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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0
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1answer
29 views

draw two models changing the MVP matrix (android opengl)

I'm newbie with opengl2 in android, and I'm making an app in which I'm testing some things. Now I was trying to duplicate a sphere object with a texture, so I thought it was enough to change my MVP ...
1
vote
0answers
45 views

Bilinear filtering by sampling corners of a texel

I'm trying to do bilinear filtering in texels to get the convoluted value of a 3x3 block. Implemented as below: offsetx = 1/width offsety = 1/height Fragment shader: "varying vec2 ...
0
votes
1answer
279 views

Fixed background on a SurfaceView

I'm currently working on a top-down twin-stick shooter for Android. I've got my player moving around and shooting, but I'm looking to add a large Bitmap background which is larger than the device ...
1
vote
1answer
830 views

Multiple enemy array in LibGDX

I am trying to make a multiple enemy array, where every 30 secods a new bullet comes from a random point. And if the bullet is clicked it should disapear and a pop like an explosion should appear. And ...
32
votes
5answers
23k views

Workaround to losing the OpenGL context when Android pauses?

The Android documentation says: There are situations where the EGL rendering context will be lost. This typically happens when device wakes up after going to sleep. When the EGL context is ...
1
vote
1answer
19 views

How to know when Android OpenGL Context has been preserved?

I am implementing a pause menu for my game in Android. If the activity pauses and then resume, It lose the OpenGl context. However if you use setPreserveEGLContextOnPause(true) it MAY preserve the ...
0
votes
0answers
7 views

Using Corona Labs SDK [on hold]

Has anyone tried out the corona sdk? Thinking of using their sdk to make something similar to Fun Run
1
vote
1answer
115 views

LibGDX: How to detect remote button press for Android TV?

On Android TV, I need to be able to detect the remote control centre button to start the game. I tried: if (Gdx.input.justTouched() || Gdx.input.isKeyJustPressed(Input.Keys.SPACE) || ...
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
2answers
627 views

Libgdx box2d crashing

im making a game in libgdx which i having a bunch of circle bodies floating around in space and when the player's body crashes into another body, that body deletes and creates two smaller bodies ...
5
votes
1answer
240 views

What's the best practice for a progress bar in OpenGL ES 2.0 (Android)

As the title says, what is the best practice for a progress bar in OpenGL ES 2.0 on Android ? My attempt: I make a texture (could be a single colour or otherwise), and then stretch that texture from ...
0
votes
1answer
20 views

libgdx collision on moving Rectangle with other Rectangle

I'm making a soccer game where you touch the screen and the player shoot the ball to the touched position with the objective of scoring goals when it hits the goal. The player is just a Sprite and the ...
1
vote
1answer
38 views

Binding tiles with Rect

I'm having trouble binding tiles with Rect. I've successfully bound other objects (such as the player, trees etc) in my game with rectangles but I'm unable to do the same with the tiles and I don't ...
0
votes
1answer
24 views

Translation matrix applyed to the view matrix not working (android opengl2)

I have managed to do an small app using opengl2 in android. It consists on a sphere moving over a rectangle, both with a texture. It's just a test in which I'm testing my first steps in opengl. Now ...
-2
votes
0answers
38 views

I have an assignment due on Friday to create an android game on Android Studio [on hold]

I need to create a simple android game on Android Studio..please help its my first time using Android Studio.
8
votes
2answers
7k views

VSync / real 30FPS on Android

I'm working on a game which can't run at Full speed on some devices. On Tegra2, with many optimizations, performance is near 40 fps. The framerate is stable but animations aren't smooth enough, so i ...
4
votes
1answer
301 views

LibGDX Box2D TileGame Efficiency

I am trying to implement Box2D into my top down tile game in LibGDX. Each world consists of a set of chunks, and each chunk is 16 tiles wide/long. The maximum/minimum chunks loaded at one time is 9 (a ...
0
votes
1answer
16 views

libgdx sprite placement

Im making a soccer game where you basically have to shoot the ball to the goal and the ball goes to where you touch the screen. Im having an issue with the ball though, when the ball spawns on the ...
0
votes
1answer
223 views

How to use Java 8 with Lib GDX in IntelliJ?

I have set the jdk to Java 8 and I have modified all the build.gradle files in my project to have sourceCompatibility = 1.8 instead of 1.6. My problem is that while it does work on Desktop it doesn't ...
0
votes
2answers
43 views

Handling accelerate in different devices

Hi I am adding tilt controls to my game.The sensor values I get are differ in different android devices which result in random behavior... Anyone knows how can I tackle this situation? I tried ...
0
votes
1answer
93 views

Black screen when launching on phone

I am coding a game in libgdx. While adding the background I used the html module to watch the results fast and easy on my computer. But when I try to see it on my phone I just get a black screen. My ...
1
vote
1answer
253 views

libGDX new TextureAtlas(filename) and new Texture(filename) drawing stale image data

I'm trying to draw an image using libgdx but no matter what I do, libgdx seems to insist on drawing a portion of an image I had loaded and used in an earlier game screen. In my current game screen ...
0
votes
1answer
234 views

Unity-UI not scaling correctly on android

My UI appears extremely small when i build and launch my game on my android device. Im working with unity 4.6. I've tried changing the UI scale mode of my canvas to all 3 types. Scale with screen size ...
1
vote
1answer
198 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. ...
2
votes
2answers
3k views

Unity Android Unable to convert classes into dex format AdMob

I'm a beginner Unity programmer (school-age), so I don't know that much about the system. On its own my app compiles fine, but when I implement the AdMob SDK (Google) 2.1, I have the following error ...
0
votes
1answer
225 views

How to implement a Trail using Cocos2dx

I'd like to implement a trail (like the white circles in Angry Birds) that chase my sprite. I already used CCMotionStreak, but the trail texture is "stretched" instead. Anyone has an idea how to make ...
7
votes
2answers
2k views

SQLite in libGDX

Does anyone have an example of how I can use SQLite in libGDX? I have a class in my original Android code that allowed me to easily access a database but I can't seem to find anything equivalent to ...
4
votes
3answers
1k views

How do I access a Unity class from an Android Activity?

I have made my own C# classes in Unity. How can I access them from the Android Activity that starts the UnityPlayer? Example: I have a C# class called testClass in Unity: class testClass { ...
-2
votes
2answers
28 views

i want to make four letter one word game. i have designed xml but getting problem in main activity java. [on hold]

i want to make four letter one word game. I have designed xml using four imagebutton and randomly load from string array, but how to code entire java file. i am beginner to programming.
6
votes
1answer
166 views

How to detect collision only in non-transparent texture?

I am developing a game using libgdx. I am trying to detect the collision between bee and tube. I am using the following code to detect the collision. if(player.getBounds().overlaps(boundsBot)){ } ...
0
votes
1answer
218 views

How to zoom and scroll in libGdx?

I am trying to both A.) Pinch zoom my game scene and B.) Move (scroll) my game scene but I have not found many examples. I learn more by examples than by reading API documentation (although I am ...
2
votes
3answers
195 views

(Corona SDK) sounds and buttons show up in simulator, not in an Android device

I'm a noob in android game development, started with corona sdk and outlaw. My project runs just fine with the corona simulator on my win8, however, when building it to my android device (galaxy s3) ...
1
vote
1answer
167 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 ...
0
votes
0answers
6 views

Libdgx and Overlap2D export settings for Android

So I have a problem when exporting assets from Overlap2D to Android Studio project location. When setting up libgdx I set the project to be for desktop and android and selected Overlap2D extension. ...
0
votes
0answers
4 views

Is there a specific file in the NDK that I need to link Unity3d to?

This is Android Development. I'm having issues with Unity saying that Android NDK isnt installed. I gave it the file path to the NDK directory. Its the exact NDK it told me to install (Unity). Do i ...
0
votes
1answer
15 views

Unity Android character controll with UI Buttons

So I'm trying to find a good tutorial which will explain how to controll character in 2D game when button is clicked (left, right, jump button). All the tutorials I've found are outdated and not ...
2
votes
1answer
74 views

LibGDX How do I create a Shop?

My game is fully working but now I want to make a shop so that the player can buy boosts or other useful stuff for the money the player has collected. What is the best way of doing this kind of ...
2
votes
1answer
784 views

AndEngine - Performance problems with many entities

I'm developing a rolling scene based game I'm loading all the entities from a XML file and create them in the Loading Scene recently I increase the game width , and by doing so , in the whole level I ...
1
vote
1answer
157 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); ...
1
vote
2answers
1k views

How do I refer to a native library with Unity 5 on Android?

I have a library called mylibandroid.a. This is given to me by another developer. I also have the iOS version of this lib, and have been able to access it from Unity. It is supposedly built for ...
0
votes
1answer
30 views

Unity5 build won't run on android 2.3.3

I made a game using one of the Unity tutorials on their site and now would like to run on my phone (LG P500). But when I try to run it on the device, it says "Failure to initialize: Your hardware does ...
0
votes
1answer
38 views

Sprites blurred in Unity (filter mode set to point)

I'm new to Unity and I'm developing Android game. When I connect my phone with Unity Remote and launch game, all textured are blurred and they look awfull. Did some research and set Filter mode to ...
1
vote
1answer
64 views

Centering an animation [libGDX]

I have the following class: public class AnimationDemo implements ApplicationListener { private SpriteBatch batch; private TextureAtlas textureAtlas; private Animation animation; ...
-1
votes
0answers
20 views

how to move with update trajectoryPointCount [duplicate]

I am a new game developer, I am making a game, but I have a problem, I don't know how I can update my trajectory point in OnDraw method. Could anyone please help me? Thank you! enter code here ...
0
votes
1answer
320 views

Transparency in GLSurfaceView

I'm new in game development. I have a view using GLSurfaceview and call in MainActivity. i want to make transparent that view. i have tried setZOrderOnTop() method in MainActivity and glClearColor() ...
1
vote
0answers
46 views

Libgdx stops all sounds when there are lots of sounds

I'm making a 2D game for Android using Android Studio with Libgdx in Java. I have a class, called SoundPlayer, which holds an ArrayMap. The key is the name of the sound file and the value is the sound ...
0
votes
0answers
57 views

How to update projectile trajectory point?

I am a new game developer, I am making a game, but I have a problem, I don't know how I can update my trajectory point in OnDraw method. Could anyone please help me? Thank you! Here is my code: ...
5
votes
2answers
594 views

Main game objects as static

I'm making a game for Android using Android Studio with Libgdx in Java. In my game there are main object like Screen, ObjectFactory, SoundPlayer, Painter (Responsible for drawing) and a few more. 'til ...
0
votes
1answer
51 views

Prevent button layout changing after one is removed?

I have a layout with four buttons in it. I end up removing one of the buttons using: View v = (View) findViewById(R.id.ViewId); ((ViewManager) v.getParent()).removeView(v); The ...
0
votes
1answer
69 views

How could I draw text in an 'info bubble' with libgdx?

I am making an android game using libgdx where there are textures on the screen which represent people. When you touch a person sprite I want a little info bubble to pop above their head displaying ...