图片和base64 String互转

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在转换之前把要转的图片放在assets目录下
图片转base64 String

public String PicToString(String name){        InputStream myInput = null;        String string=null;        try {            myInput = MainActivity.this.getAssets().open(name);            Bitmap bitmap = BitmapFactory.decodeStream(myInput);            ByteArrayOutputStream bStream = new ByteArrayOutputStream();            bitmap.compress(Bitmap.CompressFormat.PNG, 50, bStream);            byte[] bytes = bStream.toByteArray();            string = Base64.encodeToString(bytes, Base64.DEFAULT);            Log.i("--------->", "转string成功");        } catch (IOException e) {            Log.i("--------->", "转string失败");        }        return string;    }

这里写代码片

base64 String 转 bitmap

    public Bitmap stringToBitmap(String string) {        // 将字符串转换成Bitmap类型        Bitmap bitmap = null;        try {            byte[] bitmapArray;            bitmapArray = Base64.decode(string, Base64.DEFAULT);            bitmap = BitmapFactory.decodeByteArray(bitmapArray, 0,                    bitmapArray.length);            Log.i("--------->", "转bitmap成功");            } catch (Exception e) {            Log.i("--------->", "转bitmap失败");            }        return bitmap;    }

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