分配内存泄漏

Question

我是一名初学者，但仍在试图弄清楚如何阅读此内容。 有 3 个自定义视图，一开始我分配第一个。 然后第二个/释放第一个，然后第三个/释放第二个。

我在释放每个视图之前清空/清空所有数组，所以从我所看到的，每次分配视图时保留的所有内存都应该在我释放/清空它们时释放，但在图中它不断增加，我不'根本看不到任何东西被释放。

应该是这样的吗？我将代表、数组、字典等一切都归零。

-(void)firstTOsecond {

[self.first removeFromSuperview];
self.first.delegate = nil;
self.first = nil;


self.second = [[Second alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
[self.view addSubview:self.second];
self.second.delegate = self;}

-(void)secondTOthird {

[self.second removeFromSuperview];
self.second.delegate = nil;
self.second = nil;


self.third = [[Third alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
[self.view addSubview:self.third];
self.third.delegate = self;}

编辑

在 First.m / Second.m / Third.m 中

-(instancetype)initWithFrame:(CGRect)frame {
self = [super initWithFrame:frame];
if (self) {
    self.buttonStartFrame = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"buttonStartFrame"]];
    [self addSubview:self.buttonStartFrame];
    self.buttonStartFrame.userInteractionEnabled = YES;
    self.buttonStartButton = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"buttonStartDefault"]];
    [self.buttonStartFrame addSubview:self.buttonStartButton];
    self.buttonStartButton.userInteractionEnabled = YES;
    self.labelStart = [[UILabel alloc]init];
    [self.buttonStartButton addSubview:self.labelStart];
    self.labelStart.textColor = [UIColor darkGrayColor];
    self.labelStart.text = @"Start";
    }
return self;}

Answer 1

内存泄漏可能是您在更新视图元素时不断创建新视图元素。您可以创建辅助方法来避免分配新视图，并改为在主线程上更新视图元素

- (void)limitedUpdateTextColorView:(NSDictionary *)somethingCache {
    self.labelStart.textColor = [somethingCache valueForKey:@"bar"];
    self.labelStart.text = [somethingCache valueForKey:@"foo"];
}