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iPhone 内存释放注意事项两则(转自cocoachina)

2010-11-20 11:30:58| 分类： objective c | 标签： |举报 |字号大中小订阅

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iPhone内存管理中，涉及到malloc在堆上分配内存时，需要使用对应的free释放堆内存，而不是单纯的release相关的对象了事，如下代码： @interface MemoryTestProjViewController : UIViewController { @publ

iPhone内存管理中，涉及到malloc在堆上分配内存时，需要使用对应的free释放堆内存，而不是单纯的release相关的对象了事，如下代码：

@interface MemoryTestProjViewController : UIViewController {
@public
NSMutableArray * memoryArray;
}

@end

@interface MemoryTestProjItem : NSObject
{
@public
char * innerItem;
}
@end

在进行初始化时为innerItem指针在堆空间上分配内存，但是要记得调用free函数进行堆空间的释放，代码如下：
- (void)viewDidUnload {
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;

memoryArray = [[NSMutableArray alloc] initWithCapacity:10];
for(int i = 0;i < 1024;i++)
{
     MemoryTestProjItem* item = [[MemoryTestProjItem alloc] init];
     item->innerItem = (char*)malloc(1024);
     [memoryArray addObject:item];
     [item release];
     free(item->innerItem);
     free(item);
}
[memoryArray removeAllObjects];
}

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