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在仪器中分析时出现SIGSEGV(内存访问错误)错误

instruments crash swift ios

Emre Önder · 技术社区 · 8 年前

我试图捕捉内存泄漏,并在仪器工具中使用泄漏探查器保留周期。然而,每当我点击仪器中的“录制”按钮时,应用程序似乎会先启动然后崩溃。如果我从Xcode打开应用程序并将其传输到Instruments,则在单击 UIButton . 如果我从模拟器打开应用程序,我可以得到第二个屏幕,但它也崩溃了。此外,应用程序不会显示任何内存泄漏图表,也不会崩溃正常使用。

这是事故日志;

异常类型:EXC_BAD_ACCESS(SIGSEGV)异常子类型:KERN_INVALID_ADDRESS at 0x0000000000000018 VM Region Info:0x18不是在任何地区。以下区域之前的字节数:4377985000 区域类型开始-结束[VSIZE]PRT/MAX SHRMOD区域详细信息开始时未使用的空间 --->
__文本0000000 104f2c000-0000000 104fbc000[576K]r-x/r-x SM=COW…ti-App Test]

终止信号:分段故障:11终止原因: 命名空间信号,代码0xb终止进程:exc处理程序[0]

筛选的系统日志:未找到

线程0名称:调度队列:com.apple.main-Thread线程0 崩溃:0 libswiftCore.dylib 0x000000010597b2b4 0x1058cc000+717492 1 libswiftCore.dylib
0x000000010598823c 0x1058cc000+770620 2 UIFoundation公司
0x000000018f01fbdc属性哈希+460 3基础
0x0000000185417edc hashProbe+72 4基础
0x0000000185417e7c-[NSConcreteHashTable获取项目:]+40 5
基金会0x000000018f01fd54 +[NSAttributeDictionary newWithDictionary:+136 6基础0x000000018542666c-[NSConcreteAttributedString initWithString:属性:]+124 7我的应用程序测试
0x0000000104fbb894 0x104f2c000+587924 8我的应用程序测试
0x0000000104fba588 0x104f2c000+583048 9我的应用程序测试
0x0000000104fba494 0x104f2c000+582804 10车型年款应用程序测试
0x0000000104fb9964 0x104f2c000+579940 11我的应用程序测试
0x0000000104fb9830 0x104f2c000+579632 12车型年款应用程序测试
0x0000000104fcb608 0x104f2c000+652808 13车型年款应用程序测试
0x0000000104fccea4 0x104f2c000+659108 14我的应用程序测试
0x0000000104fcc50c 0x104f2c000+656652 15我的应用程序测试
0x0000000104fcc5a0 0x104f2c000+656800 16套件
0x000000018df36bfc-[UIViewController loadViewIfRequired]+1040 17 UIKit 0x000000018df367d4-[UIViewController 查看]+28 18我的应用程序测试0x0000000104f85b6c 0x104f2c000 +367468 19我的应用程序测试0x0000000104f85470 0x104f2c000+365680 20我的应用程序测试0x0000000104f85688 0x104f2c000+ 366216 21 UIKit 0x000000018df6b20c -[UIApplication sendAction:to:from:forEvent:+96 22 UIKit 0x000000018df6b18c-[uicontrolsendaction:to:forEvent:+80 23 UIKit 0x000000018df55f4c-[UIControl _sendActionsForEvents:withEvent:+440 24 UIKit 0x000000018df6aa80-[UIControl触摸:withEvent:+576 25 UIKit 0x000000018df6a5a0-[UIWindow _sendTouchesForEvent:+2544 26 UIKit 0x000000018df65a70-[UIWindow sendEvent:+3208 27 UIKit
0x000000018df37078-[UI应用程序发送事件:]+340 28 UIKit
0x000000018e876f98 dispatchPreprocessedEventFromEventQueue+2364调度预处理事件 29套件0x000000018e879408 __handleEventQueueInternal+4760 30 UIKit 0x000000018e872574\uuuu handleHIDEventFetcherDrain+152 31 核心基础0x0000000184ad0358 __CFRUNLOOP_正在调用_OUT_以执行_SOURCE0_函数 +24 32核心基础0x0000000184ad02d8\uu CFRunLoopDoSource0 +88 33 CoreFoundation 0x0000000184acfb60\u cfrunloopdosources 0+204 34 CoreFoundation 0x0000000184acd738\u CFRunLoopRun+1048 35 CoreFoundation
0x00000001849ee2d8 CFRunLoopRunSpecific+436 36图形服务
0x000000018687ff84 GSEventRunModal+100 37 UIKit
0x000000018df9a880 UIApplicationMain+208 38我的应用程序测试
0x0000000104f97854 0x104f2c000+440404 39 libdyld.dylib
0x000000018451256c启动+4

线程1:0 libsystem_kernel.dylib 0x0000000184641dbc __workq_kernreturn+8 1 libsystem_pthread.dylib 0x0000000184753144_pthread_wqthread+1288 2
libsystem_pthread.dylib 0x0000000184752c30启动_wqthread+4

线程2:0 libsystem_pthread.dylib 0x0000000184752c2 开始线程+0

线程3名称:com.apple.uikit.eventfetch-Thread Thread 3:0
libsystem_kernel.dylib 0x0000000184620bc4马赫信息陷阱+8 1 libsystem_kernel.dylib 0x0000000184620a3c马赫数消息+72 2
核心基础0x0000000184acfce4 CFRunLoopServiceMachPort+196 3核心基础0x0000000184acd8b0\uu CFRunLoopRun+1424 4核心基础
0x00000001849ee2d8 CFRunLoopRunSpecific+436 5基础
0x00000001854166e4-[nsrunlop+50916(nsrunlop) 运行模式:早于日期:]+304 6基础
0x0000000185435afc-[NSRunLoop+178940(NSRunLoop)runUntilDate:]+ 96 7 UIKit 0x000000018eae602c -[UIEventFetcher threadMain]+136 8基础0x0000000185517860线程启动 +996 9年
libsystem_pthread.dylib 0x000000018475432c_pthread_body+308 10 libsystem_pthread.dylib 0x00000001847541f8 _pthread_body+ 0 11 libsystem_pthread.dylib 0x0000000184752c38线程启动+ 四

线程4:0 libsystem_pthread.dylib 0x0000000184752c2 开始线程+0

线程5名称:com.apple.nsurlconnectionload线程5:0
libsystem_kernel.dylib 0x0000000184620bc4马赫信息陷阱+8 1 libsystem_kernel.dylib 0x0000000184620a3c马赫数消息+72 2
核心基础0x0000000184acfce4 CFRunLoopServiceMachPort+196 3核心基础0x0000000184acd8b0\uu CFRunLoopRun+1424 4核心基础
0x00000001849ee2d8 CFRunLoopRunSpecific+436 5 CFNetwork
0x0000000185157b40+[NSURLConnection+715584(加载程序) _resourceLoadLoop:+4046基础0x0000000185517860线程启动 +9967个
libsystem_pthread.dylib 0x000000018475432c_pthread_body+308 8 libsystem_pthread.dylib 0x00000001847541f8 _pthread_body+ 0 9 libsystem_pthread.dylib 0x0000000184752c38线程启动+ 四

线程0因ARM线程状态(64位)而崩溃: x0:0x00000001c4227ac0 x1:0x000000018eca2db2 x2:0x000000016aecf908 x3:0x0000000000000000 x4:0x0000000000000000X5:0x0000000000000020 x6:0x0000000185426654 x7:0x0000000000000130 x8:0x0000000000000000 x9:0x0000000000000000 x10:0x0119490101194980 x11:0x0000000001194901 x12:0x0000000001194800 x13:0x0000000000000001 x14:0x0000000000000000 x15: 0x01194901011949c0 x16:0x0000000000000000x17:0x0000000105988228 x18:0x0000000000000000X19:0x00000001c4227ac0 x20: 0x00000001c4227ac0 x21:0x00000001B542100X22:0x00000001c0124f60 x23:0x0000000000000000 x24:0x00000001c0200730 x25: 0x0000000000000000x26:0x000000018eca3f46 x27:0x00000001b3bca000
x28:0x00000001c04578e0 fp:0x000000016aecf4f0 lr: 0x000000010598823c sp:0x000000016aecf4e0 pc:0x000000010597b2b4 cpsr:0x20000000

我找了一个月,不确定是不是仪器故障。我检查了下面的职位;

Xcode Instruments: Leaks - App crashes on launch

Instruments crashing while using Leaks instrument

xcode instruments causing app crash

编辑:另一个崩溃日志。在这个程序中,我打开应用程序并将内存传输到Instruments工具,然后触摸一个UIView top打开一个新控制器。

日期/时间:2018-07-06 15:13:34.5980+0300发布时间:2018-07-06 15:13:19.6298+0300操作系统版本:iPhone操作系统11.0 (15A372)基带版本:2.00.01报告版本:104

异常类型:EXC_BAD_ACCESS(SIGSEGV)异常子类型: KERN_无效的_地址位于0x0000000000000018虚拟机区域信息:0x18不是在任何地区。以下区域之前的字节数:4330094568 区域类型开始-结束[VSIZE]PRT/MAX SHRMOD区域详细信息开始时未使用的空间 --->
__文本0000000 102180000-0000000 102240000[1152K]r-x/r-x SM=COW…ti-Filo测试]

终止信号:分段故障:11终止原因: 命名空间信号,代码0xb终止进程:exc处理程序[0] 由线程触发:0

筛选的系统日志:未找到

线程0名称:调度队列:com.apple.main-Thread线程0 崩溃:0 libswiftCore.dylib 0x0000000102bdf278 0x102b30000+717432 1 libswiftCore.dylib
0x0000000102bec1b0 0x102b30000+770480 2核心基础
0x0000000184a3ec80-[NSDictionary allKeys]+108 3个UIKit
0x000000018e15738c-[NSDictionary+2294668 (UIStringDrawingKeyCompatibility) _用户界面属性包含正在绘制的绘图键]+36 4用户界面工具包0x000000018e09fde0-[UINavigationBar setTitleTextAttributes:]+144 5我的应用程序测试
0x00000001021e82e8 0x102180000+426728 6我的应用程序测试
0x00000001021e67c8 0x102180000+419784 7我的应用程序测试
0x00000001021e6a14 0x102180000+420372 8套件
0x000000018e5c3f78-[UIGestureRecognizerTarget目标 _sendActionWithGestureRecognizer:]+64 9单元UIKit 0x000000018e5c84dc单元UIGestureRecognizerSendTargetActions+124 10 UIKit 0x000000018e0b2dc8 _UIGestureRecognizerSendActions+320 11 UIKit 0x000000018df67748-[UIGestureRecognizer识别器 _更新文件:buttonEvent:+732 12 UIKit 0x000000018e5b23fc UIGestureEnvironmentUpdate+1056 13 UIKit
0x000000018e5b1f88-[UIGestureEnvironment(环境) _deliverEvent:ToGetRestureRecognizers:usingBlock:+404 14 UIKit 0x000000018e5b10e4-[UIGestureEnvironment _updateGesturesForEvent:窗口:]+276 15 UIKit 0x000000018df65a54-[UIWindow发送事件:]+3180 16 UIKit
0x000000018df37078-[UI应用程序发送事件:]+340 17 UIKit
0x000000018e876f98 dispatchPreprocessedEventFromEventQueue+2364调度预处理事件 18工具包0x000000018e879408 __handleEventQueueInternal+4760 19 UIKit 0x000000018e872574\uuuu handleHIDEventFetcherDrain+152 20 核心基础0x0000000184ad0358 __CFRUNLOOP_正在调用_OUT_以执行_SOURCE0_函数 +24 21 CoreFoundation 0x0000000184ad02d8\uu CFRunLoopDoSource0 +88 22核心基础0x0000000184acfb60\uu cfrunloopdosources 0+204 23核心基础0x0000000184acd738\uu CFRunLoopRun+1048 24核心基础
0x00000001849ee2d8 CFRunLoopRunSpecific+436 25图形服务
0x000000018687ff84 GSEventRunModal+100 26 UIKit
0x000000018df9a880 UIApplicationMain+208 27我的应用程序测试
0x00000001021facdc 0x102180000+503004 28 libdyld.dylib
0x000000018451256c启动+4

线程1:0 libsystem_pthread.dylib 0x0000000184752c2 开始线程+0

线程2:0 libsystem_pthread.dylib 0x0000000184752c2 开始线程+0

线程3:0 libsystem_pthread.dylib 0x0000000184752c2 开始线程+0

线程4名称:com.apple.uikit.eventfetch-Thread线程4:0
libsystem_kernel.dylib 0x0000000184620bc4马赫信息陷阱+8 1 libsystem_kernel.dylib 0x0000000184620a3c马赫数消息+72 2
核心基础0x0000000184acfce4 CFRunLoopServiceMachPort+196 3核心基础0x0000000184acd8b0\uu CFRunLoopRun+1424 4核心基础
0x00000001849ee2d8 CFRunLoopRunSpecific+436 5基础
0x00000001854166e4-[nsrunlop+50916(nsrunlop) 运行模式:早于日期:]+304 6基础
0x0000000185435afc-[NSRunLoop+178940(NSRunLoop)runUntilDate:]+ 96 7 UIKit 0x000000018eae602c -[UIEventFetcher threadMain]+136 8基础0x0000000185517860线程启动 +996 9年
libsystem_pthread.dylib 0x000000018475432c_pthread_body+308 10 libsystem_pthread.dylib 0x00000001847541f8 _pthread_body+ 0 11 libsystem_pthread.dylib 0x0000000184752c38线程启动+ 四

线程5名称:GAIThread线程5:0 libsystem_kernel.dylib
0x0000000184620bc4 mach_msg_trap+8 1 libsystem_kernel.dylib
0x0000000184620a3c马赫数消息+72 2核心基础
0x0000000184acfce4 CFRunLoopServiceMachPort+196 3个
CoreFoundation 0x0000000184acd8b0\u CFRunLoopRun+ 1424 4核心基础0x00000001849ee2d8 CFRunLoopRunSpecific+4365基础
0x00000001854166e4-[nsrunlop+50916(nsrunlop) 运行模式:早于日期:]+304 6基础
0x000000018546862c-[nsrunlop+386604(nsrunlop)运行]+88 7车型年款应用测试0x000000010225b108 0x102180000+897288 8
基础0x0000000185517860线程启动 +996 9 libsystem_pthread.dylib 0x000000018475432c _pthread_body+308 10 libsystem_pthread.dylib 0x00000001847541f8 _pthread_body+0 11 libsystem_pthread.dylib
0x0000000184752c38线程开始+4

线程6名称:com.apple.NSURLConnectionLoader线程6:0
libsystem_kernel.dylib 0x0000000184620bc4马赫信息陷阱+8 1 libsystem_kernel.dylib 0x0000000184620a3c马赫数消息+72 2
CoreFoundation 0x0000000184acfce4 CFRunLoopServiceMachPort+196 3核心基础0x0000000184acd8b0\uu CFRunLoopRun+1424 4核心基础
0x00000001849ee2d8 CFRunLoopRunSpecific+436 5 CFNetwork
0x0000000185157b40+[NSURLConnection+715584(加载程序) _resourceLoadLoop:+4046基础0x0000000185517860线程启动 +9967个
libsystem_pthread.dylib 0x000000018475432c_pthread_body+308 8 libsystem_pthread.dylib 0x00000001847541f8 _pthread_body+ 0 9 libsystem_pthread.dylib 0x0000000184752c38线程启动+ 四

线程0因ARM线程状态(64位)而崩溃: x0:0x00000001c427c60 x1:0x000000018eca2db2 x2:0x0000000000000000 x3:0x000000010637e8d0 x4:0x0000000000000002 x5:0x0000000000000020 x6:0x00000001021e82e8 x7:0x0000000000000b70 x8:0x0000000000000000 x9:0x0000000000000000 x10:0x01446b0101446b80 x11:0x0000000001446b01 x12:0x0000000001446a00 x13:0x0000000000000001 x14:0x0000000000000000 x15: 0x01446b0101446bc0 x16:0x0000000000000000x17:0x0000000102bec19c x18:0x0000000000000000 x19:0x00000001c4227c60 x20: 0x00000001c4227c60 x21:0x00000001c4227c60 x22:0x00000000000000d0 x23:0x00000000000001f0 x24:0x0000000000000008 x25: 0x00000001c4107740 x26:0x00000001c40ca6b0 x27:0x00000001c4093330
x28:0x00000001b3f8f000 fp:0x000000016dc7ce40 lr: 0x0000000102bec1b0 sp:0x000000016dc7ce30 pc:0x0000000102bdf278 cpsr:0x20000000

编辑: 在“弗兰蒂克洛克”的回答之后。当我删除时 [UINavigationBar setTitleTextAttributes:] detail类可以打开,但不显示任何项(title、back按钮或任何单元格)。它们都是空的,我还在漏水。

这是我编写的控制器类 [UINavigationBar setTitleTextAttributes:]

class WelcomeViewController: BaseViewController {

let bgView = UIView()
let backgroundImage = UIImageView()

let logoImage: UIImageView = {
    let i = UIImageView()
    i.image = UIImage(named: "full_logo")
    i.contentMode = .scaleAspectFit
    return i
}()

let welcomeLabel : UILabel = {
    let l = UILabel()
    l.font = Fonts.font.withSize(24)
    l.textColor = UIColor.white
    l.textAlignment = .center
    l.numberOfLines = 0
    l.sizeToFit()
    return l
}()

let loginLbl: UILabel = {
    let l = UILabel()
    l.font = Fonts.font.withSize(13)
    l.textColor = UIColor.white
    l.textAlignment = .center
    l.numberOfLines = 0
    l.sizeToFit()
    return l
}()

let adminBtn: UIButton = {
    let b = UIButton()
    b.backgroundColor = Color.Common.buttonColor
    b.layer.cornerRadius = 6.0
    return b
}()

let userBtn: UIButton = {
    let b = UIButton()
    b.backgroundColor = Color.Common.buttonColor
    b.layer.cornerRadius = 6.0
    return b
}()

lazy var supportedServicesView = WelcomeScreenButtonView(text: getLabelText(key: CMSKeys.CMS_LBL_SUPPORTEDSERVICES), imageName: "phone")
lazy var incidentView = WelcomeScreenButtonView(text: getLabelText(key: CMSKeys.CMS_LBL_INCIDENT), imageName: "phone")
lazy var contactUsView = WelcomeScreenButtonView(text: getLabelText(key:CMSKeys.CMS_LBL_CONTACT), imageName: "phone")
lazy var moreView = WelcomeScreenButtonView(text: getLabelText(key:CMSKeys.CMS_LBL_MORE), imageName: "wdiger")

lazy var emergencyBtn = SendButton(text: "Button")

let firstStackView = UIStackView()
let secondStackView = UIStackView()
let thirdStackView = UIStackView()

let btnStackView = UIStackView()

override func viewDidLoad() {
    super.viewDidLoad()
    self.setPageID()
    designUI()
}

override func viewDidAppear(_ animated: Bool) {
    if(AppContext.instance.comesFromURL != nil){
        comesFromURL()
    }
}
override func viewWillAppear(_ animated: Bool) {
    if(analyticsName != nil){
        self.sendDataToGA()
    }
}

override func viewDidLayoutSubviews() {

    bgView.anchor(self.thirdStackView.topAnchor, left: self.view.leftAnchor, bottom: self.view.bottomAnchor, right: self.view.rightAnchor, topConstant: 40, leftConstant: 0, bottomConstant: 0, rightConstant: 0, widthConstant: 0, heightConstant: 0)

    let margins = view.layoutMarginsGuide
    thirdStackView.leadingAnchor.constraint(equalTo: margins.leadingAnchor,constant: 5).isActive = true
    thirdStackView.trailingAnchor.constraint(equalTo: margins.trailingAnchor,constant: -5).isActive = true
    thirdStackView.bottomAnchor.constraint(equalTo: self.emergencyBtn.topAnchor, constant: -10).isActive = true
    thirdStackView.heightAnchor.constraint(equalTo: thirdStackView.widthAnchor, multiplier: 0.77).isActive = true

    emergencyBtn.anchor(nil, left: self.view.leftAnchor, bottom: self.bottomLayoutGuide.topAnchor, right: self.view.rightAnchor, topConstant: 10, leftConstant: 20, bottomConstant: 20, rightConstant: 20, widthConstant: 0, heightConstant: 48)
    if #available(iOS 11.0, *) {
        logoImage.anchor(self.view.safeAreaLayoutGuide.topAnchor, left: self.view.leftAnchor, bottom: nil, right: self.view.rightAnchor, topConstant: 40, leftConstant: 80, bottomConstant: 0, rightConstant: 80, widthConstant: 0, heightConstant: 0)
    } else {
        logoImage.anchor(self.view.topAnchor, left: self.view.leftAnchor, bottom: nil, right: self.view.rightAnchor, topConstant: 40, leftConstant: 80, bottomConstant: 0, rightConstant: 80, widthConstant: 0, heightConstant: 0)
        // Fallback on earlier versions
    }
    logoImage.anchorCenterXToSuperview()
    let welcomeLblHeight = heightForView(text: "Welcome", font: welcomeLabel.font, width: self.view.bounds.width)
    let loginLblHeight = heightForView(text: "Please Log In", font: loginLbl.font, width: self.view.bounds.width)
    welcomeLabel.anchor(self.logoImage.bottomAnchor, left: self.view.leftAnchor, bottom: nil, right: self.view.rightAnchor, topConstant: 0, leftConstant: 50, bottomConstant: 0, rightConstant: 50, widthConstant: 0, heightConstant: welcomeLblHeight)
    loginLbl.anchor(self.welcomeLabel.bottomAnchor, left: self.view.leftAnchor, bottom: nil, right: self.view.rightAnchor, topConstant: 10, leftConstant: 50, bottomConstant: 0, rightConstant: 50, widthConstant: 0, heightConstant: loginLblHeight)
    btnStackView.anchor(nil, left: self.view.leftAnchor, bottom: self.thirdStackView.topAnchor, right: self.view.rightAnchor, topConstant: 0, leftConstant: 20, bottomConstant: 20, rightConstant: 20, widthConstant: 0, heightConstant: 50)

    backgroundImage.frame = CGRect(x: 0, y: 0, width: self.view.frame.width, height: self.view.frame.height - self.bgView.frame.height)
}

private func designUI(){
    self.view.translatesAutoresizingMaskIntoConstraints = true
    backgroundImage.image = UIImage(named: "background.png")
    backgroundImage.contentMode = .scaleAspectFill
    self.view.insertSubview(backgroundImage, at: 0)

    bgView.backgroundColor = Color.Common.welcomeScreenBackgroundColor
    self.view.insertSubview(bgView, at: 1)
    view.addSubview(logoImage)
    welcomeLabel.text = getLabelText(key: CMSKeys.CMS_LBL_WELCOME)
    view.addSubview(welcomeLabel)
    loginLbl.text = getLabelText(key: CMSKeys.CMS_LBL_LOGIN)
    view.addSubview(loginLbl)

    adminBtn.backgroundColor = Color.Common.adminGreen
    adminBtn.setTitle(getLabelText(key: CMSKeys.CMS_BTN_ADMIN), for: .normal)
    adminBtn.addTarget(self, action: #selector(adminBtnTapped(_:)), for: .touchUpInside)

    userBtn.backgroundColor = Color.Common.userGreen
    userBtn.setTitle(getLabelText(key: CMSKeys.CMS_BTN_USER), for: .normal)
    userBtn.addTarget(self, action: #selector(userBtnTapped(_:)), for: .touchUpInside)

    btnStackView.axis  = UILayoutConstraintAxis.horizontal
    btnStackView.distribution = UIStackViewDistribution.fillEqually
    btnStackView.alignment = UIStackViewAlignment.fill
    btnStackView.spacing = 10.0
    btnStackView.addArrangedSubview(adminBtn)
    btnStackView.addArrangedSubview(userBtn)
    btnStackView.translatesAutoresizingMaskIntoConstraints = false
    self.view.addSubview(btnStackView)

    firstStackView.axis  = UILayoutConstraintAxis.vertical
    firstStackView.distribution = UIStackViewDistribution.fillEqually
    firstStackView.alignment = UIStackViewAlignment.fill
    firstStackView.spacing = 10.0
    firstStackView.addArrangedSubview(supportedServicesView)
    firstStackView.addArrangedSubview(contactUsView)
    firstStackView.translatesAutoresizingMaskIntoConstraints = false

    secondStackView.axis  = UILayoutConstraintAxis.vertical
    secondStackView.distribution = UIStackViewDistribution.fillEqually
    secondStackView.alignment = UIStackViewAlignment.fill
    secondStackView.spacing = 10.0
    secondStackView.addArrangedSubview(incidentView)
    secondStackView.addArrangedSubview(moreView)
    secondStackView.translatesAutoresizingMaskIntoConstraints = false

    thirdStackView.axis = UILayoutConstraintAxis.horizontal
    thirdStackView.distribution = UIStackViewDistribution.fillEqually
    thirdStackView.alignment = UIStackViewAlignment.fill
    thirdStackView.spacing = 10.0
    thirdStackView.addArrangedSubview(firstStackView)
    thirdStackView.addArrangedSubview(secondStackView)
    thirdStackView.translatesAutoresizingMaskIntoConstraints = false
    view.addSubview(thirdStackView)

    //View Tap Gestures
    let tapSupportedServices = UITapGestureRecognizer(target: self, action: #selector(self.tapSupportedServices(_:)))
    supportedServicesView.addGestureRecognizer(tapSupportedServices)
    supportedServicesView.isUserInteractionEnabled = true

    let tapIncidentView = UITapGestureRecognizer(target: self, action: #selector(self.tapIncident(_:)))
    incidentView.addGestureRecognizer(tapIncidentView)
    incidentView.isUserInteractionEnabled = true

    let tapContactUs = UITapGestureRecognizer(target: self, action: #selector(self.tapContactUs(_:)))
    contactUsView.addGestureRecognizer(tapContactUs)
    contactUsView.isUserInteractionEnabled = true

    let tapMoreView = UITapGestureRecognizer(target: self, action: #selector(self.tapMore(_:)))
    moreView.addGestureRecognizer(tapMoreView)
    moreView.isUserInteractionEnabled = true

    emergencyBtn.layer.cornerRadius = 6.0
    emergencyBtn.addTarget(self, action: #selector(emergenyBtnTapped(_:)), for: .touchUpInside)
    self.view.addSubview(emergencyBtn)

}

@objc func tapSupportedServices(_ sender: UITapGestureRecognizer) {
    let linkingVC = SupportedServicesFirstViewController()
    let controller = createNavController(title: "Services", viewController: linkingVC)
    self.present(controller, animated: true)
}


override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

private func heightForView(text:String, font:UIFont, width:CGFloat) -> CGFloat{
    let label:UILabel = UILabel(frame: CGRect(x: 0, y: 0, width: width, height: CGFloat.greatestFiniteMagnitude))
    label.numberOfLines = 0
    label.lineBreakMode = NSLineBreakMode.byWordWrapping
    label.font = font
    label.text = text
    label.sizeToFit()

    return label.frame.height
}

//Gets a Title and a ViewController then returns a UINavigationController with attributes
private func createNavController(title: String, viewController: UIViewController) -> UINavigationController {
    viewController.view.backgroundColor = UIColor(red:0.87, green:0.87, blue:0.87, alpha:1.0)
    let navController = UINavigationController(rootViewController: viewController)
    navController.navigationBar.topItem?.title = title
    navController.navigationBar.barTintColor = Color.NavigationBar.tintColor
    navController.navigationBar.tintColor = UIColor.white
    //Fix: Leak
    navController.navigationBar.titleTextAttributes = [NSAttributedStringKey.foregroundColor: Color.NavigationBar.textColor]

    return navController
}

private func removeViews(){
    self.emergencyBtn.removeFromSuperview()
    self.incidentView.removeFromSuperview()
    self.moreView.removeFromSuperview()
    self.supportedServicesView.removeFromSuperview()
    self.contactUsView.removeFromSuperview()
}
deinit {
    print("Welcome Deinited")
    removeViews()
}
}

2 回复 | 直到 8 年前

FranticRock 8 年前

在第一个堆栈跟踪中,有与以下相关的代码: [UINavigationBar setTitleTextAttributes:]
它试图通过在标题上设置文本属性来自定义导航栏。你在这么做吗?你能不能试着把这个评论出来,看看问题是否解决了?

从技术上讲,你所拥有的并不是内存泄漏。您正在访问已解除分配的对象。另一件事,你可以做的是启用僵尸对象,在你正在运行的方案,看看你是否可以得到信息,哪个对象得到解除分配。

现在,如果上面的堆栈跟踪都没有指向您直接编写的任何代码,并且您说您已经使用了内存调试图工具,并且没有找到任何对正在检查泄漏的任何对象的强引用,我将在这里使用更具创造性的方法来查找问题。我经常使用的方法是消除。开始注释你的控制器的大部分,直到你只剩下空壳。每次,您都可以将代码减半(日志性能),并重新测试代码的哪个部分引用了已释放的对象。

显然,由于正常的应用程序操作不会导致错误的访问异常,它可能与XCode/Instruments内部有关,但是 setTitleTextAttributes 上面看起来很可疑,我会先缩小这个问题是否与导航栏有关。您对导航层次结构或导航栏用户界面的自定义有什么奇怪的地方吗?

还检查以前的导航事件/实例中是否存在相同的视图控制器的其他实例。听起来好像一个UI对象正在被释放,然后被一个异步进程更新。

同时覆盖你的deinit{}。方法并将print语句放入其中,以检测正在释放的所有相关对象。这将有助于缩小范围,稍后将释放和访问哪个控制器。

它是否出现在所有iOS版本/设备型号上或仅在特定型号上?

Faisal Memon 8 年前

这个问题提出了两个问题。第一个原因是分析被破坏,第二个原因是你的应用程序在释放问题之后有一个用途。

@弗兰克罗克在第二个问题上提出了很好的建议。

我对分析问题的建议是尝试一种解决方法。如果您的应用程序可以用Beta Xcode 10.0编译(编写时),那么您可以进入Edit Schema( Command-< )在运行操作的“诊断”选项卡中,单击 日志Malloc堆栈 有子选项 所有分配和自由历史记录 . 然后你可以:

在模拟器中运行应用程序。
按下调试器区域中的内存图按钮(第8个图标,看起来像三个圆圈连接在一起)
执行文件->导出内存图。

你可以自己研究记忆图,也可以把它放在像Pastebin这样的公共场所,让其他人提供见解。苹果有一个关于这种新方法的信息视频: WWDC-2018-416-Memory-Deep-Dive