Android编程之图片颜色处理方法

本文实例讲述了android编程之图片颜色处理方法。分享给大家供大家参考，具体如下：

你想做到跟美图秀秀一样可以处理自己的照片，美化自己的照片吗？其实你也可以自己做一个这样的软件，废话不多说了，直接上图，上代码了！

效果图如下：

没处理前：

处理之后：

mainactivity.java的代码如下：

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三原色 红色值的设置 
     */ 
    sb1.setonseekbarchangelistener(new onseekbarchangelistener() { 
      @override 
      public void onstoptrackingtouch(seekbar seekbar) { 
        int progress = seekbar.getprogress(); 
        cm.set(new float[] { progress / 128f, 0, 0, 0, 0,// 红色值 
            0, 1, 0, 0, 0,// 绿色值 
            0, 0, 1, 0, 0,// 蓝色值 
            0, 0, 0, 1, 0 // 透明度 
        }); 
        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三原色 绿色值的设置 
     */ 
    sb2.setonseekbarchangelistener(new onseekbarchangelistener() { 
      @override 
      public void onstoptrackingtouch(seekbar seekbar) { 
        int progress = seekbar.getprogress(); 
        cm.set(new float[] { 1, 0, 0, 0, 0,// 红色值 
            0, progress / 128f, 0, 0, 0,// 绿色值 
            0, 0, 1, 0, 0,// 蓝色值 
            0, 0, 0, 1, 0 // 透明度 
        }); 
        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三原色 蓝色值的设置 
     */ 
    sb3.setonseekbarchangelistener(new onseekbarchangelistener() { 
      @override 
      public void onstoptrackingtouch(seekbar seekbar) { 
        int progress = seekbar.getprogress(); 
        cm.set(new float[] { 1, 0, 0, 0, 0,// 红色值 
            0, 1, 0, 0, 0,// 绿色值 
            0, 0, progress / 128f, 0, 0,// 蓝色值 
            0, 0, 0, 1, 0 // 透明度 
        }); 
        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三原色 三个值都改变为设置饱和度（亮度） 
     */ 
    sb4.setonseekbarchangelistener(new onseekbarchangelistener() { 
      @override 
      public void onstoptrackingtouch(seekbar seekbar) { 
        int progress = seekbar.getprogress(); 
        cm.set(new float[] { progress / 128f, 0, 0, 0, 0,// 红色值 
            0, progress / 128f, 0, 0, 0,// 绿色值 
            0, 0, progress / 128f, 0, 0,// 蓝色值 
            0, 0, 0, 1, 0 // 透明度 
        }); 
        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三原色 设置透明度 
     */ 
    sb5.setonseekbarchangelistener(new onseekbarchangelistener() { 
      @override 
      public void onstoptrackingtouch(seekbar seekbar) { 
        int progress = seekbar.getprogress(); 
        cm.set(new float[] { 1, 0, 0, 0, 0,// 红色值 
            0, 1, 0, 0, 0,// 绿色值 
            0, 0, 1, 0, 0,// 蓝色值 
            0, 0, 0, progress / 128f, 0 // 透明度 
        }); 
        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) { 
      } 
    }); 
  } 
}

布局文件代码如下：

<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:background="#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="wrap_content" 
    android:gravity="center_vertical" 
    android:orientation="horizontal" 
    android:padding="10dp" > 
    <textview 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:text="红色:" 
      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="fill_parent" 
    android:layout_height="wrap_content" 
    android:gravity="center_vertical" 
    android:orientation="horizontal" 
    android:padding="10dp" > 
    <textview 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:text="绿色:" 
      android:textcolor="#00ff00" 
      android:textsize="24sp" /> 
    <seekbar 
      android:id="@+id/sb2" 
      android:layout_width="fill_parent" 
      android: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_content" 
      android:layout_height="wrap_content" 
      android:text="蓝色:" 
      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 
    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_content" 
      android:layout_height="wrap_content" 
      android:text="饱和度:" 
      android:textcolor="#000000" 
      android:textsize="16.5sp" /> 
    <seekbar 
      android:id="@+id/sb4" 
      android:layout_width="fill_parent" 
      android: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_content" 
      android:layout_height="wrap_content" 
      android:text="透明度:" 
      android:textcolor="#000000" 
      android: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> 
</linearlayout>

到这里就完了，看明白了吗？

希望本文所述对大家android程序设计有所帮助。