public String bitmaptoString(Bitmap bitmap) {// 将Bitmap转换成字符串String string = null;ByteArrayOutputStream bStream = new ByteArrayOutputStream();bitmap.compress(CompressFormat.PNG, 100, bStream);byte[] bytes = bStream.toByteArray();string = Base64.encodeToString(bytes, Base64.DEFAULT);return string;}
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);} catch (Exception e) {e.printStackTrace();}return bitmap;}
原文：http://www.cnblogs.com/fruitbolgs/p/4730646.html