应用程序崩溃按钮 IB

Question

当我像这样向我的单元格添加一个按钮时，它工作正常，但是当我在 IB 中添加它时，我遇到了上面的日志崩溃。任何想法 ？感谢四位您的回答

UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[button addTarget:self 
           action:@selector(goToGeoloc)
 forControlEvents:UIControlEventTouchDown];

[button setTitle:@"Show View" forState:UIControlStateNormal];
button.frame = CGRectMake(218.0, 8.0, 45.0, 45.0);
[cell addSubview:button];

`崩溃日志：

warning: Attempting to create USE_BLOCK_IN_FRAME variable with block that isn't in the frame.
warning: Attempting to create USE_BLOCK_IN_FRAME variable with block that isn't in the frame.
(gdb) bt
#0  0x02c65a93 in objc_msgSend ()
#1  0x00000001 in ?? ()
#2  0x005596c8 in -[UIControl sendAction:to:forEvent:] ()
#3  0x0055bb4a in -[UIControl(Internal) _sendActionsForEvents:withEvent:] ()
#4  0x0055a6f7 in -[UIControl touchesEnded:withEvent:] ()
#5  0x00747070 in _UIGestureRecognizerUpdateObserver ()
#6  0x02aebd1b in __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ ()
#7  0x02a80987 in __CFRunLoopDoObservers ()
#8  0x02a49c17 in __CFRunLoopRun ()
#9  0x02a49280 in CFRunLoopRunSpecific ()
#10 0x02a491a1 in CFRunLoopRunInMode ()
#11 0x031f72c8 in GSEventRunModal ()
#12 0x031f738d in GSEventRun ()
#13 0x004ddb58 in UIApplicationMain ()

Answer 1

 [cell.contentView addSubview:button];