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POgeting error while creating an instance of a class in framework in ios
 

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  1. POgeting error while creating an instance of a class in framework in ios
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    <p>I am new to iOS development ,, i am facing a problem while creating a instance of a class .</p> <p>i have a framework named as unknown.framework and it has a class Abc.h </p> <p>when i am creating a a instane of that class , application is crashing .</p> <p>code is .</p> <pre><code>IN secondAppDelegate.h #import &lt;unknownToolkit/unknown.h&gt; @interface secondAppDelegate : UIResponder &lt;UIApplicationDelegate&gt; { Abc *method; } @property (strong, nonatomic)Abc *method; In secondAppDelegate.m Abc *method = [Abc sharedInstance]; [method callAnInstanceMethod]; </code></pre> <p>Where unknown.frmaework is a private framework and Abc.h is class.</p> <pre><code>and the error report is : 2013-05-17 14:48:58.574 AbcDemo[1832:12b03] -[__NSArrayI mapUsingBlock:usingFilter:]: unrecognized selector sent to instance 0x8220a70 2013-05-17 14:48:58.600 AbcDemo[1832:12b03] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSArrayI mapUsingBlock:usingFilter:]: unrecognized selector sent to instance 0x8220a70' *** First throw call stack: (0x1d49012 0x1335e7e 0x1dd44bd 0x1d38bbc 0x1d3894e 0x5ab60 0x21f19 0x2bda 0x277157 0x277747 0x27894b 0x289cb5 0x28abeb 0x27c698 0x1ca4df9 0x1ca4ad0 0x1cbebf5 0x1cbe962 0x1cefbb6 0x1ceef44 0x1ceee1b 0x27817a 0x279ffc 0x28dd 0x2805) libc++abi.dylib: terminate called throwing an exception </code></pre> <p>and the code is crashing in iphonesimiulator -> user/include -> dispactch -> once.h</p> <p>and the line ,where code is crashing is :</p> <pre><code>_dispatch_once(dispatch_once_t *predicate, dispatch_block_t block) { if (DISPATCH_EXPECT(*predicate, ~0l) != ~0l) { dispatch_once(predicate, block); } } </code></pre> <p>Please help me </p> <p>thanks in advance.</p>
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    1. COIt says very clear that you are trying to call a selector mapUsingBlock: on a NSArray which doesnt have this selector method.
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      1. USWesley
 

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