NSMutableDictionary *mutableDict = [NSMutableDictionary dictionaryWithDictionary: #{ #"Maruti":#[#"m1",#"m2"], #"Hyundai":#[#"h1",#"h2"] } ];
How can I add values in value array of each key so that my output would look like:
Maruti:[m1,m2,m3] Hyundai:[h1,h2,h3]
Both Maruti and hyundai dictionary are NSDictionary so you cannot add any new values into them , plus you cannot use any of them outside of the scope of this method, but if you still want to do something like this you can go with this.
NSMutableDictionary * tempDict = [[NSMutableDictionary alloc]init];
[tempDict setValue:#"5" forKey:#"number"];
[tempDict setValue:#"6" forKey:#"Hidden"];
NSMutableDictionary *tempDict2 = [[NSMutableDictionary alloc]init];
[tempDict setValue:#"5" forKey:#"number"];
[tempDict setValue:#"6" forKey:#"Hidden"];
NSMutableDictionary *mutableDict=[[NSMutableDictionary alloc] init];
[mutableDict setValue:tempDict forKey:#"Dict 1"];
[mutableDict setValue:tempDict2 forKey:#"Dict 2"];
Related
I am trying to show the User different Phone Numbers on Apple Watch and he clicks on one than phone call alert should appear. I'll do it like this but the Alert is just dismissed without call action:
NSMutableArray *tempArray = [[NSMutableArray alloc] initWithCapacity:0];
WKExtension *myExt = [WKExtension sharedExtension];
for (NSString *phone in arr) {
NSString *tel = [NSString stringWithFormat:#"tel:%#",phone];
WKAlertAction *act = [WKAlertAction actionWithTitle:tel style:WKAlertActionStyleDefault handler:^(void){
[myExt openSystemURL:[NSURL URLWithString:phone1]];
}];
[tempArray addObject:act];
}
NSString *titleMessage = #"Call";
NSString *textMessage = #"Please select the number you want to call.";
NSString *cancel = #"Cancel";
WKAlertAction *act = [WKAlertAction actionWithTitle:cancel style:WKAlertActionStyleDestructive handler:^(void){
}];
[tempArray addObject:act];
[self presentAlertControllerWithTitle:titleMessage message:textMessage preferredStyle:WKAlertControllerStyleAlert actions:tempArray];
Buttons are shown as expected and the Handler is also called with the correct Phone Number. But it does not openSystemURL. Does somebody know why and how to fix? Thanks!
I think you forgot to add "tel" scheme ,Use below code :
[WKAlertAction actionWithTitle:#"tel" style:WKAlertActionStyleDefault handler:^(void){
[[WKExtension sharedExtension]openSystemURL:[NSURL URLWithString:[NSString stringWithFormat:#"tel:%#",#"YOUR NUMBER"]]];
}];
About Apple URL Schemes
componentsSeparatedByString: of NSString is nice, but this time I need it to include also the components. So a hypothetic
NSArray* array = [#",hello,world,kominami," componentsSeparatedByAndIncludingString:#","];
would give me an array with components
,
hello
,
world
,
kominami
,
Is there any such thing?
What action are you attempting to perform with this method?
There are a couple of ways to address that, but you could start with an array literal, but that is immutable:
NSArray *strings = #[ #[ #"A", #"B", #"C" ], #[ #"D", #"E", #"F" ], #[ #"G", #"H", #"I" ] ];
However I would look at a mutable array to perform this.
NSMutableArray *strings = [NSMutableArray array];
for(int i = 0; i < DESIRED_MAJOR_SIZE; i++)
{
[strings addObject: [NSMutableArray arrayWithObject:#""
count:DESIRED_MINOR_SIZE]];
}
Ok, so I would like to create an NSDictionary, but the pointer should be followed by the value of an NSString that has been put in by the user. Is this possible? I imagine it would be something along the lines of this...
someNSString = _someTextField.text;
NSDictionary * {someNSString} = [NSDictionary dictionaryWithObjectsAndKeys:
[NSNumber numberWithInt:someUnimportantVariable], #"someUnimportantKey",...nil]
Thanks in advance, I realize that this is either completely not possible or there is a pretty simple solution. Either way, I'm sorry if I wasted your time.
you could try creating a "dictionary of dictionaries". something to the effect of:
someNSString = _someTextField.text;
NSDictionary *myDictionary = [[NSDictionary alloc] init];
[myDictionary setObject:[NSDictionary dictionaryWithObjectsAndKeys: [NSNumber numberWithInt:someUnimportantVariable], #"someUnimportantKey",...nil] forKey:someNSString];
and if you wanted to get back that dictionary
NSDictionary someNSStringDictionary = [myDictionary objectForKey:someNSString];
let me know if it helps in any way.
My eyes hurt from hours of trying to figure this one - and i have looked for an answer for quite a while on-line (it will be embarrassing to tell how much...).
all i am trying to do is to enumerate using a for-in loop on anExpression which is a NSMutableArray that holds NSNumbers and NSStrings.
my NSLog print for the variable ans returns an empty string.
What am i doing wrong?
NSString *ans = #"";
for (id obj in anExpression)
{
if ([obj isKindOfClass:[NSString class]])
[ans stringByAppendingString:(NSString *)obj];
if ([obj isKindOfClass:[NSNumber class]])
[ans stringByAppendingString:(NSString *)[obj stringValue]];
NSLog(#"String so far: %# ", ans);
}
I think you mean
ans = [ans stringByAppendingString:(NSString *)obj];
not just
[ans stringByAppendingString:(NSString *)obj];
NSStrings are immutable -- you can't append to them. -stringByAppendingString: returns a new string (which you could then assign to ans).
Alternatively, you might use an NSMutableString and the -appendString: method.
Hey, sorry for the bad coding format, posting it again ...
NSString *ans = #"";
for (id obj in anExpression)
{
if ([obj isKindOfClass:[NSString class]])
[ans stringByAppendingString:(NSString *)obj];
if ([obj isKindOfClass:[NSNumber class]])
[ans stringByAppendingString:(NSString *)[obj stringValue]];
NSLog(#"String so far: %# ", ans);
}
[ans autorelease];
NSLog(#"final string is: %# ", ans);
return ans;
the method stringByAppendingString: returns a new string made by appending the given string to the receiver.
so you want ans = [ans stringByAppendingString:obj];
I want to trim the file extension from text I have an NSMutableArray in table cells.
NSMutableArray *theFiles = [NSMutableArray new];
NSFileManager *manager = [NSFileManager defaultManager];
NSArray *fileList = [manager directoryContentsAtPath:#"/Test"];
for (NSString *s in fileList){
[theFiles addObject:fileList];
}
cell.textLabel.text = theFiles[indexPath.row];
return cell;
This lists for example "Xylophone.m4r" I want to remove the .m4r.
Try -[NSString stringByDeletingPathExtension] (in NSPathUtilities.h).
Actually, for my use, I was able to create a plist programmatically and just not use an extension and it works great! However, anothe rway to do this is:
[string stringByReplacingOccurrencesOfString:#".fileextension" withString:#""];
Just have to delete path extension component:
cell.textLabel.text = [[theFiles objectAtIndex:indexPath.row] stringByDeletingPathExtension];