How can I show all of objects in NSMutable Array on text field?

Question

I want to show all objects in mutable array on to textfield, label, something else except NSLog

   - (IBAction)purchasePressed:(id)sender {
NSMutableArray *addItem = [[NSMutableArray alloc] init];
[addItem addObject:@"Almond"];
[addItem addObject:@"Choc"];

"number" is my label (I'm not sure that all of Objects in MutableArray can be showed on textfield or not?) i can do it only with NSLog.

for (i = 0;i < [addItem count] ; i++ )
{
   NSLog(@"%@", addItem);
    NSString *test1=(@"%@", addItem);
    number.text=test1;
}

You might want to use the Objective-C for in loop. for (NSString *string in addItem) {} — Kevin
– Kevin, Commented Oct 6, 2013 at 16:14

Wain · Accepted Answer · 2013-10-06 16:10:49Z

2

Every time you set the text of a label you replace the previous text.

Try replacing your whole loop with something like:

number.text = [addItem componentsJoinedByString:@", "];

Which will create a single string from all of the strings in the array and add that to the label. You could do something similar in your loop if you want to.

answered Oct 6, 2013 at 16:10

Wain

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3 Comments

Unheilig Over a year ago

Just curiosity, Wain: What if we had a huge collection of NSStrings, is there an equivalent version of enumerate array using block for this?

Wain Over a year ago

@Unheilig, to do what exactly? A custom concatenation of the strings? NSArray provides enumeration with a block, what you do with it is your choice...

Jr Juve Over a year ago

@Wain Thank you so much, can I ask you more about how could I count all objects in mutableArray?

RFG · Accepted Answer · 2013-10-06 17:34:08Z

1

If you want a string with all the values concatenated:

NSString *mainString = [NSString alloc] init]; 

for (NSString *item in addItem) {

    mainString = [mainString stringByAppendingString:item];
}

number.text = mainString;

EDIT: Using NSMutableString

NSMutableString *mainString = [[NSMutableString alloc] init];

for (NSString *item in addItem) {

    [mainString appendString:item];
}

number.text = mainString;

edited Oct 6, 2013 at 17:34

answered Oct 6, 2013 at 16:15

RFG

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3 Comments

Wain Over a year ago

Would you not use a mutable string?

Jr Juve Over a year ago

I've got error in [mainString appendingString:item]; with no visible @interface for'NSMutableString' declares the selector'appending string:'

RFG Over a year ago

Sorry I've made ane typing error. Use appendString instead appendingString. I've edit my previous answer.

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