How to Relaunch Your Unity Android Application

RestartAndroidProcess.cs

/// <summary>
/// Restarts our Android application and re-opens the process.
/// </summary>
private static void RestartAndroidProcess()
{
	using AndroidJavaClass unityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer");

	const int kIntent_FLAG_ACTIVITY_CLEAR_TASK = 0x00008000;
	const int kIntent_FLAG_ACTIVITY_NEW_TASK = 0x10000000;

	AndroidJavaObject currentActivity = unityPlayer.GetStatic<AndroidJavaObject>("currentActivity");
	AndroidJavaObject packageManager = currentActivity.Call<AndroidJavaObject>("getPackageManager");
	AndroidJavaObject intent = packageManager.Call<AndroidJavaObject>("getLaunchIntentForPackage",
		Application.identifier);

	// Start new activity
	intent.Call<AndroidJavaObject>("setFlags",
		kIntent_FLAG_ACTIVITY_NEW_TASK | kIntent_FLAG_ACTIVITY_CLEAR_TASK);
	currentActivity.Call("startActivity", intent);
	currentActivity.Call("finish");
	
	// Kill current process
	AndroidJavaClass process = new AndroidJavaClass("android.os.Process");
	int pid = process.CallStatic<int>("myPid");
	process.CallStatic("killProcess", pid);
}