Android图片相关的操作

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Android图片相关的操作

/** * Tools for handler picture *  * @author Ryan.Tang *  */public final class ImageTools {    /**     * Transfer drawable to bitmap     *      * @param drawable     * @return     */    public static Bitmap drawableToBitmap(Drawable drawable) {        int w = drawable.getIntrinsicWidth();        int h = drawable.getIntrinsicHeight();        Bitmap.Config config = drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888                : Bitmap.Config.RGB_565;        Bitmap bitmap = Bitmap.createBitmap(w, h, config);        Canvas canvas = new Canvas(bitmap);        drawable.setBounds(0, 0, w, h);        drawable.draw(canvas);        return bitmap;    }    /**     * Bitmap to drawable     *      * @param bitmap     * @return     */    public static Drawable bitmapToDrawable(Bitmap bitmap) {        return new BitmapDrawable(bitmap);    }    /**     * Input stream to bitmap     *      * @param inputStream     * @return     * @throws Exception     */    public static Bitmap inputStreamToBitmap(InputStream inputStream)            throws Exception {        return BitmapFactory.decodeStream(inputStream);    }    /**     * Byte transfer to bitmap     *      * @param byteArray     * @return     */    public static Bitmap byteToBitmap(byte[] byteArray) {        if (byteArray.length != 0) {            return BitmapFactory                    .decodeByteArray(byteArray, 0, byteArray.length);        } else {            return null;        }    }    /**     * Byte transfer to drawable     *      * @param byteArray     * @return     */    public static Drawable byteToDrawable(byte[] byteArray) {        ByteArrayInputStream ins = null;        if (byteArray != null) {            ins = new ByteArrayInputStream(byteArray);        }        return Drawable.createFromStream(ins, null);    }    /**     * Bitmap transfer to bytes     *      * @param byteArray     * @return     */    public static byte[] bitmapToBytes(Bitmap bm) {        byte[] bytes = null;        if (bm != null) {            ByteArrayOutputStream baos = new ByteArrayOutputStream();            bm.compress(Bitmap.CompressFormat.PNG, 100, baos);            bytes = baos.toByteArray();        }        return bytes;    }    /**     * Drawable transfer to bytes     *      * @param drawable     * @return     */    public static byte[] drawableToBytes(Drawable drawable) {        BitmapDrawable bitmapDrawable = (BitmapDrawable) drawable;        Bitmap bitmap = bitmapDrawable.getBitmap();        byte[] bytes = bitmapToBytes(bitmap);        ;        return bytes;    }    /**     * Base64 to byte[]//   *///  public static byte[] base64ToBytes(String base64) throws IOException {//      byte[] bytes = Base64.decode(base64);//      return bytes;//  }////  /**//   * Byte[] to base64//   *///  public static String bytesTobase64(byte[] bytes) {//      String base64 = Base64.encode(bytes);//      return base64;//  }    /**     * Create reflection images     *      * @param bitmap     * @return     */    public static Bitmap createReflectionImageWithOrigin(Bitmap bitmap) {        final int reflectionGap = 4;        int w = bitmap.getWidth();        int h = bitmap.getHeight();        Matrix matrix = new Matrix();        matrix.preScale(1, -1);        Bitmap reflectionImage = Bitmap.createBitmap(bitmap, 0, h / 2, w,                h / 2, matrix, false);        Bitmap bitmapWithReflection = Bitmap.createBitmap(w, (h + h / 2),                Config.ARGB_8888);        Canvas canvas = new Canvas(bitmapWithReflection);        canvas.drawBitmap(bitmap, 0, 0, null);        Paint deafalutPaint = new Paint();        canvas.drawRect(0, h, w, h + reflectionGap, deafalutPaint);        canvas.drawBitmap(reflectionImage, 0, h + reflectionGap, null);        Paint paint = new Paint();        LinearGradient shader = new LinearGradient(0, bitmap.getHeight(), 0,                bitmapWithReflection.getHeight() + reflectionGap, 0x70ffffff,                0x00ffffff, TileMode.CLAMP);        paint.setShader(shader);        // Set the Transfer mode to be porter duff and destination in        paint.setXfermode(new PorterDuffXfermode(Mode.DST_IN));        // Draw a rectangle using the paint with our linear gradient        canvas.drawRect(0, h, w, bitmapWithReflection.getHeight()                + reflectionGap, paint);        return bitmapWithReflection;    }    /**     * Get rounded corner images     *      * @param bitmap     * @param roundPx     *            5 10     * @return     */    public static Bitmap getRoundedCornerBitmap(Bitmap bitmap, float roundPx) {        int w = bitmap.getWidth();        int h = bitmap.getHeight();        Bitmap output = Bitmap.createBitmap(w, h, Config.ARGB_8888);        Canvas canvas = new Canvas(output);        final int color = 0xff424242;        final Paint paint = new Paint();        final Rect rect = new Rect(0, 0, w, h);        final RectF rectF = new RectF(rect);        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;    }    /**     * Resize the bitmap     *      * @param bitmap     * @param width     * @param height     * @return     */    public static Bitmap zoomBitmap(Bitmap bitmap, int width, int height) {        int w = bitmap.getWidth();        int h = bitmap.getHeight();        Matrix matrix = new Matrix();        float scaleWidth = ((float) width / w);        float scaleHeight = ((float) height / h);        matrix.postScale(scaleWidth, scaleHeight);        Bitmap newbmp = Bitmap.createBitmap(bitmap, 0, 0, w, h, matrix, true);        return newbmp;    }    /**     * Resize the drawable     * @param drawable     * @param w     * @param h     * @return     */    public static Drawable zoomDrawable(Drawable drawable, int w, int h) {        int width = drawable.getIntrinsicWidth();        int height = drawable.getIntrinsicHeight();        Bitmap oldbmp = drawableToBitmap(drawable);        Matrix matrix = new Matrix();        float sx = ((float) w / width);        float sy = ((float) h / height);        matrix.postScale(sx, sy);        Bitmap newbmp = Bitmap.createBitmap(oldbmp, 0, 0, width, height,                matrix, true);        return new BitmapDrawable(newbmp);    }    /**     * Get images from SD card by path and the name of image     * @param photoName     * @return     */    public static Bitmap getPhotoFromSDCard(String path,String photoName){        Bitmap photoBitmap = BitmapFactory.decodeFile(path + "/" +photoName +".png");        if (photoBitmap == null) {            return null;        }else {            return photoBitmap;        }    }    /**     * Check the SD card      * @return     */    public static boolean checkSDCardAvailable(){        return android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED);    }    /**     * Get image from SD card by path and the name of image     * @param fileName     * @return     */    public static boolean findPhotoFromSDCard(String path,String photoName){        boolean flag = false;        if (checkSDCardAvailable()) {            File dir = new File(path);            if (dir.exists()) {                File folders = new File(path);                File photoFile[] = folders.listFiles();                for (int i = 0; i < photoFile.length; i++) {                    String fileName = photoFile[i].getName().split("\\.")[0];                    if (fileName.equals(photoName)) {                        flag = true;                    }                }            }else {                flag = false;            }//          File file = new File(path + "/" + photoName  + ".jpg" );//          if (file.exists()) {//              flag = true;//          }else {//              flag = false;//          }        }else {            flag = false;        }        return flag;    }    /**     * Save image to the SD card      * @param photoBitmap     * @param photoName     * @param path     */    public static void savePhotoToSDCard(Bitmap photoBitmap,String path,String photoName){        if (checkSDCardAvailable()) {            File dir = new File(path);            if (!dir.exists()){                dir.mkdirs();            }            File photoFile = new File(path , photoName + ".png");            FileOutputStream fileOutputStream = null;            try {                fileOutputStream = new FileOutputStream(photoFile);                if (photoBitmap != null) {                    if (photoBitmap.compress(Bitmap.CompressFormat.PNG, 100, fileOutputStream)) {                        fileOutputStream.flush();//                      fileOutputStream.close();                    }                }            } catch (FileNotFoundException e) {                photoFile.delete();                e.printStackTrace();            } catch (IOException e) {                photoFile.delete();                e.printStackTrace();            } finally{                try {                    fileOutputStream.close();                } catch (IOException e) {                    e.printStackTrace();                }            }        }     }    /**     * Delete the image from SD card     * @param context     * @param path     * file:///sdcard/temp.jpg     */    public static void deleteAllPhoto(String path){        if (checkSDCardAvailable()) {            File folder = new File(path);            File[] files = folder.listFiles();            for (int i = 0; i < files.length; i++) {                files[i].delete();            }        }    }    public static void deletePhotoAtPathAndName(String path,String fileName){        if (checkSDCardAvailable()) {            File folder = new File(path);            File[] files = folder.listFiles();            for (int i = 0; i < files.length; i++) {                if (files[i].getName().split("\\.")[0].equals(fileName)) {                    files[i].delete();                }            }        }    }}
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