Android編程之圖片顏色處理方法

本文實例講述了Android編程之圖片顏色處理方法。分享給大家供大家參考，具體如下：

你想做到跟美圖秀秀一樣可以處理自己的照片，美化自己的照片嗎？其實你也可以自己做一個這樣的軟件，廢話不多說了，直接上圖，上代碼了！

效果圖如下：

沒處理前：

處理之後：

MainActivity.java的代碼如下：

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 紅色值的設置 
     */ 
    sb1.setOnSeekBarChangeListener(new OnSeekBarChangeListener() { 
      @Override 
      public void onStopTrackingTouch(SeekBar seekBar) { 
        int progress = seekBar.getProgress(); 
        cm.set(new float[] { progress / 128f, 0, 0, 0, 0,// 紅色值 
            0, 1, 0, 0, 0,// 綠色值 
            0, 0, 1, 0, 0,// 藍色值 
            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 綠色值的設置 
     */ 
    sb2.setOnSeekBarChangeListener(new OnSeekBarChangeListener() { 
      @Override 
      public void onStopTrackingTouch(SeekBar seekBar) { 
        int progress = seekBar.getProgress(); 
        cm.set(new float[] { 1, 0, 0, 0, 0,// 紅色值 
            0, progress / 128f, 0, 0, 0,// 綠色值 
            0, 0, 1, 0, 0,// 藍色值 
            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 藍色值的設置 
     */ 
    sb3.setOnSeekBarChangeListener(new OnSeekBarChangeListener() { 
      @Override 
      public void onStopTrackingTouch(SeekBar seekBar) { 
        int progress = seekBar.getProgress(); 
        cm.set(new float[] { 1, 0, 0, 0, 0,// 紅色值 
            0, 1, 0, 0, 0,// 綠色值 
            0, 0, progress / 128f, 0, 0,// 藍色值 
            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 三個值都改變為設置飽和度（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,// 紅色值 
            0, progress / 128f, 0, 0, 0,// 綠色值 
            0, 0, progress / 128f, 0, 0,// 藍色值 
            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 設置透明度 
     */ 
    sb5.setOnSeekBarChangeListener(new OnSeekBarChangeListener() { 
      @Override 
      public void onStopTrackingTouch(SeekBar seekBar) { 
        int progress = seekBar.getProgress(); 
        cm.set(new float[] { 1, 0, 0, 0, 0,// 紅色值 
            0, 1, 0, 0, 0,// 綠色值 
            0, 0, 1, 0, 0,// 藍色值 
            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) { 
      } 
    }); 
  } 
}

布局文件代碼如下：

<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="紅色:" 
      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="綠色:" 
      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="藍色:" 
      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="飽和度:" 
      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>

到這裡就完了，看明白了嗎？

希望本文所述對大家Android程序設計有所幫助。