Most voted "mobile" questions
Questions related to software development for portable devices such as mobile phones (en: mobile) and tablets, on or off the web (mobile sites) (apps).
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answers885
viewsSet permissions for app at runtime
There are some app’s that when we will open for the first time it asks the user for permission to activate certain device features such as camera, contacts calendar, etc... How to make the…
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answer80
viewsMobile Framework for Development in Cordova
I am developing a hybrid application that uses Cordova and I need solutions for the graphical part of the APP. In principle I think about using Bootstrap, but as I have little knowledge in mobile…
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answers94
viewsQR CODE reading with Cordova
How do I read a QR CODE through Cordova? I’ve seen several indications of plugins but none worked. Obs: I’m developing using Visual Studio (I don’t know if there is any influence, so the…
android visual-studio apache-cordova mobile cordova-pluginasked 6 years, 12 months ago Anderson Brunel Modolon 1,111 -
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answer90
viewsData Franchise No Consumption App
Hello. I am searching to see how some applications work that allow its use without consuming data from the internet franchise. iFood, for example, has this feature, among others like Magazine Luiza,…
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answer193
viewsMethodology for planning a mobile app
Background: I was thinking of starting a mobile app project alone, but not to be something tiresome and with no prospect of ending, I thought of organizing the activities in the method Kanban, after…
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answer1138
viewsConverting String to date Swfit 3
Hello, I’m trying to convert a String in Date in Swift 3. However the date is always returning me with two hours more. Below is my code. let dateFormatter = DateFormatter() dateFormatter.dateFormat…
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answers54
viewsAndroid studio gallery effect
I have a little problem that I am not finding the answer, I wanted to make a gallery with this effect: but I’m not getting anyone would have a hint of how I can achieve such an effect?…
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answer155
viewsIs it possible to import an XML file with an interest in replacing XAML?
Good morning ladies and gentlemen, It would be possible to work with XML file (layout) made in Android Studio to use in visual studio in the case of android development with Xamarin. I would like to…
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answers354
viewsHow to handle 400 error messages
I work with an application made in Xamarin that sends several requests to the api. Eventually, a user action receives a BAD REQUEST because the user tried to like a photo that she had already liked…
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answer879
viewsWhite Screen when loading the app in Android Studio
I’m using visual studio to create a mobile app. I used the command "Ionic Cordova run android" to load in my emulator in android studio my application. Apparently it seems to be going, but it just…
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answer864
viewsError validating android Studio field
Good morning Everybody, I’m making the following mistake: When trying to validate my fields by clicking the sign up button, the same does no action.. I’m new with android and would like a help.…
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answer1588
viewsHow to go back to the previous page with physical smartphone button - Ionic
How do I allow the physical button come back of the mobile carries out a certain function in the Ionic 3? (In this case, a function that makes the application open the home page)…
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answers29
viewsShape Android Studio
have a doubt, it would be possible to create a Shape in android studio like this model ?…
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answer1268
viewsNumeric keyboard input type="Text", Ionic Cordova
I have in my app a field for Cpf, I need to make sure that when the user fills Cpf, the device shows only the numeric keyboard. But if I change the <input type="text"> for <input…
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answer1264
viewsSend application data to Firebase - Delphi
Hi, I have an app almost ready. But in the end she will need to put some data in 2 Tedits like name and email, when she clicks on Tbutton I want this information to be recorded in Firebase, which I…
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answer132
viewsCarousel does not load the second image on the mobile in portrait position
Hello, I have a Carousel on my site that is the basis to show my products, it works well on pc (shows 4 images in sequence) and tablet (shows 2 images in sequence) but on mobile we have a problem,…
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answer60
viewsDoubt - Mobile Site
How can I get the Server to automatically identify that the User is being used by a mobile Device and send it to a mobile site
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answer40
viewsInsert Sqlite into Intentservice background task
I have a problem with Intentservice, I have an Activity with three spinner they receive the State, City and Neighborhood of a Webservice where the Intentservice performs this task and within…
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answer161
viewsSelect Multiple Materialize on mobile
I have a question on select Multiple from Materialize to mobile. I cannot select another option, other than Bootstrap that when clicking outside the field, it automatically exits. Someone’s been…
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answer522
viewsReact Native and hybrid?
I was wondering if React Native and really hybrid, like Ionic, that you program a code only and export to the two platforms (IOS/ANDROID), or and similar to Xamarin, that you make the 2 different…
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answers104
viewsHow to take checkbox values and insert them into the bank
I will list several products and in each will have one checkbox to select which ones he wants. The problem is that I’m not getting to do the $.each() to pick up only the selected products and then…
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answer207
viewsScreen capture/screenshot button in Xamarin
I am developing an App and I need it to take a screenshot, but not by the standard procedure (home button + power), but by a button inserted on the screen. The button has already been created and is…
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answer379
viewsMobile Numeric Angular Keyboard
Hello, I’m developing an angular form that will be used both on desktop and mobile. However, I would like in mobile the numeric fields as CPF, Phone, Zip code, present only the numeric keyboard and…
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answers182
viewsNullpointerexception when obtaining latitude and longitude
I am developing a mobile application with Android Studio that aims to get the information of latitude and longitude and use the service of Google Geocoder to return the address of the geographical…
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answer31
viewsHow do I download a file that is in Storage by my app (Adnroid Studio)
I took a look at the documentation provided by Firebase and still did not understand how to download a file that is in Storage by my app using Android Studio, someone can help me?
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answers1014
viewsChange text color in Ionic
I’m making an application with the black background, and so the letters need to be white. Have some global variable to change the whole text at once, instead of changing each page at a time?…
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answer41
viewsAndroid: Listview loses information/status when you put the app in the background
Good afternoon, I have an android application that fills a listview with certain information, and in this listview there is a validation that changes the color of the line according to the priority…
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answers71
viewsMobile keyboard does not open on bootstrap site
I made a responsive site with bootstrap, but when clicking on inputs the mobile keyboard is not triggered. What can be? <script…
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answers49
viewsBackground and asynchronous task in Ionic app
I am working with Ionic and create an app where save the current location of each user, however, the function that performs the search for the user coordinates runs when I start the lifecycle of the…
ionic apache-cordova mobile asynchronous background-servicesasked 5 years, 8 months ago Marco Alves 1 -
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answer226
viewsHow to set values in a Fragment instead of an Activity using Drawer menu?
I created a slider menu in my application and I was able to call an Fragment when selecting the menu options but I am having difficulties to print the values in this Fragment instead of using an…
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answer51
viewsUncommon error progressbar
I’m not understanding the error, I want to do a simple thing with Progressbar but it does not give 'void android.widget.Progressbar.setVisibility(int)' on a null Object Reference. I know this error…
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answer554
viewsHow do I get more memory to run the app?
I’m developing an app android Currently, when running the APP, it starts by reserving 36.62 MB of memory. I would like it to start over 50.00 MB or, when it reaches its limit, add more memory. Is…
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answers673
viewsSharing Facebook API
I have a responsive system, where I created a webview for android and Ios with this system to use it as an application. So far ok. So I implemented a Facebook share button as per Facebook…
javascript mobile facebook-graph-api facebook-sdk facebook-apiasked 6 years, 8 months ago Gabriel 355 -
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answer57
viewsError of Keys Firebase
I’m doing a PWA using Vue and Quasar, but when I make a request in Postman to appear a push notification I have the following return in Postman: { "multicast_id": idMulticast, //removido por mim ao…
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answer386
viewsHow to change the application theme in Ionic 4
I’m using Ionic 4 and I’m having a hard time changing the theme to dark. In Ionic 3, I was only in the document scss variables. and made the change: de @import "ionic.theme.default"; para @import…
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answer50
viewsSwift - Pod Install Framework
Gentlemen, good afternoon! Where I work, we’re providing support for a customer who has an iOS app that uses multiple frameworks. They opened an error call, we went to analyze and the error is…
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answer106
viewsDo you have a way to Implement a C Executable for Mobile?
Come on; I managed to develop a very banac executable in C that writes in File so that I store some data. But, I wanted this executable that is already running on the Desktop also run on Mobiles,…
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answer2070
viewsError: Uncaught (in Promise): Error: PERMISSION_DENIED: Permission denied
I’m doing an application with Ionic 3 and Firebase, where there’s crud. My problem is that I am trying to save the data, but when saving it shows that I do not have permission. What I should do?…
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answers40
viewsHow to adjust a custom text editor to mobile version
Is there any way to adjust an editor on the screen, in the mobile version, without using css: zoom:0.1 or transform:scale(0.1). I need to make the CSS element: .main{} which is CSS of the container…
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answers16
viewsClick button on one Fragment and go to another Fragment
Good morning!! I got a problem. on a button with click function I use the code: Fragmentmanager fragmentManager = getActvity(). getFragmentManager(); FragmentTransaction fragmentTransaction =…
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answers16
viewsmethods of other Ctivity
I’m developing a simulated proof app in it will have several categories of evidence and with checkbox to select which you want to do but I’m unable to call the metadata, appears only the first…
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answers55
viewsJavascrit keypress event does not work on mobile
The Javascript code below, which serves to "bar" character > (asc 60) only works on desktop devices and not on mobile devices. <textarea name='notes' id='ta' wrap='physical' cols='65' rows='8'…
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answers10
viewsBLE plugin limit Bluetooth connection by distance
need to perform a bluetooth connection of an app in Xamarin with another device. I found a plugin called Plugin.BLE. The point is this, the connection between the 2 devices should occur only if both…
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answer715
viewsCentralize Icons in mobile - Css + Html
I’m not able to centralize my icones on mobile, I need this little force, here’s my code below @media(max-width:700px); footer{ bottom:0 ; position: initial; padding: 10px 0; height: 78px; right:0;…
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answers42
viewsDoubt in the Sendbird API to create a chat
Good evening, everyone, I’m doing a little project and I’m using the Sendbird API to create a chat, however I’m finding problems when receiving the message that was sent from one user to another,…
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answers128
viewsAdvertisement Admob appears only once
Hello, can someone help me with this problem? When I run my app on the emulator, the ad appears normally at all times, but when I run it on my mobile the ad appeared only once and did not appear…
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answer35
viewsError "Missing '[' at start of message send Expression"
Good evening everyone, I’m doing the integration of Moip’s SDK(a payment gateway) but my knowledge is more in Swift(which I started a few months ago). They provide the sdk for encryption of…
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answer136
viewsInfinite loop while recovering and recording data in Firebase
I’m a beginner on Android and had a problem recovering data from Firebase and record again, I know the reason for the infinite loop but I don’t know how to fix. public static void setVoto (String…
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answers59
viewsAndroidstudio problem does not work on AVD
Good evening I have a problem, I have no idea how much help I may need from you! I am developing an Android application in Android studio in the code is all correct compiles legal has no syntax…
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answer99
viewsSave data to more than one node in Firebase
Well I have the following code: private void abrirCadastroContato() { String emailContato; emailContato = "email"; int contador = 1; while (contador <=3) { if (contador == 1) { emailContato =…