package com.zhanggeng.contact.tools; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import android.graphics.Bitmap; import android.graphics.Bitmap.Config; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.ColorMatrix; import android.graphics.ColorMatrixColorFilter; import android.graphics.Paint; import android.graphics.PorterDuff.Mode; import android.graphics.PorterDuffXfermode; import android.graphics.Rect; import android.graphics.RectF; import android.graphics.drawable.BitmapDrawable; import android.view.ViewGroup; import android.view.animation.AccelerateInterpolator; /**  * 处理图片的工具类.  *  */ public class ImageTools {  /** */  /**   * 图片去色,返回灰度图片   *   * @param bmpOriginal   *            传入的图片   * @return 去色后的图片   */  public static Bitmap toGrayscale(Bitmap bmpOriginal) {   int width, height;   height = bmpOriginal.getHeight();   width = bmpOriginal.getWidth();   Bitmap bmpGrayscale = Bitmap.createBitmap(width, height,     Bitmap.Config.RGB_565);   Canvas c = new Canvas(bmpGrayscale);   Paint paint = new Paint();   ColorMatrix cm = new ColorMatrix();   cm.setSaturation(0);   ColorMatrixColorFilter f = new ColorMatrixColorFilter(cm);   paint.setColorFilter(f);   c.drawBitmap(bmpOriginal, 0, 0, paint);   return bmpGrayscale;  }  /** */  /**   * 去色同时加圆角   *   * @param bmpOriginal   *            原图   * @param pixels   *            圆角弧度   * @return 修改后的图片   */  public static Bitmap toGrayscale(Bitmap bmpOriginal, int pixels) {   return toRoundCorner(toGrayscale(bmpOriginal), pixels);  }  /** */  /**   * 把图片变成圆角   *   * @param bitmap   *            需要修改的图片   * @param pixels   *            圆角的弧度   * @return 圆角图片   */  public static Bitmap toRoundCorner(Bitmap bitmap, int pixels) {   Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),     bitmap.getHeight(), Config.ARGB_8888);   Canvas canvas = new Canvas(output);   final int color = 0xff424242;   final Paint paint = new Paint();   final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());   final RectF rectF = new RectF(rect);   final float roundPx = pixels;   paint.setAntiAlias(true);   canvas.drawARGB(0, 0, 0, 0);   paint.setColor(color);   canvas.drawRoundRect(rectF, roundPx, roundPx, paint);   paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));   canvas.drawBitmap(bitmap, rect, rect, paint);   return output;  }  /** */  /**   * 使圆角功能支持BitampDrawable   *   * @param bitmapDrawable   * @param pixels   * @return   */  public static BitmapDrawable toRoundCorner(BitmapDrawable bitmapDrawable,    int pixels) {   Bitmap bitmap = bitmapDrawable.getBitmap();   bitmapDrawable = new BitmapDrawable(toRoundCorner(bitmap, pixels));   return bitmapDrawable;  }  /**   * 读取路径中的图片，然后将其转化为缩放后的bitmap   *   * @param path   */  public static void saveBefore(String path) {   BitmapFactory.Options options = new BitmapFactory.Options();   options.inJustDecodeBounds = true;   // 获取这个图片的宽和高   Bitmap bitmap = BitmapFactory.decodeFile(path, options); // 此时返回bm为空   options.inJustDecodeBounds = false;   // 计算缩放比   int be = (int) (options.outHeight / (float) 200);   if (be <= 0)    be = 1;   options.inSampleSize = 2; // 图片长宽各缩小二分之一   // 重新读入图片，注意这次要把options.inJustDecodeBounds 设为 false哦   bitmap = BitmapFactory.decodeFile(path, options);   int w = bitmap.getWidth();   int h = bitmap.getHeight();   System.out.println(w + "   " + h);   // savePNG_After(bitmap,path);   saveJPGE_After(bitmap, path);  }  /**   * 保存图片为PNG   *   * @param bitmap   * @param name   */  public static void savePNG_After(Bitmap bitmap, String name) {   File file = new File(name);   try {    FileOutputStream out = new FileOutputStream(file);    if (bitmap.compress(Bitmap.CompressFormat.PNG, 100, out)) {     out.flush();     out.close();    }   } catch (FileNotFoundException e) {    e.printStackTrace();   } catch (IOException e) {    e.printStackTrace();   }  }  /**   * 保存图片为JPEG   *   * @param bitmap   * @param path   */  public static void saveJPGE_After(Bitmap bitmap, String path) {   File file = new File(path);   try {    FileOutputStream out = new FileOutputStream(file);    if (bitmap.compress(Bitmap.CompressFormat.JPEG, 100, out)) {     out.flush();     out.close();    }   } catch (FileNotFoundException e) {    e.printStackTrace();   } catch (IOException e) {    e.printStackTrace();   }  }  /**   * 图片合成   *   * @param bitmap   * @return   */  private Bitmap createBitmap(Bitmap src, Bitmap watermark) {   if (src == null) {    return null;   }   int w = src.getWidth();   int h = src.getHeight();   int ww = watermark.getWidth();   int wh = watermark.getHeight();   // create the new blank bitmap   Bitmap newb = Bitmap.createBitmap(w, h, Config.ARGB_8888);// 创建一个新的和SRC长度宽度一样的位图   Canvas cv = new Canvas(newb);   // draw src into   cv.drawBitmap(src, 0, 0, null);// 在 0，0坐标开始画入src   // draw watermark into   cv.drawBitmap(watermark, w - ww + 5, h - wh + 5, null);// 在src的右下角画入水印   // save all clip   cv.save(Canvas.ALL_SAVE_FLAG);// 保存   // store   cv.restore();// 存储   return newb;  }  // 将图片转换成byte[]以便能将其存到数据库  public static byte[] getByteFromBitmap(Bitmap bitmap) {   ByteArrayOutputStream out = new ByteArrayOutputStream();   bitmap.compress(Bitmap.CompressFormat.JPEG, 100, out);   try {    out.flush();    out.close();   } catch (IOException e) {    e.printStackTrace();    // Log.e(TAG, "transform byte exception");   }   return out.toByteArray();  }  // 得到存储在数据库中的图片  // eg imageView.setImageBitmap(bitmapobj);  public static Bitmap getBitmapFromByte(byte[] temp) {   if (temp != null) {    Bitmap bitmap = BitmapFactory.decodeByteArray(temp, 0, temp.length);    return bitmap;   } else {    // Bitmap bitmap=BitmapFactory.decodeResource(getResources(),    // R.drawable.contact_add_icon);    return null;   }  }     //将手机中的文件转换为Bitmap类型  public static Bitmap getBitemapFromFile(File f) {   if (!f.exists())    return null;   try {    return BitmapFactory.decodeFile(f.getAbsolutePath());   } catch (Exception ex) {    return null;   }  }  //将手机中的文件转换为Bitmap类型(重载+1)  public static Bitmap getBitemapFromFile(String fileName) {   try {    return BitmapFactory.decodeFile(fileName);   } catch (Exception ex) {    return null;   }  } }