转换成base64格式字符串和base64字符串转成bitmap

来源：互联网发布：阿里云系统手机备份编辑：程序博客网时间：2024/06/11 19:56
/** * 将bitmap转换成base64格式字符串 *  * @param bitmap * @return */public static String bitmaptoString(Bitmap bitmap) {// BitmapFactory.Options option = new BitmapFactory.Options();// //option.inSampleSize =4; // 将图片设为原来宽高的1/4，防止内存溢出// option.inJustDecodeBounds = true;// Bitmap bitmap = BitmapFactory.decodeFile(imageUrL, option);// 将Bitmap转换成Base64字符串StringBuffer string = new StringBuffer();ByteArrayOutputStream bStream = new ByteArrayOutputStream();try {bitmap.compress(CompressFormat.JPEG, 100, bStream);bStream.flush();bStream.close();byte[] bytes = bStream.toByteArray();string.append(Base64.encodeToString(bytes, Base64.NO_WRAP));} catch (IOException e) {e.printStackTrace();}System.out.println("string.." + string.length());return string.toString();}/** * 将url转换成base64格式字符串 *  * @param bitmap * @return */public static String urlToBitmapBase64(String url) {BitmapFactory.Options option = new BitmapFactory.Options();// option.inSampleSize =4; // 将图片设为原来宽高的1/4，防止内存溢出Bitmap bitmap = BitmapFactory.decodeFile(url, option);// 将Bitmap转换成Base64字符串StringBuffer string = new StringBuffer();ByteArrayOutputStream bStream = new ByteArrayOutputStream();try {bitmap.compress(CompressFormat.JPEG, 100, bStream);bStream.flush();bStream.close();byte[] bytes = bStream.toByteArray();string.append(Base64.encodeToString(bytes, Base64.NO_WRAP));} catch (IOException e) {e.printStackTrace();}LogUtil.d("TAG", "string.." + string.length());return string.toString();}/** * base64 String转成bitmap *  * @param string * @return */public static 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;}
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