错误：“令牌上的语法错误”;“，预期的”为什么？ [英] ERROR: "Syntax error on token ";", , expected" Why?

问题描述

我现在很疯狂Googled这个，想到一些IDE错误。也许我是盲目的，看不到什么...但是这只是一个小时前。我注释掉了所有的代码，仍然不会编译。

  public class CityExplorerPoi extends Activity {
 
私人POI显示POI = null; 
私人MediaPlayer mPlayer; 
枚举audioState {
空闲，//空闲，未初始化
初始化，//初始化，未准备
准备好，//准备
开始，//播放
停止，//需要准备
暂停，//可以启动或停止
准备，// ... 
结束，//发布，无用
错误， // ... 
 PlaybackCompleted //可以从开始或停止
}; 
 audioState aState; <<<<<<<< ERROR 
 
 mPlayer = new MediaPlayer（）; 
} 
  

此代码在标有ERROR的行上有一个比较复杂的错误，说语法令牌错误;，，预期

使用枚举声明我试图没有;之后}。试过了在最后一个条目之后（PlaybackCompleted），仍然没有？

任何想法？我缺少什么：（

解决方案

这是实际的问题：

  mPlayer = new MediaPlayer（）; 
  

声明 - 但它不是在构造函数，方法或其他初始化程序中。不清楚为什么您不仅仅是在声明点分配一个值：

  private MediaPlayer mPlayer = new MediaPlayer（）; 
  

我还建议在枚举声明结尾处删除多余的分号。

I am going crazy now. Googled this, thought some kind of IDE bug. Maybe I am blind and can not see something...but this was OK just an hour ago. I commented out all of the code and still it won't compile.

public class CityExplorerPoi extends Activity {

private POI displayedPOI = null;
private MediaPlayer mPlayer;
enum audioState {
    Idle,               //Idle, not initialized
    Initialized,        //Initialized, not prepared
    Prepared,           //Prepared
    Started,            //Playing
    Stopped,            //needs preparing
    Paused,             //can be Started or Stopped
    Preparing,          //...
    End,                //Released, useless
    Error,              //...
    PlaybackCompleted   //can be Started from beginning or Stopped
};
audioState aState; <<<<<<<<<<ERROR

mPlayer = new MediaPlayer();
}

This code has a compilier error on line marked with ERROR saying Syntax error on token ";", , expected

With enum declaration I tried to go without ; after }. Tried to put ; after the last entry (PlaybackCompleted) and still nothing???

Any ideas? What am I missing :(

解决方案

This is the actual problem:

mPlayer = new MediaPlayer();

That's just a statement - but it's not in a constructor, method or other initializer. It's not clear why you don't just assign a value at the point of the declaration:

private MediaPlayer mPlayer = new MediaPlayer();

I'd also recommend removing the redundant semi-colon at the end of the enum declaration.

这篇关于错误：“令牌上的语法错误”;“，预期的”为什么？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！