来源: 互联网  发布时间: 2014-02-18

SimpleDateFormat的常用方法

/** parse()可以 把String型的字符串转换成特定格式的date类型 */
	public static void main(String[] args) {
		String dStr = "2001.12.12-08.23.21";
		Date d = null;
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy.MM.dd-HH.mm.ss");
		try {
			d = sdf.parse(dStr);
		} catch (ParseException pe) {
			System.out.println(pe.getMessage());
		}
		System.out.println(d);
		System.out.println(d.getTime());

		SimpleDateFormat myFmt = new SimpleDateFormat("yyyy年MM月dd日 HH时mm分ss秒");
		SimpleDateFormat myFmt1 = new SimpleDateFormat("yy/MM/dd HH:mm");
		SimpleDateFormat myFmt2 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		SimpleDateFormat myFmt3 = new SimpleDateFormat(
				"yyyy年MM月dd日 HH时mm分ss秒 E ");
		SimpleDateFormat myFmt4 = new SimpleDateFormat(
				"一年中的第 D 天 一年中第w个星期 一月中第W个星期 在一天中k时 z时区");
		Date now = new Date();
		System.out.println(myFmt.format(now));
		System.out.println(myFmt1.format(now));
		System.out.println(myFmt2.format(now));
		System.out.println(myFmt3.format(now));
		System.out.println(myFmt4.format(now));
		System.out.println(now.toString());

	}

继续俺的java基础学习....:)

    

    来源: 互联网  发布时间: 2014-02-18

Java中使用Lua脚本语言2
实现一个怪物的创建，把lua里的设定当作初始状态传给monstor,名字为sample monstor,防御10，攻击10，生命100

1.先导入lib--luajava-1.1.jar

import org.keplerproject.luajava.LuaState;
import org.keplerproject.luajava.LuaStateFactory;

public class Load{
LuaState luaState;
/**
* Constructor
* @param fileName File name with Lua .
*/
Load(final String fileName) {
this.luaState = LuaStateFactory.newLuaState();

this.luaState.openLibs();
   this.luaState.LdoFile(fileName);

}
/**
* Ends the use of Lua environment.
*/
void close() {
this.luaState.close();
}
/**
* Call a Lua inside the Lua to insert
* data into a Java object passed as parameter
* @param Name Name of Lua .
* @param obj A Java object.
*/
void run(String Name, Object obj) {
this.luaState.getGlobal(Name);
this.luaState.pushJavaObject(obj);
this.luaState.call(1,0);
}
}

public class Monster{
/* Info */
protected String race;
protected int defense;
protected int attack;
protected int life;
/* */
private Load ;
public Monster(String race) {
/* Loads Lua for this race.*/
this. = new Load(race+".lua");
/*Call Lua create .*/
.run("create", this);
}

public void setRace(String race) {
   this.race = race;
}
public String getRace() {
return race;
}
public int getDefense() {
return this.defense;
}
public void setDefense(int defense) {
this.defense = defense;
}
public int getLife() {
return this.life;
}
public void setLife(int life) {
this.life = life;
}
public void setAttack(int attack) {
this.attack = attack;
}
public int getAttack() {
return this.attack;
}
}

monstor.lua---

function create(monster)
monster:setRace("Sample Monster")
monster:setDefense(10)
monster:setAttack(10)
monster:setLife(100)
end

但总是抛出这个错误：

PANIC: unprotected error in call to Lua API (Invalid method call. No such method.)

不知为何，以后用到的时候再research.

已经查出来，原来在Monster类中少了个方法：

public void setRace(String race) {
   this.race = race;
}

怪不得会找不到，

要在一lua文件a.lua里导入其他的lua文件b.lua，用require "b"

如果要从lua中运算后得到返回参数，则需要做一下修改：在lua文件中改成：

function create(monster)
monster:setRace("Sample Monster")
monster:setDefense(10)
monster:setAttack(10)
monster:setLife(100)
return monster
end

在Load.java中的run改成如下：

void run(String Name, Object obj) {
   this.luaState.getGlobal(Name);
   this.luaState.pushJavaObject(obj);
   this.luaState.call(1, 1);// 一个参数，0个返回 
   try {
    Object object =luaState.getObjectFromUserdata(1);
   } catch (LuaException e) {
    e.printStackTrace();
   }
}

    

    来源: 互联网  发布时间: 2014-02-18

一些API的使用

   Paint paint = new Paint();
  // setColor 须在 setAlpha 方法之前设置，原因请参见 Android API
  paint.setColor(Color.GRAY);
  // 值越大越不透明
  paint.setAlpha(255);

 

//取得屏幕分辨率
DisplayMetrics dm = new DisplayMetrics();   
getWindowManager().getDefaultDisplay().getMetrics(dm);   

 

 

// 去掉标题栏
requestWindowFeature(Window.FEATURE_NO_TITLE);

 

// 设置为全屏
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,   WindowManager.LayoutParams.FLAG_FULLSCREEN);  

 

// 如何一个 service 被调用很多次，即 onStartCommand() 响应过很多个请求，
// 那么会相应的产生很多个 startId，比如：1，2，3 三个
// 那么，stopSelfResult(int startId) 只会在参数为 3 的时候才会真正地停止这个服务
// 另外，stopSelf() 是stopSelfResult()的老版本，推荐使用新版本
boolean result = stopSelfResult(msg.arg1);

 

/**
     * Show a notification while this service is running.
     */
    private void showNotification() {
        // In this sample, we'll use the same text for the ticker and the expanded notification
        CharSequence text = getText(R.string.local_service_started);

        // Set the icon, scrolling text and timestamp
        Notification notification = new Notification(R.drawable.stat_sample, text,
                System.currentTimeMillis());

        // The PendingIntent to launch our activity if the user selects this notification
        PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
                new Intent(this, LocalServiceActivities.Controller.class), 0);

        // Set the info for the views that show in the notification panel.
        notification.setLatestEventInfo(this, getText(R.string.local_service_label),
                       text, contentIntent);

        // Send the notification.
        // We use a layout id because it is a unique number.  We use it later to cancel.
        mNM.notify(R.string.local_service_started, notification);
    }