다음 코드의 EXC_BAD_ACCESS 예외

Question

NSMutableArray *quesArrayForPar0 = [[NSMutableArray alloc] initWithObjects: 

[[NSMutableArray alloc] initWithObjects:@"We have a clearly stated vision for the next 5 years.", "-1", nil], 

[[NSMutableArray alloc] initWithObjects:@"Our organization has clearly established strategy to achieve the vision.", "-1", nil], 

[[NSMutableArray alloc] initWithObjects:@"This strategy is implemented uniformly and effectively throughout our organization.", "-1", nil], 

[[NSMutableArray alloc] initWithObjects:@"We are progressing as per our plan to realize this vision within the envisage time horizon.", "-1", nil] 

, nil]; 

위의 코드가 예외를 던지고있는 이유는 무엇입니까?

Answer 1

내부 가변 배열에서 두 개의 다른 객체를 할당했기 때문에. 하나는 Obj-C 문자열 @""이고 다른 C 문자열은 ""입니다.

그래서 코드와 작동이 변경되었습니다.

NSMutableArray *quesArrayForPar0 = [[NSMutableArray alloc] initWithObjects: 
            [[NSMutableArray alloc] initWithObjects:@"We have a clearly stated vision for the next 5 years.", @"-1", nil], 
            [[NSMutableArray alloc] initWithObjects:@"Our organization has clearly established strategy to achieve the vision.", @"-1", nil], 
            [[NSMutableArray alloc] initWithObjects:@"This strategy is implemented uniformly and effectively throughout our organization.", @"-1", nil], 
            [[NSMutableArray alloc] initWithObjects:@"We are progressing as per our plan to realize this vision within the envisage time horizon.", @"-1", nil] 
            , nil];