记录一些常用的utils方法2

来源：互联网发布：cm和魔趣哪个优化好点编辑：程序博客网时间：2024/05/16 08:20

1: image图片转成base64

 /**     * @param imgPath 图片地址     * @return String     */    public static String imgToBase64(String imgPath) {        Bitmap bitmap = null;        if (imgPath !=null && imgPath.length() > 0) {            bitmap = readBitmap(imgPath);        }        if(bitmap == null){            Log.w("图片不存在","");        }        ByteArrayOutputStream out = null;        try {            out = new ByteArrayOutputStream();            if(bitmap != null){                bitmap.compress(Bitmap.CompressFormat.JPEG, 100, out);            }            out.flush();            out.close();            byte[] imgBytes = out.toByteArray();            return Base64.encodeToString(imgBytes, Base64.DEFAULT);        } catch (Exception e) {            // TODO Auto-generated catch block            return null;        } finally {            try {                if(out != null) {                    out.flush();                    out.close();                }            } catch (IOException e) {                // TODO Auto-generated catch block                e.printStackTrace();            }        }    }    public static Bitmap readBitmap(String imgPath) {        try {            return BitmapFactory.decodeFile(imgPath);        } catch (Exception e) {            // TODO Auto-generated catch block            return null;        }    }

2: base64转成bitmap

   /**     *     * @param base64Data base64     * @return Bitmap     */    public static Bitmap stringToBitmap(String base64Data){        //将字符串转换成Bitmap类型        Bitmap bitmap=null;        try {            byte[] bitmapArray;            bitmapArray=Base64.decode(base64Data, Base64.DEFAULT);            bitmap=BitmapFactory.decodeByteArray(bitmapArray, 0, bitmapArray.length);        } catch (Exception e) {            e.printStackTrace();        }        return bitmap;    }

3: drawable转成bitmap

 /**     *     * @param Drawable      * @return Bitmap     */    public static Bitmap drawableToBitmap( Drawable drawable){            if (drawable instanceof BitmapDrawable) {                return ((BitmapDrawable) drawable).getBitmap();            } else if (drawable instanceof NinePatchDrawable) {                Bitmap bitmap = Bitmap                        .createBitmap(                                drawable.getIntrinsicWidth(),                                drawable.getIntrinsicHeight(),                                drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565);                Canvas canvas = new Canvas(bitmap);                drawable.setBounds(0, 0, drawable.getIntrinsicWidth(),                        drawable.getIntrinsicHeight());                drawable.draw(canvas);                return bitmap;            } else {                return null;            }        }

阅读全文

0 0