highscorescreen.java

Source-DeathFlight手机游戏,死亡飞行,适合初学者学习.

import javax.microedition.lcdui.*;

public class HighScoreScreen extends Form implements CommandListener{
	
	private Flight midlet;
	
	private Command backCommand = new Command("Back", Command.BACK, 1);
	private Command resetCommand = new Command("Reset", Command.SCREEN, 1);
	
	private Score score;
	
	StringItem stringItem;
	
	public HighScoreScreen(Flight midlet, Score score){
		super("High Score");
		
		this.midlet = midlet;
		this.score = score;
		
		stringItem = new StringItem(null,"");
		append(stringItem);
		
		addCommand(backCommand);
		addCommand(resetCommand);
		setCommandListener(this);
	}
	
	public void commandAction(Command c,Displayable d){
		if(c ==  backCommand){
			midlet.showMainMenu();
			return;
		}
		if(c == resetCommand){
			processMenu();
		}
	}
	
	public void init()throws Exception{
		score.loadScores();
		stringItem.setText(buildHighScore());
	}
	
	public void processMenu(){
		try{
			score.reset();
			midlet.showMainMenu();
		}catch(Exception e){
			e.printStackTrace();
		}
	}
	
	private String buildHighScore(){
		String result = "";
		String[] names = score.getNames();
		int[] values = score.getValues();
		for(int i=0;i<names.length;i++){
			result = result + names[i] + " " + values[i] + "\n";
		}
		return result;
	}
	
	public boolean isHighScore(int score) throws Exception{
		return this.score.isHighScore(score);
	}
	
}