InvokeOnUnityMainThread(Action)
Invokes delegate on Android application's main thread.
Read time 1 minuteLast updated 2 days ago
Definition
- Type: Method
- Namespace: UnityEngine.Android
- Assembly: UnityEngine.AndroidJNIModule
public static void InvokeOnUnityMainThread(Action action)
Parameters
Remarks
This is useful if you receive a Java callback on the UI thread, but want to process result on Unity's main thread.
Additional Resources: Threads
Examples
using System.Threading;using UnityEngine;using UnityEngine.Android;public class JavaThreads : MonoBehaviour{ public class MyButtonListener : AndroidJavaProxy { public MyButtonListener() : base("android.view.View$OnClickListener") { } public void onClick(AndroidJavaObject view) { Debug.Log($"onClick called on UI thread ${Thread.CurrentThread.ManagedThreadId}"); AndroidApplication.InvokeOnUnityMainThread(() => { Debug.Log($"Delegating to main thread ${Thread.CurrentThread.ManagedThreadId}"); }); view.Dispose(); } } public void Start() { AndroidApplication.InvokeOnUIThread(() => { // Button can only be added on UI thread using var button = new AndroidJavaObject("android.widget.Button", AndroidApplication.currentActivity); button.Call("setText", "Hello World"); using var layoutParams = new AndroidJavaObject("android.widget.LinearLayout$LayoutParams", 500, 100); button.Call("setLayoutParams", layoutParams); button.Call("setOnClickListener", new MyButtonListener()); AndroidApplication.unityPlayer .Call<AndroidJavaObject>("getFrameLayout") .Call("addView", button); }); }}