How can I tell if an object has a key value observer attached
cocoa, key, key-value-observing, objective-c
Solution
Put a try catch around your removeObserver call
@try{
[someObject removeObserver:someObserver forKeyPath:somePath];
}@catch(id anException){
//do nothing, obviously it wasn't attached because an exception was thrown
}
Problem
If you tell an Objective-C object to `removeObservers:` for a key path and that key path has not been registered, it cracks a sad, like: Cannot remove an observer `<observerObject>` for the key path `"theKeyPath"` from `<objectbeingObserved>` because it is not registered as an observer. Is there a way to determine if an object has a registered observer, so i can do this ``` if (object has observer){ remove observer } else{ go on my merry way } ```