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# setActivationPolicy(_:)

Attempts to modify the app’s activation policy.

```
func setActivationPolicy(_ activationPolicy: NSApplication.ActivationPolicy) -> Bool
```

## Parameters

`activationPolicy`

The desired activation policy.

## Return Value

<doc://com.apple.documentation/documentation/Swift/true> if the policy switch succeded; otherwise, <doc://com.apple.documentation/documentation/Swift/false>.

## Discussion

You can set any activation policy in macOS 10.9 and later; in macOS 10.8 and earlier, you can only set the activation policy to  `NSApplicationActivationPolicyProhibited` or `NSApplicationActivationPolicyRegular`.

---

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