Adjust lightness and darkness of ImageView, using LightingColorFilter.

Using LightingColorFilter, we can adjust lightness and darkness of ImageView by adjusting the passed parameter mul and add.

package com.example.androidcolorfilter;

import android.os.Bundle;
import android.app.Activity;
import android.graphics.Color;
import android.graphics.LightingColorFilter;
import android.widget.ImageView;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.TextView;

public class MainActivity extends Activity {
 
 ImageView imageView;

 SeekBar alphaMulBar, redMulBar, greenMulBar, blueMulBar;
 SeekBar alphaAddBar, redAddBar, greenAddBar, blueAddBar;
 TextView colorInfo;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        imageView = (ImageView)findViewById(R.id.iv);
        
        alphaMulBar = (SeekBar)findViewById(R.id.mula);
        redMulBar = (SeekBar)findViewById(R.id.mulr);
        greenMulBar = (SeekBar)findViewById(R.id.mulg);
        blueMulBar = (SeekBar)findViewById(R.id.mulb);
        
        alphaAddBar = (SeekBar)findViewById(R.id.adda);
        redAddBar = (SeekBar)findViewById(R.id.addr);
        greenAddBar = (SeekBar)findViewById(R.id.addg);
        blueAddBar = (SeekBar)findViewById(R.id.addb);
        
        colorInfo = (TextView)findViewById(R.id.colorinfo);

        alphaMulBar.setOnSeekBarChangeListener(colorBarChangeListener);
        redMulBar.setOnSeekBarChangeListener(colorBarChangeListener);
        greenMulBar.setOnSeekBarChangeListener(colorBarChangeListener);
        blueMulBar.setOnSeekBarChangeListener(colorBarChangeListener);
        
        alphaAddBar.setOnSeekBarChangeListener(colorBarChangeListener);
        redAddBar.setOnSeekBarChangeListener(colorBarChangeListener);
        greenAddBar.setOnSeekBarChangeListener(colorBarChangeListener);
        blueAddBar.setOnSeekBarChangeListener(colorBarChangeListener);

        setLightingColorFilter(imageView);
    }
    
    OnSeekBarChangeListener colorBarChangeListener
    = new OnSeekBarChangeListener(){

  @Override
  public void onProgressChanged(SeekBar arg0, int arg1, boolean arg2) {
   setLightingColorFilter(imageView);
  }

  @Override
  public void onStartTrackingTouch(SeekBar seekBar) {
   // TODO Auto-generated method stub
   
  }

  @Override
  public void onStopTrackingTouch(SeekBar seekBar) {
   // TODO Auto-generated method stub
   
  } 
    };
    
    private void setLightingColorFilter(ImageView iv){
     
     int mul = Color.argb(
       alphaMulBar.getProgress(), 
       redMulBar.getProgress(), 
       greenMulBar.getProgress(), 
       blueMulBar.getProgress());
     
     int add = Color.argb(
       alphaAddBar.getProgress(), 
       redAddBar.getProgress(), 
       greenAddBar.getProgress(), 
       blueAddBar.getProgress());
     
     LightingColorFilter lightingColorFilter = new LightingColorFilter(mul, add);
     iv.setColorFilter(lightingColorFilter);
     
     colorInfo.setText(
       "mul = #" + Integer.toHexString(mul) +"\n" +
       "add = #" + Integer.toHexString(add));
     
    }

}

<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:orientation="vertical">

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

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="mul"
        android:layout_alignParentLeft="true"/>
    
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <TextView
            android:id="@+id/text_mul_a"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="a"
            android:layout_alignParentLeft="true"/>
        <SeekBar 
            android:id="@+id/mula"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:max="255"
            android:progress="255"
            android:layout_toRightOf="@id/text_mul_a"
            android:layout_alignParentRight="true"/>
    </RelativeLayout>
    
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <TextView
            android:id="@+id/text_mul_r"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="r"
            android:layout_alignParentLeft="true"/>
        <SeekBar 
            android:id="@+id/mulr"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:max="255"
            android:progress="255"
            android:layout_toRightOf="@id/text_mul_r"
            android:layout_alignParentRight="true"/>
    </RelativeLayout>
    
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <TextView
            android:id="@+id/text_mul_g"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="g"
            android:layout_alignParentLeft="true"/>
        <SeekBar 
            android:id="@+id/mulg"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:max="255"
            android:progress="255"
            android:layout_toRightOf="@id/text_mul_g"
            android:layout_alignParentRight="true"/>
    </RelativeLayout>
    
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <TextView
            android:id="@+id/text_mul_b"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="b"
            android:layout_alignParentLeft="true"/>
        <SeekBar 
            android:id="@+id/mulb"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:max="255"
            android:progress="255"
            android:layout_toRightOf="@id/text_mul_b"
            android:layout_alignParentRight="true"/>
    </RelativeLayout>

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="add"
        android:layout_alignParentLeft="true"/>
    
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <TextView
            android:id="@+id/text_add_a"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="a"
            android:layout_alignParentLeft="true"/>
        <SeekBar 
            android:id="@+id/adda"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:max="255"
            android:progress="255"
            android:layout_toRightOf="@id/text_add_a"
            android:layout_alignParentRight="true"/>
    </RelativeLayout>
    
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <TextView
            android:id="@+id/text_add_r"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="r"
            android:layout_alignParentLeft="true"/>
        <SeekBar 
            android:id="@+id/addr"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:max="255"
            android:progress="255"
            android:layout_toRightOf="@id/text_add_r"
            android:layout_alignParentRight="true"/>
    </RelativeLayout>
    
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <TextView
            android:id="@+id/text_add_g"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="g"
            android:layout_alignParentLeft="true"/>
        <SeekBar 
            android:id="@+id/addg"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:max="255"
            android:progress="255"
            android:layout_toRightOf="@id/text_add_g"
            android:layout_alignParentRight="true"/>
    </RelativeLayout>
    
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <TextView
            android:id="@+id/text_add_b"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="b"
            android:layout_alignParentLeft="true"/>
        <SeekBar 
            android:id="@+id/addb"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:max="255"
            android:progress="255"
            android:layout_toRightOf="@id/text_add_b"
            android:layout_alignParentRight="true"/>
    </RelativeLayout>

    <TextView
        android:id="@+id/colorinfo"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

</LinearLayout>

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