BitMap、Drawable、InputStream、Byte[]互换

来源：互联网发布：js cookie大小编辑：程序博客网时间：2024/05/18 18:21

该方法主要是Bitmap、Drawable、InputStream、Byte[]之间的互相转换.

/**     * Bitmap 转换为 InputStream     * @param bitmap     * @return     */    public InputStream bitmapToInputStream(Bitmap bitmap){        InputStream is;        ByteArrayOutputStream baos = new ByteArrayOutputStream();        bitmap.compress(Bitmap.CompressFormat.PNG, 100, baos);        is = new ByteArrayInputStream(baos .toByteArray());        return is;    }    /**     * Bitmap 转换为 byte[]     * @param is     * @return     */    public byte[] bitmapToByteArray(InputStream is){        byte[] data;        Bitmap defaultIcon = BitmapFactory.decodeStream(is);          ByteArrayOutputStream stream = new ByteArrayOutputStream();          defaultIcon.compress(Bitmap.CompressFormat.JPEG, 100, stream);          data = stream.toByteArray();          return data;    }    /**     * Drawable 转换为 byte[]     * @param defaultIcon     * @return     */    public byte[] drawableToByteArray(Bitmap defaultIcon){          byte[] data;          Drawable d = null; // the drawable (Captain Obvious, to the rescue!!!)          Bitmap bitmap = ((BitmapDrawable)d).getBitmap();          ByteArrayOutputStream stream = new ByteArrayOutputStream();          defaultIcon.compress(Bitmap.CompressFormat.JPEG, 100, stream);          data = stream.toByteArray();          return data;    }      /**     * byte 转换为 Bitmap     * @param bitmapdata     * @return     */    public Bitmap byteArrayToBitmap(byte[] bitmapdata){        Bitmap bitmap =BitmapFactory.decodeByteArray(bitmapdata, 0,bitmapdata.length);        return bitmap;    }

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