Android :: Background Image In Opengl

Apr 18, 2010

Let me know how to set up a background image in opengl. You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscribe@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en

Android :: Background image in opengl


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Android :: 2d Background Image On 3d OpenGL Game

Feb 12, 2009

I need to draw a background of 320 x 480 (fullscreen) for a OpenGL game. What I did was to stretch the texture to 512 x 512 and mapped it to 320,480 quad and then drew the rest of the game elements. I tried changing the texture image to 256x256 and no noticeable improvement in speed. Game was horribly slow even on the real device. It is actually slower on the device than on the emulator... I think i am the first one to have such a situation.. I am drawing a max of 12 triangles only 2 for background and rest are 64 x 64 textures. on 5 quad made with 10 triangles. I have disabled Depth, Lighting already. Only blending enabled as I use transparent PNG for texture of sprites. render cycle is like this - draw the background - draw the sprites (only 5) [with 10 triangles only] - swapbuffer... Please don't advice me to use 2d canvas, bitmap etc... I need to do it in OpenGL only. don't think OpenGL ES 1.0 is so incapable that it can't give me atleast 25-30 fps with just 12 triangles which you one 256x256 texture and one 64x64 textures (used by 5 quads...

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Android :: OpenGL Fading Background

Sep 14, 2010

I'm trying to create a particular effect where I have a bunch of particles on the screen which leave trails that slowly fade. I was hoping that I could simply use glClear with a small alpha value to do this but that doesn't seem to be working.My second idea was to draw a black face on the front of the screen but this doesn't seem to be giving me the right effect, the particles are faded but the background doesn't really fade. My next idea is to render to a texture and fade that texture but that's a lot of extra work and I'm not sure if it will solve my problem. Can anyone think of a way to do this? Am I missing something?I'm having trouble finding information about rendering to a texture on android. If anyone has some links to articles that would be great.

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Android :: Draw Png Image And Run Opengl

Mar 14, 2009

Is it possible to draw a png image and then to run opengl operations on it with android? Is this the right forum to ask this? where can i get more information on doing such stuff?

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Android :: Drawing An Image Using OpenGL

Aug 10, 2010

Using OpenGL ES, how do I draw an image from the resources file onto the screen? The image is in png format, if that matters.

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Android :: Project For Preview Image On Opengl Texture?

Dec 10, 2009

I'm trying to get the preview images of the android Camera onto a opengl texture. I have been successful so far, it works most of the times. Though sometimes I will just get a black screen when starting/ resuming the application. I have been debugging for days, not finding any clue. When debugging I noticed that both the camera callback and the onDrawFrame are called in such situations. the bytearray of the camera does contain data.

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Android :: Image On Background Of A Row Of A ListView

Oct 29, 2009

ListView Question! I know it's possible change the row color, but it's possible to put some imagem on background? And if yes, it's possible to create an imagem 1px and repeat-x or repeat-y like CSS?

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Android :: Set Background Image In ListView

Mar 29, 2010

I want have an image and i want to set it as a background of android list view. i have used android:background="drawable/image" but nothing happened. how to achieve this?

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Android :: Setup Image In Background

Apr 28, 2010

I am developing a live Wallpaper on android 2.1

I want to set in background a bitmap that i download on a server. I use canvas with the method setBitmap(Bitmap bitmap); but it don't work. I also try to set it in an ImageView in a different class of my live Wallpaper but it also don't work.

Have you got a solution?

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Android :: Centering A Background Image?

Oct 2, 2010

I have a background image about 100 x 100 that I want to center in an Android app. Is there a way to do this?

I'm thinking it would greatly help with orientation changes for simple apps.

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Android :: Background Image Size?

Feb 2, 2010

I have an image that I want to place on the background on my activity. For the G1 I would use a background of 320x480 but with the nexus 1 the resolution is almost double that. Should I just place the large image and make the smaller phones size down? I am trying to keep the size of my package down as much as possible.

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Android :: Set Image Background For Linearlyout ?

Nov 20, 2010

I want to set Image background for linearlyout in android ? can i ? if yes. how ?

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Android :: Animating A Background Image?

Oct 6, 2010

I have a RelativeLayout with a tiled background. Is there a way to make a tween animation to fade out the existing image and fade in a new one?

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Android :: Background Image For Wrap_content

Sep 6, 2010

I created a custom background image and wanted to use it as the background for a layout that has height of wrap_content. However, the total height of the contents of within that layout are much less than the height of the background image.

When I set it as the background in XML via android:background="@drawable/image", I noticed that it displays the entire height of the image, although the height of the actual contents are much shorter.

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Android :: Background Image Placement?

May 6, 2010

I'm trying to set my root LinearLayout element (which is set to fill_parent in both dimensions) to have a background image which is always located in the lower left corner of the screen no matter the orientation of the device. It would be excellent if there were some way to set the background image position such as that which you can do with css using "background-position: left bottom;" but I'm not seeing a way to achieve this in Android. Is there a way to do this?

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Android :: Add Padding For Background Image?

Apr 26, 2010

I have a linear layout which has a background image (a 9 patched png file). How can I add padding to left and right so that the background image does not take up the whole width? I have tried 'android:paddingLeft' and 'android:paddingRight', but that does not change anything.

CODE:.....

The whole background still stretches the whole screen width.

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Android : Add Background Image To Activity?

Jul 22, 2010

Using theme or ImageView ?

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Android :: Filling Whole Screen With Background Image

Nov 15, 2010

I am trying to fill an image onto my screen, but it is just covering around 75-80% part of whole screen, not whole screen.

The codeblock i am using is as:

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

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Android :: How To Change Background Image Dynamically?

Nov 18, 2009

we are designing the page and we need to change background image dynamically.Is there any way to load(or change) android application background image dynamically?help me from come out this problem?

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Android :: Listview Background Image Changes On Scroll?

Apr 30, 2010

I am developing an android application where I need to manipulate the background image of the rows in listview on certain conditions. Initially when the listview is loaded all works properly. But when I scroll down to the listview and come up again the background image changes. Can someone tell me the reason why its happening so? Hope to get the reply soon.

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Android :: Difference Background In Image Viewer

Jan 19, 2010

I do these actions on Android G1 2 times: open gallery -> view image -> Capture screen-shot -> Go back -> exist from gallery.

But captured screen-shots of 2 times are difference: the above and below background of image viewer of first time is lighter Grey, while second time is darker.

2 screen-shots:
First time: http://farm5.static.flickr.com/4064/4252991345_6ee5777bf5_o.png ,
Second time:[url]

I repeat again many time, and the "light Grey" and "dark Grey" background are alternate occurred.
Why backgrounds are not the same ? some Android optimization, cache, etc... Could you help me to find reason?

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Android :: How To Apply A Background To Button Into Other Image?

Sep 21, 2010

How can I change the background of an ordinary Button into some other image(not just a color change)? ->And about Nine patch bitmap, how to use them, how to create such bitmaps and how can i convert my image into a StateListDrawable, so that I can apply it as my Button background?

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Android :: How Can Avoid Background Image For An Application?

Jan 9, 2010

hi, i run my application in an emulator/device automatically one drawable image other than default image i used my image coming for my application as background.how can avoid it?

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Android :: Set Image / Background Source Dynamically

Oct 11, 2010

Is there any possibility to set background image dynamically? I try to explain what I mean.

String picVariable = getPictureFromServer();
ImageView image = (ImageView)v.findViewById(R.id.dynamic_image);
// I know, that doesn't work, but that's the way I looking for
image.setBackgroundResource(picVariable);

I also read this article. It would suggested in one answer, to use java reflection to get a field of the R class by name. But I've never used reflextion before.

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Android :: Created Button And Set Background Image

Jul 15, 2010

I created a button and set the background image on it.How can I set the text below the graphic to sit on the bottom but not on top of the graphic?

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Android :: ListView With TextView With Background Image

Nov 12, 2010

I have a ListView with a lot of "rows". In each row, i have one TextView with a background image. When i scroll, the images of the rows mixes... they jump to another row with the scroll.

In have tried android: scrollingCache="false" and android:cacheColorHint="#00000000" but nothing.

The images are loaded dinamically.

Part of my layout:

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

And part of my code:

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

"avatars" is a cache of Drawables. any idea?

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Android :: Set A Background Image For Each Item Of ListView

Feb 16, 2010

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

This is my current row. If I created a .JPEG, and I want that to be for each item...how would I change this .xml file? Where would I put the image? In Assets?

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Android :: Have A Centered Background Image In View?

Jun 12, 2010

I'd like to use a small (icon size) image as the background for my view, but it gets stretched to fill all the view. code...

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Android :: Scale A Drawable Or Background Image?

Sep 9, 2009

On a layout I want to scale the background image (keeping its aspect ratio) to the space allocated when the page gets created. I am using layout.setBackgroundDrawable() and am using a BitmapDrawable to setGravity for clipping and filling, but don't see any option for scaling.

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Android :: Moving Background Image For Game

Nov 11, 2010

I'm currently developing an Android game where the user controls a plane and evades obstacles. I'm using simple draw commands into a Canvas.

I want to know what is the best way to move a background image to give a sense of speed to the game. Is there a way to make the background- image repeat endlessly or should I load the image twice and move them one behind the other one. Can anyone guide me on this one?

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