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ios实现代码只让执行一次
- (void)viewdidload { [super viewdidload]; // do any additional setup after loading the view, typically from a nib. [self performselector:@selector(wangmumu:) withobject:@"100" afterdelay:1]; } - (void) wangmumu:(nsstring *)han{ static dispatch_once_t hanwanjie; //只执行一次 dispatch_once(&hanwanjie, ^{ nslog(@"12345678910"); }); int niha = [han intvalue] - 1; if (niha == 10) { return; } [self performselector:@selector(hanwanjie:) withobject:[nsstring stringwithformat:@"%d",niha] afterdelay:1]; }
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iOS 使用UITextField自定义搜索框 实现用户输入完之后“实时搜索”功能
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