Your problem is with installing NPM, which, or has not been installed, or has been installed wrongly.If you installed, do not forget to restart the computer after installation. If this does not solve, type node -v in the command promp and see if it finds any version. If you do not find, go to the website https://nodejs.org/en/download/ to perform the installation. If you have found, you can try to manually add the installation location in the environment variable PATH. For this, follow the steps described in this other StackOverflow answer https://stackoverflow.com/a/47524025/8741188 to edit the environment variable PATH. And then add this to the end of the text: ;C:\Program Files\nodejs\ Just add to the end, don't replace the entire text!

You're probably using one id testing, to make it work you need to create an account. After creating the account use the ID in it created. This will make you can customize which ads should be displayed and show the real ads. Change your appId within config.xml, but it can take a while to work, probably one day or more to start showing the ads.Source: https://stackoverflow.com/a/45934027/10514656

You have to use the Background mode plugin, if not every time the phone is turned off after a while will stop the audio.It is very easy to use https://ionicframework.com/docs/native/background-mode#usage

I've identified the mistake. Analyzing the failure more calmly she cites that supported requests should respect some informed protocol (http, data, chrome, chrome-extension, https). Then I returned in the configuration of the base URL that was "ec2-32-17-12-43.sa-east-1.compute.amazonaws.com:8080" and added the Http before " http://ec2-32-17-12-43.sa-east-1.compute.amazonaws.com:8080 ".

I realized that it is a version error, my ionic native core is ^4 and the plugin asks for version 5. I arranged by installing an older version of the plugin using the commandnpm install @ionic-native/social-sharing@^4 after that it was necessary to go to the config.xml file and change the following line: <plugin name="cordova-plugin-x-socialsharing" > to: <plugin name="cordova-plugin-x-socialsharing" spec="^4.20.0"> ps.in place of 4.2 put the q vc version installed with npm in the previous step.

If you are sure it will always be a value in the array or you will always take the first value:const turma = result && result.length > 0 ? dados[0].Turma : // primeira turma no array null; // vazio se nao existir console.log(turma); If you want to filter the values and return a list of classes by id, you can use:function encontrarTurmaPorId(id: string): any { // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/isArray if (!Array.isArray(dados)) { return []; // Nenhuma turma } // Filtra valores e retorna apenas turmas com ID específico // Recomendo trocar o "any" pela sua interface/tipo const turmas = dados.filter((items: Array<any>) => items.Turma.Id === id); return turmas; } console.log(encontrarTurmaPorId(1)); // retorna lista de turmas com id 1

I managed to solve it as follows:To use the normal camera in ionic 3 you need to run the following commands If you already have the package. json a plugin coma version 5, delete1. ionic cordova plugin add cordova-plugin-camera 2. npm install @ionic-native/camera@4.20.0

As Ionic uses html to render the elements on the screen, you can create the buttons and position them with 'position: fixed' on the element of the map.

In fact, making multiple requests for seconds can harm the performance of the app and backend.You can use the watchAcceleration and operators of rxjs to limit and/or group the accelerometer data.Some solution options areAdd readings by n seconds and send in batch (with https://www.learnrxjs.io/operators/transformation/buffertime.html and https://www.learnrxjs.io/operators/transformation/mergemap.html import { bufferTime, mergeMap } from 'rxjs/operators'; (...) this.deviceMotion.watchAcceleration().pipe( bufferTime(2000), mergeMap(groupedData => this.apiService.sendBatchData(groupedData)), ).subscribe(response => { // Response da api }); Collect the last reading at each n seconds, discarding intermediate readings (with https://www.learnrxjs.io/operators/filtering/debouncetime.html import { debounceTime, mergeMap } from 'rxjs/operators'; (...) this.deviceMotion.watchAcceleration().pipe( debounceTime(2000), mergeMap(singleData => this.apiService.sendData(singleData)), ).subscribe(response => { // Response da api }); Among others. The ideal solution will depend on your use case.

After a lot of tests and a lot of searching for this problem, I managed to solve it. Using the type of award-winning video announcement as a test does not always have a video to be displayed by admob, I know that in other versions to work just take the number of the admb id and put it blank and the test video appears, but in my case with the versions I use did not work. I took the test option I put as false. Even so when compiling does not work, but compiling in --prod --release and preparing the apk as if publishing the video opens correctly and all events work.

It’s normal developers to fall into this problem because your app tries to access something external a "the url of the api" and to protect you from an external access it blocks this request.but why in the browser works? I bet the api and the browser are running on the same PC then the request is not blocked.To understand more about the CORS: https://developer.mozilla.org/pt-BR/docs/Web/HTTP/Controle_Acesso_CORS Some possible solutions can be: Send Parameters by Headers during the request => { Access-Control-Allow-Origin: *** Add a proxy to consume api.Use Lib https://www.npmjs.com/package/cors in apiI hope I helped:)

Let's say the problem was the cache that was saved on the page, I called that page from a ion-tab.<ion-tabs color="ticket-blue-rainbow"> <ion-tab [root]="paginaInicialRoot" tabTitle="Inicio" tabIcon="ios-home-outline" [tabsHideOnSubPages]="true"></ion-tab> <ion-tab [root]="searchRoot" tabTitle="Procurar evento" tabIcon="ios-search-outline" [tabsHideOnSubPages]="true"></ion-tab> <ion-tab [root]="ingressoRoot" tabTitle="Ingressos" tabIcon="ios-card-outline" [tabsHideOnSubPages]="true"></ion-tab> <ion-tab [root]="carrinhoRoot" tabTitle="Carrinho" tabIcon="ios-cart-outline" [tabsHideOnSubPages]="true"></ion-tab> <ion-tab [root]="perfilRoot" tabTitle="Perfil" tabIcon="ios-people-outline" [tabsHideOnSubPages]="true"></ion-tab> </ion-tabs> That tab called my cart<ion-tab [root]="carrinhoRoot" tabTitle="Carrinho" tabIcon="ios-cart-outline" [tabsHideOnSubPages]="true"></ion-tab> Calling the cart through the ion-tab somehow stored the form data(I don't wonder how, are ionic things for running on a WebView).I removed the cart from the ion-tab and now I am calling it through a button that when requested uses this function public goToCart(){ this.navCtrl.push(CartButtonPage); } In short, with NavCtrl.push the cart works normally, already with ion-tab does not perform properly.

When you use a callback function (this function you pass in createToken), within a method, you lose the reference of this, which becomes that of the Marketpago object.an easy way to solve this is to save this in a variable, before calling the Lightning Market.Ex: let self = this;Or also use arrow function instead of the common function

I don't know if I understand your problem well, but it seems you're making a for, which is a synchronous method and within it firing various asynchronous methods, which means that the for will end and follow before the uploads end, if what you want is to bring that upload code to a "sync" pro mode for stay waiting, you can convert observable into promisse and use async await, you will "lost" the status of progress in this case, but I believe that the for will wait for the upload in this case.look at an example of "synchronous" upload on firebase storageasync upload(file) { const fileName = `${new Date().getTime()}-${file.name}`; const filePath = `${this.PATH}/${fileName}`; const fileRef = this.afStorage.ref(filePath); await this.afStorage.upload(filePath, file).snapshotChanges().toPromise(); const urlFile = await fileRef.getDownloadURL().toPromise(); return { urlFile: urlFile, fileName: file.name }; } inside for It would be like this:for (let i = 0; i < item.fileToUpload.length; i++){ await upload(item.fileToUpload[i]) }

LocalStorage is not a safe place to store data. Data can be deleted periodically by the operating system. The best solution is to use "Native Storage": https://ionicframework.com/docs/native/native-storage/

I don't know if I understand right, but I'll try...If that's what I'm wondering, const arrayObject = [ {nome:'Objeto um'}, {teste:'Objeto dois'}, {nome:'Objeto tres'} ] console.log(arrayObject.reduce((a,b)=>({...a, ...b})))you can make a reduce, the problem is that if the objects have keys with the same name will be worth the value of the key of the last object found.

I do not know if I understood your doubt, however, as described in the documentation: https://firebase.google.com/docs/database/security/quickstart?hl=pt-br Database rules require Firebase Authentication and grant read and write permissions to users only authenticated. Standard rules ensure that the database is not accessed by anyone before being set up. Then customize them according to your needs. Check out some common examples:// These rules don't allow anyone read or write access to your database { "rules": { ".read": false, ".write": false } } Therefore, by defining these rules, it is possible to configure the level of access of each user to the data, in this same https://firebase.google.com/docs/database/security/quickstart?hl=pt-br , there is a deeper explanation about defining these rules for users.

I've solved this problem by editing the file ..\platforms\android\ CordovaLib\cordova. gradlein the method getAvailableBuildTools() I changed the line that creates File instance.From:def buildToolsDir = new File(getAndroidSdkDir(), "build-tools") To:def buildToolsDir = new File("d:\\Acacio\\sdk-tools-windows-4333796\\tools\\build-tools") Point to your machine's build-tools

Validations in Ionic 3 can be implemented in JS itself with a validFormulario() function or with the Froms of the angle.Below is a tutorial for implementing a FormBuilder login screen that I believe is the most efficient and elegant form validation form. https://robferguson.org/blog/2017/11/19/ionic-3-and-forms/

Do it const prod = localStorage.getItem('vetor'); if (prod != null) { this.vetCarrinho = JSON.parse(prod); } Isn't that enough? Attention every time you dolocalStorage.setItem("vetor", JSON.stringify(this.vetCarrinho)); You're writing over any data that's saved with the 'vector' key.