我使用以下代码,但它只检查第一行的第一列。但我想检查 csv 文件中所有行的第一列。请帮忙
- (void) SearchStudent
{
NSArray *DocumentPath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); //I upload the csv file to documents folder of the app through itunes
NSString *DocumentDirectory = [DocumentPath objectAtIndex:0];
NSString *FullPath = [DocumentDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"example.csv"]];
NSString * pstrCSVFile= [NSString stringWithContentsOfFile:FullPath encoding:NSASCIIStringEncoding error:NULL];
NSArray * paRowsOfCSVFile= [pstrCSVFile componentsSeparatedByString:@"\n"];
NSArray *paColumnsOfRow;
NSString *pstrFirstColumn;
for(NSString * pstrRow in paRowsOfCSVFile)
{
paColumnsOfRow= [pstrRow componentsSeparatedByString:@","];
pstrFirstColumn= [paColumnsOfRow objectAtIndex:0];
if([pstrFirstColumn localizedCaseInsensitiveCompare:GWIDText.text] == NSOrderedSame)
{
UIAlertView *alertingFileName = [[UIAlertView alloc]initWithTitle:@"Error" message:@"Found" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
[alertingFileName show];
break;
}
else
{
UIAlertView *alertingFileName1 = [[UIAlertView alloc]initWithTitle:@"Error" message:@"Not Found" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
[alertingFileName1 show];
}
}
}