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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4
votes
1answer
88 views

Should texture regions sizes be power of two?

Is it advisable for my individual texture regions inside this texture to be power of two, or that won't make any difference? I've read on several places that it's recommended to use power of two ...
1
vote
0answers
74 views

error after changing the app name

I have made a game in Libgdx(eclipse).I changed the name of the app inside the string.xml file.Now I have an error in AndroidManifest.xml. in this line: android:label="@string/app_name"‬ (line 12). ...
1
vote
2answers
335 views

get View from LibGDX for Android

I am making a LibGDX app, and I need to get the view to put to an Android app. Here is the code to get the view: package jangkoo.game.shadowfiend.android; import ...
4
votes
2answers
103 views

What should be the code design for interactions management in a game with lots of object?

I'm writing a 2d game for Android in Java using LibGDX. The game consists many interactions between different types of objects. Most of them happen between enemies and bullets. At the beginning, I ...
1
vote
0answers
60 views

why doesn't work this example [closed]

I am new to game development. I was trying to use this http://blog.gemserk.com/2012/07/03/drawing-a-projectile-trajectory-like-angry-birds-using-libgdx/ projectile example in eclipse android using ...
4
votes
2answers
71 views

Does scene2d(libGDX) know when an image is drawn out of the screen?

I mean, I want to make a tiled map using scene2d, so in the render method of my game... @Override public void render(float delta) { Gdx.gl.glClearColor(0.5f, 0.5f, 0.5f, 1f); ...
0
votes
0answers
25 views

how to pin down a sprite partly in unity?

I am working on a simple do not let the bombs hit the floor game for android. You control a stick which can rotate to left or right depending on where on the screen you touch (left or right). But I ...
1
vote
2answers
85 views

How to make ranked matches in a head-to-head multiplayer game?

I am working on a field hockey like game for Android and iOS. Currently I support being able to play against another player online in a client/server fashion where one device host and the other ...
0
votes
1answer
93 views

Rotate heading relative to agent's local space

I'm having a little trouble translating a point in my game's world space to an object's local space. I have a cannon in my game with a normalized heading vector that's always supposed to point in the ...
1
vote
0answers
45 views

Image Buttons Have Low Resolution Quality

I'm using Synfig Animator to draw my animations for my android game I'm also using Android Studio to write the code for it, However. On testing, the images that i'm using looks very bad and unfocused ...
1
vote
0answers
26 views

Two devices calling the same servlet, one receives the intended response, the other receives null, but call is definetly made with valid parameters

I'm developing a multiplayer card game (this context only involves 2 players). One player invites other players. Once the game initiator sends all the invites, he goes to a "WaitingRoom" activity, ...
0
votes
0answers
23 views

Adding a score element to your android game

I said I'd show the following 3 classes so that you know exactly what I'm doing. The three class I posted are used in a game I'm working on and they are concerned with the login and register part of ...
2
votes
1answer
190 views

How do I check for collision between an ellipse and a rectangle?

I am working on LibGdx framework for developing a 2D isometric tower defense game.All my sprites are drawn in 2D isometric view. I have used an array list to store 8 points at boundary in the ...
-1
votes
1answer
98 views

Sprite disappears on android

I am programming a game in 2D for android and pc/mac. The sprite is the same and it's visible on the pc/mac. But once I use android and move the sprite, it disappears. The code is this: what could be ...
0
votes
0answers
23 views

Different layouts?

I have had trouble in the past with optimizing my game for different layouts, so that the players don't see the game in different ways on different screens. Someone told me that the normal directory ...
1
vote
1answer
37 views

Rendering sprites on a Mali-400 MP device

I started developing a small cross platform game engine using OpenGL, I am working actually on a sprite batch renderer. Everything is working fine on OS X, iOS, Win32, and some Android Devices. Here ...
0
votes
0answers
73 views

“Choppy” visual of game

I'm using interpolation to move objects on scene smoothly and in same speed. But in reality it looks like they are not moving smoothly - it looks like as game is running at 15 FPS or something like ...
0
votes
1answer
62 views

Libgdx fix small objects on android devices

I'm having issues with optimizing my game for android. I've basically created a simple menu with two buttons (see pictures below)! The size of the window is 720x480px ( in the Desktop Launcher ). My ...
0
votes
1answer
58 views

drawing a horizon / sky in OpenGL ES 2.0

I want to render a sky: My camera is at the origin, and I want there to be a white background for all world coordinates with z < 0 (would normally be considered y > 0, but I have a different ...
0
votes
1answer
56 views

How to Create levels in game in libgdx [closed]

I am create trying to create a Android game using Libgdx. I want to Create levels in game . So what i do. Which classes i need to use and how to create them explained. Plz help.Also i want to add ...
4
votes
1answer
469 views

Cross-platform C++/OpenGL ES development (iOS/Android) [closed]

I already have reasonable experience with C++ and OpenGL, and I have recently decided to try out mobile game development. After successfully creating a simple OpenGL ES Android app using Java, I ...
9
votes
0answers
286 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: ...
17
votes
3answers
1k views

Saving player's progress in a Unity game

I am making a game using the Unity game engine. I want to save the player's progress including level, experience points, chosen character, etc. Presently I am using playerprefs but I want to know ...
3
votes
1answer
49 views

Libgdx - GLSL shader which uses mod doesn't seem to work properly on android

Through trial and error I've managed to come up with a scanline-ish shader I'm satisfied with. On my desktop testbed it looks like this: Basically, every 2nd(vertical) pixel is darkened. However, ...
3
votes
1answer
217 views

Why is my game freezing?

Ok here is what I have done. I have made a simple test game where you move a character around. I built it and installed the app onto 2 different devices (as it will be a multiplayer game later). ...
1
vote
1answer
95 views

How to implement constant velocity and collisions without gravity

I am learning game development and i am trying to implement the AndEngineBox2D Extension such that my character is always moving at a constant velocity, when it collides with a body sprite, the ...
-1
votes
1answer
83 views

How would I implement a realistic stock market?

I'm making a corporation simulator, and it contains stocks. In the game you can buy and sell stocks, but I can't implement a realistic change in the price for them. How do I make them change up/down ...
-2
votes
1answer
48 views

how to set in vector float x y coordinates [closed]

i am use eclipse java android i am try to projectile trajectory in my game like angry birds example here ...
0
votes
0answers
44 views

How to pass a java string variable from android activity to unity3d C# script variable?

Require some help to pass custom autogenerated text from android activity to unity3d activity being started.
0
votes
1answer
49 views

My game has messed up layouts!

Earlier, I asked this question: Landscape mode for game? Where I had a directory for each and every layout, but the layout in the layout-land directory wasn't showing up when positioning my layout in ...
1
vote
1answer
405 views

Framerate on AIR for Android - Actionscript 3

I am currently working on making Android apps using AIR for Android. This is a sample file and package that I am running to test the FPS and Memory usage of my application while it is not even doing ...
0
votes
0answers
126 views

Update the Android Gallery after take a screenshot from android device using unity3d

Currently we are working on "Update the Android Gallery after take a screenshot Here follows our issues: The problem is that we are having a button,when we click on the button the photo gets saved in ...
1
vote
0answers
32 views

OpenGL ES 2.0: Highly variable time spent in GLES20.glDrawArrays(). How to find the cause?

How can I debug why the time take to issue exactly the same GL commands to render a frame, especially the call to GLES20.glDrawArrays(), is highly variable even when there is no garbage collection and ...
3
votes
1answer
77 views

My game is not shown in Play Market New Releases

I've published my app for like an 36 hours ago. It is possible to find it with exact search query ("Village Keeper") and it is available via the direct link. Thing is I can't find it in "New ...
0
votes
0answers
79 views

Landscape mode for game?

TL;DR: I have made 8 new layouts for each activity layout, but they are not showing up. For example, I have a layout-land directory with a layout, but that layout doesn't show up when I turn my phone ...
0
votes
0answers
66 views

SDL touch input on Android (3D camera rotations)

I have a question regarding rotating a 3D camera on an Android device using SDL for touch inputs. The desired effect should be when the user touches and moves their finger on the screen the camera ...
3
votes
1answer
99 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 ...
1
vote
0answers
66 views

My Game Renders Awful In Android Build

I'm working on a 3D Sniper game and have finished the project. When I test it on Windows (7). It's All Fine, not even a bug. But when I take the app into android (Bluestacks App Player), my buttons ...
8
votes
1answer
128 views

Will an optional device type specific permission hide my game in the Play Store for those types of devices?

I have heard in many places that if my app uses a permission not applicable to a certain device, it will not show up in the play store for that device. Now, in my code, I am playing audio. I mute that ...
2
votes
2answers
77 views

On Android, why would you handle expansion files yourself instead of using Google Play?

Why aren't all Android games using Google Play's ability to serve their expansion files? Why some are handling it themselves inside their apps?
0
votes
1answer
69 views

Libgdx - when / how to save data

I'm making a simple 2D game in libgdx, and now I'm at the point where I have to save data. I already have a mechanism to save the data itself. The problem is that I don't know when/where the procedure ...
0
votes
0answers
28 views

Andengine: Put a Sprite between 2 Parallax-Layers

It it possible in AndEngine to put a Sprite between two layers of Parallax-Background, without the Sprite moving together with the Parallax-Background? Like: First Parallax Sprite (will be above ...
0
votes
0answers
9 views

What is vector<E> how to use in android java [duplicate]

I making game i want use vector into velocity,position and rotation. But i don't know how to wark vector so please help. Thank you
2
votes
0answers
50 views

Fixed timestep periodical “lags”

I have fixed timestep code in my main thread, it looks like this: float oldTimeSinceStart = 0; float accumulatedTime = 0; float maxDeltaTime = 0.1f; // 10 FPS float fixedTime = 0.016f; // 60 FPS ...
0
votes
3answers
181 views

Adjust bitmaps according to screen ratios on android

I always thought that pixels were square... it turns out i'm wrong, and I am quite worried by this. This means that if I draw a circle, it will be round on my screen but it could be an ellipse on ...
0
votes
1answer
127 views

How do i set gravity towards a point in the centre in AndEngine with Box2D?

I have a scene and i can set gravity in the PhysicsWorld like this.mPhysicsWorld = new PhysicsWorld(new Vector2(0, -SensorManager.GRAVITY_EARTH),false); but i would like all bodies to gravitate to ...
0
votes
0answers
30 views

Touch and Collisions not working together in AndEngine when i set a custom Physics Handler

I have a set of custom sprites which implement a custom physics handler. The aim is to allow the user to move them by touch, then upon release they should act like a spring is connecting them to the ...
0
votes
0answers
46 views

Is it possible to use a Unity 3d Model with libGDX?

Can I use a 3d model like https://www.assetstore.unity3d.com/en/#!/content/36951 in a libGDX 3d game?
4
votes
0answers
78 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 ...
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 ...