欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  移动技术

Android 将数据写入Execl格式导出U盘、发送邮件

程序员文章站 2023-08-26 15:34:25
创建Execl、写入Execl数据、导入U盘 发送带附件的邮件 ......

创建Execl、写入Execl数据、导入U盘

public WriteExcel(Context mContext){
    this.mContext = mContext;
}

// 创建excel表
public void createExcel(File file) {
    deleteExcel(file);
    WritableSheet ws = null;
    try {
        if (!file.exists()) {
            wwb = Workbook.createWorkbook(file);//创建表
            ws = wwb.createSheet("sheet1", 0);//表名 页数

            // 在指定单元格插入数据
            Label lbl1 = new Label(0, 0, "标签1");
            Label lbl2 = new Label(1, 0, "标签2");
            Label lbl3 = new Label(2, 0, "标签3");
            Label lbl4 = new Label(3, 0, "标签4");

            ws.addCell(lbl1);
            ws.addCell(lbl2);
            ws.addCell(lbl3);
            ws.addCell(lbl4);

            // 从内存中写入文件中
            wwb.write();
            wwb.close();
        }

    } catch (Exception e) {
        e.printStackTrace();
    }
}

/**向Execl写入数据
* @Param ls List<map>数据
* @Param emeailPath
* @Param  file
*/
public void writeToExcel(List<Map<String,Object>> ls,String emeailPath,File file) {

    try {
        Workbook oldWwb = Workbook.getWorkbook(file);
        wwb = Workbook.createWorkbook(file, oldWwb);
        WritableSheet ws = wwb.getSheet(0);
        // 当前行数
        for (int i = 0; i < ls.size(); i++) {
            int row = ws.getRows();
            Label lab1 = new Label(0, row, ls.get(i).get("数据1") + "");
            Label lab2 = new Label(1, row, ls.get(i).get("数据2") + "");
            Label lab3 = new Label(2, row, ls.get(i).get("数据3") + "");
            Label lab4 = new Label(3, row, ls.get(i).get("数据4") + "");
            ws.addCell(lab1);
            ws.addCell(lab2);
            ws.addCell(lab3);
            ws.addCell(lab4);
        }
        // 从内存中写入文件中,只能刷一次
            wwb.write();
            wwb.close();
            if (emeailPath != null) {
                postEmail(emeailPath);
            }else{
                final ProgressDialog precentDialog=new  ProgressDialog(mContext);
                precentDialog.setMessage("导出U盘中...");
                precentDialog.setMax(100);
                precentDialog.setCanceledOnTouchOutside(false);
                precentDialog.show();
                new Thread(){
                    public void run() {
                        //等待进度条
                        for (int i = 0; i < 100; i++) {
                            try {
                                long l= (long) (Math.random()*200);
                                Thread.sleep(l);
                            } catch (InterruptedException e) {
                                e.printStackTrace();
                            }
                            precentDialog.setProgress(i);
                        }
                        precentDialog.dismiss();
                        handler.sendEmptyMessage(1);
                    };
                }.start();
            }
    }catch(Exception e){
                e.printStackTrace();
    }
}

@SuppressLint("HandlerLeak")
private Handler handler = new android.os.Handler() {
    @Override
    public void handleMessage(Message msg) {
        // TODO Auto-generated method stub
        super.handleMessage(msg);
        Toast.makeText(mContext,"导入U盘完成!",Toast.LENGTH_SHORT).show();
    }
};

//删除文件夹
private void deleteExcel(File file){
        if(file.exists()){
            file.delete();
        }
}

 

发送带附件的邮件

private void postEmail(String emailPath){
  SimpleDateFormat fmat=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");   String time=fmat.format(new Date(System.currentTimeMillis()));   String path=getExcelDir()+ File.separator+"CardInfo.xls";   File file = new File(path);   if(file.exists()){   Intent email = new Intent(android.content.Intent.ACTION_SEND);   email.setType("application/octet-stream");    //邮件接收者(数组,可以是多位接收者)    String[] emailReciver = new String[]{emailPath};    String emailTitle = "信息_"+time;    String emailContent = "核验信息";    //设置邮件地址    email.putExtra(android.content.Intent.EXTRA_EMAIL, emailReciver);    //设置邮件标题    email.putExtra(android.content.Intent.EXTRA_SUBJECT, emailTitle);    //设置发送的内容    email.putExtra(android.content.Intent.EXTRA_TEXT, emailContent);    //附件    email.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(file));   //调用系统的邮件系统    mContext.startActivity(Intent.createChooser(email, "请选择邮件发送软件"));   } }