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iOS

Posted by Tom Coomer
Tom Coomer
1,331 Points

Changing Text from array

I would like to change a string to the value of an array. E.g. String = @"Hello"

Array 1 = [@"Hello",@"Goodbye"] Array 2 = [@"Howdy",@"Night night"]

String = replace @"Hello" with @"Howdy"

Thanks for your help. I have been stuck on this for a while.

Wilhelm Michaelsen
Wilhelm Michaelsen
449 Points

I dont understand your question, do you want to assign an array value to a new string variable? Or do you want to change an array value to a value of another array?

Tom Coomer
Tom Coomer
1,331 Points

If the string value is equal to one of the objects in the arrtay I would like to change the string value to its corresponding value in the second array. If the string value is object 5 in array 1 then replaces with object 5 in array 2.

2 Answers

Wilhelm Michaelsen
Wilhelm Michaelsen
449 Points
Wilhelm Michaelsen
Wilhelm Michaelsen
449 Points 
for (int i = 0; i < [yourArray count]; i++) {
    if (yourString == yourArray[i] {
        yourString = yourSecondArray[i];
    }
}

This loops through the first array and checks if the string equals something in the first array. If it does match some index it is set to the same index in the second array. This should solve your problem. Tell me if it doesn't!

Tom Coomer
Tom Coomer
1,331 Points

the if statement does not seem to be detecting the string match. Should the array value of "yourArray" be converted into a string?

Wilhelm Michaelsen
Wilhelm Michaelsen
449 Points

sorry I only put one = in the if statement, it should be == (2x). If all your elements in your array are strings you should not have to convert them to a string if they already are.

Tom Coomer
Tom Coomer
1,331 Points
Tom Coomer
Tom Coomer
1,331 Points

That is working now. Thanks I have just changed it so the string is the value of a textfield (textfield.text) and it is not recognising it. Do you know why this would be? Below is the code.

    myString = myTextField.text;

    for (int i = 0; i < [array1 count]; i++) {

        if (myString == array1[i]) {
            myString = array2[i];
        }
            }

    NSLog(myString);
Wilhelm Michaelsen
Wilhelm Michaelsen
449 Points

Is the problem that it doesn't recognize the textfields value?

Tom Coomer
Tom Coomer
1,331 Points

It recognises it if I write:

NSLog(myString);

But not if I use it as the string to compare.

Wilhelm Michaelsen
Wilhelm Michaelsen
449 Points

If you NSLOG(myString); inside the if statement before the mystring = array2[i]; what does it log?

Tom Coomer
Tom Coomer
1,331 Points

It does not log anything.