Android is Google's open source OS and system for smart phones and tablets. For user questions, see http://android.stackexchange.com

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How to test android apps that depend on telecom provider connection?

I am planning to write an app that needs phone number and contact list. Is there any way that I can test my app without buying a telecom provider connection for my android phone. Without a sim the ...
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Android. HTTP Communcation, and GCM

I have an app that sends/receive data via HTTP POST, and communicates with PHP/SQL on the backend. I however wanted to integrate GCM to I can tell the app to "check for an update" to query the ...
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1k views

Syncing chat on android device with web application

I am trying to make a chat application in android. Just a one on one chat. However I also want the chat to be synced with the web app that runs on the browser. I am confused about how to go about it. ...
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1answer
81 views

Do I need a web-service for this case? Data-synchronization over multiple clients

I'm new in this area and a little bit confused about my current thoughts on a web-service implementation for my application. I want to synchronize all connected clients with the current data on a ...
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1answer
542 views

Capturing mobile device system (output) audio

I'm trying to figure out a way to capture the system audio of an Android and/or Windows Phone. The idea is to provide a stream based on the music I'm currently playing on my phone. What I'm not sure ...
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1answer
297 views

Large Scale Application Development in Android

Since, I am fairly new to large scale app development in Android and Java, I thought I would ask for advice. My team is faced with developing a prototype of a fairly complex medical software. ...
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1answer
229 views

Android, using a Fragment to hold/edit complex object, accesible from any Activity

I'll do my best to describe the problem, but I'm still very new to several concepts that I think this problem requires to be solved (namely interfaces and threads). I should preface this by saying ...
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36 views

Android: Pattern for checking requirements at startup?

My app's launcher activity checks a bunch of requirements like whether GPS is enabled, there's a network connection, the app has device administrator privileges, etc. Some of these checks display ...
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116 views

Building a news app for both phones and tablets

I am building a news app. In phone mode it should have a navigation drawer which slides out when you tap on a hamburger button or slide your finger. That navigation drawer has a fragment with static ...
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63 views

Use Android App Icons for Sharing

I got a question about licensing of android app icons. At the moment I am developing an app and I implemented a share function. The user can select a prefered app to share a text message in a popup ...
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43 views

Android network Lib development

I have to develop an Android library that should frequently communicate with a server in the background. Access to the lib Object should be guaranteed everywhere in the Apps that will use it, so I ...
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783 views

How to get local device time corresponding to NTP server timestamp?

So, I'm trying to use an NTP server to help me synchronize an app across two Android devices (to have them perform some action at the exact same time, give or take < 20 ms). I'm using the SNTP ...
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103 views

Android: How to set a stop flag in native C thread from Java

In my NDK Android app, Java part runs native C code to perform intensive calculations. It does so by creating an AsyncTask worker object that runs the native code in a separate thread via the JNI. The ...
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113 views

Best practices for MVP pattern on Android

my team has had great success introducing MVP and the associated unit tests that go with the presenter. We are wondering how granular we should make the interaction between the View and the ...
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67 views

Multiple 1024x1024 texture pages or one 2048x2048 texture page?

I have a lot of textures around the size of 512x512, and the LibGDX texture packer can't find a way to put more than one of those on one page for some reason. So, I end up with fifteen or sixteen ...
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68 views

URI naming scheme for assets shared between Android app users

A feature of my Android application is to allow users to choose graphical assets from a gallery view. Each asset is physically defined by an individual JSON file on the file system. The application ...
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43 views

Individual methods or parameters for Google Analytics abstraction on Android

A coworker and I are having a discussion around the best way to build our abstraction on top of Google Analytics for an Android application. A couple of data points. We have auto-tracking enabled ...
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126 views

Syncing structured data and files in Android App with an ORM?

I am developing an Android App which I have developed for iOS before. The app requires that structured data and files are synced across android devices. In iOS, I was using Core Data and synced to ...
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103 views

Is this synchronization required in service onCreate method?

Below is a sample code i captured from android doc Per service instance onCreate will be called only once. Ref: here and here The synchronization and singleton doesn't make any sense to me in this ...
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84 views

VPN system to analyze users traffic (onavo-like)

I would like to develop a system that is able to analize the network traffic of people using it. I am interested in the URLs that the users request. Let's say the users targeted are on iOS or Android ...
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40 views

Online error reporting without network access

I have developed an application for android requiring no permissions, but the biggest downside of this is that I don't have error reporting. So, I was playing around for the past week with any ...
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30 views

versioning data schema in android internal storage

I am using Android's internal storage to hold data for my application and I am trying to find a good way to handle reading data of an older schema. For example, let's say I have serialized and written ...
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113 views

What are the tradeoffs involved in referencing Context in a library?

Context is one of the core classes of Android, and many functions it contains are useful in Android library projects, particularly accessing configuration. What are the trade offs involved in ...
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22 views

Nature of Bluetooth Scanning

I have a bluetooth application that I've developed and fiddled with scan parameters to make it quicker between scans, or make the scans themselves longer. Etc, etc... One question I have is about the ...
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17 views

Android Service vs Simple class with thread for network access

I am in quite a dilemma about how to solve my problem regarding network access. I checked this question but it does not really gives a solution for my problem. All of my REST based requests are ...
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48 views

Adding functionality to the activity (inheritance, decoration, strategy … ) or multiple inheritance

I cannot decide what approach should I use in the next situtation. One activity from my app need to have different functionality, here is the leak of multiple inheritence comes into play. ...
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44 views

Android, access 1 activity from 2 cases, what design pattern is this?

I'm developing an Android app, encounter this case. There are 2 ways we can enter an activity (named activityB): either from activityA or from notification. 1st case: ActivityA -> activityB 2nd ...
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57 views

Android runtime - does ART miss optimization opportunities over Dalvik?

Is ART a strict improvement over Dalvik, or there are optimizations that an ahead-of-time compiler will miss compared to JIT, but Google decide they don't matter in practice? For example, with JIT, ...
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40 views

Android, Parse back end and conceptual creation of an offline post/comment system

I'm wondering how conceptually I would go about creating a comment / post system using parse, obviously there's lots of examples but they don't account for the following: How do I relate an comment ...
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182 views

Hybrid Apps and Storage - how does it work with Native apps and which to use?

I'm using Ionic at the moment. I believe, like many others, that hybrid apps will become more more common/important than they are now simply because the frameworks are getting better and better. ...
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96 views

Using a code library for Android with Apache 2.0 license

If: I want to create an app (e.g. for a business who wants all its employees to download the app from Google Play freely) I do not have an "about" button in the app. The app is closed source. How ...
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22 views

android: Replacing service with mockup in certain build config

So I'm using Android Studio, and I have an interface, Potato, and PotatoImpl that talks to a remote server. For development I want to use PotatoMockup, but i don't want the choice between the real ...
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84 views

What could possibly be a Mysql database structure for an web app say like Flurry?

Simply say, I'm working on a web App say like Flurry (http://www.flurry.com/), that would communicate with a Smartphone App trough API. Right now I'm designing the database structure, and I guess ...
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51 views

Java API initialization step

I am developing an Android Library which involves both Network and Bluetooth communication. In order to start using the library it must be configured. In other words a request to the backend must be ...
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572 views

Best practice: Secure Android app online authentication

Currently, I develop an Android App needing online authentication for login (and registration). The main focus is on security. I’m amaing for: keeping the users’ passwords safe and preventing MITM ...
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228 views

What are the implications of the cache when using notifyDataSetChanged?

I use Volley to return JSON from an API. I parse this JSON and add StoreItem objects to a List, then use an adapter to display in a listview. I use the cache functionality in Volley, and I'm ...
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152 views

Efficiently compute distance of location to POIs?

I want to write an android application that holds information where (climbing) rocks are located in a wider area. I want to display all rocks nearby my current location (say below 500m) and may be ...
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3k views

Can I set the IMEI of a blustacks virtual device?

Using an app "Get My IMEI" I was able to retrieve an invalid IMEI for my bluestack emulator however I can't see how I can change it. The guys at XDA developers forum are talking about it, but it's an ...