Android is an operating system for mobile devices developed and maintained by Google, Inc. This tag should contain specific programming questions about Android.

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2
votes
1answer
70 views

How can I fix my audio? (prioritize)

When two audio's are played at the same time... the sound is cancelling out. How do I fix this weird phenomenon? I have some code where there is audio on button click and audio in ten second ...
0
votes
0answers
38 views

Two sounds played simultaneously cancel out? [duplicate]

When two audio's are played at the same time...the sound is canceling out. How do I fix this weird phenomenon? I have some code where there is audio on button click and audio in ten second intervals ...
3
votes
1answer
103 views

How do I stop my timer when I close my game?

Background: I have a background service with a timer. It opens up a new activity when 20 seconds are over. Currently, my app is using componentCallbacks2 to detect when the user has pressed the home ...
0
votes
2answers
102 views

Connect phone to computer? [closed]

In order to test out my game, I need to use my real life device. The problem is, android studio isn't recognizing my device plugged in: The problem: My device isn't getting detected in android studio ...
4
votes
1answer
193 views

Multiple inputs for Google Cardboard on iOS and Android?

So far I am having a problem with having only a singular input mechanism (the magnetic trigger) for Google Cardboard games. Are there any other options to augment this in order to have at least two ...
2
votes
1answer
88 views

Calculate average velocity of the object before the game start

I have a game object (player), and with device screen width and average FPS, I'm able to calculate exact velocity for the player to reach whole screen from left to right in a specified time (fx. for 1 ...
2
votes
1answer
319 views

In Unity, on an Android device, CaptureScreenshot writing to Phone, but persistentdatapath linking to the external card

I'm using CaptureScreentshot() to get an image. But when I try to access it on an Android device it's giving me: Could not find file "/storage/emulated/0/Android/data/appname/screenshot.png" When I ...
-1
votes
1answer
39 views

Change Andengine Text By clicking and typing a new text like native android EditText

I have a board in my game, with a name. I want to edit it on a button click (not by text.setText("text") method ) i want the user to enter a text and set it there. I couldnt find, how to change the ...
1
vote
0answers
51 views

How can I detect sprite collisions out of screen?

I am creating an Android game using andEngine library. I have enemies coming from out of the screen into the screen. I already know how to detect collisions, but is there any method I can use to ...
1
vote
1answer
205 views

Calculating delta time

I'm trying to calculate deltaTime, but it's not correct. What's wrong in my code? //declared outside private long timeSinceStart = System.nanoTime() / 1000; private long oldTimeSinceStart = 0; ...
0
votes
1answer
79 views

Game speed on different devices isn't same

I have an app, in which I have constant int speed = 5; On each update, the game object (player) is moving 5px ahead. Problem is, that I can't handle that on different devices - older devices is having ...
0
votes
0answers
69 views

Android onResume called after screen turned off, starting the app running even while screen is off

I'm building a simple 2D game and I am getting strange results and calls the the onResume method when I turn off the phone screen while in the game. So I have two questions: 1. How is the pause ...
4
votes
0answers
121 views

Is there a way to determine Android physical screen size?

We're currently porting our games to Android, and would like to be able to release a universal build for tablets and phones. Is there a way to determine the actual screen size or DPI in order to ...
0
votes
0answers
14 views

Android App Update not automatically installed on devices

I published my app update yesterday and users can manually update it on Google Play, but it should be installed automatically. Does this have anything to do with my certificate? I receive a warning ...
1
vote
2answers
91 views

How can I exclude my enemies from spawning in certain zones generated at random?

I have a code where I randomly generate enemy spawn position, but I want to exclude some areas since it's colliding with some sprites it shouldn't collide with. This is the code where I generate the ...
0
votes
0answers
230 views

Setting Up A Visual Studio 2015 Android C++ Project To Utilise The SFML Library And compile On An Android Device

So in Visual Studio I have installed the cross platform tools to set up a C++ project for Android and iOS such as the Android SDK, NDK and the corresponding USB drivers required to debug the program ...
2
votes
1answer
40 views

Draw lines in game scene [closed]

I want to do game for Android that allows draw lines. These lines should be physic object at the same time. I am good at Unity3D and I tried in Unity3D. But it is not supported. What engine should I ...
18
votes
5answers
2k views

How to compress game frame by frame animation to a minimum on disk

I developing a game like Age of empire (buildings on map) and for every building I have a sprite sheet for its animation. I am using frame by frame animation to animate the building ( not aware of any ...
0
votes
0answers
92 views

LibGDX: open android camera

I need help, I can't find a solution to open camera device in my libgdx app. I'm developing it only in Android for now but I have this issue. I need only to open the preview view, no snap picture o ...
3
votes
1answer
95 views

Fixing the size?

My app isn't compatible with all screen sizes. When testing on a small size, my textview overlaps with my button. So, as suggested on the Android Documentation, and many stack overflow pages, I ...
0
votes
0answers
70 views

Does the sound need to be fixed?

Are there special requirements for audio for different devices? I have been stuck on this for around two days now, and would really appreciate all the help I can get. I have some audio in my code. ...
1
vote
1answer
154 views

LibGDX - Level management on a level-based game

I'm new to LibGDX and android development in general and am trying to do a puzzle game. Being a level-based game, i'm trying to make it so in every level a certain number of blocks (just rectangular ...
9
votes
0answers
301 views

Load ads in splash screen?

I have some ads that take a very long time to load. I was wondering it it is possible to have them load while the use was in the splash screen. I have looked at this answer: ...
4
votes
0answers
38 views

Only working on certain devices? [closed]

I am designing my first android game, and this is my first question on gamedev.stackexchange. My MediaPlayer is null on my genymotion emulator, but is working fine on my actual android device. I ...
2
votes
2answers
2k views

Error building Player: CommandInvokationFailure: Failed to re-package resources. See the Console for details

I get following error while building to Android with Unty 5.2.2f1 (with a new&clean project). Notes: I use GPGS 0.9.27 and Soomla Core 1.2.1 and Profile 2.2.1 and maximum supported Facebook ...
1
vote
0answers
21 views

Android Game Development. Type Usage for Entity Positions

I've recently started developing on Android and have made some basic apps. I now wish to start development on a game project. I have intermediate skill in Java and will be developing with that ...
2
votes
0answers
37 views

libGDX AppWarp integration problem

I have tried to use up AppWarp's old SuperJumper as a sample to create an up to date project from it with Gradle. Maybe it is good for learning. So, I have downloaded project from ...
2
votes
0answers
228 views

How to calculate delta-time on Android? [closed]

How do I calculate the time between frames on Android? I'm using this for the thread: public class GameThread extends Thread { private int FPS = 30; private double averageFPS; private ...
1
vote
1answer
30 views

Function call to AndroidJabaObject to an instance of com.prime31.PlayGameServicesPlugin causes the application to stop responding

Using Prime31 PlayGameServices attempting to call 'authenticate' causes the game to stop responding very soon after. There isn't much I can show as there's literally no logs showing up in logcat. Is ...
1
vote
0answers
142 views

Streaming 3d model --> unity android

I want to include a feature in my game that allows me to host raw 3d models (.fbx/ .obj/ etc., not AssetBundles) on a server. The game should download these files, save them to the device and load ...
1
vote
0answers
60 views

Which game engine to use for Android TV? [closed]

I am trying to tinker a bit on Android TV game development and I am trying to figure out which would be the best suited 2D/3D game engine for this purpose or, alternatively, which are the main aspects ...
2
votes
1answer
226 views

2015 android multiplayer server based Implementation

There are a lot of old posts about multiplayer implementations on SE, so i'm looking for an up-to-date answer. What is the best server-client implementation of real-time multiplayer now? I have an ...
2
votes
1answer
129 views

What happens if I increment a completed achievement on Google Play?

This question is about GPGS (Google Play Game Services). Say we have three achievements like: Achievement A: Kill a total of 3 enemies Achievement B: Kill a total of 6 enemies Achievement C: Kill a ...
2
votes
0answers
51 views

Improving Position Sync Bandwidth Usage in a Multiplayer Game

This is the class i use to sync position between clients in a multiplayer top-down 2D shooter game: [System.Serializable] public class MovementUpdateClass { public int MessageTime ...
1
vote
1answer
187 views

Switch beetween Screen on LibGdx application

i have set main class like this: public class MyClass extends Game { MenuClass menuClass; ActionGame actionGame; @Override public void create() { menuClass = new MenuClass(this); ...
4
votes
2answers
181 views

Does Google Play allow an account to log in to the same game on 2 devices?

I'm developing an online Android game with Unity. I want all Google Play accounts to have only one session logged in at a time. Do I need to write my own code to disconnect an existing session on ...
1
vote
1answer
212 views

Unity apple/google ID access?

After extensive Googleing I have not come up with a way to access Apple ID's or Google ID's from unity running in respective devices. Either ID's or something else unique to the accounts logged in. I ...
2
votes
1answer
71 views

EULER Integration

I'm a little confused over using integration to move a sprite. This is how I've always achieved this: float time = 10f; //Number of seconds to pass a pre-defined area (using the screen width in ...
1
vote
1answer
237 views

Sprites are rendered as black rectangles in android 4.0.x only

I have some problems rendering sprites correctly on a LG optimus vu (android version 4.0) with libgdx. Basically sprites are black rectangles, while other images that i declare as Texture are correct. ...
1
vote
0answers
160 views

My app has no client ID?

So I'm using the Unreal Engine 4 to make a mobile game. I'm currently trying to set up the Google Play services so I can do Leaderboards, Acheivements and In-App Purchases but I'm struggling with the ...
2
votes
1answer
157 views

Android with SDL2

How to link native code (it has SDL_CreateWindow) with Java application code? In my case, there libSDL2.so, also my .so library that uses the SDL. My method contains functions SDL_CreateWindow and ...
2
votes
0answers
73 views

Record voice and Comparison prefab audio in unity

I am android programmer that i Comparison Entrance voice with ready voice(prefab voice) for example when you say hello >>>>>to analyze>>>>>if your voice == prefab voice >>>>>you listen hello(play ...
1
vote
0answers
239 views

Implement Candy Crush like level graph

I want to implement road-map like level graph where in you can see what level are you and your friends are on. Just like we see in Candy Crush Saga.For people who have not seen Candy Crush Saga, ...
2
votes
0answers
55 views

Restore IAP in Android using Prime 31

can someone please guide me how to restore purchases in android using prime 31. What my basic understating is to get the list skus which player has purchased after he logs in with his account and ...
2
votes
2answers
65 views

IOS/Android Game programming [closed]

I am somewhat new to the whole game programming thing. I was wondering if I could develop a game for IOS and Android with using openGLES. if so how can I run the code on the devices and what are some ...
5
votes
0answers
82 views

OpenGL: Frame partially jumps back and forth

I'm working on a project with SDL and OpenGL. The game works great on Windows, Linux, OS X and iOS. However, the Android version is showing a problem on my phone in particular. I have tested another ...
3
votes
1answer
71 views

Setting 4 different enemy spawn zones off screen

This is my first game, so I really appreciate all the help. I want to create four enemy spawn zones for enemies and this areas are off screen. The enemies are coming from left, right, up and down, ...
3
votes
1answer
135 views

How i can control button input android?

i am android programmer and i want control button input in android for example i made a game that when you press back button in android mobile nothing happens but i want quite from game. This is ...
2
votes
0answers
62 views

Spawning enemies in four different positions with a fixed trajectory in android game

This is my first android game, I appreciate all the help. I want to define 4 spawning zones starting from out of the screen (left, right, up and down). Enemies coming from this areas have a fixed ...
1
vote
0answers
321 views

Snow fall animation android

I already got snow fall effect from here the main activity for the snowfall public class SnowFallActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { ...