Android :: Turn A Color Bmp To Grayscale?
Jul 5, 2010I've seen this code on the web...
My questions are:
1. Is 'bmp' supposed to be the color bitmap I want to affect?
2. How do I get the 0-255 value of the grayscale?
View 1 Replies
View 1 Replies
Android :: Turn A Color Drawable Into A Grayscale One (to Indicate Disabled State)?
Nov 24, 2009What would be the right way to turn a color Drawable into a grayscale one (to indicate disabled state)?
View 3 Replies View RelatedAndroid : Turn A Color Into A Resource?
Oct 1, 2009I want to change the background image of a button either into a resource drawable or a solid color.
findViewById(R.id.myView).setBackgroundResource( xyz == 0 ? R.drawable.myBackground :
instead of zero, i want some solid color...
Android : How To Customize Color / Turn To White?
Apr 10, 2010I have a ListView with the fast scroll enabled. The background of the listview is white and the text is black. The box indicating the letter of the section is being scrolled at the moment is in black. Is it possible to customize that color and turn to white? If yes, how can I do that?
View 2 Replies View RelatedAndroid :: Trying To Grayscale Bitmap?
Apr 20, 2009I am trying to grayscale bitmap as follows, But it is crashing as soon as I run this method.
The problem is in last line. How can I assign "int" to "Color"? Or are there any better ways?
CODE:................
Android :: Converting Bitmap To Grayscale
May 20, 2009I would like to convert a Bitmap to a grayscale array of bytes (one byte per pixel). At the same time I want to just crop at section from the middle. Having looked though the various api's it is not clear to me what the best way would be.
1) What is ALPHA_8? is that grayscale? I have a feeling that the grayscale effect should be done via some "saturation" on the paint object, right?
2) once I have the Bitmap in grayscale and the right size, what is the best way to get that to a byte[] of pixels (one byte per pixel)?
Android :: Convert A Bitmap To GrayScale In Droid?
Jul 30, 2010I am new to this site, and I come with a question about Android.
Is there any way to convert a Bitmap to grayscale? I know how to draw a grayscale bitmap (using canvas operations: http://www.mail-archive.com/android-developers@googlegroups.com/msg38890.html) but I really need The actual bitmap in gray colors (or at least something that could be converted to a bitmap later on).
Do I have to implement it by hand (pixel by pixel operations)?
I've searched a lot, and still could not find. Anyone knows a easy/efficient way to do it?
Android :: Want To Convert Image Captured By Camera To Grayscale?
Jul 8, 2009I have a camera application that captures a 640x480 image.I want to convert this image to grayscale.I know I have to use the setSaturatio (float sat) in the ColorMatrix method to zero but I don't know how I can set it to grayscale.
View 3 Replies View RelatedAndroid :: Apply / Convert Image From Colored To Grayscale Algorithm To Droid?
Oct 28, 2010I am trying to use one of these algorithms to convert a RGB image to grayscale :
The lightness method averages the most prominent and least prominent colors:
(max(R, G, B) + min(R, G, B)) / 2.
The average method simply averages the values: (R + G + B) / 3.
The formula for luminosity is 0.21 R + 0.71 G + 0.07 B.
But i get very weird results ! I know there are other ways to achieve this but is it possible to do this way ?
here is the code...
Accessing Grayscale Data From A Photo?
Oct 7, 2012I am wondering how do I go about writing code (or be directed to any existing relevant code), that allows me to average the grayscale values above a threshold (Otsu threshold) from a JPEG photo taken from an android device camera.
View 2 Replies View RelatedHow To Get Grayscale Pixel Data From Image Or Preview
May 8, 2013What I am needing is a method to get grayscale pixel data from an image or preview. I am not interested in saving the picture as a jpeg etc, just need the grayscale data.
I am aiming at API 10 (as this is the device available for testing).
On top of this, I am not having any luck getting the camera to work on the Eclipse emulator.
Android :: ListView With Alternate Color And On Focus Color
Jun 17, 2010I 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.
Android :: Selection Color And Text Color In Whole Project
Apr 22, 2010Is 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.
View 3 Replies View RelatedAndroid :: Use Own Color Instead Of Default Orange Color For Selection
May 23, 20091. 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.
Android :: Setting Color In Two Different Ways Color/color1
Mar 19, 2010I have seen this example:
@*android:color/secondary_text_light
What's that * asterisk doing there? What is the difference when using or not?
Android :: Customize Color Of CheckMark Color In A Dialog
Aug 16, 2010How 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
View 2 Replies View RelatedAndroid :: Color Of Text In TextView Changes Color
Feb 18, 2010In android, when I press on a TextView, the text changes color (from white to grey). how can I disable that functionality?
View 1 Replies View RelatedAndroid :: Android Default Color - Primary - Text - Light Is Color Black
May 28, 2009I 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?
Android :: Android - Color State List Resources - Specify A Background Color
Oct 17, 2010To 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?
Android : How Do I Set Color Back To "Color.BLACK" After User Releases Touchscreen
Mar 27, 2010I'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?
General :: Difference Between CM Color And Voodoo Color?
May 24, 2012The 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?
View 1 Replies View RelatedAndroid :: Android Color Picker - Updating Color Array
Oct 9, 2009I'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?
Android :: How To Pass Geopoint Location To Google Turn-by-turn Navigation?
Jul 28, 2010I am trying to pass location data from my application to the Google Navigation API (No, not the browser). I can pass data to the dialer, and call a phone number successfully, but now wish to use the turn-by-turn navigation as an additional function. I have searched tirelessly through Android documentation, Google Maps API Documentation, and the web without luck.Can anyone point me in the right direction or hint how I can pass the service my data?
View 2 Replies View RelatedAndroid :: Google Route Directions No Turn By Turn Legal & License
Jul 13, 2009Dear Android community, i've a license/legal question regarding asking Google directions to be drawn directly into the MapView. Some of you know that asking google http://maps.google.com/maps/nav will give directions in Json + a Polyline encoded form.What i would like to know is, where is the Terms of Service regarding this functionality? It is for Google internal use or not? There's also the KML which gives similar informations. Please note that it is NOT for real time driving directions but a path to be drawn from a point to another and your position NOT refreshed in real time and of course it is for an app downloadable free of charge.
View 3 Replies View RelatedAndroid :: Google Maps Custom Route With Turn By Turn Directions?
Sep 18, 2010Frustrating - but apparently the capability is I can customize a route online with Google Maps, save it to my maps and send it to the phone but it sends the static map.Ridiculously, all this power and I can't take those directions from the PC and turn them into turn by turn directions on the phone.
View 3 Replies View RelatedAndroid :: Adding Turn By Turn Directions To Google Maps
Jun 4, 2009I would really like to incorporate turn-by-turn directions to our application, but it appears to be against the TOS. Is there any way to get permission from Google to allow this for our application? I have what looks like one other app allow this interface.
View 4 Replies View RelatedAndroid :: Changing Turn-by-turn Voice In Google Navigation
Aug 2, 2010I don't know about anyone else, but I HATE the turn-by-turn directions voice in Google Navigation. I have a Moto Droid and the voice is practically unintelligible. As a die-hard Google devotee,I have faith that they will correct the problem if enough people tell them to. Surprisingly, I was not able to find this suggestion on their product suggestion forum, so I created one.
View 2 Replies View RelatedAndroid :: Turn Bluetooth On - Phone On Charge / Turn Off
Apr 16, 2010Is there an app (or any simple way of creating one) that can turn bluetooth on when phone on charge and turn it off when taken off charge.
View 3 Replies View RelatedAndroid :: Motorola Droid Will Not Get To Voice Turn By Turn
May 3, 2010My friends Motorola Droid will not get to voice turn by turn.It's stuck at searching for gps, she really would like to work for her road trip.
View 4 Replies View RelatedAndroid :: Voice Turn By Turn No Longer Works
May 19, 2010I've had my Droid for about a month and the Google Voice turn by turn naviagation has worked beautifully. Today, when I went to use it, I'm receiving directions...BUT I do not get turn by turn voice directions. The view of the map is from like an airplane, not the "over the shoulder" view like I used to get, and the voice part is totally gone (I've checked the volume and it's not that).I've tried powering the phone down/up, but doesn't help. I've called Verizon but they've told me they don't support this App.
View 1 Replies View Related