This exception occurs because the JSON string is malformed, there is no "{" Start or no "}" end, a careful examination of the format of the JSON file will generally solve the problem. But sometimes the JSON file is normal, there is still this exception information, what to do, this is because your JSON file header with encoded characters (such as UTF-8, etc.), the JSON string is normal to read, but the parsing has an exception, Generally this occurs when the JSON string is read from the server or local files, the file in the header of the code, I encountered the situation in the Android2.1 phone will report abnormal, more than 2.1 of the phone is normal.
Workaround: We take a look at how the encoded file is different, with the UE open with encoded and non-encoded JSON file, and then switch to hex mode, you will find that the encoded file is three bytes more than the non-encoded file, read the encoded file as long as the first three bytes are not read, so that it can be parsed normally.
Files with UTF-8 encoding :
Files without encoding:
About JSON parsing when the exception org.json.jsonexception:a Jsonobject text must begin with ' {' at character 1 of? { The workaround