IOS determines that NSString only contains numbers

IOS determines that NSString only contains numbers

// Determine whether it is an integer:

 

-(BOOL) isPureInt :( NSString *) string {

Ns‑* scan = [ns‑scannerwithstring: string];

Int val;

Return [scan scanInt: & val] & [scan isAtEnd];

}

// Determine whether it is a floating point:

-(BOOL) isPureFloat :( NSString *) string {

Ns‑* scan = [ns‑scannerwithstring: string];

Float val;

Return [scan scanFloat: & val] & [scan isAtEnd];

}

 

If (! [Self isPureInt: textField. text] |! [Self isPureFloat: textField. text]) {

TextField. textColor = [UIColor redColor];

TextField. text = @ "Warning: contains invalid characters. Please enter a pure number! ";

Return;

} Else {

TextField. textColor = [UIColor blackColor];

If ([textField. text integerValue]> self. moneyT ){

[SMAlertView showAlert: [NSString stringWithFormat: @ "the refund amount cannot exceed the total amount of money bag % ld. Please enter", (long) self. moneyT] again;

TextField. text = nil;

} Else {

Self. money = textField. text;

}

}