util.java

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package com.cnxinshe.noteview;

import java.io.IOException;
import java.util.Vector;
import javax.microedition.lcdui.Font;
import javax.microedition.lcdui.Image;

/**
 *
 * @author 尹佳
 * QQ:387687685
 * email:[e-mail]
 */
public class Util {

    private static Font font = Font.getDefaultFont();
    //根据文件名得到对应的图片
    public static Image getImage(String name) {
        try {
            return Image.createImage("/" + name + ".png");
        } catch (IOException ex) {
            ex.printStackTrace();
        }
        return null;
    }
    //分割字符(分行 支持“\n”换行)
    public static Vector textToRows(int width, String src) {
        Vector list = new Vector();
        if (font.stringWidth(src) <= width) {
            list.addElement(src);
            return list;
        }
        //最多可以显示汉字数目
        StringBuffer sb = new StringBuffer();
        int len = src.length();
        int position = 0;
        int tempWidth = 0;
        while (position <= len) {
            tempWidth = font.stringWidth(sb.toString());
            while (tempWidth <= width - Platform.FONT_WIDHT_ZH) {
                if (position + 1 <= len && src.charAt(position) == '\\' && src.charAt(position + 1) == 'n') {

                    position += 2;
                    break;
                }
                char temp = src.charAt(position);
                sb.append(temp);
                tempWidth += font.charWidth(temp);
                position++;
                if (position >= len) {
                    break;
                }
            }
            list.addElement(sb.toString());
            sb.setLength(0);
            tempWidth = 0;
            if (position >= len) {
                break;
            }
        //     if (len - position >= 0 && len - position <= maxCount) {
        //        list.addElement(src.substring(position, len));
        //        break;
        //   }
        }
        return list;
    }
}