Android key: Read the problem of unknown characters at the beginning of txt

Most of the time we read the TXT with the traceprint output after the head will be inexplicably more than a question mark but you use a question mark to match him but the match is not an unknown character what is this, how to avoid this thing?

This is primarily a TXT file exists a BOM header string but in the Android state TXT does not recognize the string this BOM header is not visible in the computer

Treatment methods

1 Use an editing tool like noytepad++ to remove the BOM header from the TXT file and then upload this txt to Android to start the scripting process

2 The script reads txt every time it detects the existence of a BOM header string exists in the file content is not a better

The first way, I don't have to show myself to handle it.

The second I was using a function to implement the processing can be referred to below

Function text file format operation (file path) Dim read content read content=Trim (file. Read (file path))//determine if the first 3 characters are BOM header if Mid (read content,1,3) = CHR (239) & Chr (187) & Chr (191) Then//Yes, replace with empty and then re-write the content. This place is not sure if the BOM header may be there, except for the first line. File. Write file path, Replace (read content, CHR (239) & Chr (187) & Chr (191),"") End If//if the TXT in the end is not the end of the automatic add a carriage return newline character to implement this also resolves the replacement of the last line does not write \ r \ n will replace the case is not found If trim (read content)<>"" andRight (read the contents,2) <>"\ r \ n"Then file. Write file path, read content &"\ r \ n"End If End Function

Android key: Read the problem of unknown characters at the beginning of txt