Android example code using ColorFilter

MainActivity.java

package com.blogspot.android_er.androidcolorfilter;

import android.graphics.ColorFilter;
import android.graphics.ColorMatrixColorFilter;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.ImageView;
import android.widget.SeekBar;

public class MainActivity extends AppCompatActivity {

    ImageView imageView;
    SeekBar redBar, greenBar, blueBar;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        imageView = (ImageView)findViewById(R.id.iv);
        redBar = (SeekBar)findViewById(R.id.redbar);
        greenBar = (SeekBar)findViewById(R.id.greenbar);
        blueBar = (SeekBar)findViewById(R.id.bluebar);

        redBar.setOnSeekBarChangeListener(colorBarChangeListener);
        greenBar.setOnSeekBarChangeListener(colorBarChangeListener);
        blueBar.setOnSeekBarChangeListener(colorBarChangeListener);

        setColorFilter(imageView);
    }

    SeekBar.OnSeekBarChangeListener colorBarChangeListener
            = new SeekBar.OnSeekBarChangeListener(){

        @Override
        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
            setColorFilter(imageView);
        }

        @Override
        public void onStartTrackingTouch(SeekBar seekBar) {

        }

        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {

        }
    };

    private void setColorFilter(ImageView iv){

       /*
        * 5x4 matrix for transforming the color+alpha components of a Bitmap.
        * The matrix is stored in a single array, and its treated as follows:
        * [  a, b, c, d, e,
        *   f, g, h, i, j,
        *   k, l, m, n, o,
        *   p, q, r, s, t ]
        *
        * When applied to a color [r, g, b, a], the resulting color is computed
        * as (after clamping)
        * R' = a*R + b*G + c*B + d*A + e;
        * G' = f*R + g*G + h*B + i*A + j;
        * B' = k*R + l*G + m*B + n*A + o;
        * A' = p*R + q*G + r*B + s*A + t;
        */

        float redValue = ((float)redBar.getProgress())/255;
        float greenValue = ((float)greenBar.getProgress())/255;
        float blueValue = ((float)blueBar.getProgress())/255;

        float[] colorMatrix = {
                redValue, 0, 0, 0, 0,  //red
                0, greenValue, 0, 0, 0, //green
                0, 0, blueValue, 0, 0,  //blue
                0, 0, 0, 1, 0    //alpha
        };

        ColorFilter colorFilter = new ColorMatrixColorFilter(colorMatrix);
        iv.setColorFilter(colorFilter);
    }

}

layout/activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="16dp"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:autoLink="web"
        android:text="http://android-er.blogspot.com/"
        android:textStyle="bold" />

    <ImageView
        android:id="@+id/iv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@mipmap/ic_launcher"/>

    <SeekBar
        android:id="@+id/redbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:max="255"
        android:progress="255"/>
    <SeekBar
        android:id="@+id/greenbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:max="255"
        android:progress="255"/>
    <SeekBar
        android:id="@+id/bluebar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:max="255"
        android:progress="255"/>
</LinearLayout>

Related:
- Convert ImageView to black and white, and set brightness, using ColorFilter