UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom]; [button sia_addActionForControlEvents:UIControlEventTouchUpInside usingBlock:^(UIEvent *event) { NSLog(@"%s", __PRETTY_FUNCTION__); }]; UIControlEventを指定して登録します。通常はbuttonのインスタンスが解放されればBlockも解放されますが、明示的に解除した場合はsia_addActionForControlEvents:usingBlock:の戻り値を取っておきsia_removeAction:forControlEvents:に渡して解除します。 UIControlのcallbackは引数が1つのactio
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