super.onCreate();//模拟数据集合students = new ArrayList<Strudent>();for (int i = 1; i <= 10; i++) { students.add(new Strudent("小红"+i,"女","1"+i)); }exportExcel(this);

/** * 导出excel * @param view */public void exportExcel(App app) { file = new File(getSDPath() + "/Record"); makeDir(file); ExcelUtil.initExcel(file.toString() + "/成绩表.xls", title); fileName = getSDPath() + "/Record/成绩表.xls"; System.out.println("=======================" + fileName);ExcelUtil.writeObjListToExcel(getRecordData(), fileName, this); }/** * 将数据集合 转化成ArrayList<ArrayList<String>> * @return */private ArrayList<ArrayList<String>> getRecordData() { recordList = new ArrayList(); for (int i = 0; i <students.size(); i++) { Strudent student = students.get(i); ArrayList<String> beanList = new ArrayList<String>();beanList.add(student.id); beanList.add(student.name);beanList.add(student.sex); recordList.add(beanList); } return recordList; } private String getSDPath() {File sdDir = null; boolean sdCardExist = Environment.getExternalStorageState().equals( android.os.Environment.MEDIA_MOUNTED); if (sdCardExist) { sdDir = Environment.getExternalStorageDirectory(); } String dir = sdDir.toString(); return dir; } public void makeDir(File dir) {if (!dir.getParentFile().exists()) {makeDir(dir.getParentFile()); } dir.mkdir(); }

package com.hg.excel;import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;import android.content.Context;
import android.widget.Toast;import jxl.Workbook;
import jxl.WorkbookSettings;
import jxl.format.Colour;
import jxl.write.Label;
import jxl.write.WritableCell;
import jxl.write.WritableCellFormat;
import jxl.write.WritableFont;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
import jxl.write.WriteException;public class ExcelUtil {public static WritableFont arial14font = null; public static WritableCellFormat arial14format = null; public static WritableFont arial10font = null; public static WritableCellFormat arial10format = null; public static WritableFont arial12font = null; public static WritableCellFormat arial12format = null; public final static String UTF8_ENCODING = "UTF-8"; public final static String GBK_ENCODING = "GBK";/** * 单元格的格式设置 字体大小 颜色 对齐方式、背景颜色等... */ public static void format() { try { arial14font = new WritableFont(WritableFont.ARIAL, 14, WritableFont.BOLD); arial14font.setColour(jxl.format.Colour.LIGHT_BLUE); arial14format = new WritableCellFormat(arial14font); arial14format.setAlignment(jxl.format.Alignment.CENTRE); arial14format.setBorder(jxl.format.Border.ALL,jxl.format.BorderLineStyle.THIN); arial14format.setBackground(jxl.format.Colour.VERY_LIGHT_YELLOW); arial10font = new WritableFont(WritableFont.ARIAL, 10, WritableFont.BOLD); arial10format = new WritableCellFormat(arial10font); arial10format.setAlignment(jxl.format.Alignment.CENTRE); arial10format.setBorder(jxl.format.Border.ALL,jxl.format.BorderLineStyle.THIN); arial10format.setBackground(Colour.GRAY_25); arial12font = new WritableFont(WritableFont.ARIAL, 10); arial12format = new WritableCellFormat(arial12font); arial10format.setAlignment(jxl.format.Alignment.CENTRE);//对齐格式 arial12format.setBorder(jxl.format.Border.ALL,jxl.format.BorderLineStyle.THIN); //设置边框 } catch (WriteException e) {e.printStackTrace(); } } /** * 初始化Excel * @param fileName * @param colName */ public static void initExcel(String fileName, String[] colName) { format(); WritableWorkbook workbook = null; try { File file = new File(fileName); if (!file.exists()) {file.createNewFile(); } workbook = Workbook.createWorkbook(file); WritableSheet sheet = workbook.createSheet("成绩表", 0); //创建标题栏 sheet.addCell((WritableCell) new Label(0, 0, fileName,arial14format)); for (int col = 0; col < colName.length; col++) {sheet.addCell(new Label(col, 0, colName[col], arial10format)); } sheet.setRowView(0,340); //设置行高         workbook.write(); } catch (Exception e) {e.printStackTrace(); } finally {if (workbook != null) {try {workbook.close(); } catch (Exception e) {e.printStackTrace(); } } } } @SuppressWarnings("unchecked") public static <T> void writeObjListToExcel(List<T> objList,String fileName, Context c) {if (objList != null && objList.size() > 0) {WritableWorkbook writebook = null; InputStream in = null; try { WorkbookSettings setEncode = new WorkbookSettings(); setEncode.setEncoding(UTF8_ENCODING); in = new FileInputStream(new File(fileName)); Workbook workbook = Workbook.getWorkbook(in); writebook = Workbook.createWorkbook(new File(fileName),workbook); WritableSheet sheet = writebook.getSheet(0); // sheet.mergeCells(0,1,0,objList.size()); //合并单元格 // sheet.mergeCells() for (int j = 0; j < objList.size(); j++) {ArrayList<String> list = (ArrayList<String>) objList.get(j); for (int i = 0; i < list.size(); i++) { sheet.addCell(new Label(i, j + 1, list.get(i),arial12format)); if (list.get(i).length() <= 5){ sheet.setColumnView(i,list.get(i).length()+8); //设置列宽 }else { sheet.setColumnView(i,list.get(i).length()+5); //设置列宽
                            } } sheet.setRowView(j+1,350); //设置行高
                        } writebook.write(); Toast.makeText(c, "导出到手机存储中文件夹Record成功", Toast.LENGTH_SHORT).show(); } catch (Exception e) {e.printStackTrace(); } finally {if (writebook != null) {try { writebook.close(); } catch (Exception e) { e.printStackTrace(); } } if (in != null) {try { in.close(); } catch (IOException e) {e.printStackTrace(); } } } } } }
//                    }
//                }
//        }
//        }
//    }
//
//
//
//
//}

    private ArrayList<ArrayList<String>> recordList; private List<Strudent> students; private static String[] title = { "编号","姓名","性别","年龄","班级","数学","英语","语文" }; private File file; private String fileName;