The image color processing method of Android programming _android

This article illustrates the image color processing method of Android programming. Share to everyone for your reference, specific as follows:

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The effect chart is as follows:

Not before processing:

After processing:

The code for Mainactivity.java is as follows:

Package net.loonggg.test; 
Import android.app.Activity; 
Import Android.graphics.Bitmap; 
Import Android.graphics.BitmapFactory; 
Import Android.graphics.Canvas; 
Import Android.graphics.Color; 
Import Android.graphics.ColorMatrix; 
Import Android.graphics.ColorMatrixColorFilter; 
Import Android.graphics.Matrix; 
Import Android.graphics.Paint; 
Import Android.os.Bundle; 
Import Android.widget.ImageView; 
Import Android.widget.SeekBar; 
Import Android.widget.SeekBar.OnSeekBarChangeListener; 
  public class Mainactivity extends activity {private SeekBar sb1, SB2, SB3, SB4, SB5; 
  Private ImageView IV; 
  Private Bitmap Bitmap, Updatebitmap; 
  Private Canvas Canvas; 
  Private Paint Paint; 
    @Override protected void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate); 
    Setcontentview (R.layout.activity_main); 
    IV = (ImageView) Findviewbyid (R.ID.IV); 
    SB1 = (SeekBar) Findviewbyid (R.ID.SB1); 
    SB2 = (SeekBar) Findviewbyid (R.ID.SB2); Sb3= (SeekBar) Findviewbyid (R.ID.SB3); 
    SB4 = (SeekBar) Findviewbyid (R.ID.SB4); 
    SB5 = (SeekBar) Findviewbyid (R.ID.SB5); 
    Bitmap = Bitmapfactory.decoderesource (Getresources (), r.drawable.b); 
    Updatebitmap = Bitmap.createbitmap (Bitmap.getwidth (), Bitmap.getheight (), Bitmap.getconfig ()); 
    Canvas = new canvas (UPDATEBITMAP); 
    Paint = new paint (); 
    Final ColorMatrix cm = new ColorMatrix (); 
    Paint.setcolorfilter (new Colormatrixcolorfilter (cm)); 
    Paint.setcolor (Color.Black); 
    Paint.setantialias (TRUE); 
    Final Matrix matrix = new Matrix (); 
    Canvas.drawbitmap (bitmap, matrix, paint); 
    Iv.setimagebitmap (UPDATEBITMAP); 
      /** * RGB Three-color red value setting/Sb1.setonseekbarchangelistener (new Onseekbarchangelistener () {@Override 
        public void Onstoptrackingtouch (SeekBar SeekBar) {int progress = seekbar.getprogress (); Cm.set (new float[] {progress/128f, 0, 0, 0, 0,//red value 0, 1, 0, 0, 0,//Green value 
            0, 0, 1, 0, 0,//blue value 0, 0, 0, 1, 0//transparency}); 
        Paint.setcolorfilter (new Colormatrixcolorfilter (cm)); 
        Canvas.drawbitmap (bitmap, matrix, paint); 
      Iv.setimagebitmap (UPDATEBITMAP);  @Override public void Onstarttrackingtouch (SeekBar SeekBar) {} @Override public void 
    Onprogresschanged (SeekBar SeekBar, int progress, Boolean fromuser) {}}); 
      /** * RGB Three-color green value setting/Sb2.setonseekbarchangelistener (new Onseekbarchangelistener () {@Override 
        public void Onstoptrackingtouch (SeekBar SeekBar) {int progress = seekbar.getprogress (); Cm.set (New float[] {1, 0, 0, 0, 0,//red value 0, progress/128f, 0, 0, 0,//green value 0, 0, 1, 0, 0,//Blue 
        Values 0, 0, 0, 1, 0//transparency}); 
        Paint.setcolorfilter (new Colormatrixcolorfilter (cm)); 
        Canvas.drawbitmap (bitmap, matrix, paint); IV.setimagebitmap (UPDATEBITMAP);  @Override public void Onstarttrackingtouch (SeekBar SeekBar) {} @Override public void 
    Onprogresschanged (SeekBar SeekBar, int progress, Boolean fromuser) {}}); 
      /** * RGB Three primary color blue value setting/Sb3.setonseekbarchangelistener (new Onseekbarchangelistener () {@Override 
        public void Onstoptrackingtouch (SeekBar SeekBar) {int progress = seekbar.getprogress (); Cm.set (New float[] {1, 0, 0, 0, 0,//red value 0, 1, 0, 0, 0,//green value 0, 0, progress/128f, 0, 0,//Blue 
        Values 0, 0, 0, 1, 0//transparency}); 
        Paint.setcolorfilter (new Colormatrixcolorfilter (cm)); 
        Canvas.drawbitmap (bitmap, matrix, paint); 
      Iv.setimagebitmap (UPDATEBITMAP);  @Override public void Onstarttrackingtouch (SeekBar SeekBar) {} @Override public void Onprogresschanged (SeekBar SeekBar, int progrESS, Boolean fromuser) {}}); /** * RGB Three primary Colors three values are changed to set saturation (brightness)/Sb4.setonseekbarchangelistener (new Onseekbarchangelistener () {@O 
        Verride public void Onstoptrackingtouch (SeekBar SeekBar) {int progress = seekbar.getprogress (); Cm.set (new float[] {progress/128f, 0, 0, 0, 0,//red value 0, progress/128f, 0, 0, 0,//green value 0, 0 
        , progress/128f, 0, 0,//blue value 0, 0, 0, 1, 0//transparency}); 
        Paint.setcolorfilter (new Colormatrixcolorfilter (cm)); 
        Canvas.drawbitmap (bitmap, matrix, paint); 
      Iv.setimagebitmap (UPDATEBITMAP);  @Override public void Onstarttrackingtouch (SeekBar SeekBar) {} @Override public void 
    Onprogresschanged (SeekBar SeekBar, int progress, Boolean fromuser) {}}); 
      /** * RGB Three primary Colors set Transparency * * Sb5.setonseekbarchangelistener (new Onseekbarchangelistener () {@Override public void Onstoptrackingtouch (SeekBar SeekBar) {int progress = seekbar.getprogress (); 
            Cm.set (New float[] {1, 0, 0, 0, 0,//red value 0, 1, 0, 0, 0,//green value 0, 0, 1, 0, 0,//blue value 
        0, 0, 0, progress/128f, 0//transparency}); 
        Paint.setcolorfilter (new Colormatrixcolorfilter (cm)); 
        Canvas.drawbitmap (bitmap, matrix, paint); 
      Iv.setimagebitmap (UPDATEBITMAP);  @Override public void Onstarttrackingtouch (SeekBar SeekBar) {} @Override public void 
  Onprogresschanged (SeekBar SeekBar, int progress, Boolean fromuser) {}});

 } 
}

The

Layout file code is as follows:

<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:backg" Round= "#CDCDCD" android:orientation= "vertical" tools:context= ". Mainactivity "> <imageview android:id=" @+id/iv "android:layout_width=" Fill_parent "Android:layout_" height= "Wrap_content"/> <linearlayout android:layout_width= "Fill_parent" android:layout_height= 
    Ontent "android:gravity=" center_vertical "android:orientation=" horizontal "android:padding=" 10DP "> <textview android:layout_width= "wrap_content" android:layout_height= "Wrap_content"  
      Red: "android:textcolor=" #FF0000 "android:textsize=" "24sp"/> <seekbar android:id= "@+id/sb1" Android:layout_width= "Fill_parent" android:layout_height= "Wrap_content" Android:max= "256" android:progress= "128"/> </LinearLayout> <linearlayout android:layout_width= "f Ill_parent "android:layout_height=" wrap_content "android:gravity=" center_vertical "android:orientation=" hor Izontal "android:padding=" 10DP "> <textview android:layout_width=" wrap_content "Android:layo  
    ut_height= "Wrap_content" android:text= "Green:" android:textcolor= "#00FF00" android:textsize= "24sp"/> <seekbar android:id= "@+id/sb2" android:layout_width= fill_parent "android:layout_height=" Wra 
    P_content "android:max=" 256 "android:progress=" 128 "/> </LinearLayout> <linearlayout Android:layout_width= "Fill_parent" android:layout_height= "wrap_content" android:gravity= "center_vertical" a ndroid:orientation= "Horizontal" android:padding= "10DP" > <textview android:layout_width= "Wrap_conte" NT "Android:layout_height= "wrap_content" android:text= "Blue:" android:textcolor= "#0000FF" android:textsize= "24sp"/> <seekbar android:id= "@+id/sb3" android:layout_width= fill_parent "android:layout_height=" wrap _content "android:max=" 256 "android:progress=" 128 "/> </LinearLayout> <linearlayout A Ndroid:layout_width= "Fill_parent" android:layout_height= "wrap_content" android:gravity= "Center_vertical" an droid:orientation= "Horizontal" android:padding= "10DP" > <textview android:layout_width= "Wrap_conten" T "android:layout_height=" wrap_content "android:text=" saturation: "android:textcolor=" #000000 "Androi D:textsize= "16.5sp"/> <seekbar android:id= "@+id/sb4" android:layout_width= "Fill_parent" a 
  ndroid:layout_height= "Wrap_content" android:max= "256" android:progress= "128"/> </LinearLayout> 
   <linearlayout Android:layout_width= "Fill_parent" android:layout_height= "wrap_content" android:gravity= "center_vertical" android:orientation= "Horizontal" android:padding= "10DP" > <textview android:layout_width= "Wrap_cont" Ent "android:layout_height=" wrap_content "android:text=" Transparency: android:textcolor= "#000000" Andr 
      Oid:textsize= "16.5sp"/> <seekbar android:id= "@+id/sb5" android:layout_width= "Fill_parent" android:layout_height= "Wrap_content" android:max= "256" android:progress= "128"/> </linearlayout&gt 
; </LinearLayout>

It's over here, you see?

I hope this article will help you with the Android program.