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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2answers
290 views

Emulating communication between Android and microcontroller using threads or services or… other?

I am not sure what is the best way for the tasks below: threads, AsyncTasks, Loopers, services? Why? Are there other candidates? I need threads/Tasks/Services/other for: Plotting data, (refreshing ...
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0answers
1k 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 ...
0
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1answer
258 views

How to get involved in open-source project? (Android/java programmer) [closed]

My question might sound stupid and not suitable for this site, but i dont have any better place to ask then here, so please bear with me. Im a college student that love playing with android. Around ...
3
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1answer
356 views

GPL - Writing an exception for a plugin interface under section 7 of GPLv3

The problem I've written a application for Android licensed under GPLv3 which needs to use Google Play Services, a proprietary library, as a plugin to the app. Now I'd also like to add libspotify as ...
8
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2answers
271 views

Where to show copyright messages? [duplicate]

In my Android application, I am using a couple of open source libraries. The only requirement these libraries have is that I must show their respective copyright notices in my application. I am trying ...
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3answers
18k views

Force users to update to the latest version of my app on the Google Play Store

Is there a way to have a "critical update" for my app on the Google Play Store that would require the user to update the app to keep using it? For instance, let say I push an update that brings a few ...
1
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1answer
3k views

Mobile development project architecture model/pattern

I would like to hear some improvement suggestions for mobile development (Android/iOS) project architectures. I would like to go for a "safe" design, modular and that can be easily maintained in time. ...
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1answer
289 views

Image strategy on Android

I am creating an application with lots of photos. They will take > 100 mb on memory. So far I have 3 ideas: Place it in @drawable - app will be heavy Download by JSON and place in java ...
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1answer
2k views

Can IndexedDB be used in offline hybrid android apps?

Can IndexedDB be used in offline hybrid android apps? I have tried the [example presented in this post,1 while it is working in my laptopn on Google Chrome, it is not working inside the WebView in my ...
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2answers
268 views

Who should provide the Requirement doc / SRS? [duplicate]

I am creating a Mobile application (CRM) for another software company. They told me they need these these stuff from here and there, within 15-30 minutes. But they never provided a detailed client ...
3
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2answers
383 views

How does browsing speed differ in native apps, web apps, and websites?

I read an article online which I give the reference to below which compare between Native apps and web apps, in addition to standard website. It seems from that article that native apps are faster ...
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5answers
14k views

Design pattern for syncing data in android

I have been seeing two implementations for syncing data between the server and the client on majority of the apps. This assumes no GCM is set up:- Running an intent service periodically which ...
4
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1answer
534 views

Object oriented parser model review

First time I make use of Code Review. At the moment I'm creating an Android application and the company I'm developing it for, has a specific file format that can be used to give text based data ...
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0answers
135 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 ...
0
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1answer
432 views

Main activity design too busy

I have a main activity that contains many buttons. I don't want to have a list of buttons like this. I know this looks bad, only cause I threw this together to show you what I have. As you can see, I ...
1
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2answers
2k views

Android Design - Service vs Thread for Networking

I am writing an Android app, finally (yay me) and for this app I need persistant, but user closeable, network sockets (yes, more than one). I decided to try my hand at writing my own version of an ...
4
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2answers
314 views

Using private vs company devices for development at work

I'm employed at a mobile app development company since 4 months as Android developer. Currently I'm using my two private Android devices for development. Is it common practice that developers use ...
3
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1answer
95 views

An extensible logging architecture for Android?

The end goal is to have a variety of data sets that can all be graphically plotted against eachother. All data should correspond to a date, so that when plotted against each other, they show the ...
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1answer
683 views

In Android, is there any reason to set up a content provider for a local database?

I have an android application with a custom content provider set up to load data asychonously. The database is a local file so I'm not sure if I needed to set up a content provider at all. Sometimes I ...
4
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2answers
894 views

How can I test an application that depends on specific hardware

I have written an Android application. The application requires a Bluetooth connection to a very specific piece of hardware, currently a prototype. The only way I can test the app at present is to ...
1
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2answers
476 views

Two or one git repo for Android app + web service backend?

I'm wondering what the best practice is for my git repository structure where I have an Android application + a web service backend. In general, I'd like to release these two independently (e.g., perf ...
5
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1answer
449 views

What kind of problems is an Android beginner likely to encounter in using Scala?

I am a hobbyist programmer who makes and maintains one production system, largely coded in Python, which now has to be ported to Android. I don't know Java at all. However, SL4A in Android makes ...
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2answers
490 views

developing an android app that include a C++ toolkit [closed]

I'm a java developer and I want to develop an android app that capture a photo and extract its bags of visual words. To extract those bags of words I use the TOP-SURF toolkit which is written in C++ ...
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2answers
1k views

Importance of data structures in modern S/W development [closed]

During 1990s when there were no advanced frameworks/paradigms available for S/W development , knowledge on data structures was critical... which I can comprehend. But nowadays, for most of the ...
2
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1answer
851 views

How to audit an Android application (not rooted) without having access to its source?

How can I check if an Android application running on a not rooted device is "secure" without knowing its source? I would look for: Plain text in Web-Requests (wireshark and emulator) SQL-injection ...
6
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2answers
2k views

Should I use mMember and sStatic naming convention in Android? [closed]

Android source code and many Android open-source apps and libs use m prefix for member fields and s prefix for static member fields: private static boolean sStarted; private long mTimestamp; I ...
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1answer
6k views

External sqlite db file from sdcard in android

I just searched for the same but didn't get the answers. What I have is a db file which is around 100MB. I have saved the db file in sdcard . Through this db file I'm going to populate the contents ...
2
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3answers
536 views

Generally speaking can a Javascript-based application (iUI) be deployed without a webserver?

Suppose I have a Javascript based application written in iUI or Kendo UI. Can it be packaged in such a way they can run locally without a webserver? I have a few web applications, that with some ...
1
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1answer
339 views

MyListActivity, MyCursorAdapter, MyViewHolder — nested classes or not?

I am using several activities based on the ListActivity. All of them display information from different SQLite queries, and all of them use the ViewHolder optimization. The cursor adapter have to be ...
0
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1answer
48 views

Additional class for objects construction when working with database

I have a class derived from SQLiteOpenHelper which is all about working with a database, i.e. tables creation, insertions, data selections. All methods which deal with data selection return a Cursor. ...
0
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1answer
508 views

metro style on windows and android

I want to develop a rather simple app using windows 8 metro style for GUI. But i need this app to have the same appearance, GUI, for both platforms, so that end users that uses it both on PC and a ...
1
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1answer
2k views

Converting from web to PhoneGap

I was going through the PhonGap Documentation about how to package your HTML/JS/CSS to a platform specific "native app". They have maintained separate documentations for the separate Cordova versions ...
3
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2answers
2k views

use of LGPL libraries in closed source android software

I'm investigating the legal issues of using LGPL native libraries in a closed source Android software. As for now, my research on the subject shows that using LGPL libraries in closed source software ...
4
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1answer
3k views

Why does Android's Bundle API accept ArrayLists rather than Lists

I'm new to Android and while going through a tutorial on saving Activity state to a Bundle, I noticed that instead of accepting the more generic List interface, Bundle's put methods are expecting ...
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3answers
342 views

How to Protect Intellectual property violations from one's own team [duplicate]

I have an android app idea, I want to make the app along with a few batch-mates in my collage. (1) How do I make sure that these guys will not compromise the intellectual properties involved? In the ...
0
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2answers
9k views

Drop table if it already exists and then re-create it?

I was just learning about sqlite in android programming from the New Boston Travis videos and I have come across something strange: It is said that if the database does not already exists, onCreate() ...
6
votes
4answers
7k views

What's meant by, “TODO Auto-generated method stub”? [closed]

I am using eclipse for android programming, and every here and there i see the statement, "TODO Auto-generated method stub." I understand that these methods were generated automatically by eclipse ...
1
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2answers
1k views

Static vs. dynamic memory allocation - lots of constant objects, only small part of them used at runtime

Here are two options: Option 1: enum QuizCategory { CATEGORY_1(new MyCollection<Question>() .add(Question.QUESTION_A) .add(Question.QUESTION_B) ...
0
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2answers
3k views

Sync SQLite using only HTTP

I currently have a SQLite DB on my server that is needed by an android app I am currently developing. I download the DB to the android device using HTTP each time the contents are changed. Does ...
2
votes
2answers
218 views

How can I translate my android app help and keep it up to date?

My Android application is almost done and I spend much time creating a set of very precise help pages in HTML that I display using WebViews. I am now ready for the next step, which is i18n. ...
5
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2answers
4k views

Benefits to using fragments in Android projects

I am learning Android programming and right now and i'm reading about fragments. I understand what fragments are, but either the tutorial is missing some steps or i'm missing something. So my question ...
3
votes
2answers
4k views

setSoftInputMode versus InputMethodManager

I have seen and used both of the methods to hide the on screen keyboard while coding Android: getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN); and: ...
6
votes
2answers
828 views

Capturing mobile device system (output) audio [closed]

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 ...
1
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1answer
315 views

Can I borrow parts of an apache-licensed project for something not open-source?

If I want to make a card game app or android, could I legally borrow parts of the Apache-2.0-licensed Solitaire-for-Android? Would I be able to charge such a project? (I was unable to understand the ...
3
votes
2answers
426 views

How to keep my Activity code readable and maintainable?

I have written a rather small App with only one activity. From my understanding an activity has to be seen as kind of a view and controller in one class. But even for a little app, with 3 dialogs (...
-2
votes
1answer
237 views

How does one generate challenging different puzzles like the one in AirLock android game [closed]

here's the link of the app: https://play.google.com/store/apps/details?id=com.iatll.airlock I had studied AI in the final year of b.tech cs programme, and i do remember some algorithm of ...
7
votes
5answers
919 views

Why does Java use so many middlemen? [closed]

For example to read data from a website we do: HttpResponse httpResponse = httpClient.execute(httpPost); HttpEntity httpEntity = httpResponse.getEntity(); is = httpEntity.getContent();...
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1answer
3k views

Android game loop in separate thread

I am about to port a game that was initially written for iOs and I am having some doubts how certain things should be done. I have been looking many of the examples of the game loops for android, and ...
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1answer
459 views

Android design advice - services & broadcast receivers

I'm in the process of learning the Android SDK and creating some projects to get a grasp on the system. The current project I'm working with works just fine but I'd like to get some advice about ...
2
votes
1answer
3k views

How can I access my Handler/runnable class from all my other classes in Android?

I am trying to create a class which allows me to do something every 5 seconds and I want to be able to start and stop this from running from any of the other classes. Here is my Timer class: public ...