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…
 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…
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…
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.…
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…
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.…