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
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1answer
269 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 ...
2
votes
1answer
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
70 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
1answer
207 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 ...
0
votes
0answers
17 views

how to temporarily turn off/on multisampling for an OpenGL ES 2.0 render context in Android?

In my OpenGL ES 2.0 Android app, I render to an EGL surface with >= 2 samples; I obtain this surface by passing: EGL14.EGL_SAMPLES, 2 as part of the attribute_list argument for egl.eglChooseconfig() ...
1
vote
1answer
233 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
122 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 ...
0
votes
1answer
22 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
2answers
38 views

Sign APK of several games with same or different key?

When you choose a key for signing your APK for publishing in GooglePlay, you need to care of this key for the next 25 years if you want to do updates. The key should not be shared with anyone. The ...
1
vote
1answer
257 views

What would cause my script generated buttons and text to show in Unity and not on my phone?

I am using Unity 5 and the built in GUI tools. My static GUI shows up just fine which makes me think it's not a text/font issue or some such. Again, it all looks good in the Unity editor when I hit ...
2
votes
2answers
3k views

Android multitouch: How to detect movement on non-primary pointer / finger?

How does one go about detecting a secondary/non-primary finger moving? There is: ACTION_DOWN and ACTION_UP to detect a primary finger pressing the screen / leaving the screen ACTION_POINTER_DOWN ...
1
vote
1answer
80 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 ...
4
votes
2answers
115 views

How can I randomly spawn circles on a screen but make sure they don't overlap?

I just need a general idea for how to do this. I have a list of Circle objects. Circle { private int yCoord; private int xCoord; Circle(int a, int b) { xCoord = a; yCoord = b; } } I randomly ...
0
votes
1answer
20 views

Make a sprite jump to a certain direction in libGDX

I was wondering how you can make a sprite jump to a certain direction in libGDX just like the brick does in the famous mobile game "Amazing Brick' I want to make my sprite jump up a bit to the right ...
0
votes
1answer
36 views

Scene2d How to make it work for a Visual Novel

I kinda understand that you can use Scene2d for a Hud or stuff like that, I'm new to Java and so far I've done games that update in real time like let's say Flappy bird (simple games), so i wanted to ...
2
votes
1answer
726 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
70 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); ...
2
votes
2answers
116 views

Profiling LibGDX game with GLProfiler

I am trying to profile my LibGDX game, It runs on 60FPS on PC and 42-45 FPS on MY mobile phone. Either I improve performance and raise it to 60, or lock it at 30 (I don´t want to do this). I have ...
4
votes
2answers
617 views

How can I change width of sprite Dynamically?

I want to change width of sprite dynamically but i can't perform it.!! Here i want to change only my white sprite i want to use these type of facility in my game in using AndEngine I want to display ...
0
votes
1answer
2k views

Alpha Value at 0 Shows Black for Android Canvas Bitmap

There have been a few questions similar to this but none seem to give a straight answer. If I am creating a Bitmap from a .png image and want to set a color (i.e. true pink) to transparent, the color ...
0
votes
0answers
22 views

Alternative Sound lib with LibGDX

i'm making a 2D game for Android in Java using LibGDX. I find LibGDX sound management not good enough for me. I wonder if it's possible to use an external lib for playing and managing the sound and ...
2
votes
3answers
163 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
90 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. ...
0
votes
1answer
51 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
2answers
754 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 ...
1
vote
2answers
182 views

Game lags when my player collides with a specific object (solution known, unsure how to implement)

I'm developing a game in Android using LibGDX (although this is more of a JAVA problem than an engine problem). My aim is to have my player bounce off one spring onto another that will eventually take ...
0
votes
1answer
41 views

WiFi Game Controller Protocol

I'm wanting to use mobile devices to control a game. I'd like to use an industry standard protocol for wifi game controllers rather than roll my own, but have been unable to find any standard. Does ...
0
votes
0answers
36 views

How can I change the color of the default android drawable star?

I asked a question before and I got an answer to do this: Drawable drawable = getResources().getDrawable(android.R.drawable.btn_star); drawable.setColorFilter(Color.YELLOW, ...
0
votes
1answer
41 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 ...
1
vote
1answer
93 views

Unity Augmenter Reality on Android with Video playing

Hey sisters and brothers, So, I created an augmented reality marker, which works perfectly, I was able to display 3 shape on the screen with my Nexus 5. I would like to replace my shapes with a ...
1
vote
1answer
47 views

Centering an animation [libGDX]

I have the following class: public class AnimationDemo implements ApplicationListener { private SpriteBatch batch; private TextureAtlas textureAtlas; private Animation animation; ...
0
votes
2answers
155 views

How to implement jump in a 2d game?

I am trying to implement jump in a game I have written for android using canvas. I have referred this tutorial for implementing jump. My code is like if(jumpKeyPressed){ jumpVel = ...
0
votes
0answers
34 views

Create a new layout?

After the user gets to a certain score in my game, I wan't to display a medal next to the users name. Doing this pro grammatically will make the image disappear after the user leaves the app. How can ...
1
vote
1answer
24 views

How do I run an APK in a device from the Unity IDE without rebuilding the binary?

I know that the button Build creates the APK in my disk. And the button Build and Run creates it and sends it to a real device if connected via USB. Question: Is there any way to "Run" from the ...
1
vote
1answer
41 views

Admob - gradle configuration error

I've followed this tutorial https://developers.google.com/admob/android/quick-start, but I'm stucked at gradle configuration. I've added line compile 'com.google.android.gms:play-services-ads:8.3.0' ...
1
vote
2answers
169 views

How to fix overly blurred texture / image in unity?

so, I'm not sure what caused this, let image below do the explanation : How to fix the overly blurred texture in unity? It's so frustrating, since I can't get it right, because when I tried it in ...
0
votes
1answer
59 views

Will this impact my game's speed?

I have read the android developer guide to working on different screen sizes. My question is, if I only provide an image in the drawable file, and let android scale it for me, will it impact the ...
1
vote
0answers
31 views

Game layout is messed up?

After trying to add a banner ad to my game, the rest of my games content has moved up! I have the following XML code: <?xml version="1.0" encoding="utf-8"?> <RelativeLayout ...
6
votes
1answer
482 views

Word game - board implementation?

I'm working on a boggle type game for android, using libgdx. The user is presented with a 4x4 grid of letters and must find words by dragging their finger over the letters. Unlike boggle I want used ...
1
vote
1answer
25 views

How to add images?

I was adding images after reading in the documentation: This means that if you generate a 200x200 image for xhdpi devices, you should generate the same resource in 150x150 for hdpi, 100x100 for ...
3
votes
1answer
78 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 ...
1
vote
1answer
151 views

How to clip or mask entity in adnroid/andengine?

I want to implement masking with sprite in Andengine. I want same functionality as in ios class called SKCropNode which works like an masking node! Is there any workaround like this in ...
1
vote
1answer
12k views

'Resetting' Google Play Games Services so app forgets it previously connected (so it shows confirmation screen again)

When I first integrated Google Play Games Services into my app, it came up with a 'confirmation screen', something like: App Name wants to connect to Google Play Game Services I don't recall the ...
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vote
0answers
37 views

Unexpected behaviour after adding animator and Unity editor crash

I have realy strange problem which accured after adding animator(I suppose) to prefab Object. Situations looks like follow: I had object which have only sprite renderer, collider2D and script ...
2
votes
1answer
190 views

Scene2d Stage Actor setup issues

I am creating a game using libgdx. In the same each level has a class. I have stage as a member variable of the class. To this stage, I add actors. Inside the levels class, I have attaced the input ...
1
vote
0answers
18 views

LibGDX: ActorGestureListener after change position

I have this code to get pan touch inside an Image and it works fine, but when I uncomment this line img.setPosition(100, 100); it doesn't work anymore, why? Texture tex = new ...
1
vote
1answer
353 views

Android OpenGL EGL context lost

I'm developing simple Android game in OpenGL ES 2.0 and the development stage is getting closer to publishing game on play store, but I'm still unsure about EGL context behaviour on different devices. ...
2
votes
0answers
26 views

Libgdx - multiple images in a group, best practices - also overdraw question

I am trying to right a card game, that will have an image in the middle, a coloured border and potentially a symbol in the top left. I am using libgdx and a stage/scene2d. The image will change ...
3
votes
1answer
22 views

How can I communicate a Joystick with a SurfaceView?

I have two classes: JoystickView (Extends View). GameView (Extends SurfaceView): It will be updated by a Thread that call the onDraw Method. Now, if I retrieve a direction by OnTouchEvent inside ...
2
votes
1answer
659 views

Why does my Unity Android export fail with “No resource identifier found”?

When I try to export my Unity game to Android, I get this error: CommandInvokationFailure: Failed to re-package resources. See the Console for details. F:\Android SDK ...