iOS错误信息：中断或个案陈述不在循环或开关中

编程新手。使用随机数字生成器创建一个包含不同类别的测验应用程序，并为每个类别的问题提供病例陈述。我有两个问题。一个是.m文件中的一行。每个类别以 - （IBAction）xyz：（id）发件人开头;在一行中，我不断收到错误消息“预期的表达式”。我还注意到，这条线表示侧面的圆形指示按钮链接没有出现。我尝试重新链接按钮，但我得到相同的错误信息。iOS错误信息：中断或个案陈述不在循环或开关中

（不确定是否第一个问题导致第二个问题）第二个问题是在.m文件中的这个相同的类别我不断收到这些错误消息：中断或case语句不在循环或switch.I有复制&粘贴代码确保没有这个错误语句的类别中的缩进和拼写正确，但是我仍然在这部分代码中得到这些错误消息。我不知道如何解决它。请帮忙。我包含了所述错误的行。 THX
`

}

-(IBAction)OphthalmicInstruments:(id)sender{ 

    Cat1.hidden = YES; 
    Cat2.hidden = YES; 

    BasicOptics.hidden = YES; 
    EyeAnatomy.hidden = YES; 
    OphthalmicInstruments.hidden = YES; 
    Lenses.hidden = YES; 
    Transposition.hidden = YES; 
    Standards.hidden = YES; 
    Frames.hidden = YES; 
    Random.hidden = YES; 
    Question.hidden = NO; 

    Answer1.hidden = NO; 
    Answer2.hidden = NO; 
    Answer3.hidden = NO; 
    Answer4.hidden = NO; 

    Right1.hidden = YES; 
    Right2.hidden = YES; 
    Right3.hidden = YES; 
    Right4.hidden = YES; 

    Wrong1.hidden = YES; 
    Wrong2.hidden = YES; 
    Wrong3.hidden = YES; 
    Wrong4.hidden = YES; 

    SelectCategory.hidden = YES; 

int OphthalmicInstrumentsQuestion = rand() % 33; 
switch (OphthalmicInstrumentsQuestion) { 
    case 0: 
     Question.text = [NSString stringWithFormat:@"The PD ruler is used to measure:"]; 
     Right1.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Intepupillary distance"]; 
     Answer2.text = [NSString stringWithFormat:@"Vertex distance"]; 
     Answer3.text = [NSString stringWithFormat:@"Intraocular pressure"]; 
     Answer4.text = [NSString stringWithFormat:@"Basecurve"]; 
     break; 
    case 1: 
     Question.text = [NSString stringWithFormat:@"A distometer measures:"]; 
     Right2.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Interpupillary distance"]; 
     Answer2.text = [NSString stringWithFormat:@"Vertex distance"]; 
     Answer3.text = [NSString stringWithFormat:@"Intraocular pressure"]; 
     Answer4.text = [NSString stringWithFormat:@"Basecurve"]; 
     break; 
    case 2: 
     Question.text = [NSString stringWithFormat:@"A tonometer measures:"]; 
     Right3.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Interpupillary distance"]; 
     Answer2.text = [NSString stringWithFormat:@"Vertex distance"]; 
     Answer3.text = [NSString stringWithFormat:@"Intraocular pressure"]; 
     Answer4.text = [NSString stringWithFormat:@"Basecurve"]; 
     break; 
    case 3: 
     Question.text = [NSString stringWithFormat:@"A lens clock measures:"]; 
     Right4.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Interpupillary distance"]; 
     Answer2.text = [NSString stringWithFormat:@"Vertex distance"]; 
     Answer3.text = [NSString stringWithFormat:@"Intraocular pressure"]; 
     Answer4.text = [NSString stringWithFormat:@"Basecurve"]; 
     break; 
    case 4: 
     Question.text = [NSString stringWithFormat:@"A pupillometer uses a light to get a reflection from the :"]; 
     Right1.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Cornea"]; 
     Answer2.text = [NSString stringWithFormat:@"Retina"]; 
     Answer3.text = [NSString stringWithFormat:@"Iris"]; 
     Answer4.text = [NSString stringWithFormat:@"Sclera"]; 
     break; 
    case 5: 
     Question.text = [NSString stringWithFormat:@"In this system a hypothetical box surrounds each lens, and it is used for standard measurements of lenses and frames:"]; 
     Right2.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"MRP"]; 
     Answer2.text = [NSString stringWithFormat:@"Boxing"]; 
     Answer3.text = [NSString stringWithFormat:@"Dato"]; 
     Answer4.text = [NSString stringWithFormat:@"Monel"]; 
     break; 
    case 6: 
     Question.text = [NSString stringWithFormat:@"A,B,C,DBL,ED,PC, & DBL are all part of what standard measuring system?"]; 
     Right3.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"MRP"]; 
     Answer2.text = [NSString stringWithFormat:@"Datum"]; 
     Answer3.text = [NSString stringWithFormat:@"Boxing"]; 
     Answer4.text = [NSString stringWithFormat:@"Monel"]; 
     break; 
    case 7: 
     Question.text = [NSString stringWithFormat:@"In the Boxing Measurement system for lenses and frames the A represents:"]; 
     Right4.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Distance Between Lenses"]; 
     Answer2.text = [NSString stringWithFormat:@"Minimum Blank Size"]; 
     Answer3.text = [NSString stringWithFormat:@"Vertical Measurement from outer to inner lens edge"]; 
     Answer4.text = [NSString stringWithFormat:@"Horizontal Measurement from outer to inner lens edge"]; 
     break; 
    case 8: 
     Question.text = [NSString stringWithFormat:@"In the Boxing Measurement system for lenses and frames the DBL represents:"]; 
     Right1.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Distance Between Lenses"]; 
     Answer2.text = [NSString stringWithFormat:@"Minimum Blank Size"]; 
     Answer3.text = [NSString stringWithFormat:@"Vertical Measurement from outer to inner lens edge"]; 
     Answer4.text = [NSString stringWithFormat:@"Horizontal Measurement from outer to inner lens edge"]; 
     break; 
    case 9: 
     Question.text = [NSString stringWithFormat:@"In the Boxing Measurement system for lenses and frames the ED represents:"]; 
     Right2.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Distance Between Lenses"]; 
     Answer2.text = [NSString stringWithFormat:@"Minimum Blank Size"]; 
     Answer3.text = [NSString stringWithFormat:@"Vertical Measurement from outer to inner lens edge"]; 
     Answer4.text = [NSString stringWithFormat:@"Horizontal Measurement from outer to inner lens edge"]; 
     break; 
    case 10: 
     Question.text = [NSString stringWithFormat:@"In the Boxing Measurement system for lenses and frames the B represents:"]; 
     Right3.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Distance Between Lenses"]; 
     Answer2.text = [NSString stringWithFormat:@"Minimum Blank Size"]; 
     Answer3.text = [NSString stringWithFormat:@"Vertical Measurement from outer to inner lens edge"]; 
     Answer4.text = [NSString stringWithFormat:@"Horizontal Measurement from outer to inner lens edge"]; 
     break; 
    case 11: 
     Question.text = [NSString stringWithFormat:@"The geometric center line in the Boxing Measurement system is:"]; 
     Right4.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Distance Between Lenses"]; 
     Answer2.text = [NSString stringWithFormat:@"A Measurement"]; 
     Answer3.text = [NSString stringWithFormat:@"B Measurement"]; 
     Answer4.text = [NSString stringWithFormat:@"C Measurement"]; 
     break; 
    case 12: 
     Question.text = [NSString stringWithFormat:@"In the Boxing System for lenses and frames the C represents:"]; 
     Right1.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Distance of lens through geometric center"]; 
     Answer2.text = [NSString stringWithFormat:@"Minimum blank size"]; 
     Answer3.text = [NSString stringWithFormat:@"Vertical measurement from outer to inner lens edge"]; 
     Answer4.text = [NSString stringWithFormat:@"Horizontal measurement"]; 
     break; 
    case 13: 
     Question.text = [NSString stringWithFormat:@"In the Boxing System for lenses and frames the DBC represents:"]; 
     Right2.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Distance between lenses"]; 
     Answer2.text = [NSString stringWithFormat:@"Distance between centers"]; 
     Answer3.text = [NSString stringWithFormat:@"Vertical measurement from outer to inner lens edge"]; 
     Answer4.text = [NSString stringWithFormat:@"Horizontal measurement"]; 
     break; 
    case 14: 
     Question.text = [NSString stringWithFormat:@"In the Boxing System for lenses and frames the DBC can also represent:"]; 
     Right3.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Distance between lenses"]; 
     Answer2.text = [NSString stringWithFormat:@"Minimum blank size"]; 
     Answer3.text = [NSString stringWithFormat:@"Frame PD"]; 
     Answer4.text = [NSString stringWithFormat:@"Horizontal measurement from outer to inner lens edge"]; 
     break; 
    case 15: 
     Question.text = [NSString stringWithFormat:@"In the Boxing System for lenses and frames if there is no prism the MRP is the same as:"]; 
     Right4.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Distance between lenses"]; 
     Answer2.text = [NSString stringWithFormat:@"Minimum blank size"]; 
     Answer3.text = [NSString stringWithFormat:@"Geometric center"]; 
     Answer4.text = [NSString stringWithFormat:@"Optical center"]; 
     break; 
    case 16: 
     Question.text = [NSString stringWithFormat:@"On a finished lens, this vertical measurement is from the top of the segment to the lowest part of the lens edge?"]; 
     Right1.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Segment Height"]; 
     Answer2.text = [NSString stringWithFormat:@"Segment Inset"]; 
     Answer3.text = [NSString stringWithFormat:@"Decentration"]; 
     Answer4.text = [NSString stringWithFormat:@"Vertex Compensation"]; 
     break; 
    case 17: 
     Question.text = [NSString stringWithFormat:@"This measurement is the difference between the Distance PD and the Near Pd?"]; 
     Right2.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Segment Height"]; 
     Answer2.text = [NSString stringWithFormat:@"Segment Inset"]; 
     Answer3.text = [NSString stringWithFormat:@"Decentration"]; 
     Answer4.text = [NSString stringWithFormat:@"Vertex Compensation"]; 
     break; 
    case 18: 
     Question.text = [NSString stringWithFormat:@"The horizontal distance between the MRP (Major Reference Point) and the GC(Geometric Center)?"]; 
     Right3.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Segment Height"]; 
     Answer2.text = [NSString stringWithFormat:@"Segment Inset"]; 
     Answer3.text = [NSString stringWithFormat:@"Decentration"]; 
     Answer4.text = [NSString stringWithFormat:@"Vertex Compensation"]; 
     break; 
    case 19: 
     Question.text = [NSString stringWithFormat:@"The correction for the difference between where the eyeglasses are actually worn and the distance the patient is refracted?"]; 
     Right4.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Segment Height"]; 
     Answer2.text = [NSString stringWithFormat:@"Segment Inset"]; 
     Answer3.text = [NSString stringWithFormat:@"Decentration"]; 
     Answer4.text = [NSString stringWithFormat:@"Vertex Compensation"]; 
     break; 
    case 20: 
     Question.text = [NSString stringWithFormat:@"This is the distance from the cornea to the back surface of the eyeglass lens:"]; 
     Right1.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Vertex Distance"]; 
     Answer2.text = [NSString stringWithFormat:@"Base Curve"]; 
     Answer3.text = [NSString stringWithFormat:@"NPD"]; 
     Answer4.text = [NSString stringWithFormat:@"Vertex Compensation"]; 
     break; 
    case 21: 
     Question.text = [NSString stringWithFormat:@"According to the textbook, what is the proper bifocal placement?"]; 
     Right2.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Segment top at pupil center"]; 
     Answer2.text = [NSString stringWithFormat:@"Segment top at lower eyelid"]; 
     Answer3.text = [NSString stringWithFormat:@"Segment top at lowest part of the pupil"]; 
     Answer4.text = [NSString stringWithFormat:@"Segment top above pupil center"]; 
     break; 
    case 22: 
     Question.text = [NSString stringWithFormat:@"According to the textbook, what is the proper trifocal placement?"]; 
     Right3.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Segment top at pupil center"]; 
     Answer2.text = [NSString stringWithFormat:@"Segment top at lower eyelid"]; 
     Answer3.text = [NSString stringWithFormat:@"Segment top at lowest part of the pupil"]; 
     Answer4.text = [NSString stringWithFormat:@"Segment top above pupil center"]; 
     break; 
    case 23: 
     Question.text = [NSString stringWithFormat:@"What must be done first to properly measure bifocal height?"]; 
     Right4.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Determine vertex distance"]; 
     Answer2.text = [NSString stringWithFormat:@"Take patients PD"]; 
     Answer3.text = [NSString stringWithFormat:@"Clean the frame"]; 
     Answer4.text = [NSString stringWithFormat:@"Adjust the frame"]; 
     break; 
    case 24: 
     Question.text = [NSString stringWithFormat:@"This part of the lensometer holds the lens against the lens stop:"]; 
     Right1.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Lens Clamp"]; 
     Answer2.text = [NSString stringWithFormat:@"Lens Table"]; 
     Answer3.text = [NSString stringWithFormat:@"Power Drum"]; 
     Answer4.text = [NSString stringWithFormat:@"Axis Drum"]; 
     break; 
    case 25: 
     Question.text = [NSString stringWithFormat:@"This part of the lensometer provides a flat horizontal surface for the eyeglasses to rest:"]; 
     Right2.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Lens Clamp"]; 
     Answer2.text = [NSString stringWithFormat:@"Lens Table"]; 
     Answer3.text = [NSString stringWithFormat:@"Power Drum"]; 
     Answer4.text = [NSString stringWithFormat:@"Axis Drum"]; 
     break; 
    case 26: 
     Question.text = [NSString stringWithFormat:@"This part of the lensometer consists of a wheel that turns and is calibrated in diopters:"]; 
     Right3.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Lens Clamp"]; 
     Answer2.text = [NSString stringWithFormat:@"Lens Table"]; 
     Answer3.text = [NSString stringWithFormat:@"Power Drum"]; 
     Answer4.text = [NSString stringWithFormat:@"Axis Drum"]; 
     break; 
    case 27: 
     Question.text = [NSString stringWithFormat:@"This part of the lensometer consists of a wheel that turns and is calibrated in degrees:"]; 
     Right4.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Lens Clamp"]; 
     Answer2.text = [NSString stringWithFormat:@"Lens Table"]; 
     Answer3.text = [NSString stringWithFormat:@"Power Drum"]; 
     Answer4.text = [NSString stringWithFormat:@"Axis Drum"]; 
     break; 
    case 28: 
     Question.text = [NSString stringWithFormat:@"This tool is used to measure lens thickness:"]; 
     Right1.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Lens Calipers"]; 
     Answer2.text = [NSString stringWithFormat:@"End Piece Angling Plier"]; 
     Answer3.text = [NSString stringWithFormat:@"Distometer"]; 
     Answer4.text = [NSString stringWithFormat:@"Geneva Lens Clock"]; 
     break; 
    case 29: 
     Question.text = [NSString stringWithFormat:@"This tool can be used to adjust pantoscopic tilt:"]; 
     Right2.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Lens Calipers"]; 
     Answer2.text = [NSString stringWithFormat:@"End Piece Angling Plier"]; 
     Answer3.text = [NSString stringWithFormat:@"Lens Axis Turning Plier"]; 
     Answer4.text = [NSString stringWithFormat:@"Geneva Lens Clock"]; 
     break; 
    case 30: 
     Question.text = [NSString stringWithFormat:@"This tool can be used to adjust temple spread:"]; 
     Right3.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Lens Calipers"]; 
     Answer2.text = [NSString stringWithFormat:@"End Piece Angling Plier"]; 
     Answer3.text = [NSString stringWithFormat:@"Padded Holding Plier"]; 
     Answer4.text = [NSString stringWithFormat:@"Lens Axis Turning Plier"]; 
     break; 
    case 31: 
     Question.text = [NSString stringWithFormat:@"This tool can be used to cut the end of screws:"]; 
     Right4.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Round Plier"]; 
     Answer2.text = [NSString stringWithFormat:@"End Piece Angling Plier"]; 
     Answer3.text = [NSString stringWithFormat:@"Padded Holding Plier"]; 
     Answer4.text = [NSString stringWithFormat:@"Chappel plier"]; 
     break; 
    case 32: 
     Question.text = [NSString stringWithFormat:@"This is a chart of horizontal and vertical intersecting lines used to analyze changes in the macula."]; 
     Right1.hidden = NO; 
     Wrong2.hidden = NO; 
     Wrong3.hidden = NO; 
     Wrong4.hidden = NO; 
     Answer1.text = [NSString stringWithFormat:@"Amslers Grid"]; 
     Answer2.text = [NSString stringWithFormat:@"Duochrome Test"]; 
     Answer3.text = [NSString stringWithFormat:@"Cover/Uncover Test"]; 
     Answer4.text = [NSString stringWithFormat:@"Schirmers Test"]; 
     break; 





    default: 
     break; 



}

刚刚发布完整的案例，出现错误。随着错误消息“预期的表达”该生产线是-(IBAction)OphthalmicInstruments:(id)sender{

来源

2013-06-24 MrsOptic

你可以发表代码，其中的表达预期错误发生也请添加完整的代码开关的情况下（上面的代码只是一个部分）。 –

顺便说一句 - 在Objective-C中用一个大写字母命名类是一个非常常见的约定。方法名称和变量名称应该使用小写字母。它让你的代码更容易被大家阅读。 – rmaddy

第二个音符 - 摆脱所有对'stringWithFormat：'的调用。简单地做：'Question.text = @“一些文本”;'。实际上只有格式字符串时才使用'stringWithFormat'。 – rmaddy

它只是语法错误，检查分号&大括号。

来源

2013-06-24 04:57:45

我在该行上面的代码中丢失了大括号。谢谢。 – MrsOptic

switch(){ 

case 1: { 

} 

case 2: { 

} 

}

尝试把你的情况下，在{..}，这对我最后一次合作。

来源

2013-06-24 04:25:24 BaSha

如果块的第一行声明一个变量，那么只需要给定'case'语句的花括号。 – rmaddy

iOS错误信息：中断或个案陈述不在循环或开关中

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