Not creating a new instance of NSMutableDictionary when passing to another class - ios

Question

i have an NSMutableDictionary declared in a class but i want to print get access to the contents of it in another class for example
#interface MyClass0 : NSObject
{
}
#property (nonatomic, strong) NSMutableDictionary *valuee;
#end
and in implementation i do
#implementation MyClass0
- (void)viewDidLoad{
[super viewDidLoad];
[valuee setObject:#"name" forKey:#"Aryan"];
}
#end
Now i create a new class called MyClass1 where i want to access these
#interface MyClass1 : NSObject
{
}
#property (nonatomic, strong) NSMutableDictionary *dict;
#end
and the implementation
#implementation MyClass1
#synthesize dict;
- (void)viewDidLoad{
[super viewDidLoad];
self.dict = [[NSMutableDictionary alloc] init];
MyClass0 *c = [[MyClass0 alloc] init];
self.dict = c.valuee;
// dict is not nil but the contents inside is nil so it clearly creates a new instance
}
#end

Answer 1

You are creating the instance of MyClass0 and valuee is declared but not initialized.
The closest solution to your code is
MyClass0 *c = [[MyClass0 alloc] init];
c.valuee = [[NSMutableDictionary alloc] init];
self.dict = c.valuee;
If a value is assigned to a declared property then an explicit initialization is not necessary.

Answer 2

If it's just a simple NSMutableDictionary that has the same contents every time you can create a class method in MyClass0 like so:
+ (NSMutableDictionary *) getDict {
NSMutableDictionary *dict = [[NSMutableDictionary alloc] init];
[dict setObject:#"name" forKey:#"Aryan"];//did you mean [dict setObject:#"Aryan" forKey:#"name"]?
return dict;
}
To access this, declare the method in the MyClass0.h file like so: + (NSMutableDictionary *) getDict; and simply call [MyClass0 getDict]; in your MyClass1.m file.
If it doesn't have the same contents every time, you'll have to pass the dictionary forward to each view controller in prepareForSegue:
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
// Make sure your segue name in storyboard is the same as this next line
if ([[segue identifier] isEqualToString:#"MySegue"]) {
MyClass1 *mc = [segue destinationViewController];
mc.dict = self.valuee;
}
}