读取简单的CSV文件

NSString *path = [[NSBundle mainBundle] pathForResource:@"ECG_Data" ofType:@"csv"];

NSString *contents = [[NSString alloc] initWithContentsOfFile:path encoding:NSUTF8StringEncoding error:nil];

NSArray *contentsArray = [contents componentsSeparatedByCharactersInSet:[NSCharacterSet newlineCharacterSet]];

NSInteger idx;

for (idx = 0; idx < contentsArray.count; idx++) {

NSString* currentContent = [contentsArray objectAtIndex:idx];

NSArray* timeDataArr = [currentContent componentsSeparatedByCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:@","]];
}