NSMutableArray 在运行时崩溃
当尝试访问正确加载的 NSMutable 数组时，我在运行时发生崩溃。 这是代码
NSMutableArray *gameItems;
-(id) init
{
if( (self=[super init])) {
//initialize array
gameItems = [NSMutableArray array];
for(int i = 0; i < 3; i++)
{
GI *gameItem = [[GI alloc] init];
gameItem.image = [[CCSprite alloc] initWithFile:@"triangle.png"];
gameItem.Position = ccp(140+40*i,200);
[gameItems addObject:gameItem];
[gameItem release];
NSLog(@"%d",[gameItems count]); //SHOWS THE SIZE OF THE ARRAY INCREMENTING CORRECTLY
}
NSLog(@"%d",[gameItems count]); //show " 3 " correct !
for(GI *gameItem in gameItems)
{
[self addChild:gameItem.image];
NSLog(@"%d",[gameItems count]); //show 3 correct !
}
[self schedule:@selector(callEveryFrame:)];
}
return self;
}
- (void) callEveryFrame:(ccTime)dt
{
NSLog(@"----->%d",[gameItems count]); //CRASHES AT RUNTIME IN THIS LINE
}
@end
请有人解释一下为什么会发生这种情况。 NSMutableArray 的自动释放功能可能是问题所在吗？
I'm getting a crash at runtime when try to access an NSMutable array that is correctly loaded.
here is the code
NSMutableArray *gameItems;
-(id) init
{
if( (self=[super init])) {
//initialize array
gameItems = [NSMutableArray array];
for(int i = 0; i < 3; i++)
{
GI *gameItem = [[GI alloc] init];
gameItem.image = [[CCSprite alloc] initWithFile:@"triangle.png"];
gameItem.Position = ccp(140+40*i,200);
[gameItems addObject:gameItem];
[gameItem release];
NSLog(@"%d",[gameItems count]); //SHOWS THE SIZE OF THE ARRAY INCREMENTING CORRECTLY
}
NSLog(@"%d",[gameItems count]); //show " 3 " correct !
for(GI *gameItem in gameItems)
{
[self addChild:gameItem.image];
NSLog(@"%d",[gameItems count]); //show 3 correct !
}
[self schedule:@selector(callEveryFrame:)];
}
return self;
}
- (void) callEveryFrame:(ccTime)dt
{
NSLog(@"----->%d",[gameItems count]); //CRASHES AT RUNTIME IN THIS LINE
}
@end
Please somebody explain me why is this happening.
Could the autorelease feature of the NSMutableArray be the problem?
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（根据请求重新发布）
如果您的数组 gameItems 是一个成员（看起来确实如此），以便能够在其他函数（例如 callEveryFrame）中访问它，那么您肯定需要以这种方式初始化它：
gameItems = [[ NSMutableArray alloc] init];（我认为你错过了分配）
(reposted on request)
If your array gameItems is a member, which it seems it is, to be able to access it in other functions such as callEveryFrame then surely you need to have initialised it in this way:
gameItems = [[NSMutableArray alloc] init];(you missed the alloc I reckon)