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# os_activity_flag_t

Flags that adjust the behavior when you create an activity.

```
typedef enum { ... } os_activity_flag_t;
```

## Topics

### Adjusting Activity Creation

[`OS_ACTIVITY_FLAG_DEFAULT`](/documentation/os/os_activity_flag_t/OS_ACTIVITY_FLAG_DEFAULT)

Creates a new activity and associates it as a child of any provided parent activity.

[`OS_ACTIVITY_FLAG_DETACHED`](/documentation/os/os_activity_flag_t/OS_ACTIVITY_FLAG_DETACHED)

Creates a new activity that is independent of any provided parent activity.

[`OS_ACTIVITY_FLAG_IF_NONE_PRESENT`](/documentation/os/os_activity_flag_t/OS_ACTIVITY_FLAG_IF_NONE_PRESENT)

Creates a new activity only if one is not already present.


---

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