Check letters in a text field

[kyle1320]

First off, I'm fairly new to programming so I'll need a good explanation of how do do this.

Now, I am trying to make an app to help with changing signs, the kind you see out of churches and such. I want to check if I have enough letters for what I want to say on the sign, so I want to see what letters are in the text I enter, and check each of them against the number of letters I have.

So, how do I check what letters are in a text field?

[kelvinkao]

The text property?

[finefin]

Try substringWithRange

NSLog([@"abcdefghijklmnop" substringWithRange:NSMakeRange(6, 1)]);
// output: g

Iterate through the string and count the letters. easy as pie.

[kelvinkao]

Ah, I misread that.

I would loop through the characters in the string one by one, and have an array of 26 integers that stores how many occurrences each letter has. At the end you will have a count for each letter.