解决performSelector警告

第1种方法

SEL selector = NSSelectorFromString(@"setContentInsetAdjustmentBehavior:");
        
if ([tbView respondsToSelector:selector]) {
            
IMP imp = [tbView methodForSelector:selector];
void (*func)(id, SEL, NSInteger) = (void *)imp;
func(tbView, selector, 2);
            
// [tbView performSelector:@selector(setContentInsetAdjustmentBehavior:) withObject:@(2)];
}

第2种方法

SEL selector = NSSelectorFromString(@"setContentInsetAdjustmentBehavior:");
((void (*)(id, SEL))[tbView methodForSelector:selector])(tbView, selector);

第3种方法 忽略警告

#pragma clang diagnostic push  
#pragma clang diagnostic ignored "-Warc-performSelector-leaks"  
    [target performSelector: sel withObject: nil nil];  
#pragma clang diagnostic pop 

也可以定义一个宏

#define SuppressPerformSelectorLeakWarning(Stuff) \  
do { \  
_Pragma("clang diagnostic push") \  
_Pragma("clang diagnostic ignored \"-Warc-performSelector-leaks\"") \  
Stuff; \  
_Pragma("clang diagnostic pop") \  
} while (0)  

SuppressPerformSelectorLeakWarning(  
    [target performSelector:sel withObject:nil]  
);