AnimationTimer stop（）方法不会停止

Question

我知道可以使用this.stop函数从正在重写的handle()方法中停止正在进行的动画。下面的代码来自游戏，在游戏结束并显示警报后，它应该停止运行动画。相反，警报弹出无数次。

new AnimationTimer() { 
    @Override 
    public void handle(long now) { 
    if (game.isInProgress()) { 
     nextFrame(); 
    } else { 
     if (game.isWon()) { 
     Alert alert = new Alert(AlertType.INFORMATION); 
     alert.setTitle("Game Over!"); 
     alert.setHeaderText("Congratulations, you have won the game!"); 
     alert.setContentText(toolbarModule + ": " + game.getLevel().getScoreObject().getScore() 
      + ", Time Remaining: " + toolbarModule.getTimeString() + "\n Rank: " 
      + toolbarModule.getRankString()); 
     alert.show(); 
     } else { 
     Alert alert = new Alert(AlertType.INFORMATION); 
     alert.setTitle("Game Over!"); 
     alert.setHeaderText("Sadly, you have lost the game!"); 
     alert.setContentText("Time passed: " + game.getLevel().getTimeLimit()); 
     alert.show(); 
     } 
     new EndScene(game, stage); 
     this.stop(); 
    } 
    } 
}.start(); 

我在做什么错？

任何帮助，将大大赞赏，

Answer 1

我figuered出来。其实是合乎逻辑的（通常是）。 alert.show函数等待用户确认弹出窗口。与此同时，handle()方法多次运行该方法。我需要的是运行一次这个弹出窗口。我通过包含警报和条件来做到这一点。像这样：

 if (!victoryMessageReceived) { 
     victoryMessageReceived = true; 
     if (game.isWon()) { 
      Alert alert = new Alert(AlertType.INFORMATION); 
      alert.setTitle("Game Over!"); 
      alert.setHeaderText("Congratulations, you have won the game!"); 
      alert.setContentText(toolbarModule + ": " 
       + game.getLevel().getScoreObject().getScore() + ", Time Remaining: " 
       + toolbarModule.getTimeString() + "\n Rank: " + toolbarModule.getRankString()); 
      alert.show(); 
     } else { 
      Alert alert = new Alert(AlertType.INFORMATION); 
      alert.setTitle("Game Over!"); 
      alert.setHeaderText("Sadly, you have lost the game!"); 
      alert.setContentText("Time passed: " + game.getLevel().getTimeLimit()); 
      alert.show(); 
     }   
     } 

谢谢大家的努力！