# AddBackgroundModes(BackgroundModesOptions)

> Add the Background Modes capability.

## Definition

* **Type:** Method
* **Namespace:** [UnityEditor.iOS.Xcode](/engine/6000.7/script-reference/unityeditor/ios/xcode.md)
* **Assembly:** UnityEditor.iOS.Extensions.Xcode

```csharp
public void AddBackgroundModes(BackgroundModesOptions options)
```

### Parameters

**** (\[BackgroundModesOptions]\(/engine/6000.7/script-reference/unityeditor/ios/xcode/backgroundmodesoptions)): Mask of [BackgroundModesOptions](/engine/6000.7/script-reference/unityeditor/ios/xcode/backgroundmodesoptions.md) to enable.

### Examples

```csharp
using UnityEditor;
using UnityEditor.Callbacks;
using UnityEditor.iOS.Xcode;

public class Sample_AddBackgroundModes  
{
    [PostProcessBuild]
    public static void OnPostprocessBuild(BuildTarget buildTarget, string pathToBuiltProject)
    {
        // Stop processing if build target isn't iOS

        if (buildTarget != BuildTarget.iOS)
            return;

        // Initialize PBXProject
        var projectPath = PBXProject.GetPBXProjectPath(pathToBuiltProject);
        PBXProject pbxProject = new PBXProject();
        pbxProject.ReadFromFile(projectPath);

        // Get Main target GUID
        string mainTargetGuid = pbxProject.GetUnityMainTargetGuid();

        // Check if there's already an entitlements file created and use it. If not, create a new file called Example.entitlements
        string entitlementsFile = pbxProject.GetBuildPropertyForAnyConfig(mainTargetGuid, "CODE_SIGN_ENTITLEMENTS");
        if (entitlementsFile == null)
        {
            entitlementsFile = string.Format("Example.entitlements");
        }

        // Initialize ProjectCapabilityManager
        ProjectCapabilityManager capabilityManager = new ProjectCapabilityManager(projectPath, entitlementsFile, targetGuid: mainTargetGuid);

        // Add 'Background Modes' capability and pass any BackgroundModes you want to enable
        capabilityManager.AddBackgroundModes(BackgroundModesOptions.BackgroundFetch | BackgroundModesOptions.LocationUpdates);

        // Call WriteToFile to save the changes to project file
        capabilityManager.WriteToFile();
    }

}
```