Android :: Enable 24bit Color Depth In The Emulator
Jul 6, 2009
Currently, I am targetting the emulator to make Android application which is targetted for an Android device which includes 5" 24bit display. Only currently android emulator (or android in general) only appears to support 16bit. Meaning we are experiencing dithering issues why it isn't really necessary. Now my question can I somehow recompile Android 1.5 emulator image so it's using 24bit instead?
Or is this impossible without a lot of changes? Currently, I am predithering the images but no fun ;)
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May 19, 2009
Dear Sir, As I know, Android only supports RGB 16-bit color depth format. Could Android play 24-bit color RGB format video and REALLY see 24-bit color now? If it is not, will it be supported by Android Donut in the future?
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Jul 4, 2010
I just received my HTC Desire on Orange, rooted and de-branded it. Works fine now, I'm on SW version 1.15 as otherwise, I get issues on Orange.
However, the color depth on my device is very poor, it looks like it only has 256 colours if that makes any sense? A bit like on the old PCs when you rebooted and your display graphics drivers weren't properly installed.
Is there any way I can reinstall display drivers on Android? I hope this isn't a hardware issue.
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Aug 18, 2009
About the color depth on the Samsung Galaxy.
While it is advertised as having a 16 Million color display (24bpp) it is only running at 16bpp: $ cat /sys/devices/virtual/graphics/fb0/bits_per_pixel 16
Some say that it is a restriction of Android 1.5 itself which was only capable of supporting up to 16bpp screens. Android would be down sampling to 16bpp whatever the screen supports.
I've searched the available documentation over and over and can't find anything like that.
As I see it Android 1.5 would indeed be capable of displaying 24bpp images properly given that the screen is capable of and configured to do so.
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Aug 13, 2010
how to enable sound in android emulator .i am using fedora 13 .
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Sep 22, 2009
According to the emulator docs, you should be able to enable/disable networking with the F8 key. I doesn't work for me and I'm trying to determine why.
I'm developing on OSX Leopard. I've also tried in a virtual Windows instance (Windows 2008 server running in Parallels). No luck in either case.
I've tried the obvious stuff like fn + F8, etc.
Should there be any sort of visual cue that networking has gone online or offline when F8 is pressed?
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Apr 13, 2009
I managed to handle a full size image (2048x1536) (moving around, zooming, some colorfilters, etc). However, i can only load these images in memory as RGB_565, one at a time. I try to free as much bitmap memory as possible (by recycling every possible bitmap cached/ open in my app), and then load the full-sized image in RGB_565 format. This works well.
The user can make some modifications (color balance, brightness, etc) and I like to save the resulting image in a JPEG file. However, on screen, all edits are shown in RGB_565. You can see the posterization because of the reduced pixel-depth. The quality degradation on the screen is a minor problem. My main problem is to apply these edits to the actual and higher quality ARGB_8888 data of the original JPEG file.
Trying to load a ARGB_8888 JPEG file with size 2048x1536 is not possible. I get an out-of-memory error. Is there any way to apply color-filters to ARGB_8888 data (instead of RGB_565) so that i won't lose a lot of image-quality when trying to save modifications into a JPEG file?
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Nov 29, 2009
The Game Boy Color was one of my favorite handheld game systems and my favorite video game ever, Super Mario Bros. Deluxe, was on this system. However, I was a bit surprised to see that there was only one GBC emulator on the Market, which was paid and didn't have good reviews. Does anyone know if there is a better GBC emulator being developed or if there is someone on this forum who loved the GBC, maybe you could make one(because I have no coding skills whatsoever)
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Aug 18, 2010
I am looking for a gameboy color emulator, i did have GBCoid lite but the game i want to save wont save using that one!
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Jun 9, 2010
I'm working on a Push Notifications library for Android (http://deaconproject.org/) that needs to take action if network connectivity is interrupted or changed - namely, it needs to re-initiate a server connection or pause its operation until network connectivity is available. This seems to work fine using and Android BroadcastReceiver for "android.net.ConnectivityManager.CONNECTIVITY_ACTION".
My problem is in testing the library - I would like to automatically test the library's response to a broken network connection, or a transition from 3G to WiFi, under various configuration conditions. The problem is, I don't want to sit with the emulator and hit F8 all day.
Is there a way to programmatically manipulate network connections on Android from within a jUnit test without resorting to toggling Airplane Mode? I've already tried issuing commands to the emulator via the console, manipulating the GSM mode, etc, but while the phone state changes on the display, the Internet connection remains up.
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Sep 22, 2010
I run a small blogging site named Hot Off The Tech, You can check out the blog in my signature.
I recently wrote up a comparison on the various Android UI's. What Is The Best Android UI?
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Oct 6, 2010
I am a beginner in writing Android apps and would like to be a part of the group to get a more in depth understanding.
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Aug 20, 2009
Is it necessary to limit how deep the activity stack can become within an application?I'm implementing a browser-type app. Every time the user clicks a link, I could launch a new PageView activity, but then the activity stack might become very deep. Alternatively I could have a single PageView activity that changes its content when a link is clicked, maintains an internal history and overrides the BACK button.Is there anything performance-wise to choose between these two designs? Is it OK to let the activity stack become arbitrarily deep?
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Apr 29, 2010
I'm currently learning OpenGL ES programming on Android (2.1). I started with the obligatory rotating cube. It's rotating fine but I can't get the depth buffer to work. The polygons are always displayed in the order the GL commands render them. I do this during initialization of GL:
CODE:...........
On surface-change I do this:
CODE:............
When I enable backface culling then everything looks correct. But backface culling is only a speed-optimization so it should also work with only the depth buffer or not? So what is missing here?
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Dec 29, 2009
My name is Moondog and "I'm a tehno-phobic Moto Droid newbie"..Although the Droid is pretty easy on the basic stuff, I am sure that there is lots more I could do with the phone.I've read the online manual, but it doesn't get into much detail.Does anybody know where I could find more in-depth instructions?
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Jun 17, 2010
I need to set alternate color in list view rows but when i do that it removes/ disables the on focus default yellow background
I tried with backgroundColor
rowView.setBackgroundColor(SOME COLOR);
also with backgrounddrwable.
CODE:.........
But it wont work. is there any way we can set background color and on focus color simultaneously which will work.
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Apr 22, 2010
Is there any process to change the default text color white to "Black" and default selection color of android "orange" to "Blue" for whole project. i am using Eclipse for Android development.
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May 23, 2009
1. I want to use my own color for selecting ui views.
By default, android shows the selected view with background as orange. I want to show the view background color as red.
2. In the same way, I want the same behaviour should be applied to whole application.
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Mar 19, 2010
I have seen this example:
@*android:color/secondary_text_light
What's that * asterisk doing there? What is the difference when using or not?
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Aug 16, 2010
How to customize the color of the CheckMark color in android in a dialog. Currently , By default, the color of the checkmark is green by default. I would like to customize it to a different color of choice
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Feb 18, 2010
In android, when I press on a TextView, the text changes color (from white to grey). how can I disable that functionality?
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May 28, 2009
I got a little textview defined in layout xml:
CODE:.........
As you can see the background color is "background_light" (this results in white color) and the text color is "primary_text_light" (this results in black color).
I would have thought that primary_text_light would result in a "light" color like white, not black ;-)
When i change "primary_text_light" into "primary_text_dark" the text color becomes color white.
Is this a bug in the naming of the default colors?
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Oct 17, 2010
To give the user of my app an indication which field currently has the focus I am trying to change the background color of some of my fields depending on the current state, however, I am having troubles understanding Androids Color State List Resources:
There is this example at the bottom of http://developer.android.com/guide/topics/resources/color-list-resource.html. If I try exactly the same, i.e. if I want to adapt the textColor , things do work. However, if I try an only slightly different thing, namely to adapt the background color, things do not work and I don't understand why? Why is this so inconsistent?
To make it simpler to understand what I am trying to do, I append my misc. .xml files:
The AndroidManifest.xml file:
CODE:.........
If I run this as shown here, it works, i.e. I get a button whose text color changes depending on whether the button is focuses, pressed, etc.
If I uncomment the lower button, where I just flipped the attribute values for textColor and background I get an exception, stating
... <item> tag requires a 'drawable' attribute or child tag defining a drawable
What the heck am I missing here? Why is that color state list acceptable as a text color but not as a background color? How does one specify a view's background color depending on the view's state?
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Mar 25, 2010
I'd love to load this new leak, and currently have it downloaded and on the SD card waiting to go. However, I REALLY don't feel like reloading everything and repositioning all my icons and redownloading stuff. So, my question is this: how "in depth" can a back up get? For instance, I have the game "Replica Island" that I've played probably 30 or so levels, I'd hate to lose all that stored information too. Can a back actually just do a complete restore after loading an OS?
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Mar 27, 2010
I'm programming my first Android application and I've stumbled over a little problem.
I've created my own adapter ("extends BaseAdapter") for my ListView and in my "public View getView(...)" I have the following code:
My problem: How do I set the color back to "Color.BLACK" after the user releases the touchscreen?
I'm looking for something that is similar to Javascripts "onMouseUp" or "onKeyUp" methods. An OnClickReleaseListener() perhaps?
Can you point me in the right direction?
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May 24, 2012
The SubZero kernel has two versions, one with CM Color and one with Voodoo color. I can't find much information about CM Color. What the difference is?
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Oct 9, 2009
I'm trying to create a color picker for Android that looks like a minimalistic version of Gimp's. So, it has a hue slider and a rectangle with saturation/value variants of a color chosen in hue slider.
Question: what is the best way to create the rectangle?
Right now, I'm creating an 200x200 array of pixels, but it takes ~5sec to create and display rectangle with that array. And I need colors in rectangle to change whenever I change the value in hue slider...
Rectangle is bitmap, Can I use color matrices on that and how?
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Aug 6, 2010
I created a sqlite database to store playlists for a media player I am developing because of extended feature (rather than using the Content Provider). It works perfectly on the 1.6 emulator but FCs on anything higher than 2.0... what has changed that I need to know about as far as opening databases in SDK 2.0+? Here is the logcat.
CODE:.............
Here is the dbhelper class
CODE:................
why can't stackoverflow just use tags like a normal syntax highlighter.
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May 19, 2009
Unable to play youtube videos on SDK 1.5 emulator - but playing well on SDK 1.0 emulator. Can you update the source....
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Apr 13, 2010
Finally strace gave me this:
CODE:................
And several other attempts to call "link" that also fail (sshfs does not support hard links).
Is it possible to change the emulator's behavior to create lock files somewhere in /tmp (using some hash of image path as lock file name)? I am OK to try this myself: which repositories from https://android.git.kernel.org/ are necessary to rebuild the emulator alone, and where in the sources is the code responsible for image locks?
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