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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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, ...
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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 ...
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21 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 ...
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1answer
69 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 ...
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1answer
32 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 ...
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1answer
57 views

LibGDX: Is it necessary to set a stage as an input processor when creating a touchpad?

I mean, I've been searching it, they always use set a stage as an input processor after they had added the Touchpadto the Stage because it extends from Actor indireclty(it extends from Widget that ...
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1answer
117 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)){ } ...
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17 views

LibGDX: how to implement 2 cameras in a unique stage

I am quite new to LibGDX. I am trying to make a game, where the character is an Actor, and it's controlled by a Touchpad(included in the main Stage as an Actor too). My problem is that I am trying to ...
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70 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 ...
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1answer
65 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 ...
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1answer
43 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 ...
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1answer
35 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 ...
3
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1answer
126 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 ...
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1answer
39 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 ...
3
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1answer
31 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, ...
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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
77 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). ...
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votes
1answer
69 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 ...
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1answer
33 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 ...
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0answers
16 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.
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1answer
47 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 ...
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0answers
46 views

Google Play Games, Inbox Freezing

I am developing a game that uses Google Play Games and turn-based multiplayer. I have the latest Google Play Games 3.5.17 on my Android 5.0 phone. The problem I have is that, after a while of using ...
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0answers
54 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 ...
3
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1answer
67 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 ...
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0answers
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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 ...
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0answers
45 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 ...
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0answers
23 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 ...
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0answers
60 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 ...
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1answer
24 views

Google Games Services Display Orientation

I'm developing a game using LibGDX and I'm using BaseGameUtils to implement Play Games Services in it. It's working very well. But my game is in landscape mode, so when I call leaderboard or ...
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1answer
42 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 ...
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0answers
21 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 ...
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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
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1answer
29 views

cannot implement GLSurfaceView.RENDERMODE_WHEN_DIRTY

I'm trying simply to display an openGL surface when I click the screen using GLSurfaceView.RENDERMODE_WHEN_DIRTY mode but the surface does not display when I click it , why ? my Activity : public ...
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0answers
40 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 ...
8
votes
1answer
114 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 ...
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2answers
70 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?
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0answers
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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 ...
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1answer
89 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 ...
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0answers
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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?
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53 views

How can integrate a decibel meter into my Push To Talk (PTT) game?

I have am building a Push To Talk (PTT) game and I need to integrate a decibel meter into it so that I can measure and save the decibel level and identify the peaks (spikes) and add them together. I ...
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1answer
56 views

Can we port any game written in C++ with SDL to Android platform or we would need to change some codes too? [closed]

Just wanted to lean a cross-platform library!! Since SDL library supports iOS too..
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1answer
31 views

Speed from delta time not correct

My game object isn't moving in correct speed calculated from deltaTime bellow. It should reach half of the screen in one second, on any device. Devices: tablet A7600-F - deltaTime = 0.03355443; ...
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votes
1answer
40 views

Movement calculation from delta time

I'm trying to calculate object speed from delta time, to get object reaching the same distance in same time on all devices. What I did: while(running) float timeSinceStart = System.nanoTime(); ...
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1answer
43 views

SDL2 and density-independent pixel

I'm currently using SDL2 on Android and that's my first experience with that library (to be honest, mainly chosen because I'd like to learn it). What is puzzling me is how to deal with different ...
0
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1answer
39 views

Using deltaTime

I got deltaTime calculated as 2.7855414E8 on my tablet. How do I get speed for specific device, calibred by deltaTime? For example, if I need object with moving speed, which is about reaching half ...
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0answers
37 views

The new android studio? [closed]

I got the new android studio, and I noticed one thing when creating a new activity. The layout that corresponds with the java for the activity is made twice, once as a content: This new layout ...
1
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1answer
47 views

Different screen sizes? (landscape)

I want to make a separate landscape layout for each size of my original layout I have activity_main.xml. I have adapted it to be able to fit multiple screen sizes: Now, I want to create a ...
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1answer
43 views

Calculate speed of object for specific device

I have an object - player - which is moving X px ahead each update (updates based on device FPS). From my results, to get average same player speed on all devices, is to do calculation screenWidth / ...
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0answers
35 views

Sprite animation in Android view

I'm looking for a way to have different sprite animations in individual Android views. I try to use LibGDX and AndEngine but most I could find was how to get an Activity with the sprite animation. ...
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1answer
75 views

Different screen sizes?

I have looked through all of the android docs and many stack overflow questions, and I have a question on supporting multiple screen sizes. If I have some drawables, I know I need to put them in ...