轉(zhuǎn)自[https://blog.csdn.net/ericshen880412/article/details/107208149?spm=1001.2014.3001.55...
NSTimer 循環(huán)引用問(wèn)題 使用此方法創(chuàng)建,會(huì)形成循環(huán)引用,即使在dealloc中調(diào)用[self.timer invalidate]以及self.timer = nil;也...
為什么不執(zhí)行test方法 ?performSelector :withObject:afterDelay: 本質(zhì)是一個(gè)定時(shí)器,且當(dāng)前在子線程執(zhí)行performSelector...