@H_502_8@

@H_502_8@

@interface Answer : NSObject {
  NSString *_text;
  NSNumber *_votes;
}

@property(nonatomic,retain) NSString *text;
@property(nonatomic,retain) NSNumber *votes;

+(id)initFromAnswerData:(NSSet *)data;
-(id)initWithText:(NSString *)answer;

@end

实现如下：@H_502_8@

@H_502_8@

#import "Answer.h"
#import "AnswerData.h"
#import "AppDelegate.h"

@implementation Answer

@synthesize text = _text;
@synthesize votes = _votes;


-(id)initWithText:(NSString *)answer {
  if( (self=[super init])) {
    _text = answer;
    _votes = 0;
  }
  return self;
}


@end

如果我使用initWithText：方法在视图控制器中创建一个Answers数组,当我在数组中取一个Answer并尝试找到它的文本值时,我不可避免地会出现EXC_BAD_ACCESS错误.@H_502_8@

但是,如果我初始化一个新的答案,设置文本值,然后将其添加到数组我没有此访问问题.@H_502_8@

所以这会导致问题：@H_502_8@

@H_502_8@

[arrayOfAnswers addObject:[[Answer alloc] initWithText:@"Hello"]];

但这不是：@H_502_8@

@H_502_8@

Answer *newAnswer = [[Answer alloc] initWithText:nil];
newAnswer.text = @"Hello";
[arrayOfAnswers addObject:newAnswer];

有谁能解释为什么？@H_502_8@