different_kivy_logger.py

from kivy.logger import Logger
from kivy.properties import ListProperty
from kivy.event import EventDispatcher
from time import time

class LoggerHistoryProper(EventDispatcher):
    data = ListProperty()

    def __init__(self, **kwargs):
        self.register_event_type('on_add_data')
        super(self.__class__, self).__init__(**kwargs)

    def on_add_data(self, data):
        pass

    def add_data(self, text, level):
        new = {'time': time(), 'level': level, 'text': text}
        self.data.append(new)
        self.dispatch('on_add_data', new)

LoggerHistoryProper = LoggerHistoryProper()

def exception(msg, *args):
    Logger._info(msg)
    LoggerHistoryProper.add_data(msg, 'exception')

def warning(msg, *args):
    Logger._info(msg)
    LoggerHistoryProper.add_data(msg, 'warning')

def error(msg, *args):
    Logger._info(msg)
    LoggerHistoryProper.add_data(msg, 'error')

def info(msg, *args):
    Logger._info(msg)
    LoggerHistoryProper.add_data(msg, 'info')

Logger._exception = Logger.exception
Logger._warning = Logger.warning
Logger._info = Logger.error
Logger._info = Logger.info
Logger.exception = exception
Logger.warning = warning
Logger.info = error
Logger.info = info