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"unrecognized selector sent to instance" error in Objective-C
    I created a button and added an action for it, but as soon as it invoked, I got this error: -[NSCFDictionary ... numberButtonClick:(id)sender{ NSLog(@"---"); } Question&Answers:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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