Android studio rgb wheel

Handy, lexible and lightning-fast material color picking UI components for Android.

Features

Clean, easy-to-use components and API
High performance
Material styling in mind
Standard Android SDK view family
Wide color models support
Tooling and utilities
Alpha channel support
Cutting edge tech stack
Active development and support

Yet another Color Picker Library for Android. It is highly customizable and easy to use. Pick the color from wheel or select Material Colors from dialog.

Features

Color Picker View
Color Picker Dialog with Recent Color Option
Material Color Picker Alert Dialog
Material Color Picker BottomSheet Dialog

Dark Theme is an experimental project, with the aim of showing the combination of colours from light to dark theme .

There’s a colour picker to apply a theme colour in the entire app as a Dark/Light button to recreate the app with both theme modes.

ColorWheel is a library for Android which provides HSV Color Wheel and Linear Gradient Seek Bar views that can be used to pick an ARGB color.

A color picker seekbar for android.

A ColorPicker for Android. Pick a color using color wheel and slider (HSV & alpha).

For color lovers! A simple but powerful Android color picker.

Features:

Dynamic color preview;
Change the color through Alpha, Red, Green, and Blue sliders;
Clearable recent colors;
Material palettes (>200 colors!);
ColorBox preference;
Easy to implement;

You can get colors from your gallery pictures or custom images just using touch with multi-selectors.

Android Color picker is a custom image or drawable color picker. It is very easy to use and customize. It tracks the color changes continuously on moving picker and also tracks color changes on tap of color picker.

An arc based android color picker library.

AndroidClearChroma is a completely customisable material color picker view for Android.

It perfectly handles preferences with a possible customization of preview shapes.

Fork from VintageChroma, it solves many bugs and adds transparency display, fragments management and listeners for each color channel.

An android library to pick colors from any image loaded in an ImageView or anything drawn on a Custom View.

A simple, minimalistic and beautiful dialog color picker for Android 4.1+ devices. This color picker is easy-to-use and easy-to-integrate in your application to let users of your app choose color in a simple way.

Features:

Get Hex and (A)RGB color codes
Set color using (A)RGB values and get HEX codes
Set color using HEX value
Separate UI for portrait and landscape devices
Support for pre-lollipop devices

ColorPickerDialog is an Android Library providing color picker dialog for single color or multi color selection from the ArrayList of colors provided by developer.

The most standard and powerful colorpicker library.

A highly customizable color picker for Android.

A custom preference item for easy implementation of a color picker in the preference screen. You can use the inbuilt picker or any other color picker of your choice.

Vertical slide color picker for Android.

Shade Melange is a library that contains a colour palette with a wide range of pre-defined colours with their names. The implementation of the grid has been done using RecyclerView for memory efficient performance.

Источник

Tek Eye

User Interface (UI) design is an important part of an app. Color (or colour in British English) is an important part of a UI. A color picker can be used to customize or edit an app theme or UI. Plus they can be used for artistic apps. This tutorial provides an Android Color Picker example app, but not just showing one way. Two ways are provided in this article and lots of color pickers are available around the web.

(This Android color picker tutorial assumes that Android Studio is installed, a basic App can be created and run, and the code in this article can be correctly copied into Android Studio. The example code can be changed to meet your own requirements. When entering code in Studio add import statements when prompted by pressing Alt-Enter.)

How is an Android Color Defined?

What is a color in the Android Operating System (OS)? A color in Android is simply a number, a 32-bit number. 32-bits fits into a Java int. Therefore a standard color in Android is stored in an int. The 32-bits of the color int are divided into four lots of eight bits (four bytes). The four bytes are the Alpha (transparancy), Red, Green and Blue parts of a color. A color is therefore often simply referred to as an RGB or ARGB value. Each byte can hold 256 values (0-255). Therefore, the total number of possible colors are 256x256x256=16777216. Over 16 million colours and at 256 transparency levels. To define a color just assign a value to an integer, here is an example:

A Simple Android Color Picker Example

Because an Android color is just a combination of four bytes a simple color picker can be made with four Seekbars dropped on to a View. Then take the value from the Seekbars and convert them into a color using the Android Color class.

For an example on using the Seekbar see the Tek Eye article SeekBar Android Example Code and Tutorial. Here is the layout with four Seekbars used to set an Android color (as shown above):

Here is the Java Activity source code (MainActivity.java) used for the above layout:

An Android Color Picker Dialog

The Android Software Development Kit (SDK) used to ship with many demo apps. One of the most useful was the API Demos project. The API Demos covers many core Android classes. It features graphics examples and one of those has a color picker dialog.

To implement it copy ColorPickerDialog.java from the graphics folder of the API Demos project into the same folder as the main Java file (here MainActivity.java). Change the package namespace to match the app’s (here package com.example.colorpicker; ). Add a Button to the top of the layout and set the first TextView to be below it:

Add code to handle the button and invoke the ColorPickerDialog:

And code to handle the color picker dialog return:

The ColorPickerDialog is showing its age as it has hard coded values for when screens were much smaller. Here some simple scaling was added based on density pixels (dp) and the values tweeked. It’ll need further changes to correctly handle different screen sizes if it goes into production code. Here is the code for the ColorPickerDialog.java used in the example:

Lots of Color Pickers

There are lots of free color pickers available for Android. Many with more features than the ones shown here. Browse for an Android color picker on GitHub to find one suitable for your project, if the simple ones shown here are not up to the job.

Good UI Design

Color is only one small part of UI design. A good UI makes an App more pleasurable to use and engaging.

You can learn all about UI design at the Interaction Design Foundation. Head over to their UI design resource, it includes tips on how to make a great UI, at: https://www.interaction-design.org/literature/topics/ui-design

Использование библиотеки ColorPicker в Android для реализации гибкого выбора цвета

Понадобилось реализовать выбор цвета пользователем для вашего Android-приложения? Эта библиотека — отличный выбор.Без долгих предисловий, начнем.

Как всегда, для начала добавим библиотеку в приложение (файл build.gradle(module.app) ):

С этим разобрались. Теперь приступим непосредственно к реализации выбора цвета.

Создадим разметку:

У нас есть 2 кнопки, по нажатию на которые будет открываться диалоговое окно для выбора цвета. Когда мы выбрали цвет, он будет меняться у двух наших TextView.

Добавим наши поля в MainActivity:

… и инициализируем их в onCreate():

ВАЖНО: Также необходимо, чтобы MainActivity реализовывала методы интерфейса ColorPickerDialogListener:

Теперь создадим метод для создания диалогового окна и указаный в XML-разметке метод onClick:

все атрибуты класса ColorPickerDialog

Также необходимо реализовать методы интерфейса ColorPickerDialogListener:

Запускаем и… готово!

Однако это ещё не все возможности библиотеки ColorPicker. Она также добавляет preference для PreferenceScreen. Это позволяет реализовать выбор цвета в настройках. Посмотрим, как это работает.

1) Создадим новую SettingsActivity:

2) Откроем файл root_preferences.xml и изменим его следующим образом:

Как видите, мы создали Preference типа ColorPreferenceCompat

3) Создадим в activity_main.xml кнопку для перехода в нашу SettingsActivty:

4) Создадим метод openSettingsActivity в MainActivity и укажем его в поле «onClick» этой кнопки:

В этой же MainActivity создадим метод, который изменяет её фон в зависимости от выбранного в настройках цвета и вызовем этот метож в onCreate:

Переопределим метод onResume (подробнее тут):

5) Запустим приложение и посмотрим, что получилось:

Источник

Top 10: Best Android Color Picker Libraries

Carlos Delgado

See our review from 10 of the Best Android Color Picker Libraries.

A color tool, color picker, or color chooser in an application, is a utility that is usually but not necessarily found within graphics apps. They’re used to choose colors or create color schemes. Normally, they allow you to choose a color in its RGB-A, HEX, or HSL-A representation. If you are willing to implement such a feature in your Android Native application, you already know that there are a lot of libraries that allow you to implement this widget in case that you are working on software to colorize photos.

In this top, we’ll share with you 10 of the most imponent libraries to build color pickers in your native android application.

10. ColorSheet

ColorSheet is a color picker fragment from the bottom sheet.

9. Pikolo

Pikolo is an android color picker library. It works as a widget inside your application, so add the HSLColorPicker view to your layout and use it in code as below:

8. ColorPicker by Duanhong

This library allows you to display a ColorPicker for Android. Pick a color using color wheel and slider (HSV & alpha). It can be initialized like this:

7. hsv-alpha ColorPicker android

This library implements a color picker and a color preference for use in Android applications. This plugins features:

Alpha slider.
Text field to copy and paste hex color values.
Old and new colors displayed side by side.
Optional selection of «no color».
Proper behavior when orientation changes.
Up-to-date design.

In addition, the Hue-Saturation picker.

gives higher hue precision than a square picker of the same size.
allows easier selection of pure white than a circular picker.

6. AndroidPhotoshopColorPicker

This plugins allows you to implement a full featured Color picker Library for Android! Just like the one in Photoshop! It features:

Hue bar — Adjust hue using a slider
Saturation & Value Box — Select the color from the Saturation & Value Box (like in Photoshop)
Alpha bar — Adjust the alpha using a slider
Preview — You can see the current selected and previously picked colors side-by-side
Edit each component individually — You can edit Hue, Saturation, Value, Red, Green and Blue components individually
Fully customizable — By default, there are two themes(Light and Dark). But you can define your own theme to customize the whole ColorPicker
Easy to use — All the hardwork is done by us. Just a few lines of code is all you have to do

5. Skydoves ColorPickerPreference

A library that lets you implement ColorPickerView, ColorPickerDialog, ColorPickerPreference. Could get HSV color, RGB values, Html color code from your gallery pictures or custom images just by touching.

4. Android Colorpicker Preference

ColorPickerPreference is a library for android to create color picker in preferences. This template features:

Color Area
Hue Slider
Alpha Slider (disabled by default)
Old & New Color
Color Preview in Preferences List

3. Holopicker

Holopicker is an Android Holo themed colorpicker designed by Marie Schweiz. You can now set the Saturation and Value of a color. Also its possible to set the Opacity for a color. You can also set the last selected color and see the difference with the new selected color.

2. ColorPickerView

ColorPickerView is the most standard and powerful colorpicker library. ColorPickerView implements getting HSV colors, ARGB values, Hex color codes from any image drawables or your gallery pictures by tapping on the desired color. Supports alpha & brightness slider bar, dialog, and auto saving & restoring selected data. ColorPickerDialog can be used just like using AlertDialog and provides colors from any drawables. ColorPickerDialog extends AlertDialog . So we can customize themes also. A new dialog that allows you to pick a color can be initialized with the following code:

1. QuadFlask Colorpicker

The colorpicker library by QuadFlask is a pretty simple android color picker with color wheel and lightness bar. The library is not released in Maven Central, but instead you can use JitPack. It can be used easily as a dialog with the following code:

Honorable mentions

Colorpicker

Colorpicker is a simple Android color picker library.

If you know another open source color picker component for Android applications, please share it with the community in the comment box.

Carlos Delgado

Interested in programming since he was 14 years old, Carlos is a self-taught programmer and founder and author of most of the articles at Our Code World.

Источник

Android studio rgb wheel