Android is Google's software stack for mobile devices. For non-developer questions, see http://android.stackexchange.com
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ِAndroid - create class to handle MarshMallowPermission
Here is my class that handle all MarshMallow Permissions I prefer separate it class as I will call its methods in all my app .
at first I get used to check permission by this way
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Combination of Java's Future and Android's AsyncTask
My goal is create a class which implements Future interface of Java (get, cancel, isDone...), yet provides callback like ...
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48 views
HttpRequest class using AsyncTask for Android application
I am using the following class to retrieve a http response, which contains data for my Android App. Everything works fine, but there is a performance issue. I get the following warning when requesting ...
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Cursor adapter adapts text views to wrong location on list view [closed]
I'm adapting data to a list view using a database adapter. Here is the code in my main activity setting the database adapter to the list view.
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1answer
34 views
MainActivity RecyclerView lags
My app, particularly the MainActivity suffers from some lag when I scroll through the RecyclerView. I tried to fix ...
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60 views
Testing a ViewModel in Android - MVVM with DataBinding
I am using MVVM pattern with databinding. I have written tests. But I want them reviewed. The test is related to JUnit test on the ViewModel.
FeedViewModelTest....
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1answer
46 views
Android log in file for testing purpose
I have created a method which shows log in logcat and also writes into the file. Every time this method is called it appends String in file. There are so many read/write operations on disk/non-...
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1answer
73 views
Android RecyclerView holding rows of razzles
I have a RecyclerView that works and everything, and this is how I coded it:
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89 views
Android generic SQL database handler
Starting with the fact that creating the classic database handler in Android is really annoying and it usually takes a lot of time since you have to create one handler for each object, I thought at ...
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Android Login Screen implemented in Model-View-Presenter Pattern
So this is my first time implementing the MVP pattern in Android.
As I understand the presenter should not contain any Android specific code. I am using ...
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36 views
Send a volley request in the background every 10 seconds to a server
I created a class called HomeService that extends the android.app.Service. I then declared and implemented a class called BackgroundService which extends Thread. In the run method of the class I call ...
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3answers
156 views
Android Activity with a RecyclerView inflated by a big ArrayList
This Activity has got a RecyclerView that is inflated with an ArrayList that is ca. 400 Elements.
This is what an Element of ...
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27 views
Implementing FusedLocationProvider for more than one Activity in Android
I am trying to implement Google Maps in Android. I am also trying to learn different design patterns.
I want to use location in more than one Activity hence I have used a class named 'GoogleLocation' ...
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Communicating upwards from nested fragments in Android
I recently asked this question on Stack Overflow, but now that I have a working example, I would like to have it checked.
I set up the layout like this:
I am going off the idea that parents can ...
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32 views
Android Internal Resource Reader
I'm not really sure if this is right, so it would be great to have it reviewed.
I'm creating an Android library and made a final class with completely static methods for getting internal resources (...
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1answer
55 views
Using a new thread to post to observers
I have implemented my own Observer pattern. I want to post my events in a new thread. This thread would simply call all the the observers/listeners with the posted event.
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3answers
334 views
Finding and moving the next obstacle in a player's path
This code finds the next obstacle in the player's path, then moves it. I am trying to make it more efficient, because this code runs for each frame, and it lags a bit. It does work though.
There are ...
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1answer
83 views
Simple calculator in Android Studio
I have been learning Java for a few months now and have created a basic calculator application in Android Studio for a school project. Since this is my first attempt at programming, I am sure that my ...
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Base activity for handling network state changes in Android
I had the need in one of my activies to handle displaying a message to the user when the network disconnected, and then reload the data for a RecyclerView adapter ...
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Tablayout code for Android
I am using Tablayout for an Activity in my app but for some reason icons for each tab using ...
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1answer
42 views
5 input based search form for Android
I've been trying to look for a better way in which a user has up to 5 inputs in which they can search for results in a database.
I have 2 EditTexts in which the ...
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1answer
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SearchActivity to search through an ArrayList<Obj>
I've coded this class that lets me search through an ArrayList displayed into a RecyclerView. This is the class:
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How do I reduce the use of if else in this display function?
I have a method which uses the same code over and over again. I would like to optimize my code in such a way that there is no repetition in my code. I am sure there is a better way to do things ...
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45 views
Download of files in Async task for Android
I am using AsyncTask in Android to download files from the server. Is there a way by which I can improve the process? Can the download happen any faster? Is there a ...
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1answer
48 views
Video Feed via TCP Socket
I managed to send video feed over tcp socket using code and decode of string64. My problem is that the video feed is kinda laggy, and it's probably because of this time between coding and decoding.
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3answers
638 views
Validating an IP address and returning the reason it's invalid
I have a method that validates a user-written IP address in an Android application. If it's invalid, I need to know why and notify the user using a Toast.
I ...
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2answers
44 views
CSV to Object converter with JavaDoc comments
This is a simple class but I'm looking to check I have the basics down to scratch.
Is my documentation thorough enough? (I'm very new to writing JavaDoc) Have I created too many variables, and does ...
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56 views
Sending an image from a server to a client over a TCP socket
I only have one video stream of 30 FPS to send over a TCP socket and it's sending a lot of data through my router. Everything just lags I can't even display the image.
Is there a way to improve my ...
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Libgdx play class becoming overwhelmingly complex/messy
I came here today to see if I could get some pointers to cleaning up some code for my game. I started developing this game, and now the class seems to have gotten way to big. It's the play screen ...
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Places and their PlaceCategories
I'm going to start small here because I actually have several questions but I'll go one at a time.
In the app I am making to better learn Java/Android/SQL/OOP, I have a page where a user can define ...
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35 views
Hde keyboard when pressing outside EditText
I am using the following method to hide the keyboard when the user touches outside edit text.
I am passing most top view into my method ...
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0answers
66 views
Checking authentication status by looking for a cookie
I'm an Android newbie. I have this function in my code:
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95 views
Handling Firebase's asynchronous calls Android
I have written a helper class to manage callbacks from Firebase's asynchronous calls. Can this be implemented in a better way?
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1answer
84 views
Android MVP Adapter
While implementing Android Activity component using MVP pattern a discussion arose - who should be responsible of creating list adapter - view or presenter?
If ...
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87 views
Releasing references with server connection library
I work on a custom library (Co.line) to do HTTP requests in REST. I tried to think of reducing the memory usage by cancelling the thread background and destroying all references. It uses a ...
3
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1answer
56 views
Catching notifications using Accessibility Service Android app
I am currently working on an app in which one of the tasks is to catch the notifications of different applications (phone call, Facebook, Twitter, Whatsapp etc...). Now I will have some values pre-...
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36 views
Check fragment for exclude show same fragment again
I use this code to check a fragment before showing it. What can you say about it?
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49 views
Randomizer App as Decision Maker
I am a newbie and self taught in programming.
This is my first attempt to make app.
Appreciate any input or comment to make my code writting skill better.
https://github.com/snufflesrea/Decision-...
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1answer
79 views
Counter with increment and decrement buttons
For my first Kotlin project, I'm implementing the Redux pattern with simple Increment and Decrement buttons and a text view to display the current value.
My main questions have to do with Kotlin and ...
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3answers
463 views
Does this method contain multiple implementations?
My teammate and I have a small discussion about the responsibility of a method. He thinks next method has two responsibilities and I think that only one.
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1answer
82 views
Android music-streaming app
This is my first time building an Android app or even using Java in the first place. All of this code does work, but I'm hoping to optimize it or find out if things could be done more easily than how ...
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87 views
Loading, saving and merging google-play saved games
I've written a class that handles all communications with the Google Play services. This class is meant to perform two main tasks, loading and saving a SQLite database to and from Google Play Games, ...
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Easily add Accessibility to your app as an afterthought. Yes, as an afterthought
Accessible apps allow more users to use your app; however, it is usually an afterthought for developers, and it makes your XML layout files messy whether Accessibility was a forethought or ...
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1answer
162 views
Using a LinkedList type of adjacency list to create the word game: WordLadder
The user puts in a starting word and an ending word. My code creates a ladder between these words of words that are different by one letter.
Start: gain
End: fire
Output:
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1answer
69 views
Android network API request
I often use a similar scheme work with an API project. Can it be made easier, or is there a standard approach?
This class creates an API request:
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1answer
84 views
An app that uses the quadratic formula to solve ax^2+bx+c=0 so long that the answers aren't imaginary
I'm a beginner to Java and Android programming, and I wrote this app in order to get some practice. It works, but it's most likely not as good or efficient as it could be, since I'm new. I'm hoping to ...
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1answer
96 views
Card payment strategies
In my project, I have 3 payment mode. Via Manually Entered , Card Swipe, and cash. I have 2 fragments named RecordCardManuallyFragment and ...
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126 views
Full screen WebView Android app
I've created a working Android app for my project website. I'm newbie too android dev so please review the code of this app. Any simplification or suggestion to optimize it much appreciated.
Thank ...
