How to call NSString from json to UIAlertView? - ios

Question

I would like to pass some values from json to a message of UIAlertView. I have some codes
- (void)jsonParse{
NSString* path = #"http://phdprototype.tk/getResultData.php";
NSURL* url = [NSURL URLWithString:path];
NSString* jsonString = [[NSString alloc]initWithContentsOfURL:url encoding:NSUTF8StringEncoding error:nil];
NSData* jsonData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary* dic = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableLeaves error:nil];
NSDictionary* resultDic = [dic objectForKey:#"maxid"];
NSString* recData = [resultDic objectForKey:#"recommendData"];
NSString* rData = [resultDic objectForKey:#"room"];
NSString* lData = [resultDic objectForKey:#"level"];
}
- (void)locationView
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle: #"Recommendation"
message:[NSString stringWithFormat:#"OK! There is another collection which located at room %# in level %#."]
delegate: self
cancelButtonTitle: nil
otherButtonTitles: #"GO", nil];
[alert show];
}
As I know, I have to do something in
message:[NSString stringWithFormat:#"OK! There is another collection which located at room %# in level %#."]. However, I have no idea how to do it. Can someone tell me how to pass the values of lData and rData to the message of uialertview??

Answer 1

You can make a global NSString variable which defines you message
In .h file
NSString *message;
In jsonParse method
- (void)jsonParse {
//Your Stuff
message = [NSString stringWithFormat:#"OK! There is another collection which located at room %# in level %#", lData, rData];
}
and then in your UIAlertView
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Recommendation"
message:message
delegate:self
cancelButtonTitle:nil
otherButtonTitles:#"GO", nil];
[alert show];

Answer 2

- (void)jsonParse{
//your code
[self locationViewWithRoom:rData level:lData];
}
- (void)locationViewWithRoom:(NSString *)room level:(NSString *)level
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle: #"Recommendation"
message:[NSString stringWithFormat:#"OK! There is another collection which located at room %# in level %#.", room, level]
delegate: self
cancelButtonTitle: nil
otherButtonTitles: #"GO", nil];
[alert show];
}

Answer 3

UIAlertView *alert = [[UIAlertView alloc] initWithTitle: #"Recommendation"
message:[NSString stringWithFormat:#"OK! There is another collection which located at room %# in level %#.", iData, rData]
delegate: self
cancelButtonTitle: nil
otherButtonTitles: #"GO", nil];
Just write the values after you write the argument for stringWithFormat. The number of your arguments should match with the number of %#s used in argument string, and your arguments should be comma separated, otherwise you will get a build error.

Answer 4

Declare both the variables (rData & lData) globally (means, in your interface) and then use it like this
UIAlertView *alert = [[UIAlertView alloc] initWithTitle: #"Recommendation"
message:[NSString stringWithFormat:#"OK! There is another collection which located at room %# in level %#.",lData,rData]
delegate: self
cancelButtonTitle: nil
otherButtonTitles: #"GO", nil];

Answer 5

Its actually pretty easy. You are doing right just few things are missing.
Declare rData & lData as properties in your class,
#interface <classname>
#propert (nonatomic,strong) NSString *lData;
#propert (nonatomic,strong) NSString *rData;
#end
Then your string can be formed using,
[NSString stringWithFormat:#"OK! There is another collection which located at room %# in level %#.", lData, rData];
This should resolve your issue.