android 之批改图片的某一颜色值

首先我们来创建一个叫Image的类,这个类主要用来处理与图有关的一些操作。

package org.cn.tools;import java.io.IOException;import java.io.InputStream;import android.content.Context;import android.graphics.Bitmap;import android.graphics.Matrix;import android.graphics.Bitmap.Config;import android.graphics.BitmapFactory;public class Image {	public Bitmap bitmap;  //图片资源对象	/**	 * 通过id来获得图片 	 * @param context	 * @param id	 */	public Image(Context context,int id){	  	bitmap = BitmapFactory.decodeResource(context.getResources(), id);	}	/**	 * 通过图片文件名来获得图片，主要用于图片在Asset目录下时	 * @param context	 * @param name    图片名	 * @param scaleW  图片宽的缩放比例	 * @param scaleH  图片高的缩放比例	 * @throws IOException	 */	public Image(Context context,String name,float scaleW,float scaleH) throws IOException{		InputStream is = context.getAssets().open(name);		bitmap = BitmapFactory.decodeStream(is);		is.close();		bitmap = setScaleSize(bitmap, scaleW,scaleH);	}	public int getWidth(){		return bitmap.getWidth();	}	public int getHeight(){		return bitmap.getHeight();	}		/**	 * 将bitmap的像素值放入数组	 * @param array	 * @param x	 * @param y	 * @return	 */	public int[] getPixel(int[] array,int x,int y){		bitmap.getPixels(array, 0, getWidth(), 0, 0, getWidth(), getHeight());		return array;	}	/**	 * 通过一个像素数组创建Bitmap	 * @param array	 * @param w	 * @param h	 * @return	 */	public Bitmap CreateImage(int[] array,int w,int h){		Bitmap image = Bitmap.createBitmap(array, w, h, Config.RGB_565);		return image;	}	/**	 * 图片缩放	 * @param bitmap	 * @param arg0	 * @param arg1	 * @return	 */	private Bitmap setScaleSize(Bitmap bitmap,float arg0,float arg1){		Matrix matrix = new Matrix();		matrix.postScale(arg0,arg1);		bitmap = Bitmap.createBitmap(bitmap, 0, 0,getWidth(),getHeight(), matrix,true);		return bitmap;	}	/**	 * 图片内存回收	 * 	 * @param image	 * @return	 */	public static void free(Image image) {		try {			if(image.bitmap != null){				if(image.bitmap.isRecycled()==false) {//如果没有回收  					//回收图片所占的内存					image.bitmap.recycle();  					if(image.bitmap.isRecycled()== true){						image.bitmap = null;					}				}else{					image.bitmap = null;				}			}else{				image.bitmap = null;				//return null;			}					} catch (Exception e) {			e.printStackTrace();		}		//return image;	}}

package org.cn;import java.io.IOException;import java.lang.Character.UnicodeBlock;import android.app.Activity;import android.graphics.Bitmap;import android.graphics.drawable.BitmapDrawable;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.view.Window;import android.view.WindowManager;import android.view.WindowManager.LayoutParams;import android.widget.ImageView;public class ImageAct extends Activity {	Image image;	int len;	int red;	int greed;	int blue;	int apla;	int pix;	/** Called when the activity is first created. */	@Override	public void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setContentView(R.layout.main);		try {			image = new Image(this, "Alfa_Romeo_8C_Competizione_Detail.png",1,1);			len = image.getWidth() * image.getHeight();			int[] imageARGB = new int[len];			int[] newimage = new int[len];			image.getPixel(imageARGB, 0, 0);			for (int i = 0; i < image.getHeight(); i++)				for (int j = 0; j < image.getWidth(); j++) {					if (imageARGB[i * image.getWidth() + j] != 0) {						//apla = ((imageARGB[i * image.getWidth() + j]&0xaa000000)>>24);						red = ((imageARGB[i * image.getWidth() + j] & 0x00ff0000) >> 16);						greed = ((imageARGB[i * image.getWidth() + j] & 0x0000ff00) >> 8);						blue = ((imageARGB[i * image.getWidth() + j] & 0x000000ff));						// int apla = ((5 * 255 / 10) << 24) | 0x00ffffff;						if (red == 255 && greed == 255 & blue == 255) {							red = 255;							greed = 0;							blue = 0;							// pix =((red<<16)|(greed<<8)|blue)&apla;						}						pix = (red << 16) | (greed << 8) | blue;						newimage[i * image.getWidth() + j] = pix;					} else						newimage[i * image.getWidth() + j] = imageARGB[i								* image.getWidth() + j];				}			Bitmap bitmap = image.CreateImage(newimage, image.getWidth(),					image.getHeight());			((ImageView) findViewById(R.id.imageView1)).setImageBitmap(bitmap);		} catch (IOException e) {			// TODO Auto-generated catch block			e.printStackTrace();		}	}}