这个键绑定有什么问题？

public void buttons(){ 
    int c = WHEN_IN_FOCUSED_WINDOW; 

     Action right = new AbstractAction() { 
      public void actionPerformed(ActionEvent e) { 
       player.setVX(2); 
      } 
     }; 
     Action stop = new AbstractAction() { 
      public void actionPerformed(ActionEvent e) { 
       player.setVX(0); 
       player.setVY(0); 
      } 
     }; 

     Action up = new AbstractAction() { 
      public void actionPerformed(ActionEvent e) { 
       player.setVY(-2); 
      } 
     }; 
      getInputMap(c).put(KeyStroke.getKeyStroke("D"), "pressed"); 
      getActionMap().put("pressed", right); 
      getInputMap(c).put(KeyStroke.getKeyStroke("released D"), "released"); 
      getActionMap().put("released", stop); 
      getInputMap(c).put(KeyStroke.getKeyStroke("W"), "pressed"); 
      getActionMap().put("pressed", up); 
      getInputMap(c).put(KeyStroke.getKeyStroke("released W"), "released"); 
      getActionMap().put("released", stop); 

}

这是为什么，当我按W或D它上升...这个键绑定有什么问题？

问题是什么？

d应该向右走

来源

2013-02-27 user2113792

你确定它的键绑定，而不是'setVX'方法？为每个'actionPerformed'方法添加一个调试语句，以查看按下'D'是否实际上调用'setVX'（通过'actionPerformed'方法） – MadProgrammer 2013-02-27 03:50:41

是的，我的setVX是正确的，但是当我摆脱我的setVY动作执行 – user2113792 2013-02-27 04:01:16

我的VX的工作..我不知道为什么它工作时，我摆脱我的VY ation执行 – user2113792 2013-02-27 04:01:57

你在你的动作映射，因为你使用的是同一个动作命名为“按下”两个向上和正确的行动覆盖值。

getInputMap(c).put(KeyStroke.getKeyStroke("D"), "pressed"); 
getActionMap().put("pressed", right); 
getInputMap(c).put(KeyStroke.getKeyStroke("released D"), "released"); 
getActionMap().put("released", stop); 
getInputMap(c).put(KeyStroke.getKeyStroke("W"), "pressed"); 
getActionMap().put("pressed", up); // this overwrites the "pressed" action name above with the up action 
getInputMap(c).put(KeyStroke.getKeyStroke("released W"), "released"); 
getActionMap().put("released", stop); // similarly, this is redundant because you have the same thing above

下应该修复它：

getInputMap(c).put(KeyStroke.getKeyStroke("D"), "right"); 
getInputMap(c).put(KeyStroke.getKeyStroke("released D"), "stop"); 
getInputMap(c).put(KeyStroke.getKeyStroke("W"), "up"); 
getInputMap(c).put(KeyStroke.getKeyStroke("released W"), "stop"); 
getActionMap().put("right", right); 
getActionMap().put("up", up); 
getActionMap().put("stop", stop);

来源

2013-02-27 04:14:58 squawknull

这个键绑定有什么问题？

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