdays = _db.addCollection('birthdays');
}
resolve(_birthdays.data);
});
});
};
function addBirthday(birthday) {
console.log("Birthdays=",_birthdays);
_birthdays.insert(birthday);
};
function updateBirthday(birthday) {
_birthdays.update(birthday);
};
function deleteBirthday(birthday) {
_birthdays.remove(birthday);
};
return {
initDB: initDB,
getAllBirthdays: getAllBirthdays,
addBirthday: addBirthday,
updateBirthday: updateBirthday,
deleteBirthday: deleteBirthday
};
}
})();
In first run I am inserting two documents into the birthdays collections.On second run when I trying to check whether they have persisted, they weren't. I know I am doing something wrong.Do suggest.Local storage also gets cleared everytime i rerun(ionic run android)?!

traverse through each file in SD card using phonegap file api

I want to traverse through each file in the SD card inside all the directories and sub directories using the FILE API of phonegap (which is the w3c file api actually). I have to perform a certain set of operations on these files by looking at their nature. I donot want to search for specific types of files, but traverse through each file in a sequential manner.
Can someone please help me with this? Just a basic loop framework with the necessary requirements for the traversal would be a great help.
Thank You in advance.

I think the following code should work:
window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, onRequestFileSystem, fail);
function onRequestFileSystem(fileSystem) {
var directoryReader = fileSystem.root.createReader();
directoryReader.readEntries(onReadEntries, fail);
}
function onReadEntries(entries) {
var i;
for (i = 0; i < entries.length; i++) {
if (entries[i].isFile == true) {
// ...
}
if (entries[i].isDirectory == true) {
var directoryReader = entries[i].fullPath.createReader();
directoryReader.readEntries(onReadEntries, fail);
}
}
}
http://www.c-sharpcorner.com/UploadFile/e83792/filesystem-directoryentry-objects-in-phonegap/

scan : function(url,fileType,callback)
{
var fileTypeCollection = [];
var defer = $q.defer();
url.forEach(function(element, index)
{
//requestLocalFileSystemURL
log(element);
window.resolveLocalFileSystemURL(element,onRequestFileSystem, fail);
log("Ends resolve");
});
function onRequestFileSystem(fileSystem)
{
var directoryReader = fileSystem.createReader();
directoryReader.readEntries(onReadEntries,fail);
} /*onRequestFile Ends*/
function onReadEntries(entries)
{
if(entries.length==0)
{
log("Entries Length....Resolving");
defer.resolve(fileTypeCollection);
}
else
{
entries.forEach( function(element, index)
{
if (element.isDirectory === true)
{
// Recursive -- call back into this subdirectory
onRequestFileSystem(element);
}
if(element.isFile == true)
{
fileType.forEach(function(type)
{
if(element.name.indexOf(type) != -1)
{
fileTypeCollection.push(element);
}
});
} /*is File ENds*/
}); /*Entries For Each Ends*/
}
} /*OnRead Ends*/
function fail(resp)
{
log(resp);
defer.reject();
} /*Fail Ends*/
return defer.promise;
} //Scan Function Ends
try this. remove the promises if u wish and use a callback.promises is kind of broken. if you can fix then its ok else use a callback after push for FileType