-(void)writeToFileWithString:(NSString*)string withFileName:(NSString*)fileName{//@"Map_Succ.txt"NSString* fileName1 = [self filePath:fileName];NSFileManager* fileManager = [NSFileManager defaultManager];NSString* str = nil;if ( [fileManager fileExistsAtPath:fileName1]) {NSData* data = [NSData dataWithContentsOfFile:fileName1];str =[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]...