How do I get a float value from a text field?

Question

I've seen others ask similar questions, but none of the answers have worked for me; I get the message "Expected ';' at end of declaration list". Can someone walk me through what I'm supposed to do? (This is my first question here, so I'm sorry if I did something wrong.)

Usually a good idea to show the code and give a little bit more detail about where you think something has gone wrong. Allows people to point you in the right direction. Also, helps to show what research you have done yourself. — Ben Green, May 30 '13 at 13:19

score 11 · Answer 1 · edited May 23 '17 at 11:53

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float yourVariable = [yourTextField.text floatValue];

Make sure you add validations to your textfield. If you have any non-numeric it will return 0.

How to convert NSString value @"3.45" into float?

I also gone through following link which says returns 0.0 if the receiver doesn’t begin with a valid text representation of a floating-point number.

edited May 23 '17 at 11:53

Community

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answered May 30 '13 at 13:04

Bhupesh

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score 1 · Answer 2 · edited May 30 '13 at 13:09

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float floatsample = [sampletextfield.text floatValue];

edited May 30 '13 at 13:09

Ry-

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answered May 30 '13 at 13:03

iPhone developer.

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score 1 · Answer 3 · answered May 30 '13 at 13:11

Do this:

NSNumberFormatter *floatFormatter = [[NSNumberFormatter alloc] init];
[floatFormatter numberFromString:textField.text];

Assuming textField is your textField. Then you can check floatFormatter for a nil NSNumber if it can't parse the string properly.

How do I get a float value from a text field?

3 Answers3