Unity3d制作Loading场景进度条

     public void LoadGame()
     {
         StartCoroutine(StartLoading("001"));
     }

     private IEnumerator StartLoading(string sceneName)
     {
         int displayProgress = 0;
         int toProgress = 0;
         AsyncOperation op = Application.LoadLevelAsync(sceneName);   //异步对象
         op.allowSceneActivation = false;
         while (op.progress < 0.9f)
         {
             toProgress = (int)op.progress * 100;
             while (displayProgress < toProgress)
             {
                 ++displayProgress;
                 SetLoadingPercentage(displayProgress);
                 yield return new WaitForEndOfFrame();
             }
         }

         toProgress = 100;
         while (displayProgress < toProgress)
         {
             ++displayProgress;
             SetLoadingPercentage(displayProgress);
             yield return new WaitForEndOfFrame();
         }
         op.allowSceneActivation = false;
     }

     private void SetLoadingPercentage(int DisplayProgress)     //设置显示进度
     {
         proLoadingBar.value = DisplayProgress * 0.01f;
         labProgress.text = DisplayProgress.ToString() + "%";
     }
 }

效果如下：（.gif图可能会有点卡，但是实际效果是完全很顺畅不会卡的。）