NSLog To File

NSLog2File.m

@implementation UIApplication (Logging)

+ (void)redirectConsoleLogToDocumentFolder:(NSString *)filename
{
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
    NSString *logPath = [documentsDirectory stringByAppendingPathComponent:filename];
    freopen([logPath cStringUsingEncoding:NSASCIIStringEncoding], "a+", stderr);
}

@end