Display NSMutableArray in UIlabel in xcode - iphone

Question

I have to display NSmutableArray data in UIlabel .But only the last index text is getting added .Here is my code
marray:
(
{
ID=1;
}
{
ID="2"
}
)
for(int i=0;i<[marray count];i++)
{
eventName=[[arr2 objectAtIndex:i]objectForKey:#"Code"];
label.text=[NSString stringWithFormat:#"ID :%#",eventName ];
}
I have to display these ID's in UIlabel with text as : 1 , 2
How can I do it?

Answer 1

you can append string to NSString object than use that object in label like bellow
NSMutableString *lblstr=#"ID :";
for (int i=0; i<[marray count]; i++) {
eventName=[[arr2 objectAtIndex:i]objectForKey:#"Code"];
[lblstr appendString:[NSString stringWithFormat:#"%#",eventName ]];
}
label.text=lblstr;

Answer 2

You are running a for loop which will continue executing till its last increment . So the last value in the array would be displayed. So what you can do is that you can add a timer instead of a for loop that is if you want to show your NSmutableArray as changing in the UILabel.
EDIT:
-(IBAction) rotate3
{
NSString *number = [self.dayArray description];
NSArray *array = [[NSArray alloc] initWithObjects: #"0", #"1", #"2", #"3", #"4", #"5" ,#"6", #"7", #"8",#"9",#"10",#"11",#"12",#"13", #"14", #"15", #"16", #"17", #"18", #"19",nil];
numberCount++;
timer=[NSTimer scheduledTimerWithTimeInterval:5.0 target:self selector:#selector(rotate3 )userInfo:nil repeats:YES];
self.dayArray = array;
[array release];
label.text = [NSString stringWithFormat:#"Day %# ", number];
}
Also check these links How to update UILabel programmatically in iOS and How to display an NSArray in a UILabel and use timer

Answer 3

Try the below Code.
NSString *temp=#"";
for(int i=0;i<[marray count];i++)
{
//eventName=[[arr2 objectAtIndex:i]objectForKey:#"Code"];
temp=[temp stringByAppendingString:[[arr2 objectAtIndex:i]objectForKey:#"Code"]];
temp=[temp stringByAppendingString:#" ,"];
}
temp = [temp substringToIndex:[temp length]-1];
label.text=[NSString stringWithFormat:#"ID :%#",temp ];

Answer 4

NSMutableString *str = [[NSMutableString alloc] init];
for(int i=0;i<[marray count];i++)
{
NSString *temp = [NSString stringWithFormat:#"%d - %#\n",i+1, [[arr2 objectAtIndex:i]objectForKey:#"Code"]];
[str appendString:[NSString stringWithFormat:#"%#",temp]];
//sleep(0.05); //Remove comment this line may help ! **Tricky Line**
}
label.text = str;
[str release];

Answer 5

You may create an array of objects (indexes) and use componentsJoinedByString:
NSString* str = [array componentsJoindeByString: #", "];
Or using your code, replacing
label.text=[NSString stringWithFormat:#"ID :%#",eventName ];
with:
label.text=[label.text stringByAppendingFormat:#", %#", eventName];