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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0
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1answer
199 views

Sortable listview using SQLite [closed]

I'm implementing a sortable listview using bauerca's library here. This works, but now I need to define some things where I need some help. This is the functionality of my app_ I can create up to 5 ...
9
votes
3answers
3k views

Why use Android Fragments?

I have read the documentation and some other questions' threads about this topic and I don't really feel convinced; I don't see clearly the limits of use of this technique. Fragments are now seen as ...
0
votes
1answer
1k views

Inserting data to database from Android

I have to build an application where the requirement is that my clients will send data from their Android device and I have to save that data to a database. I have done the part of coding that ...
0
votes
1answer
133 views

Android -> Ruby Server Interface -> Mongodb

I've been wrecking my brain about this for a few days. I'll run my scenario by you and hopefully you can help me. In my head this is how it goes: I have an Android App. I want my Android App to make ...
1
vote
0answers
41 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 ...
0
votes
1answer
649 views

Android proprietary app including Apache-2.0 licensed code from Google

My Android app contains some Apache-2.0 licensed code from Google (in-app billing example) and links to com.android.vending.billing library in the form of a InAppBillingFile.aidl file (same license?). ...
0
votes
1answer
526 views

Android DB With Some Multi-Language Data

I have a SQLite Database in my Android app with a "Question" table, among others. That table contains "default" or "pre-loaded" data (in this case the questions asked by the app). Some of its columns ...
2
votes
1answer
2k views

Shouldn't Android's TextView.getText() return String instead of possibly mutable CharSequence?

I've just spent hours debugging some code because I forgot (actually never considered it) that TextView.getText() returns CharSequence that may be in fact a mutable class... Shouldn't it return ...
1
vote
0answers
31 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 ...
3
votes
2answers
390 views

Dalvik + Java licensing question

This is a licensing question about the Dalvik and J2SE core libraries. In particular the license governing java.util.concurrent.SynchronousQueue. The license header of the class in the JDK source ...
-2
votes
1answer
428 views

calling an abstract method in abstract class

Suppose i have an abstract base class Parent which defines an abstract Method A(some parameter) taking a parameter, also it defines an instance Method B which calls method A(parameter) inside its ...
0
votes
1answer
112 views

What is the meaning of MODULE_LICENSE_BSD_LIKE in Android source code? [closed]

In Android source code, we see files like MODULE_LICENSE_APACHE2, MODULE_LICENSE_BSD_LIKE, MODULE_LICENSE_W3C. An outside observer would think that these specify the intended license that applies to ...
-1
votes
1answer
155 views

is there a way to leave notificationManager and alarmManger alive even when the app is closed?

how would you recommend for me to design an android app where i want it to 1) send location update every 10 minutes 2) to show push notification I want both actions be available even when the app ...
3
votes
2answers
240 views

Tablet development for a dedicated system

I need to make an architectural decision for developing (actually porting) my embedded solution on a tablet. The choice comes down to Ubuntu or Android, so I have some specific questions to help me ...
3
votes
1answer
157 views

Architectural problem for Activity communication in an Android app

I maintain an open source Flickr app Glimmr for Android. There is currently an architectural issue around pagination that I've been trying to solve for quite a while, and would appreciate ideas. ...
0
votes
1answer
501 views

How does package naming affects Android application once deployed

Are there conventions to follow when naming an application package for an Android application? I'm coding in Xamarin Studio, using .Net, so I feel far from this "com.myapp.etc" naming convention. Are ...
1
vote
1answer
87 views

Android apps and GPLv2 classpath exception

My Android app needs javax.activation and javax.mail (both GPLv2 licensed). However, I don't want to make my app GPL-licensed. What are the possibilities to not break the license requirements ...
0
votes
1answer
668 views

In Android can we let a fragment know other fragments?

I think I have found contradictory design guidance within the Google Android documentation on fragmentation. The first statement below advises each fragment be unaware of other fragments and always ...
0
votes
2answers
216 views

outOfMemoryException in android emulator [duplicate]

I'm developing an Android application which is responsible for showing multimedia such as videos and photos to user. I have a certain activity for a gallery of photos. In my phone where I'm ...
1
vote
1answer
2k views

Private apps for iOS and Android

Is it possible to develop private apps for iOS (iPhone/iPad) and Android? With "private apps" I mean apps that do not appear on the public app store, but can be downloaded and used only by selected ...
0
votes
2answers
305 views

Snapchat clone: How do I secure pre-downloaded notifications so that they cannot be opened outside of the app?

Say I'm making a snapchat clone app for Android and iOS. Let's say that I get a snapchat from Baz. I want to pre-download the audio for this snapchat. However, as the developer, I want to secure this ...
0
votes
1answer
3k views

how much memory should android app use [closed]

We are planning to develop an android application. the application will use API and data transfer will be via SSL. I should write documentation and set functional and system requirements for the ...
4
votes
1answer
349 views

What are the benefits of Android way of “saving memory” - explicitly passing Context objects everywhere?

Turned out, this question is not easy to formulate for me, but let's try. In Android, pretty much any UI object depends on a Context, and has defined lifetime. Android can also destroy and recreate UI ...
1
vote
1answer
376 views

Android Data persistence question

I have an android app in which users have sets of items, and each item has about 10 properties. What I do at the moment: items are stored in the server database when the user logs in, I get all the ...
-2
votes
1answer
342 views

Alternative to SIP, voice communication in Android [closed]

Is it exists any alternative to SIP protocol? I want implement voice & video chat option in my application. I don't want use SIP, because I need only simple communication without call for ...
1
vote
2answers
756 views

Use of LGPL libraries on android devices (in a single closed source .apk) [duplicate]

Well this question is actually asked multiple times here already. but the answers are contradictory So that's why I ask it again (maybe time changed things). Can LGPL licensed libraries be used in ...
0
votes
1answer
264 views

Make an app that communicates with an app on a server over wifi [closed]

This is a very broad question, and I'm just looking for a pointer in the right direction more than a specific answer, but it's something I've always wondered and never known. Lets say I have a ...
0
votes
1answer
225 views

Is it good approach to open a keyboard at Actvity start where only one EditTextbox is present [closed]

I am working with Forgot password, where I have single EditTextBox and a single submit button. So whenever I am opening this Forgot password page, my keyboard is opened at the start of this page. In ...
1
vote
2answers
227 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 ...
2
votes
0answers
809 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
votes
1answer
225 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 ...
2
votes
1answer
268 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 ...
7
votes
2answers
173 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 ...
7
votes
3answers
9k 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
vote
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. ...
1
vote
1answer
223 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 ...
0
votes
1answer
1k 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 ...
0
votes
2answers
216 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
votes
2answers
322 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 ...
12
votes
4answers
8k 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
votes
1answer
366 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 ...
1
vote
0answers
114 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
votes
1answer
340 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 ...
0
votes
2answers
738 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 ...
3
votes
1answer
246 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. It's my first job as developer. Currently I'm using my two private Android devices for development. Is it common ...
3
votes
1answer
90 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 ...
1
vote
1answer
469 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
votes
2answers
516 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
vote
2answers
311 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
votes
1answer
403 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 ...