我包括完整的项目,所以没有什么不明确的。iOS应用程序崩溃与EXC_BAD_ACCESS
A.H
#import <Foundation/Foundation.h>
@interface A : NSObject
-(void) zero;
@end
A.M
#import "A.h"
@implementation A
#define width 3
#define height 3
uint8_t** _board;
-(void) zero
{
for(int i = 0; i < width; i++)
for(int j = 0; j < height; j++)
_board[i][j] = 0;
}
-(void)dealloc
{
for(int i = 0; i < width; i++)
free(_board[i]);
free(_board);
}
-(id) init
{
self = [super init];
if(self)
{
_board = malloc(sizeof(uint8_t*)*width);
for(int i = 0; i < width; i++)
_board[i] = malloc(sizeof(uint8_t)*height);
}
return self;
}
@end
ViewController.h
#import <UIKit/UIKit.h>
@interface ViewController : UIViewController
@end
ViewController.m
#import "ViewController.h"
#import "A.h"
@implementation ViewController
A* _gameBoard;
- (void)viewDidLoad
{
[super viewDidLoad];
_gameBoard = [[A alloc] init];
[[A alloc] init];
[_gameBoard zero];
}
@end
具体来说,当设置_board时,程序在函数零中崩溃。我还想指出,如果从ViewController的实现中删除
[[A alloc] init];
程序不会崩溃。感谢任何帮助,提前。
'_gameBoard = [[A alloc] init]; [[A alloc] init];'这很奇怪alloc-init两次 –