android上特效(源代码)

package com.test;import android.R.integer;import android.app.Activity;import android.content.Context;import android.graphics.Bitmap;import android.graphics.Bitmap.Config;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.graphics.Rect;import android.graphics.RectF;import android.os.Bundle;import android.view.View;public class NewActivity extends Activity{@Overrideprotected void onCreate(Bundle savedInstanceState){// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);setContentView(new _view(this));}class _view extends View{public _view(Context context){super(context);// TODO Auto-generated constructor stub}@Overridepublic void onDraw(Canvas canvas){RectF rectF = new RectF(30f, 300f, 400f, 800f);Matrix _Matrix = new Matrix();Paint _Paint = new Paint();_Paint.setColor(Color.BLUE);canvas.drawArc(rectF, 0f, 180f, true, _Paint);Bitmap bitmap = BitmapFactory.decodeFile("data/data/com.test/filse/psb.jpg");int psb[] = new int[bitmap.getWidth() * bitmap.getHeight()] ;bitmap.getPixels(psb, 0, bitmap.getWidth(), 0, 0, bitmap.getWidth(), bitmap.getHeight());        int width = bitmap.getWidth();          int height = bitmap.getHeight();          Bitmap _bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);          int pixColor = 0;          int pixR = 0;          int pixG = 0;          int pixB = 0;          int newR = 0;          int newG = 0;          int newB = 0;          int[] pixels = new int[width * height];          bitmap.getPixels(pixels, 0, width, 0, 0, width, height);          for (int i = 0; i < height; i++)          {              for (int k = 0; k < width; k++)              {                  pixColor = pixels[width * i + k];                  pixR = Color.red(pixColor);                  pixG = Color.green(pixColor);                  pixB = Color.blue(pixColor);                  newR = (int) (0.393 * pixR + 0.769 * pixG + 0.189 * pixB);                  newG = (int) (0.349 * pixR + 0.686 * pixG + 0.168 * pixB);                  newB = (int) (0.272 * pixR + 0.534 * pixG + 0.131 * pixB);                  int newColor = Color.argb(255, newR > 255 ? 255 : newR, newG > 255 ? 255 : newG, newB > 255 ? 255 : newB);                  pixels[width * i + k] = newColor;              }          }                    _bitmap.setPixels(pixels, 0, width, 0, 0, width, height);/*int count = 0;        int  preColor = 0;        int  prepreColor = 0;        int color = 0;        for (int i = 0; i < bitmap.getWidth(); i++)        {              for (int j = 0;  j < bitmap.getHeight(); j++)               {                int curr_color = psb[count];//              int curr_color = psb[i*bitmap.getHeight() + j];                int r = Color.red(prepreColor) - Color.red(curr_color) +127;                int g = Color.green(prepreColor) - Color.green(curr_color) +127;                int b = Color.blue(prepreColor) - Color.blue(curr_color) +127;                int a = Color.alpha(prepreColor);                int modif_color  = Color.argb(a, r, g, b);//                bitmap.setPixel(i, j, modif_color);//                psb[i*bitmap.getHeight() + j] = modif_color;                psb[count] = modif_color;                prepreColor = preColor;                preColor = curr_color;                count++;            }        }*/        canvas.drawBitmap(_bitmap,0,0,null);/*Rect _Rect = new Rect(300, 300, 500, 500);Rect _Rect2 = new Rect(20, 20, 170, 170);//canvas.drawBitmap(bitmap, null, _Rect, null);canvas.drawBitmap(bitmap,null, _Rect2, _Paint);_Matrix.setRotate(45f, 300, 300);canvas.setMatrix(_Matrix);ColorMatrix _ColorMatrix = new ColorMatrix();_ColorMatrix.setSaturation(0);ColorMatrixColorFilter _ColorMatrixColorFilter = new ColorMatrixColorFilter(_ColorMatrix);_Paint.setColorFilter(_ColorMatrixColorFilter);canvas.drawBitmap(bitmap, null, _Rect, _Paint);*/}}}
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