Android is Google's software stack for mobile devices. For non-developer questions, see http://android.stackexchange.com
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0answers
6 views
Adding rows to LinearLayouts which serve as lists
I have a fragment with a ScrollView and, inside of it, I need maybe 5 or 6 lists. To make things simpler, let's say there are three lists - list of names, list of ...
2
votes
1answer
29 views
Message queue with multiple producer, single consumer and no duplicates
I had to make a message queue in an android app which my thread takes messages from and processes them. There can be multiple producers and duplicate messages should be avoided. Rate of insertion is ...
2
votes
0answers
22 views
Data formatting using string spanning
I would like to know how to make my code better. I'm still a newbie in Android, so any tips are appreciated.
The code is an AsyncTask class extender that formats data into a nice looking Spannable ...
2
votes
0answers
12 views
Using an Adapter with Parse query in Android
I'm an iOS developer new to Android. I'm creating my first Android app and I have several questions. My app uses Android Studio, gradle, and it's based on Parse (the backend). Basically, takes ...
2
votes
2answers
110 views
Validating multiple EditText fields
I am using the following method to validate if user has given any input or left an EditText empty. I am concerned about the ...
3
votes
1answer
44 views
Android Custom WebView
I have made a custom webview which is used to open a very heavy site in terms of database. The webview uses custom code for uploading files using an upload handler class. I need suggestions on how I ...
0
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0answers
10 views
Foundation for MVP in Android
I have been experimenting with the MVP pattern in Android, especially inspired by Advocating Against Android Fragments. I'm trying to build a library out of it, where the concept of ...
0
votes
1answer
34 views
Three buttons with click listeners that pop up a quick toast
I currently have three buttons, perhaps more to come. When I click on a button, I want a toast notification or message (popup message) to show up with some text. What I have works perfectly but it is ...
4
votes
1answer
63 views
Reading a text file API 15+
Is there a faster, more efficient way to read a text file than this implementation?
Taking into account phones capabilities:
...
2
votes
0answers
25 views
Structured use of Android SQLite transactions
I got tired of following Android-SQLite's transaction idiom, briefly documented here.
It requires too much boilerplate code, IMHO, especially when you add the obligatory null checks. So I came up ...
1
vote
1answer
79 views
Parsing a file for an Android device
I am trying to parse InputEvents of an Android device.
Background:
For an android device we have a utility getevent ...
4
votes
1answer
47 views
Porting a web-based POS system to Android
I'm currently porting a web-based POS system to Android. The Android version uses NavigationDrawer to navigate between menus.
What I need a code review on is my ...
13
votes
2answers
296 views
Localizing an enum in Java
I am currently using an enum in my Android application to display time periods:
Weekly
Bi-Weekly
Monthly
Quarterly
Yearly
I created the enum like this, because I wanted to know the description, ...
2
votes
0answers
43 views
Parallelized image transformations using GraphicsMagick
This is part of a script that I use for porting a TWRP Theme from one resolution to another. Respectively portrait to portrait and landscape to landscape. In this function entirely, it focuses on the ...
2
votes
1answer
60 views
Android - Simple multi-activity app
This is a task from lab classes at my university. Problem statement was to showcase following features:
Multiple activities in app.
Passing data from one activity to another.
Changing behavior of ...
3
votes
2answers
81 views
Extracting a sentence containing a specific word from a longer text
My goal is to return a specific sentence in a story that contains a given word. Returns null if the word is not in the story. I'm ok with returning the first ...
3
votes
0answers
62 views
Is this test sane? I may have re-invented the wheel on how to test that a method does not block
I have an Android service which must offload a task to a different thread but schedule the response callback unto the calling thread. After much thinking I came up with this code:
...
7
votes
3answers
50 views
Saving and restoring RadixTree object
I have a large word-file which is fixed with over 240 000 words. I need to check if a specific word exists in this list. I thought that it would be a good idea to create a ...
2
votes
1answer
39 views
Downloading, decompressing and inserting data into an SQLite database
I have implemented a Service, which executes three operations, in the following order:
Downloading a compressed (.zip) CSV file
Decompress the CSV file
Reading the CSV file and inserting the data ...
3
votes
1answer
54 views
Functionality for automatic retry after exception
I have made the following system to automatically retry network calls if some exception is thrown. (Earlier posted on stackOverFlow, solution inspired by what @Boris answered)
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0
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0answers
39 views
Switching between several animations
I am making a game and my main character has many different states. Every state has different animations, for example ducking, flying, jumping, walking, hit by enemy etc.
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1
vote
0answers
73 views
Getting device's location once in Android
In my Android app I need to get device's location once after user clicks a button. I don't really need to keep updating localization after I get the location coordinates.
I created a class which uses ...
1
vote
1answer
79 views
Android Movie Class With AsyncTask
I've got a class called Movie and within this class I use an AsyncTask to get a Bitmap from ...
4
votes
1answer
104 views
Building an application activity
I'm beginning the long process of refractoring an Android app written entirely in SpaghettiJava™. I've been programming for a relatively short period of time (two years), and have tried refactoring ...
6
votes
1answer
120 views
Android Compass
I have made my first app in Android Studio. I made a compass using a sensor-listener.
I would greatly appreciate if someone could review my code (it is very short), and suggest improvements.
My ...
4
votes
2answers
249 views
Android App Interview (Minesweeper game)
I recently did an Android Minesweeper app for a pre-interview coding challenge before I could talk to any engineer and was rejected. This feedback was given but I'm not sure on some of it.
☺︎ Game ...
1
vote
0answers
119 views
Android calculator app
I am new to android developement.
Created calculator application.
Want to improve my code quality.
Will be helpfull for any advice to make the code better and more professional
(overall structure, ...
9
votes
2answers
400 views
Random 5-character token generator
I have an Android app that uses randomly generated tokens to log in. They're 5 characters long, are sent to a user's email address, and have a short lifespan, so I don't think I need anything that's ...
2
votes
1answer
78 views
Using a Subject to trigger a music list to reload
In my Android app I have a Service that is periodically polling a server for a music playlist XML. For certain occasions I also want to trigger a reload manually.
I am using Retrofit for the server ...
4
votes
2answers
135 views
ThreadPoolExecutor singleton
I'm trying to build a ThreadPoolExecutor singleton to use it across my app. I'm very new to this concept and after going through Google docs I have created this:
...
3
votes
1answer
105 views
Tic Tac Toe Android game
Can you help me with suggestions regarding my code for Tic Tac Toe Game? This is my code, I've tested it and it works, but I feel like it can still be made shorter/clearer. I am not a good coder and ...
4
votes
1answer
81 views
Java (Android) abstract class correct implementation
I am looking for some comments on my code and whether or not this is the best way to create an abstract class. In addition, some of the abstract methods are rarely called so I use the base variables ...
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vote
0answers
33 views
Android: accessing global data through replaceable instance
I have to access global data shared between activities in Android application.
I have simplified DataProvider class to contain only one field - ...
1
vote
0answers
53 views
Fragment-changing in Android
My current code is kinda atrocious to switch fragments and everything, but I don't know a better way to check to see if the fragment I'm trying to switch to.
...
1
vote
0answers
45 views
Simultaneous works with multithreading
I have a case-study for an Android interview. I just wanted to get your opinion before I share the code with the company.
There are two fragments: one of them uses a thread-callback structure and the ...
0
votes
0answers
38 views
Adding markers in Corona SDK for Android
I'm having trouble getting the marker added. (only tried on Android devices)
I want to add the marker inmediately after the map is loaded.
Got it working adding a delay but couldn't make it work by ...
2
votes
0answers
120 views
Map Events From calendar provider to dates in gridview
I working on a calendar app on Android, using roomaorama, which is nice.
I am fetching all the events from Events table in Calendar provider once which seems not good performance wise.
The library ...
4
votes
1answer
79 views
Speed unit converter
I'm basically a newbie in android app developing. So I'm not sure if this is the right way to write these codes. I have made an app called "Zconverter". It has 9 fragments and the code i m showing ...
6
votes
2answers
389 views
2
votes
1answer
43 views
Asynchronous login form handler
I have an app that user submit the log in form , when it sent the data to server app create a connection for its account.
In this connection i have an integer field named as state.
the state value is ...
5
votes
1answer
65 views
Android Compound View Usage
I have 2 buttons for Terms and Conditions in my project, that I need to implement in multiple activities. I created the following class:
...
3
votes
1answer
83 views
File reader and streamer component running in its own thread on Android
In an Android project,
I have a class whose job is to read lines from a file,
and then pump those lines to a message handling thread,
looping forever until told to stop.
The main operation of this ...
2
votes
2answers
70 views
Commute info entry fragment for Android app
This is a simple app for taking down a user's home and work address, the days of their commute, and the times they go to work and go home. The times and workweek are entered via TimePicker dialogs ...
1
vote
1answer
19 views
Location information (store/send over network)
I have to calculate a user's location periodically and store & send it over the network on Android. I also have to indicate errors during calculation of location as well. The errors could come ...
2
votes
1answer
101 views
Automating heap dumps from an Android device or emulator
I've automated the process of extracting and converting a heap dump from an Android device/emulator.
I'd appreciate any feedback and improvements regarding style, bad practices, non-idiomatic code, ...
0
votes
0answers
310 views
Android app with an ActionBar, a ViewPager and an AsyncTask
I'm new at Android and Java development and I've put together a demo app to start learning, which is made of:
a main activity extending ActionBarActivity, in ...
11
votes
2answers
559 views
Simple LibGDX Pong game
I created my first java game in LibGDX and it's working fine but I'm 100% sure a lot of my code can be written shorter than now. Does anyone have tips how I can make this code better?
Like the ...
4
votes
1answer
186 views
Loading Bitmaps Efficiently
Suppose there is a huge bitmap, huge_bitmap, in the drawable-nodpi folder. I want to create a custom view with ...
2
votes
1answer
223 views
Displaying a list of players and their leagues
My question is mostly directed towards the principles of object-oriented programming.
I have an Android application and one of the activities has a ListView.
In ...
4
votes
1answer
264 views
Performance optimization on Box2D with libgdx
A few days ago I decided that I wanted to get involved with libgdx. So far I'm blown away by how simple it is to get something on the screen to work with.
I'm trying to make a very simple tech demo ...
