刚接触iOS,依照教程操作执行出现错误 Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'unable to dequeue a cell with identifier Cell - must register a nib or a class for the identifier or connect a prototype cell in a storyboard 解…

 Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[ViewController > setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key backBtn.' 第一种情况:xib文件属性输出口连接错误,IBout多连或者忘关输入口 第二种情况:引入第三方的SDK会出现错误,导入的…

*** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[ViewController > setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key backBtn.' 第一种情况:xib文件属性输出口连接错误,IBout多连或者忘关输入口 第二种情况:引入第三方的SDK会出现错误,…

*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: '-[__NSCFDictionary setObject:forKey:]: mutating method sent to immutable object' 初始代码 NSMutableDictionary *dataDict=[[NSMutableDictionary alloc]init]; dataDict…

报错: Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[__NSPlaceholderDictionary initWithObjects:forKeys:count:]: attempt to insert nil object from objects[0]' 看起报错就知道:试图插入零对象. 说明某个对象为零或为空 解决方法: 检查一遍当页代码,是否有相关现象.一般…

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '[<_UIFeedbackParameters 0x1d4442e50> setNilValueForKey]: could not set nil as the value for the key rate.' *** First throw call stack: (0x183d82d8c 0x182f3c5ec 0x18…

今天上班打开昨天的程序运行,昨天跑的很溜的程序今天竟然crash了,好郁闷啊!下面附上crash的栈打印信息: 经过一番调试终于找到了原因,程序crash是因为CALayer的位置中含有不存在的数,就是有的地方除以0了. 如果程序总出现上述崩溃信息,就是在某个地方除以0了.…

iOS App里面所有的View构成一个组件树,这个树里面如果有了闭环就会出现这个报错,最常见的你不小在某UIViewController里面写了这样的代码: someView.addSubView(view) 因为ViewController默认有一个view作为VC的全局父view,你这样代码就会导致整个view树出现指向闭环.于是出现了 a part of cycyle in Its layer 这样的错误.…

问题描述: ionic项目,windows下正常,打包android可正常运行: 因为需要打包到iPhone (ios 11.0.1)上测试,将代码拿到Mac OS环境下(重新npm install.platform add ios等)测试的时候, build ios正常.ionic serve正常,但是打包运行到iPhone上的时候,出现应用crash闪退的问题. 打开XCode连接设备,调试发现具体的错误信息如下: 工程本身编译是没有问题的,可以编译成功: 问题排查: 开始怀疑是项目代码的问…

用如下的方法可以非常方便停留到具体crash的某行代码 Adding an Exception Breakpoint Add an exception breakpoint to your project in the breakpoint navigator. To add an exception breakpoint In the bottom-left corner of the breakpoints navigator, click the Add button. Choose Ad…