iphone - 在 Instruments 中进行分析时 main.m 中的内存泄漏？

Question

在我的其中一个应用程序中，我在 UIKit、UIFoundation 和 QuartzCore 中发生内存泄漏。当我去寻找调用树时，它在 main.m 中显示泄漏。我真的不知道为什么会这样。您可以在下面看到内存泄漏的屏幕截图。

在调用树中

如何解决这个漏洞？

内存泄漏代码

- (void) showCustomPrices
{

int priceValue = 0;
NSArray* priceSplitValue = [btnpriceButton.titleLabel.text componentsSeparatedByString: @"."];
NSString* priceFinal = [priceSplitValue objectAtIndex:0];

for(int i=0;i<[priceArray count];i++)
{ 
    if([[priceArray objectAtIndex:i] isEqualToString:priceFinal]){
        priceValue = i; 
    }
}


    //Assign the cocktail to picker view
    priceActionsheet = [[UIActionSheet alloc] initWithTitle:nil
                                              delegate:self
                                     cancelButtonTitle:nil
                                destructiveButtonTitle:nil
                                     otherButtonTitles:nil];//as we want to display a subview we won't be using the default buttons but rather we're need to create a toolbar to display the buttons on

    [priceActionsheet setActionSheetStyle:UIActionSheetStyleBlackTranslucent];

    CGRect pickerFrame = CGRectMake(0, 40, 0, 0);

    pricePickerview = [[UIPickerView alloc] initWithFrame:pickerFrame];
    pricePickerview.showsSelectionIndicator = YES;
    pricePickerview.dataSource = self;
    pricePickerview.delegate = self;


    [priceActionsheet addSubview:pricePickerview];
    //[pickerView release];

    priceToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 485, 44)];
    priceToolbar.barStyle = UIBarStyleBlackTranslucent;
    [priceToolbar sizeToFit];

    NSMutableArray *barItems = [[NSMutableArray alloc] init];

    UIBarButtonItem *flexSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];
    [barItems addObject:flexSpace];

    UIBarButtonItem *doneBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(doneButtonPressed:)];
    [barItems addObject:doneBtn];

    UIBarButtonItem *cancelBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel target:self action:@selector(cancelButtonPressed:)];
    [barItems addObject:cancelBtn];

    [pricePickerview selectRow:priceValue inComponent:0 animated:YES];//Memory leaks shows 100% here

    [priceToolbar setItems:barItems animated:YES];

    [priceActionsheet addSubview:priceToolbar];

    [priceActionsheet addSubview:pricePickerview];

    [priceActionsheet showInView:self.view];  

    [priceActionsheet setBounds:CGRectMake(0, 0, 485, 320)];

非常感谢任何帮助。

Answer 1

如果你的项目是非 ARC 的，那可能是因为你将 [super dealloc]; 留在了某个地方子类化基础类。我对 NSObject 的子类也有同样的问题。我忘了写 [super dealloc]; 并且得到了一些类似的泄漏。