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我正試圖做一個程序來獲取用戶從鍵盤輸入的JFrame
窗口。所以如果用戶輸入一個單詞,語句類應該看看單詞是否在那裏然後打印出來。Java KeyListener不起作用
因爲它現在我不能讓語句類工作惠特鍵盤類。 我真的不想用這種方式來獲得鍵盤輸入,所以我認爲你會知道更好的方式,將是篦。
問題:修復,以便語句類獲取鍵盤輸入。
這是結類:
public class Statements {
Keyboard input;
public Statements(Keyboard input){
this.input = input;
}
public void tick() {
if(input.up){
System.out.println("inventory");
}
}
這是鍵盤類,這是如果你想使用鍵盤上的所有字符創建密鑰聽衆的好方法。但這是我知道如何的唯一方法。
public class Keyboard implements KeyListener {
private boolean[] keys = new boolean[200];
public boolean up, down, left, right, i;
public void update(){
up = keys[KeyEvent.VK_UP] || keys[KeyEvent.VK_W];
down = keys[KeyEvent.VK_DOWN] || keys[KeyEvent.VK_S];
left = keys[KeyEvent.VK_LEFT] || keys[KeyEvent.VK_A];
right = keys[KeyEvent.VK_RIGHT] || keys[KeyEvent.VK_D];
//all the char on the keyboard
...
...
i = keys[KeyEvent.VK_I];
}
public void keyPressed(KeyEvent e) {
keys[e.getKeyCode()] = true;
}
public void keyReleased(KeyEvent e) {
keys[e.getKeyCode()] = false;
}
public void keyTyped(KeyEvent e) {
}
}
主類
private static final long serialVersionUID = 1L;
public static final int WIDTH = 100;
public static final int HEIGHT = WIDTH/16 * 9;
public static final int SCALE = 3;
private boolean running = false;
private Thread thread;
private JFrame frame;
private Keyboard key;
private Statments stat;
public Main() {
Dimension size = new Dimension(WIDTH * SCALE, HEIGHT * SCALE);
setPreferredSize(size);
frame = new JFrame();
key = new Keyboard();
stat = new Statments(key);
addKeyListener(key);
}
public synchronized void start() {
running = true;
thread = new Thread(this, "Display");
thread.start();
}
public synchronized void stop() {
running = false;
try {
thread.join();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
public void run() {
while (running) {
frame.requestFocus();
tick();
}
stop();
}
public void tick(){
key.update();
stat.tick();
}
public static void main(String args[]) {
Main main = new Main();
main.frame.setResizable(false);
main.frame.setTitle("game");
main.frame.add(main);
main.frame.pack();
main.frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
main.frame.setLocationRelativeTo(null);
main.frame.setVisible(true);
main.start();
}
}
對我而言,我只使用JPanels。 'JPanel'的'JFrame'唯一容器/包裝器。我知道'setFocusable'適用於'JPanel' –
不知道,請發佈您的答案,生病刪除我的 –
大聲笑,好吧,虐待改變我的答案與您的提示 –