非常实用的Android图片工具类

概述本文实例为大家分享了Android图片工具类的具体代码，供大家参考，具体内容如下 @H_502_0@本文实例为大家分享了AndroID图片工具类的具体代码，供大家参考，具体内容如下

import java.io.ByteArrayOutputStream;import java.io.file;import java.io.fileNotFoundException;import java.io.fileOutputStream;import java.io.IOException;import androID.content.Context;import androID.graphics.Bitmap;import androID.graphics.Bitmap.CompressFormat;import androID.graphics.Bitmap.Config;import androID.graphics.BitmapFactory;import androID.graphics.Canvas;import androID.graphics.colorMatrix;import androID.graphics.colorMatrixcolorFilter;import androID.graphics.linearGradIEnt;import androID.graphics.Matrix;import androID.graphics.Paint;import androID.graphics.PorterDuff;import androID.graphics.PorterDuff.Mode;import androID.graphics.PorterDuffXfermode;import androID.graphics.Rect;import androID.graphics.RectF;import androID.graphics.Shader;import androID.graphics.drawable.BitmapDrawable;import androID.graphics.drawable.Drawable;/** * 图片工具类 * @author wwj * 2013/7/3 */public class ImageUtil {  /**图片的八个位置**/  public static final int top = 0;      //上    public static final int BottOM = 1;      //下  public static final int left = 2;      //左  public static final int RIGHT = 3;      //右  public static final int left_top = 4;    //左上  public static final int left_BottOM = 5;  //左下  public static final int RIGHT_top = 6;    //右上  public static final int RIGHT_BottOM = 7;  //右下    /**   * 图像的放大缩小方法   * @param src    源位图对象   * @param scaleX  宽度比例系数   * @param scaleY  高度比例系数   * @return 返回位图对象   */  public static Bitmap zoomBitmap(Bitmap src,float scaleX,float scaleY) {    Matrix matrix = new Matrix();    matrix.setScale(scaleX,scaleY);    Bitmap t_bitmap = Bitmap.createBitmap(src,src.getWIDth(),src.getHeight(),matrix,true);    return t_bitmap;  }    /**   * 图像放大缩小--根据宽度和高度   * @param src   * @param wIDth   * @param height   * @return   */  public static Bitmap zoomBimtap(Bitmap src,int wIDth,int height) {    return Bitmap.createScaledBitmap(src,wIDth,height,true);  }    /**   * 将Drawable转为Bitmap对象   * @param drawable   * @return   */  public static Bitmap drawabletoBitmap(Drawable drawable) {    return ((BitmapDrawable)drawable).getBitmap();  }      /**   * 将Bitmap转换为Drawable对象   * @param bitmap   * @return   */  public static Drawable bitmapToDrawable(Bitmap bitmap) {    Drawable drawable = new BitmapDrawable(bitmap);    return drawable;  }    /**   * Bitmap转byte[]   * @param bitmap   * @return   */  public static byte[] bitmapToByte(Bitmap bitmap) {    ByteArrayOutputStream out = new ByteArrayOutputStream();    bitmap.compress(Bitmap.CompressFormat.PNG,100,out);    return out.toByteArray();  }    /**   * byte[]转Bitmap   * @param data   * @return   */  public static Bitmap bytetoBitmap(byte[] data) {    if(data.length != 0) {      return BitmapFactory.decodeByteArray(data,data.length);    }    return null;  }    /**   * 绘制带圆角的图像   * @param src   * @param radius   * @return   */  public static Bitmap createRoundedCornerBitmap(Bitmap src,int radius) {    final int w = src.getWIDth();    final int h = src.getHeight();    // 高清量32位图    Bitmap bitmap = Bitmap.createBitmap(w,h,Config.ARGB_8888);    Paint paint = new Paint();    Canvas canvas = new Canvas(bitmap);    canvas.drawARGB(0,0);    paint.setcolor(0xff424242);    // 防止边缘的锯齿    paint.setFilterBitmap(true);    Rect rect = new Rect(0,w,h);    RectF rectf = new RectF(rect);    // 绘制带圆角的矩形    canvas.drawRoundRect(rectf,radius,paint);        // 取两层绘制交集，显示上层    paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));    // 绘制图像    canvas.drawBitmap(src,rect,paint);    return bitmap;  }    /**   * 创建选中带提示图片   * @param context   * @param srcID   * @param tipID   * @return   */  public static Drawable createSelectedTip(Context context,int srcID,int tipID) {    Bitmap src = BitmapFactory.decodeResource(context.getResources(),srcID);    Bitmap tip = BitmapFactory.decodeResource(context.getResources(),tipID);    final int w = src.getWIDth();    final int h = src.getHeight();    Bitmap bitmap = Bitmap.createBitmap(w,Config.ARGB_8888);    Paint paint = new Paint();    Canvas canvas = new Canvas(bitmap);    //绘制原图    canvas.drawBitmap(src,paint);    //绘制提示图片    canvas.drawBitmap(tip,(w - tip.getWIDth()),paint);    return bitmapToDrawable(bitmap);  }    /**   * 带倒影的图像   * @param src   * @return   */  public static Bitmap createReflectionBitmap(Bitmap src) {    // 两个图像间的空隙    final int spacing = 4;    final int w = src.getWIDth();    final int h = src.getHeight();    // 绘制高质量32位图    Bitmap bitmap = Bitmap.createBitmap(w,h + h / 2 + spacing,Config.ARGB_8888);    // 创建燕X轴的倒影图像    Matrix m = new Matrix();    m.setScale(1,-1);    Bitmap t_bitmap = Bitmap.createBitmap(src,h / 2,m,true);        Canvas canvas = new Canvas(bitmap);    Paint paint = new Paint();    //  绘制原图像    canvas.drawBitmap(src,paint);    // 绘制倒影图像    canvas.drawBitmap(t_bitmap,h + spacing,paint);    // 线性渲染-沿Y轴高到低渲染    Shader shader = new linearGradIEnt(0,h + spacing + h / 2,0x70ffffff,0x00ffffff,Shader.TileMode.MIRROR);    paint.setShader(shader);    // 取两层绘制交集，显示下层。    paint.setXfermode(new PorterDuffXfermode(Mode.DST_IN));    // 绘制渲染倒影的矩形    canvas.drawRect(0,paint);    return bitmap;  }      /**   * 独立的倒影图像   * @param src   * @return   */  public static Bitmap createReflectionBitmapForSingle(Bitmap src) {    final int w = src.getWIDth();    final int h = src.getHeight();    // 绘制高质量32位图    Bitmap bitmap = Bitmap.createBitmap(w,Config.ARGB_8888);    // 创建沿X轴的倒影图像    Matrix m = new Matrix();    m.setScale(1,true);    Canvas canvas = new Canvas(bitmap);    Paint paint = new Paint();    // 绘制倒影图像    canvas.drawBitmap(t_bitmap,paint);    // 线性渲染-沿Y轴高到低渲染      Shader shader = new linearGradIEnt(0,Shader.TileMode.MIRROR);    paint.setShader(shader);    // 取两层绘制交集。显示下层。    paint.setXfermode(new PorterDuffXfermode(Mode.DST_IN));    // 绘制渲染倒影的矩形    canvas.drawRect(0,paint);    return bitmap;  }      public static Bitmap createGreyBitmap(Bitmap src) {    final int w = src.getWIDth();    final int h = src.getHeight();    Bitmap bitmap = Bitmap.createBitmap(w,Config.ARGB_8888);    Canvas canvas = new Canvas(bitmap);    Paint paint = new Paint();    // 颜色变换的矩阵    colorMatrix matrix = new colorMatrix();    // saturation 饱和度值，最小可设为0，此时对应的是灰度图；为1表示饱和度不变，设置大于1，就显示过饱和    matrix.setSaturation(0);    colorMatrixcolorFilter filter = new colorMatrixcolorFilter(matrix);    paint.setcolorFilter(filter);    canvas.drawBitmap(src,paint);    return bitmap;  }    /**   * 保存图片   * @param src   * @param filepath   * @param format:[Bitmap.CompressFormat.PNG,Bitmap.CompressFormat.JPEG]   * @return   */  public static boolean saveImage(Bitmap src,String filepath,CompressFormat format) {    boolean rs = false;    file file = new file(filepath);    try {      fileOutputStream out = new fileOutputStream(file);      if(src.compress(format,out)) {        out.flush();  //写入流      }      out.close();    } catch (fileNotFoundException e) {      e.printstacktrace();    } catch (IOException e) {      e.printstacktrace();    }    return rs;  }    /**   * 添加水印效果   * @param src    源位图   * @param watermark  水印   * @param direction  方向   * @param spacing 间距   * @return   */  public static Bitmap createWatermark(Bitmap src,Bitmap watermark,int direction,int spacing) {    final int w = src.getWIDth();    final int h = src.getHeight();    Bitmap bitmap = Bitmap.createBitmap(w,Config.ARGB_8888);    Canvas canvas = new Canvas(bitmap);    canvas.drawBitmap(src,null);    if(direction == left_top) {      canvas.drawBitmap(watermark,spacing,null);    } else if(direction == left_BottOM){      canvas.drawBitmap(watermark,h - watermark.getHeight() - spacing,null);    } else if(direction == RIGHT_top) {      canvas.drawBitmap(watermark,w - watermark.getWIDth() - spacing,null);    } else if(direction == RIGHT_BottOM) {      canvas.drawBitmap(watermark,null);    }    return bitmap;  }      /**   * 合成图像   * @param direction   * @param bitmaps   * @return   */  public static Bitmap composeBitmap(int direction,Bitmap... bitmaps) {    if(bitmaps.length < 2) {      return null;    }    Bitmap firstBitmap = bitmaps[0];    for (int i = 0; i < bitmaps.length; i++) {      firstBitmap = composeBitmap(firstBitmap,bitmaps[i],direction);    }    return firstBitmap;  }  /**   * 合成两张图像   * @param firstBitmap   * @param secondBitmap   * @param direction   * @return   */  private static Bitmap composeBitmap(Bitmap firstBitmap,Bitmap secondBitmap,int direction) {    if(firstBitmap == null) {      return null;    }    if(secondBitmap == null) {      return firstBitmap;    }    final int fw = firstBitmap.getWIDth();    final int fh = firstBitmap.getHeight();    final int sw = secondBitmap.getWIDth();    final int sh = secondBitmap.getHeight();    Bitmap bitmap = null;    Canvas canvas = null;    if(direction == top) {      bitmap = Bitmap.createBitmap(sw > fw ? sw : fw,fh + sh,Config.ARGB_8888);      canvas = new Canvas(bitmap);      canvas.drawBitmap(secondBitmap,null);      canvas.drawBitmap(firstBitmap,sh,null);    } else if(direction == BottOM) {      bitmap = Bitmap.createBitmap(fw > sw ? fw : sw,Config.ARGB_8888);      canvas = new Canvas(bitmap);      canvas.drawBitmap(firstBitmap,null);      canvas.drawBitmap(secondBitmap,fh,null);    } else if(direction == left) {      bitmap = Bitmap.createBitmap(fw + sw,sh > fh ? sh : fh,sw,null);    } else if(direction == RIGHT) {      bitmap = Bitmap.createBitmap(fw + sw,fh > sh ? fh : sh,fw,null);    }    return bitmap;  }    }

@H_502_0@以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持编程小技巧。

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