Android :: GUI Libaray For IPhone / Droid Based On OpenGL ES?

Mar 18, 2010

Since both iPhone and Android support OpenGL ES, is there any open source or commercial GUI library we can use for these two platforms? Or is it doable (or how difficult) to port an application from one to another platform?

As I know, for iPhone only, libNUI (http://www.libnui.net) is a good choice (dynamic layout & mature), but it only provides GPL & commercial license. Any other open source tool similar with libNUI?

Android :: GUI libaray for iPhone / droid based on OpenGL ES?


Android :: Create A Php Based Iphone / Droid App With PhoneGap - Appcelerator?

Jul 28, 2010

I want to be able to make an iphone and android app using php. I have looked at phonegap and appcelerator and it seems like only html and javascript can be used. These frameworks want to make it easy to make apps using web technologies and PHP i would argue is one of the biggest web technologies, but I'm not seeing much (if any) support. I am new, so I could be wrong on multiple levels. So please enlighten me and let me know if what I am trying to achieve is possible.

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Android :: IPhone Or Android Apps That Use SMS Based Authentication?

Jun 1, 2010

What are some iPhone or Android applications that use SMS as their primary means of user authentication?I'm interested to see such apps in action. SMS-auth seems like a natural approach that is well-situated to mobile contexts.

The basic workflow is: to sign up,a user provides a phone number; the app calls a backend webservice which generates a signed URL and sends it to the phone number via an SMS gateway; the user receives the SMS, clicks the link, and is thus verified and logged in. This results in a very strong user identity that is difficult to spoof yet fairly easy. It can be paired with a username or additional account attributes as needed for the product requirements.Despite the advantages, this does not seem to be in much use - hence my question. My initial assumption is that this is because products and users are wary of asking for / providing phone numbers, which users consider sensitive information. That said, I hope this becomes an increasingly more commonplace approach.

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Android :: OpenGL Speed Issue - Code Contribution To Other OpenGL

Feb 25, 2009

Single Threaded OpenGL game ! (check bottom, you can download and use the helper class) Lighting disabled ! Depth Buffer disabled ! Culling enabled ! Textures disabled !

Just 176 integers (x,y values only) making 88 vertexes along with 132 index numbers making "44 triangles only"

Framerates I get is

with GL_BLENDING disabled - 145 fps approx only! enabled - 110 fps approx only!

I have the screenshot of exact code in the draw function here.. just 2 damn lines ! I have hidden only the comments.. click here to see it http://prasna991.googlepages.com/drawframe.png

variable details in the 2 lines of code =========================== ipts = 176 elements (only x and y for each vertex) totallinetriangles * 3 = 176 lineindexes = 132 elements - type "short"

Here is the screenshot of output drawing and how it will look like http://prasna991.googlepages.com/screen.png

OpenGL single threaded Initialization Helper ================================ Here is my OpenGL helper class.. makes the OpenGL initialization for newbies a cakewalk http://prasna991.googlepages.com/OpenGLHelperclass.txt

I tested by rendering on the touch event only.. frame rate drops only when u touch and drag and here I have just tested by tapping and releasing gently on the emulator and on the device

Is this the device limitations ? So graphics is actually a lot lot lot slower than on iPhone ?

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Android :: NDK OpenGL - Mixing Java And Native - C - Calls To OpenGL API

Jul 24, 2010

I would like to be able to use the OpenGL API from both Java and C (via NDK).

In Java, there is a GL object passed, which has all GL methods on it.

In C, you just talk to the native library.

In a single onDrawFrame callback (for which Java is passed a GL), can I use methods on the GL object, and also call NDK methods which access the openGL library?

In other words, is the GL object just a wrapper for the same instance of the native library?

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Android :: Opengl In Droid 2D UI / What's Function?

Apr 8, 2010

In android 2D UI, what's the function of opengl?

graphic system draw picture and text by skia->opengl->framebuffer, so in 2D UI what's the function of opengl?

in bootable/recovery/minigui the recoverty mini UI just display some png and text, why does it use opengl ?

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Android :: SIGSEGV 11 OpenGL - Only On Droid - Not 2.0 Emulator

Nov 10, 2009

We are getting a SIGSEGV 11 when launching our OpenGL activity. Here is the logcat. It appears to happen on Droid Hardware, but not the 2.0 Emulator. We are trying to do some testing to see if we can slowly build up some code to cause a crash.

CODE:....................

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Android :: Blank Textures On Droid (OpenGL)

Dec 28, 2009

I ran into a rather strange problem with my OpenGL game. While most textures look good, five or six are not drawn on Droid, and I don't see anything special about these images/models. For example, my HUD is made of 4 elements. The upper part is drawn correctly, while the lower part appears as white rectangles. The code used for loading and drawing these models and textures is exactly the same. Textures are 32-bit TGAs in both cases, POT dimensions, in - nodpi, inScaled==false, using GLSurfaceView to rule out configuration issues. No problems on G1 and Hero (and of course on emulator). And I don't have the Droid, so I can't just try whatever comes to my mind. Asked users to send me logs - no errors, all models and images appear to load normally.

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Android :: Opengl Visual Artifacts On Droid

Aug 14, 2010

A user sent me a screenshot of visual artifacting on droid. Apparently it only happens with multi-texturing enabled. --> Screenshot: http://adamhammer.ca/images/stories/cap201008140037.jpg

If I understand correctly though the GPU in the Droid 1 is ES2.0 Compliant, so it should have at least 2 texture units, any idea why I'm getting this weird look in my app on the Droid 1?

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Android :: Droid Reboot When Using VBO In Opengl Es Codes

Apr 5, 2010

I am working on a app which render geometrics with VBO in NDK opengl, it works in other phone, but in Motola Droid, it will cause the devices reboot.

The logs like next.

CODE:.........................

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Android :: Motorola Droid OpenGL ES Specs?

Oct 28, 2009

I just got my hands on this phone.

Here's my summary:

1) It's really fast. Runs all my games at max framerates.

2) The screen is 16:9 and will probably mess with your layouts and games and stuff.

3) It has a PowerVR SGX530. That's right around iPhone 3GS's GPU speed.

I believe the hardware supports OpenGL ES 2.0 but since Android doesn't, there's no way to use it right now. I did, however, dump all of the GL extensions and put them alongside the G1 and Emulator extension lists into this handy-dandy article - http://www.rbgrn.net/content/345-hands-on-motorola-droid-opengl-es-specs

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Android :: Use Opengl 2.0 On Droid With Framebuffer And renderbuffer?

Oct 31, 2010

How to do with the framebuffer and renderbuffer?

when we develop on iphone the function "presentRenderbuffe" is working.but on android ,how to display the renderbuffer? (![context presentRenderbuffer:GL_RENDERBUFFER])

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Android :: Tutorial To Use Opengl Interface In Droid Ndk?

Mar 22, 2010

If i wanna use the opengl interface in android ndk, then will it be possible to show
me a simple tutorial to let me master the android ndk?
i just wanna know how to operate in android ndk first.

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Android :: OpenGL Doesn't Render On Droid - Milestone

Jun 29, 2010

I'm writing a game engine.

I have a little example (see http://qrcode.kaywa.com/img.php?s=8&d=http://rokonandroid.com/rd.apk), that seems to work fine on every device except Droid / Milestone.

It displays a blue screen (due to glClearColor being set to blue), and nothing more.

I have tried with/without textures, and with/without VBOs. Yet still all blue screens on Droid.

What is unique about Droid and how it handles OpenGL, and why is it doing this?

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Android :: Enable Antialiasing In OpenGL On Any Of Droid Devices?

Jan 11, 2010

Has anyone found a way to enable antialiasing in OpenGL on any of the Android devices?

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Android :: Droid 2.0 And OpenGL ES 2.0 Support For Programmable Shaders?

Jul 9, 2010

Can I assume that, if a phone runs Android 2.0, it also supports OpenGL ES 2.0 and thus the graphic hardware has full support for programmable shaders?

IOW, does Android 2.0 as a platform mandate OpenGL ES 2.0 support? Or is it optional?

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Android :: Training Session / Course For Droid Graphics API - OpenGL ES?

Sep 25, 2010

Can anyone please recommend a training session/course for Android graphics API/OpenGL ES?

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Android :: Droid OpenGL ES Test Renderer Crash / Why Is So?

Oct 8, 2010

Once again I'm trying to get into openGL, but as usual I choke when passing around vertices/vertixes/whatever and every little detail can lead to disaster (wrong format, initialization not properly set up, where memory are saved, etc.).

My main goal is to use openGL for 2D graphics to speed up performance compared to regular cpu drawing.

Anyways, my openGL Renderer looks like this code...

With an IndexOutOfBoundsException, but I'm sure there are more problems with the code.

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Android :: Run GPS Based App (WikiTude) In Droid SDK Emulator?

Sep 25, 2009

Currently I am writing an Android application which uses WikiTude API. I installed the WikiTude browser application in the Android SDK emulator from Android Market (To get Android Market in emulator I followed this link http://forum.xda-developers.com/archive/index.php/t-529170.html).

When I run the WikiTude browser application in emulator it asks me to set location settings. I enabled "Enable GPS satellites" option & run the application, again it make an alert for location settings. I am not able to run this application. Please help me.

Can anyone tell me is it possible to run GPS based application in Android Emulator? Or not?

If it is, Is there any work around to run GPS based application in emulator?

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Android :: Create A Navigation Based App Using Droid Sdk?

Jan 4, 2010

How can I create a navigation based app using the android sdk? Not navigating as in using maps, but like how the settings app works. You click on item, and it goes to a new page of items to click.

I can't find any good samples or documentation. Yes, I've looked through the Android developers website.

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Android : Droid Handset Which CDMA Based?

Sep 11, 2009

I would like to know whether Android handsets support CDMA network also. Are there any handset which currently supports CDMA or every handset has support for that. Actually I want to retrieve the location information such as Cellid, LAC, MCC, MNC. But if the network is of CDMA type then will there be any difference in the API. Since API for fetching cellid is GsmCellLocation. This class will give the cellid and lac of the current network.

If in some cases the network is of CDMA type then how would location information be fetched in that.. Can we use TelephonyManager class methods for any kind of device? In this class there is no method which gives the LAC of the current network.

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General :: Group Texts With IPhone And Non-iPhone Users?

Oct 30, 2013

When a group message is sent between my co-workers, who are all iphone users, and myself (Note 3), one person in the exchange does not receive the text. This is not the common iMessage issue that was plaguing me when I made the switch from Apple to Android. This is specifically affecting one iphone user. When I send her a text individually it is not a problem. The other iPhone users don't have a problem receiving or sending to me.

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Android :: Use An OpenCV Rotation And Translation Vector With OpenGL ES In Droid?

Sep 14, 2010

I'm am working on a basic augmented reality application on Android. What I did so far is detect a square with opencv and then using cvFindExtrinsicCameraParams2() I calculated a rotation and translation vector. For this I used 4 object points, which are just the corners of a square around (0,0,0) and the 4 corners of the square in the image.

This yields me a pretty good rotation and translation matrix. I also calculated the rotation matrix with cvRodrigues2() since using this is easier than the rotation vector. As long as I use these to draw some points in the image everything works fine. My next step is however to pass these vectors and the matrix back to java and then use them with OpenGL to draw a square in an OpenGLView. The square should be exactly around the square in the image which is displayed behind the OpenGLView.

My problem is that I cannot find the correct way of using the rotation matrix and translation vector in OpenGL. I started of with exactly the same object points as used for the openCV functions. Then I applied the rotation matrix and translation vector in pretty much any possible way I could think of. Sadly none of these approaches produce a result which is anyway near what I hoped for. So my question is can anyone tell me how to use them correctly?

So far the "closest" results I have gotten, was when randomly multiplying the whole matrix with -1. But most of the time the squares still look mirror inverted or rotated for 180 degrees. So I guess it was just a lucky hit, but not the right approach.

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Android :: Dallas Based Droid User Group?

Nov 4, 2009

Looking for a Dallas Based Android user group... anybody now of one?

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Android :: How To Run GPS Based Application (WikiTude) In Droid SDK Emulator

Sep 25, 2009

Currently I am writing an Android application which uses WikiTude API. I installed the WikiTude browser application in the Android SDK emulator from Android Market (To get Android Market in emulator I followed this link http://forum.xda-developers.com/archive/index.php/t-529170.html).

When I run the WikiTude browser application in emulator it asks me to set location settings. I enabled "Enable GPS satellites" option & run the application, again it make an alert for location settings. I am not able to run this application. Please help me.

Can anyone tell me is it possible to run GPS based application in Android Emulator? Or not?
If it is, Is there any work around to run GPS based application in emulator?

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Android : How To Connect Motorola Droid To Windows Xp Based PC?

Feb 17, 2010

New user here. I am trying to get windows xp to recognize the sd card on my droid, is there a way to do this? Also is there any windows based software that is similar to the blackberry desktop manager? Tried to search for this answer but only found solutions for windows 7.

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Android :: What Are C Based Services And Java Based Services?

Aug 31, 2010

What are C based services and Java based services in Android? What is similarity and dissimilarity between them ? Are C based services available in Android?

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Android :: Method To Draw Bitmaps Faster On Droid Canvas / OpenGL?

Jun 15, 2010

I currently have a game written using the Android canvas. It is completely 2D, and I draw bitmaps as sprites on the canvas, and it technically works, but I have a few features that I need to add that will require drawing many more bitmaps on the screen, and there will be a lot more movement.

The app needs more power.

What is the best way to go from this method of drawing Bitmaps on a canvas to using OpenGL so I can draw them faster?

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Android :: IPhone Fanboys Try To "one Up" Fantastic EVO Bashing Iphone Video

Jun 30, 2010

ok, its the Apple Fanbois turn to try and outdo the funniest video on the web..check out their lame attempt to copy it. Code...

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Android :: Simplest Way To Compile An Autotools Based Shared C Library For Droid?

Jul 16, 2010

I have a cross-platform C library that I need to compile for Android as a *.so file. The library consist of many .c and .h files, and it use autotools as it's buid system. (./configure && make dep && make). Afaik, the library does not depend on other libraries, other than libc and OpenSSL (which should be present on Andriod).

I'm trying to find the simplest (read fastest in terms or not needing to read hundreds of pages of manuals and then apply try && fail brute-force approaches to complete the task) way of getting the library off my machine in source code form, and into the Android phones as a .so. The library will eventually be accessed from Java's native library interface. For development, I have both Windows and Debian machines on my desk.

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