NSMutableArray 循环泄漏

Question

我正在使用仪器来查找内存泄漏，它发现了很多！ 但我不知道如何解决它。

@property(nonatomic, retain) NSMutableArray *wycategories;
...
...
self.wycategories = [[NSMutableArray alloc]init];
...
...
for (CXMLElement *node in nodes) {      
    //Instruments say that here there are a lots of memory leaks
    WaiYahCategory *wycategory = [[WaiYahCategory alloc] init];

    wycategory.text = [[node childAtIndex:0] stringValue];
    wycategory.idCategory = [[node attributeForName:@"id"] stringValue];
    wycategory.desc = [[node attributeForName:@"desc"] stringValue];
    wycategory.icon = [[node attributeForName:@"icon"] stringValue];

    [self.wycategories addObject:wycategory];
    [wycategory release];
}

Answer 1

由于wycategories有一个retain属性，你必须在赋值后释放数组。

NSMutableArray *array = [[NSMutableArray alloc]init];
self.wycategories = array; // <- The property retains the array
[array release];