Unity3d+Android：分屏小窗还原分辨率触摸异常

小米OPPO手机小窗或者分屏再恢复全屏，游戏的分辨率触摸异常

小窗事件打印

01-07 11:32:48.604: E/SmallWindowStateHelper(3005): updateSmallWindowPackageName:sSmallWindowPackageName=null sLastValidSmallWindowPackageName=com.test.game

01-07 11:32:48.642: E/AppBackListener(22163): onTopAppChanged newApp=com.test.game,oldApp=com.miui.home,mPersistentApp=null,innerApp=false

01-07 11:32:50.147: E/Layer(991): [Bounds for - com.test.game/com.test.game.GameActivity#0] No local sync point found

Android监听onGlobalLayout

private void addGlobalLayoutListener()
{
   if(mUnityPlayer != null)
   {
      Log.i("GameActivity", "addGlobalLayoutListener mUnityPlayer != null");
       mUnityPlayer.getView().getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
         public void onGlobalLayout() {
            resetTouchInputOnLayoutChange();
         }
      });
   }
   else
   {
      Log.e("GameActivity", "addGlobalLayoutListener mUnityPlayer is null!!");
   }
}      

Unity得到Android消息重置分辨率

1. nScreenWidth + 1，触发update中的调整分辨率
2. 再还原

public void ResetResolutionOnLayoutChange()
    {
      CancelInvoke("FixResolutionCorutine");
      Invoke("FixResolutionCorutine", 2.0f);//2秒后再触发，避免闪屏
    }

    private void FixResolutionCorutine()
    {
      nScreenHeight = Screen.currentResolution.height;
      nScreenWidth = Screen.currentResolution.width;

      StartCoroutine(FixResolutionWhenReload());
    }

    static int nScreenWidth = 0;
    static int nScreenHeight = 0;
    IEnumerator FixResolutionWhenReload()
    {
      yield return new WaitForSeconds(0.1f);
#if UNITY_ANDROID
      Screen.SetResolution(nScreenWidth + 1, nScreenHeight, true);
      yield return new WaitForSeconds(3f);

      Screen.SetResolution(nScreenWidth, nScreenHeight, true);
#endif
    }      

Unity Update中修改分辨率

void Update()
{
          
            //分辨率调整
            if (adjustWidth != Screen.currentResolution.width || adjustHeight != Screen.currentResolution.height)
            {
                ResolutionAdjust();
            }
}

private static int adjustWidth = 0;
        private static int adjustHeight = 0;

        private static void ResolutionAdjust()
        {
            adjustWidth = Screen.currentResolution.width;
            adjustHeight = Screen.currentResolution.height;
            // 对于屏幕有悬浮菜单的手机进行特殊处理，目前只关注1080P的分辨率。
            if ((adjustWidth >= 1720 && adjustWidth < 1920) || (adjustHeight >= 880 && adjustHeight < 1080))
            {
                float aspect = (float)adjustWidth / (float)adjustHeight;
                adjustHeight = 720;
                adjustWidth = (int)(aspect * adjustHeight);

                Screen.SetResolution(adjustWidth, adjustHeight, true);
                return;
            }
            // 对分辨率大于1080P分辨率的手机，强制降到1080P。
            if (adjustWidth >= 1920 && adjustHeight >= 1080)
            {
                if (adjustWidth > 1920 || adjustHeight > 1080)
                {
                    float fRatio = (float)adjustWidth / (float)adjustHeight;
                    adjustHeight = 1080;
                    adjustWidth = (int)(fRatio * adjustHeight);
                    Screen.SetResolution(adjustWidth, adjustHeight, true);
                }
            }
        }