Why cannot I modify an object inside my method
I am calling an Api asynchronously to get the data. Then I am assigning the data to a shared instance successfully inside a block given below.
RestApiManager *api= [[RestApiManager alloc]init];
[ObjectBuilder sharedManager];
self.obj = [[Object alloc]init];
[api get_data:credential.password finish:^(NSDictionary *data) {
if(data){
self.obj = [ObjectBuilder obj:data];
[[ObjectBuilder sharedManager]setObject:self.obj];
}
This all working as expected except when I try to update some of the values in one of NSMutableDictionary properties of the obj.
- (void)update: (NSInteger) temp {
array3 = [[NSMutableArray alloc]init];
NSNumber *start =[[NSNumber numberWithInteger:var];
[NSNumber numberWithInteger:var2];
NSNumber *temp2 =[NSNumber numberWithInteger:temp];
[array3 addObject:temp2];
[array3 addObject:start];
[array3 addObject:end];
[self.obj.sch setObject:array3 forKey:temp2];
}
[obj.sch setObject:array3 forKey:temp2]; always crashes my app.
Now I have vague idea whats going on, basically I am setting obj inside a block code, whilst in my update function I am trying to change the contents outside block code.
The error I get is
reason: '-[__NSDictionaryI setObject:forKey:]: unrecognized selector sent to instance
Note this error goes away if i declare line
[[ObjectBuilder sharedManager]setObject:obj];
Outside the finish:^ block
But then I lose all the data obtained from api call.
Object is declared as below @interface Object : NSObject
@property (strong, nonatomic) NSMutableDictionary *sch;
objective-c asynchronous objective-c-blocks
asked Nov 16 '18 at 10:51
humble_piehumble_pie
446
|
show 11 more comments
I am calling an Api asynchronously to get the data. Then I am assigning the data to a shared instance successfully inside a block given below.
RestApiManager *api= [[RestApiManager alloc]init];
[ObjectBuilder sharedManager];
self.obj = [[Object alloc]init];
[api get_data:credential.password finish:^(NSDictionary *data) {
if(data){
self.obj = [ObjectBuilder obj:data];
[[ObjectBuilder sharedManager]setObject:self.obj];
}
This all working as expected except when I try to update some of the values in one of NSMutableDictionary properties of the obj.
- (void)update: (NSInteger) temp {
array3 = [[NSMutableArray alloc]init];
NSNumber *start =[[NSNumber numberWithInteger:var];
[NSNumber numberWithInteger:var2];
NSNumber *temp2 =[NSNumber numberWithInteger:temp];
[array3 addObject:temp2];
[array3 addObject:start];
[array3 addObject:end];
[self.obj.sch setObject:array3 forKey:temp2];
}
[obj.sch setObject:array3 forKey:temp2]; always crashes my app.
Now I have vague idea whats going on, basically I am setting obj inside a block code, whilst in my update function I am trying to change the contents outside block code.
The error I get is
reason: '-[__NSDictionaryI setObject:forKey:]: unrecognized selector sent to instance
Note this error goes away if i declare line
[[ObjectBuilder sharedManager]setObject:obj];
Outside the finish:^ block
But then I lose all the data obtained from api call.
Object is declared as below @interface Object : NSObject
@property (strong, nonatomic) NSMutableDictionary *sch;
objective-c asynchronous objective-c-blocks
asked Nov 16 '18 at 10:51
humble_piehumble_pie
446
1
And what's the error message? What I don't understand is what isobjon that line? Because in the code before, it's a local var.
– Larme
Nov 16 '18 at 12:56
@Larme I updated the code, and error I am getting and also added the line which explains when the error disappears, but I lose the data.
– humble_pie
Nov 16 '18 at 14:15
2
__NSDictionaryImeansNSImmutableDictionary(that's why there is an uppercase "i" at the end), in other words, aNSDictionary, not aNSMutableDictionary.
– Larme
Nov 16 '18 at 14:26
1
If you have a new issue, post a new question with clear and specific details. And you may as well delete this question.
– rmaddy
Nov 16 '18 at 16:41
1
My comment wasn't actaually an attenpt to fix your issue, only additional information. Please follow rmaddys advice and create a new question for the new issue.
– Julian F. Weinert
Nov 17 '18 at 18:38
|
show 11 more comments
I am calling an Api asynchronously to get the data. Then I am assigning the data to a shared instance successfully inside a block given below.
RestApiManager *api= [[RestApiManager alloc]init];
[ObjectBuilder sharedManager];
self.obj = [[Object alloc]init];
[api get_data:credential.password finish:^(NSDictionary *data) {
if(data){
self.obj = [ObjectBuilder obj:data];
[[ObjectBuilder sharedManager]setObject:self.obj];
}
This all working as expected except when I try to update some of the values in one of NSMutableDictionary properties of the obj.
- (void)update: (NSInteger) temp {
array3 = [[NSMutableArray alloc]init];
NSNumber *start =[[NSNumber numberWithInteger:var];
[NSNumber numberWithInteger:var2];
NSNumber *temp2 =[NSNumber numberWithInteger:temp];
[array3 addObject:temp2];
[array3 addObject:start];
[array3 addObject:end];
[self.obj.sch setObject:array3 forKey:temp2];
}
[obj.sch setObject:array3 forKey:temp2]; always crashes my app.
Now I have vague idea whats going on, basically I am setting obj inside a block code, whilst in my update function I am trying to change the contents outside block code.
The error I get is
reason: '-[__NSDictionaryI setObject:forKey:]: unrecognized selector sent to instance
Note this error goes away if i declare line
[[ObjectBuilder sharedManager]setObject:obj];
Outside the finish:^ block
But then I lose all the data obtained from api call.
Object is declared as below @interface Object : NSObject
@property (strong, nonatomic) NSMutableDictionary *sch;
objective-c asynchronous objective-c-blocks
asked Nov 16 '18 at 10:51
humble_piehumble_pie
446
I am calling an Api asynchronously to get the data. Then I am assigning the data to a shared instance successfully inside a block given below.
RestApiManager *api= [[RestApiManager alloc]init];
[ObjectBuilder sharedManager];
self.obj = [[Object alloc]init];
[api get_data:credential.password finish:^(NSDictionary *data) {
if(data){
self.obj = [ObjectBuilder obj:data];
[[ObjectBuilder sharedManager]setObject:self.obj];
}
This all working as expected except when I try to update some of the values in one of NSMutableDictionary properties of the obj.
- (void)update: (NSInteger) temp {
array3 = [[NSMutableArray alloc]init];
NSNumber *start =[[NSNumber numberWithInteger:var];
[NSNumber numberWithInteger:var2];
NSNumber *temp2 =[NSNumber numberWithInteger:temp];
[array3 addObject:temp2];
[array3 addObject:start];
[array3 addObject:end];
[self.obj.sch setObject:array3 forKey:temp2];
}
[obj.sch setObject:array3 forKey:temp2]; always crashes my app.
Now I have vague idea whats going on, basically I am setting obj inside a block code, whilst in my update function I am trying to change the contents outside block code.
The error I get is
reason: '-[__NSDictionaryI setObject:forKey:]: unrecognized selector sent to instance
Note this error goes away if i declare line
[[ObjectBuilder sharedManager]setObject:obj];
Outside the finish:^ block
But then I lose all the data obtained from api call.
Object is declared as below @interface Object : NSObject
@property (strong, nonatomic) NSMutableDictionary *sch;
objective-c asynchronous objective-c-blocks
objective-c asynchronous objective-c-blocks
asked Nov 16 '18 at 10:51
humble_piehumble_pie
446
asked Nov 16 '18 at 10:51
humble_piehumble_pie
446
edited Nov 16 '18 at 14:34
humble_pie
asked Nov 16 '18 at 10:51
humble_piehumble_pie
446
asked Nov 16 '18 at 10:51
humble_piehumble_pie
446
asked Nov 16 '18 at 10:51
humble_piehumble_pie
446
446
1
And what's the error message? What I don't understand is what isobjon that line? Because in the code before, it's a local var.
– Larme
Nov 16 '18 at 12:56
@Larme I updated the code, and error I am getting and also added the line which explains when the error disappears, but I lose the data.
– humble_pie
Nov 16 '18 at 14:15
2
__NSDictionaryImeansNSImmutableDictionary(that's why there is an uppercase "i" at the end), in other words, aNSDictionary, not aNSMutableDictionary.
– Larme
Nov 16 '18 at 14:26
1
If you have a new issue, post a new question with clear and specific details. And you may as well delete this question.
– rmaddy
Nov 16 '18 at 16:41
1
My comment wasn't actaually an attenpt to fix your issue, only additional information. Please follow rmaddys advice and create a new question for the new issue.
– Julian F. Weinert
Nov 17 '18 at 18:38
|
show 11 more comments
1
And what's the error message? What I don't understand is what isobjon that line? Because in the code before, it's a local var.
– Larme
Nov 16 '18 at 12:56
@Larme I updated the code, and error I am getting and also added the line which explains when the error disappears, but I lose the data.
– humble_pie
Nov 16 '18 at 14:15
2
__NSDictionaryImeansNSImmutableDictionary(that's why there is an uppercase "i" at the end), in other words, aNSDictionary, not aNSMutableDictionary.
– Larme
Nov 16 '18 at 14:26
1
If you have a new issue, post a new question with clear and specific details. And you may as well delete this question.
– rmaddy
Nov 16 '18 at 16:41
1
My comment wasn't actaually an attenpt to fix your issue, only additional information. Please follow rmaddys advice and create a new question for the new issue.
– Julian F. Weinert
Nov 17 '18 at 18:38
1
1
And what's the error message? What I don't understand is what is
obj on that line? Because in the code before, it's a local var.– Larme
Nov 16 '18 at 12:56
And what's the error message? What I don't understand is what is
obj on that line? Because in the code before, it's a local var.– Larme
Nov 16 '18 at 12:56
@Larme I updated the code, and error I am getting and also added the line which explains when the error disappears, but I lose the data.
– humble_pie
Nov 16 '18 at 14:15
@Larme I updated the code, and error I am getting and also added the line which explains when the error disappears, but I lose the data.
– humble_pie
Nov 16 '18 at 14:15
2
2
__NSDictionaryI means NSImmutableDictionary (that's why there is an uppercase "i" at the end), in other words, a NSDictionary, not a NSMutableDictionary.– Larme
Nov 16 '18 at 14:26
__NSDictionaryI means NSImmutableDictionary (that's why there is an uppercase "i" at the end), in other words, a NSDictionary, not a NSMutableDictionary.– Larme
Nov 16 '18 at 14:26
1
1
If you have a new issue, post a new question with clear and specific details. And you may as well delete this question.
– rmaddy
Nov 16 '18 at 16:41
If you have a new issue, post a new question with clear and specific details. And you may as well delete this question.
– rmaddy
Nov 16 '18 at 16:41
1
1
My comment wasn't actaually an attenpt to fix your issue, only additional information. Please follow rmaddys advice and create a new question for the new issue.
– Julian F. Weinert
Nov 17 '18 at 18:38
My comment wasn't actaually an attenpt to fix your issue, only additional information. Please follow rmaddys advice and create a new question for the new issue.
– Julian F. Weinert
Nov 17 '18 at 18:38
|
show 11 more comments
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1
And what's the error message? What I don't understand is what is
objon that line? Because in the code before, it's a local var.– Larme
Nov 16 '18 at 12:56
@Larme I updated the code, and error I am getting and also added the line which explains when the error disappears, but I lose the data.
– humble_pie
Nov 16 '18 at 14:15
2
__NSDictionaryImeansNSImmutableDictionary(that's why there is an uppercase "i" at the end), in other words, aNSDictionary, not aNSMutableDictionary.– Larme
Nov 16 '18 at 14:26
1
If you have a new issue, post a new question with clear and specific details. And you may as well delete this question.
– rmaddy
Nov 16 '18 at 16:41
1
My comment wasn't actaually an attenpt to fix your issue, only additional information. Please follow rmaddys advice and create a new question for the new issue.
– Julian F. Weinert
Nov 17 '18 at 18:38