Android Studio设置颜色拾色器工具Color Picker教程

傅明知

2023-03-14

本文向大家介绍Android Studio设置颜色拾色器工具Color Picker教程，包括了Android Studio设置颜色拾色器工具Color Picker教程的使用技巧和注意事项，需要的朋友参考一下

你可能下载过一些获取颜色值的一些小工具，

这种方式获取颜色，需要先切换窗口转跳到桌面，然后打开拾色器小工具程序，然后去拾取颜色；

你可能也知道Android Studio自带一个颜色拾色器，通过下面这种方式才能找到

这种方式获取颜色值限制性很强，需要特定的窗口，需要点击那么一小块颜色才能弹出窗口，才能使用

那有没有更好的方式？答案是肯定的，不然这些个干嘛~~

不用向上面那样去打开拾色器小工具程序，不用在特定的窗口点击特定的位置弹出拾色器工具，是用我们最喜欢的快捷键的方式打开

Android Studio自带了颜色拾色器工具，但是它没有设置快捷键，也没有告诉我们，这才是问题，

不罗嗦了，跟着下面的设置去设置快捷键吧

设置好之后Apply应用 + OK确认下就好了

下面就能愉快的玩耍了，Alt+C~~

补充知识：Android 自定义一个简版的取色器ColorPicker

最近在一个项目中要用到修改颜色功能，于是搜索了一波android自定义取色器，虽然搜索结果很多，但是都不是令人十分满意（可能是用久了AndroidStudio自带取色器的原因，真的是太好用了有没有？）。

既然这么喜欢AS的调色板，何不自己撸一个？心动不如行动，马上动手！

常规操作，先上效果图，简版取色器效果如下：

项目地址：

https://github.com/shixiuwen/colorpicker

布局单位使用的是dp，没有做其他过多适配操作，程序的源码很简单，可以直接clone下来修改成自己想要的效果或者做其他定制操作，直接使用的话，集成参考如下：

Step 1. Add the JitPack repository to your build file

//在根 build.gradle 中添加
allprojects {
 repositories {
 ...
 maven { url 'https://jitpack.io' }
 }
 }

Step 2. Add the dependency

//在模块 build.gradle 中添加
dependencies {
 //v1.0.3是版本号，博客不会经常更新，最新版本见github
   implementation 'com.github.shixiuwen:colorpicker:v1.0.3'
 }

调用示例：

// .xml文件中
<com.shixia.colorpickerview.ColorPickerView
  android:id="@+id/cpv_color"
  android:layout_width="match_parent"
  android:layout_height="wrap_content" />

// Activity中
final TextView tvTest = findViewById(R.id.tv_test);
ColorPickerView colorPicker = findViewById(R.id.cpv_color_picker);
//对控件进行回调监听，获取颜色值color
colorPicker.setOnColorChangeListener(new OnColorChangeListener() {
 @Override
 public void colorChanged(int color) {
 tvTest.setBackgroundColor(color);
 }
});

该控件的颜色变化过程是通过观察AndroidStudio取色板颜色变化规律而得到的，因为项目没有其他要求，所以目前没有提供其他公开方法可以供外部调用，有这方面需求的可以自己把库下载下来自动修改，有修改困难的可以邮件联系。另外，如果后面该库会收到几个start的话会考虑加一些其他功能，比如布局适配、颜色初始化功能、常用颜色记录功能…… 等等。

以下是关键类代码：

package com.shixia.colorpickerview;

import android.content.Context;
import android.graphics.Color;
import android.graphics.drawable.GradientDrawable;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;

public class ColorPickerView extends LinearLayout {

 private final View llColorProgress;
 private final View vColorBar;
 private final View rlTransBar;
 private final View vTransBar;
 private final RelativeLayout.LayoutParams transBarLayoutParams;
 private int red = 255, green = 0, blue = 0;
 private int index = 0;
 private ColorPreviewView cpvColorPreview;
 private View vLocation;
 private View vBgColor;
 private final RelativeLayout.LayoutParams colorBarLayoutParams;

 private int transValue = 255; //透明度
 private final ImageView vTransPreview;

 private OnColorChangeListener onColorChangeListener;
 private RelativeLayout.LayoutParams vLocationLayoutParams;

 public ColorPickerView(Context context, AttributeSet attrs) {
  super(context, attrs);
  View view = LayoutInflater.from(context).inflate(R.layout.view_color_picker, this);
  vBgColor = view.findViewById(R.id.fl_color);
  vLocation = view.findViewById(R.id.view_location);
  vLocationLayoutParams = (RelativeLayout.LayoutParams) vLocation.getLayoutParams();

  llColorProgress = findViewById(R.id.ll_color_progress);
  cpvColorPreview = view.findViewById(R.id.cpv_color_preview);
  vColorBar = view.findViewById(R.id.view_color_bar);
  colorBarLayoutParams = (RelativeLayout.LayoutParams) vColorBar.getLayoutParams();

  rlTransBar = view.findViewById(R.id.rl_trans_bar);
  vTransBar = view.findViewById(R.id.view_trans_bar);
  transBarLayoutParams = (RelativeLayout.LayoutParams) vTransBar.getLayoutParams();

  vTransPreview = view.findViewById(R.id.view_trans_preview);

  /*调整颜色*/
  llColorProgress.setOnTouchListener(new OnTouchListener() {
   @Override
   public boolean onTouch(View v, MotionEvent event) {
    int action = event.getAction();
    int width = llColorProgress.getWidth();
    switch (action) {
     case MotionEvent.ACTION_DOWN:
      break;
     case MotionEvent.ACTION_MOVE:
      break;
     case MotionEvent.ACTION_UP:
      break;
    }
    float leftMargin = event.getX();
    float x = 0;
    if (leftMargin < vColorBar.getWidth() / 2) {
     colorBarLayoutParams.leftMargin = 0;
    } else if (leftMargin > width - vColorBar.getWidth() / 2) {
     x = 100;
     colorBarLayoutParams.leftMargin = width - vColorBar.getWidth();
    } else {
     x = event.getX() / width * 100;
     colorBarLayoutParams.leftMargin = (int) (leftMargin - vColorBar.getWidth() / 2);
    }
    vColorBar.setLayoutParams(colorBarLayoutParams);
    onProgressChanged((int) x);
    return true;
   }
  });

  /*调整透明度*/
  rlTransBar.setOnTouchListener(new OnTouchListener() {
   @Override
   public boolean onTouch(View v, MotionEvent event) {
    int action = event.getAction();
    int width = rlTransBar.getWidth();
    switch (action) {
     case MotionEvent.ACTION_DOWN:
      break;
     case MotionEvent.ACTION_MOVE:
      break;
     case MotionEvent.ACTION_UP:
      break;
    }
    float leftMargin = event.getX();
    float x = 0;
    if (leftMargin < vTransBar.getWidth() / 2) {
     transBarLayoutParams.leftMargin = 0;
    } else if (leftMargin > width - vTransBar.getWidth() / 2) {
     x = 100;
     transBarLayoutParams.leftMargin = width - vTransBar.getWidth();
    } else {
     x = event.getX() / width * 100;
     transBarLayoutParams.leftMargin = (int) (leftMargin - vTransBar.getWidth() / 2);
    }
    vTransBar.setLayoutParams(transBarLayoutParams);
    changeTransparency((int) x);
    return true;
   }
  });

  /*调整颜色明暗*/
  vBgColor.setOnTouchListener(new OnTouchListener() {
   @Override
   public boolean onTouch(View v, MotionEvent event) {
    int width = vBgColor.getWidth();
    int height = vBgColor.getHeight();
    int action = event.getAction();
    int leftMargin;
    int topMargin;
    switch (action) {
     case MotionEvent.ACTION_DOWN:
      break;
     case MotionEvent.ACTION_MOVE:
      //防止越界处理
      if (event.getX() > width - vLocation.getWidth() / 2F) {
       leftMargin = width - vLocation.getWidth();
      } else if (event.getX() < vLocation.getWidth() / 2F) {
       leftMargin = 0;
      } else {
       leftMargin = (int) (event.getX() - vLocation.getWidth() / 2F);
      }
      if (event.getY() > height - vLocation.getHeight() / 2F) {
       topMargin = height - vLocation.getHeight();
      } else if (event.getY() <= vLocation.getHeight() / 2F) {
       topMargin = 0;
      } else {
       topMargin = (int) (event.getY() - vLocation.getHeight() / 2F);
      }
      vLocationLayoutParams.leftMargin = leftMargin;
      vLocationLayoutParams.topMargin = topMargin;
      vLocation.setLayoutParams(vLocationLayoutParams);
      changeColor();
      break;
     case MotionEvent.ACTION_UP:
      break;
    }
    return true;
   }
  });
 }


 /**
  * 颜色值调整
  *
  * @param progressColor
  */
 private void onProgressChanged(int progressColor) {
  red = 0;
  green = 0;
  blue = 0;
  index = (int) (progressColor / (100 / 6F));
  float v = progressColor % (100 / 6F) / (100 / 6F);
  switch (index) {
   case 0: //红<-->中--绿
    red = 255;
    green = (int) (255 * v);
    break;
   case 1://红--中<-->绿
    red = (int) (255 * (1 - v));
    green = 255;
    break;
   case 2: //绿<-->中--蓝
    green = 255;
    blue = (int) (255 * v);
    break;
   case 3://绿--中<-->蓝
    green = (int) (255 * (1 - v));
    blue = 255;
    break;
   case 4: //蓝<-->中--红
    blue = 255;
    red = (int) (255 * v);
    break;
   case 5://蓝--中<-->红
    blue = (int) (255 * (1 - v));
    red = 255;
    break;
   default:
    red = 255;
    break;
  }
  vBgColor.setBackgroundColor(Color.rgb(red, green, blue));
  changeColor();
 }

 /**
  * 颜色明暗度调整
  */
 private void changeColor() {
  int tempRed = red;
  int tempGreen = green;
  int tempBlue = blue;
  float hPercent = 1 - (vLocation.getX() / (vBgColor.getWidth() - vLocation.getWidth()));
  float vPercent = vLocation.getY() / (vBgColor.getHeight() - vLocation.getHeight());
  switch (index) {
   case 0:
    tempGreen = (int) (green + hPercent * (255 - green));
    tempBlue = (int) (blue + hPercent * (255 - blue));
    break;
   case 1:
    tempRed = (int) (red + hPercent * (255 - red));
    tempBlue = (int) (blue + hPercent * (255 - blue));
    break;
   case 2:
    tempRed = (int) (red + hPercent * (255 - red));
    tempBlue = (int) (blue + hPercent * (255 - blue));
    break;
   case 3:
    tempRed = (int) (red + hPercent * (255 - red));
    tempGreen = (int) (green + hPercent * (255 - green));
    break;
   case 4:
    tempRed = (int) (red + hPercent * (255 - red));
    tempGreen = (int) (green + hPercent * (255 - green));
    break;
   case 5:
   case 6:
    tempGreen = (int) (green + hPercent * (255 - green));
    tempBlue = (int) (blue + hPercent * (255 - blue));
    break;
  }
  tempRed = (int) (tempRed - tempRed * vPercent);
  tempGreen = (int) (tempGreen - tempGreen * vPercent);
  tempBlue = (int) (tempBlue - tempBlue * vPercent);
  int color = Color.argb(transValue, tempRed, tempGreen, tempBlue);
  cpvColorPreview.setColor(color);
  if (onColorChangeListener != null) {
   onColorChangeListener.colorChanged(color);
  }
  int[] gradientColor = {Color.argb(0, 0, 0, 0), Color.rgb(tempRed, tempGreen, tempBlue)};
  GradientDrawable drawable = new GradientDrawable(GradientDrawable.Orientation.LEFT_RIGHT, gradientColor);
  vTransPreview.setBackground(drawable);
 }

 /**
  * 改变透明度
  *
  * @param progress
  */
 private void changeTransparency(int progress) {
  transValue = (int) (progress / 100F * 255);
  int color = Color.argb(transValue, red, green, blue);
  cpvColorPreview.setColor(color);
  if (onColorChangeListener != null) {
   onColorChangeListener.colorChanged(color);
  }
 }

 @Override
 public void onWindowFocusChanged(boolean hasWindowFocus) {
  super.onWindowFocusChanged(hasWindowFocus);
  RelativeLayout.LayoutParams layoutParams = (RelativeLayout.LayoutParams) vLocation.getLayoutParams();
  layoutParams.leftMargin = vBgColor.getWidth() - vLocation.getWidth();
  vLocation.setLayoutParams(layoutParams);

  colorBarLayoutParams.leftMargin = llColorProgress.getWidth() - vColorBar.getWidth();
  vColorBar.setLayoutParams(colorBarLayoutParams);

  transBarLayoutParams.leftMargin = rlTransBar.getWidth() - vTransBar.getWidth();
  vTransBar.setLayoutParams(transBarLayoutParams);

  int[] color = {Color.argb(0, 0, 0, 0), Color.rgb(255, 0, 0)};
  GradientDrawable drawable = new GradientDrawable(GradientDrawable.Orientation.LEFT_RIGHT, color);
  vTransPreview.setBackground(drawable);
 }

 /**
  * 设置该方法，颜色改变的时候会回调颜色值
  *
  * @param onColorChangeListener
  */
 public void setOnColorChangeListener(OnColorChangeListener onColorChangeListener) {
  this.onColorChangeListener = onColorChangeListener;
 }
}

以上这篇Android Studio设置颜色拾色器工具Color Picker教程就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持小牛知识库。

Android Studio设置颜色拾色器工具Color Picker教程

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