Android converts a picture from Base64 to a string to convert the picture string to bitmap

1.Bitmap Convert to Picture string

Bitmap Bitmap =new  bytearrayoutputstream (); // This method is used to compress the picture, the first parameter is the picture format, the second parameter is the retention rate of the captured picture, if the current is 90, retains the area of the previous picture 90% bitmap.compress (bitmap.compressformat.jpeg,90 , outputstream); byte [] Imagebyte = outputstream.tobytearray (); // get the picture of the string String imagestr = Base64.encode (imagebyte);

2. Convert a picture string to bitmap

// set str as a picture string byte [] Imagebyte == Bitmapfactory.decodebytearray (imagebyte,0,imagebyte.length);