The string has a bunch of newlines; strip those out and you should get the expected intValue
getting wrong int value from string
Frage
I am running a php script on my server via an iOS app that checks details entered into UITextFields and allows user to log in. Th response back from the PHP script is simply
<?php require_once("includes/connection_auth.php");
?>
<?php
$username = $_GET["userName"];
$userpassword = $_GET["userPassword"];
//check if users username exists in database
$selectQuery = mysqli_query($connection, "SELECT * FROM MVUsers WHERE userName = '$username' ");
if (!$selectQuery) {
printf("Error: %s\n", mysqli_error($connection));
exit();
}
if ($row = mysqli_fetch_assoc($selectQuery)){
//user found in database check password matches
if($row ['userPassword'] == $userpassword){
//password matches check if confirmed email
if($row ['userHasConfirmedEmail'] == 1){
//allow user to log in
echo (0);
}
else{
echo (1);
}
}
else{
//password does not match warn user
echo (2);
}
}
else{
echo(3);
}
//close connection to database
mysqli_close($connection);
?>
This echoed number is returned as NSData into my app and inside one of the NSURLConnectionDataDelegate callbacks i convert that data to an NSString then get the intValue from that string.
- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
NSString *string = [[NSString alloc]initWithData:[self receivedData] encoding:NSUTF8StringEncoding];
NSLog(@"Connection finished loading with string :%@",string);
int returnedInt = [string intValue];
NSLog(@"%i",returnedInt);
// returnedInt is the compared inside a switch statement.
}
The two log statements have different outputs for same data.
2014-02-05 13:20:47.363 MotoVlogger[50944:70b] Connection finished loading with string :
3
2014-02-05 13:20:47.363 MotoVlogger[50944:70b] 0
Why is is 3 in one instance and 0 in the other also why is all there all that added white space in the first log statement?
Lösung
Andere Tipps
try this:
-(NSInteger)convert:(NSString *)str
{
str =[str stringByReplacingOccurrencesOfString:@" " withString:@""];
NSInteger returnedInt = [str integerValue];
NSLog(@"%ld",(long)returnedInt);
return (long)returnedInt;
}
-(int)convert:(NSString *)str
{
str =[str stringByReplacingOccurrencesOfString:@" " withString:@""];
int returnedInt = [str intValue];
NSLog(@"%i",returnedInt);
return returnedInt;
}
seeing as the character i need is right at the end I'm just using
string =[string substringFromIndex:[string length]-1];
works but would like to know cause of white space
edit: as suggested by Austin I had to strip out lots so posted code to do so in comment under his answer.