how to append string in global variable of string in objective c

Question

I have created global string in app delegate class and append strings in that string in multiple classes as my application control moves but i m getting only last appended string.

@property (nonatomic , strong) NSString *strConacatResponse;

in appdelegate.m

self.strConacatResponse = [self.strConacatResponse stringByAppendingString:[NSString stringWithFormat:@"Name : %@ ",name]];

then in another classes

NSString *strDates = [NSString stringWithFormat:@"\n Common utilities not expire *** EndDate: %@ *** StartDate: %@ ",paramEndDate,paramStartDate];


    [AppDelegate sharedAppDelegate].strConacatResponse =  [[AppDelegate sharedAppDelegate].strConacatResponse stringByAppendingString:strDates];

in my 3rd class

 NSString *strTemp = @" \n Database getSuscriptionStatus error in api calling of apple   ";
    [AppDelegate sharedAppDelegate].strConacatResponse = [[AppDelegate sharedAppDelegate].strConacatResponse stringByAppendingString:strTemp];

but getting only last string

What do you mean by last string? Could please tell what exact string you're getting? — TheTiger
– TheTiger, Commented May 1, 2018 at 12:26

Kuldeep Tanwar · Accepted Answer · 2018-05-02 14:30:00Z

1

You need to initialize the self.strConacatResponse First in you appDelegate and Use an NSMutableString while declaring the variable.

First step would be (IN appDelegate) :-

self.strConacatResponse=[NSString stringWithFormat:@"Name : %@ ",name];

Then append the strings as usual

edited May 2, 2018 at 14:30

answered May 1, 2018 at 12:29

Kuldeep Tanwar

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Comments

Saifan Nadaf · Accepted Answer · 2018-05-03 11:10:40Z

Declare the property variable as NSMutableString

@property (nonatomic , strong) NSMutableString *strConacatResponse;

in appdelegate.m

self.strConacatResponse=[[NSMutableString alloc]init];
self.strConacatResponse = [NSString stringWithFormat:@"Name : %@ ",name];

then in second classes

NSString *strDates = [NSString stringWithFormat:@"\n Common utilities not expire *** EndDate: %@ *** StartDate: %@ ",paramEndDate,paramStartDate];

 [AppDelegate sharedAppDelegate].strConacatResponse = [NSString stringWithFormat:@"%@ %@ ",[AppDelegate sharedAppDelegate].strConacatResponse,strDates ];

in Third class

NSString *strTemp = @" \n Database getSuscriptionStatus error in api calling of apple   ";


[AppDelegate sharedAppDelegate].strConacatResponse = [NSString stringWithFormat:@"%@ %@ ",[AppDelegate sharedAppDelegate].strConacatResponse,strTemp];

koen · Accepted Answer · 2018-05-01 15:56:13Z

0

Your string needs to be mutable to be able to append new strings:

@property (nonatomic , strong) NSMutableString *strConacatResponse;

Then (for instance) in AppDelegate:

strConacatResponse = [NSMutableString new];

And now you can add more strings to it.

edited May 1, 2018 at 15:56

answered May 1, 2018 at 15:07

koen

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Comments

battlmonstr · Accepted Answer · 2018-05-01 22:08:43Z

0

Just want to point existing logging APIs, because it seems that you're trying to achieve some sort of logging: os_log, NSLog, CocoaLumberjack. Those are battle-proven APIs, so depending on your needs it might be a better option to not reinvent the wheel.

answered May 1, 2018 at 22:08

battlmonstr

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