NullPointerException : println needs a message in android

Maybe there's simply no message attached in exception you're catching. Try ex.printStackTrace(); instead. Hope this helps.

For anyone else that gets this, try replacing the lone method call or variable name with "" + varName.

For example,

Log.d("LOGCAT", getErrorMsg());

becomes

Log.d("LOGCAT", "" + getErrorMsg());

In the catch, use:

String err = (ex.getMessage()==null)?"SD Card failed":ex.getMessage();
Log.e("sdcard-err2:", err);

Passing null to the second argument of a Log logging function throws that error, regardless of the source.

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