0
我知道我以前曾问过这个类似的问题,但我没有更多的答案......我想,只要我在比赛中输了,就会显示我的高分。下面是代码:libGDX:使用偏好进行高分
protected Preferences HighScore() {
if (score > highscore) {
prefs.putInteger("highscore", score);
this.highscore = prefs.getInteger("highscore", 0);
prefs.flush();
}
return prefs;
}
但是,如果我跑我的应用程序,只显示此错误:
Exception in thread "LWJGL Application" java.lang.NullPointerException
at de.firstdemo.game.states.PlayState.HighScore(PlayState.java:641)
at de.firstdemo.game.states.PlayState.render(PlayState.java:601)
at de.firstdemo.game.states.GameStateManager.render(GameStateManager.java:50)
at de.firstdemo.game.RiskyDemo.render(RiskyDemo.java:37)
at com.badlogic.gdx.backends.lwjgl.LwjglApplication.mainLoop(LwjglApplication.java:225)
at com.badlogic.gdx.backends.lwjgl.LwjglApplication$1.run(LwjglApplication.java:126)
我看了在网上也没有找到任何解决办法...
感谢您的回答! :)