color-codes | 易学教程

How can I convert an RGB input into a decimal color code?

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问题 Say I have an rgb color code with values 255 for red, 255 for green and 0 for blue. How can I get the decimal color code from those numbers, using only mathematical operations? So my setup, in pseudo-code, would look like: int r = 255; int g = 255; int b = 0; int result = /*decimal color code for yellow*/ Please help, I have spent ages trying to find an answer already and would love a simple quick answer :) 回答1: int result = (r * 256 * 256) + (g * 256) + b Or, if your language has a bit shift

How can I convert an RGB input into a decimal color code?

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Is there any shortcut on Android Studio to get the HEX value of color from text or something like this?

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问题 I don't want to remember the color codes during coding. Is there is any shortcut to get the color codes from the color name or anything else to get the color code on Android Studio ? 回答1: You can use a colors.xml where you store your colors. Then you can access them later in xml as @color/myGreen . Here is a example xml: <?xml version="1.0" encoding="utf-8"?> <resources> <color name="my_green">#00cc00</color> </resources> If you need the color again as int you can use this code: int color =

Getting Html color codes with a JColorChooser

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问题 Is there a way to get the html color code from a JColorChooser My java Applet takes three colors from the user and averages them and displays the color I want to get the html color code after they look at the average color how can I do that 回答1: Write a method to convert a Color to a String . An HTML color code is just the R, G, and B values converted to hex and displayed as a string with a pound sign in front. This is a fairly simple method to write. public static String toHexString(Color c)

How to make any html color code semi transparent [Android]

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问题 I have one Android application were i have one shape and in that i have one solid tag. I want to make this shape 20% transparent with above color code. How should i do that? 回答1: If the color is represented in hexadecimal, like #424242, then adding two more digits in front of this "number" will represent the transparency, ex: #66424242. (66 in this example) You can play a bit until arrive at desired effect. 回答2: android:color="#66FF0000" is partially transparent red and if you decreasing the

ggplot: colour points by groups based on user defined colours

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问题 I am trying to define the colours of groups of points plotted in ggplot. I adapted code from this post: Color ggplot points based on defined color codes but as soon as I have more than one row defined by the same grouping variable (rather than a separate colour for each row), the code fails, and I can't figure out why. Below is a reproducible example: #create some data zone <- c("E","E","C","C","C","E","E") #grouping variable col <- c(50,100,150,200,250,300,350) #x variable D <- c(.4,.45,.20,

How to convert android color format?

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问题 I have a colorpicker dialog, where you can choose colors for a button, textcolor etc. If I log the choosen color, I get a -13459125 number which I dont know what RGB color is. I see that it's a 24-bit color code because 256*256*256 color can be selected, but how can I convert it to a format where I can define its RGB codes? I am not sure why it is negative either... 回答1: Its packed 4-bytes to an integer as 0xAARRGGBB Your value (-13459125), is 0xFF32A14B, or A=255 R=50 G=161 B=75 in decimal.

Holo light color code of Navigation drawer

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问题 What is the hex color code of the background of the view you draw out in the navigation drawer in the image (the left one) below? I found https://github.com/android/platform_frameworks_base/blob/master/core/res/res/values/colors.xml but cant seem to find the correct color. 回答1: Based on the screenshot, the background of the Option 1 element is #e7e8e9. 来源： https://stackoverflow.com/questions/17031727/holo-light-color-code-of-navigation-drawer

How can I turn off color codes when running Play commands?

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问题 When I run Play commands, the logs come out nicely colored and clean in the terminal, but when I build my application in Jenkins, the logs there show the color codes, rending them amazingly hard to read. Command-line logs: [info] ApplicationSpec [info] Application should [info] + send 404 on a bad request [info] x render the index page [error] '401' is not equal to '200' (ApplicationSpec.scala:25) [info] Total for specification ApplicationSpec [info] Finished in 134 ms [info] 2 examples, 1

How to make any html color code semi transparent [Android]

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I have one Android application were i have one shape and in that i have one solid tag. I want to make this shape 20% transparent with above color code. How should i do that? If the color is represented in hexadecimal, like #424242, then adding two more digits in front of this "number" will represent the transparency, ex: #66424242. (66 in this example) You can play a bit until arrive at desired effect. android:color="#66FF0000" is partially transparent red and if you decreasing the value of 6 as 5,4,3 up to 1 as "#56FF0000" ,"#46FF0000","#36FF0000","#26FF0000", the transparent color will