# AttachCurrentThread()

> Attaches the current thread to a Java (Dalvik) VM.

## Definition

* **Type:** Method
* **Namespace:** [UnityEngine](/engine/6000.5/script-reference/unityengine.md)
* **Assembly:** UnityEngine.AndroidJNIModule

```csharp
public static int AttachCurrentThread()
```

### Returns

| Type                                                       | Description |
| ---------------------------------------------------------- | ----------- |
| [int](https://learn.microsoft.com/dotnet/api/system.int32) |             |

### Remarks

A thread must be attached to the VM before any other JNI calls can be made.

Returns 0 on success; returns a negative number on failure.

Additional Resources: [Java Native Interface Specification (Oracle)](http://download.oracle.com/javase/1.5.0/docs/guide/jni/spec/jniTOC.html)