如何在android中创建excel文件？

我必须以编程方式创建一个excel文件。是否有创建excel文件或其他方式的API？
2011年11月7日编辑
我试着从这个链接创建一个Excel电子表格
，我在

workbook.write（）得到了NullPointerException

，使用此选项，我可以在SD卡上创建excel文件，但当我使用MS office 2007打开该excel文件时，我收到了无法读取文件的

消息

这里的堆栈跟踪，
ExcelStudy
是我使用
WriteExcel
类的活动

W/System.err(  235): java.lang.NullPointerException
W/System.err(  235):    at jxl.biff.StringHelper.getUnicodeBytes(StringHelper.java:133)
W/System.err(  235):    at jxl.biff.FontRecord.getData(FontRecord.java:289)
W/System.err(  235):    at jxl.biff.WritableRecordData.getBytes(WritableRecordData.java:71)
W/System.err(  235):    at jxl.write.biff.File.write(File.java:132)
W/System.err(  235):    at jxl.biff.Fonts.write(Fonts.java:110)
W/System.err(  235):    at jxl.write.biff.WritableWorkbookImpl.write(WritableWorkbookImpl.java:699)
W/System.err(  235):    at comm.study.code.WriteExcel.write(WriteExcel.java:49)
W/System.err(  235):    at comm.study.code.ExcelStudy.createExcelFile(ExcelStudy.java:64)
W/System.err(  235):    at comm.study.code.ExcelStudy$1.onClick(ExcelStudy.java:47)
W/System.err(  235):    at android.view.View.performClick(View.java:2364)
W/System.err(  235):    at android.view.View.onTouchEvent(View.java:4179)
W/System.err(  235):    at android.widget.TextView.onTouchEvent(TextView.java:6541)
W/System.err(  235):    at android.view.View.dispatchTouchEvent(View.java:3709)
W/System.err(  235):    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884)
W/System.err(  235):    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884)
W/System.err(  235):    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884)
W/System.err(  235):    at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1659)
W/System.err(  235):    at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1107)
W/System.err(  235):    at android.app.Activity.dispatchTouchEvent(Activity.java:2061)
W/System.err(  235):    at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1643)
W/System.err(  235):    at android.view.ViewRoot.handleMessage(ViewRoot.java:1691)
W/System.err(  235):    at android.os.Handler.dispatchMessage(Handler.java:99)
W/System.err(  235):    at android.os.Looper.loop(Looper.java:123)
W/System.err(  235):    at android.app.ActivityThread.main(ActivityThread.java:4363)
W/System.err(  235):    at java.lang.reflect.Method.invokeNative(Native Method)
W/System.err(  235):    at java.lang.reflect.Method.invoke(Method.java:521)
W/System.err(  235):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
W/System.err(  235):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
W/System.err(  235):    at dalvik.system.NativeStart.main(Native Method)

您可以尝试（请参阅以获取一些帮助），也可以写入或读取Excel文件。
首先，您必须转到此链接，从中可以下载最新的库：


在此之后，在onCreate或onResume方法上输入以下代码：

HSSFWorkbook workbook = new HSSFWorkbook();
HSSFSheet firstSheet = workbook.createSheet("Sheet No: 1");
HSSFSheet secondSheet = workbook.createSheet("Sheet No: 2");
HSSFRow rowA = firstSheet.createRow(0);
HSSFCell cellA = rowA.createCell(0);
cellA.setCellValue(new HSSFRichTextString("Sheet One"));
HSSFRow rowB = secondSheet.createRow(0);
HSSFCell cellB = rowB.createCell(0);
cellB.setCellValue(new HSSFRichTextString("Sheet two"));
FileOutputStream fos = null;
try {
    String str_path = Environment.getExternalStorageDirectory().toString();
    File file ;
    file = new File(str_path, getString(R.string.app_name) + ".xls");
    fos = new FileOutputStream(file);
    workbook.write(fos);
} catch (IOException e) {
    e.printStackTrace();
} finally {
    if (fos != null) {
        try {
            fos.flush();
            fos.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    Toast.makeText(MainActivity.this, "Excel Sheet Generated", Toast.LENGTH_SHORT).show();
}

//要查看此excel文件，请转到eclipse->SDCard Path->excel.xls->Pull it->see it中的文件资源管理器。
bean类

class Bean {
        String initial, firstName, middleName, lastName;

        Bean(String initial, String firstName, String middleName, String lastName) {
            this.initial = initial;
            this.firstName = firstName;
            this.middleName = middleName;
            this.lastName = lastName;
        }

        public String getInitial() {
            return initial;
        }

        public String getFirstName() {
            return firstName;
        }

        public String getMiddleName() {
            return middleName;
        }

        public String getLastName() {
            return lastName;
        }

    }

创建ExcelSheet的代码

添加单元格（新标签（0,0，“名称首字母”）

sheet.addCell（新标签（列号、行号、数据字符串））

文件目录，sd，文件；
可写工作簿；
void createExcelSheet（）{
字符串csvFile=“ExcelsheetName.xls”；
sd=Environment.getExternalStorageDirectory（）；
目录=新文件（sd.getAbsolutePath（））；
文件=新文件（目录，csvFile）；
WorkbookSettings wbSettings=新建WorkbookSettings（）；
设置语言环境（新语言环境（“en”、“en”））；
试一试{
工作簿=工作簿.create工作簿（文件，wbSettings）；
createFirstSheet（）；
createSecondSheet（）；
//关闭光标
workbook.write（）；
workbook.close（）；
}捕获（例外e）{
e、 printStackTrace（）；
}
}
void createFirstSheet（）{
试一试{
List listdata=new ArrayList（）；
add（新Bean（“mr”、“firstName1”、“middleName1”、“lastName1”））；
add（新Bean（“mr”、“firstName1”、“middleName1”、“lastName1”））；
add（新Bean（“mr”、“firstName1”、“middleName1”、“lastName1”））；
//Excel工作表名称。0（数字）表示第一张工作表
WritableSheet=workbook.createSheet（“sheet1”，0）；
//列和行标题
添加单元格（新标签（0,0，“名称首字母”）；
表1.addCell（新标签（1,0，“名字”）；
表1.addCell（新标签（2,0，“中间名”）；
新标签（3,0，“姓氏”）；
对于（int i=0；i

从Excel工作表读取数据

 public void readDataFromExcelSheet() {
        List<Bean> listOfBean = new ArrayList<>();
        try {
            String filename = "ExcelsheetName.xls";
            // Creating Input Stream
            File sd = Environment.getExternalStorageDirectory();
            File directory = new File(sd.getAbsolutePath());
            File file = new File(directory, filename);
            Workbook workbook = null;
            WorkbookSettings ws = new WorkbookSettings();
            ws.setGCDisabled(true);
            workbook = Workbook.getWorkbook(file, ws);

            int noOfSheets = workbook.getNumberOfSheets();//this is return how many sheets available in excelsheet
            String sheetsNames[] = workbook.getSheetNames();//this is return all sheets names available in excelsheet
            for (int x = 0; x < noOfSheets; x++)//here take all sheets
            {
                Sheet sheet = workbook.getSheet(x);//here i taken first sheet
                int rowCount = sheet.getRows();//count total number of row or data in that sheet
                for (int i = 0; i < rowCount; i++) {//take every row data
                    Cell[] column = sheet.getRow(i);//take all data of one row

                /*
                 for taking one by one column data 
                */
                    for (int j = 0; j < column.length; j++) {//take every column data of row
                        System.out.print("" + column[j].getContents() + "\t");//take one by one data
                    }
                /*
                 for taking column data  
                */
                    listOfBean.add(new Bean(column[0].getContents(), column[1].getContents(), column[2].getContents(), column[3].getContents()));

                }

//                if you want take different data from different sheets then use switch case
                Sheet sheet1;
                int rowCount1;
                switch (x) {
                    case 0:
                        //write code for sheet 0 read data
                        sheet1 = workbook.getSheet(0);//here i taken first sheet
                        rowCount1 = sheet1.getRows();//count total number of row or data in that sheet
                        for (int i = 0; i < rowCount1; i++) {//take every row data
                            Cell[] column = sheet1.getRow(i);//take all data of one row
                            listOfBean.add(new Bean(column[0].getContents(), column[1].getContents(), column[2].getContents(), column[3].getContents()));
                        }
                        break;
                    case 1:
                        //write code for sheet 1 read data
                        sheet1 = workbook.getSheet(1);//here i taken first sheet
                        rowCount1 = sheet1.getRows();//count total number of row or data in that sheet
                        for (int i = 0; i < rowCount1; i++) {//take every row data
                            Cell[] column = sheet1.getRow(i);//take all data of one row
                            listOfBean.add(new Bean(column[0].getContents(), column[1].getContents(), column[2].getContents(), column[3].getContents()));
                        }
                        break;
                }


            }

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

public void readDataFromExcelSheet（）{
List listOfBean=new ArrayList（）；
试一试{
字符串filename=“ExcelsheetName.xls”；
//创建输入流
文件sd=Environment.getExternalStorageDirectory（）；
文件目录=新文件（sd.getAbsolutePath（））；
文件=新文件（目录、文件名）；
工作簿=空；
WorkbookSettings ws=新的WorkbookSettings（）；
ws.setGCDisabled（true）；
工作簿=工作簿.get工作簿（文件，ws）；
int noOfSheets=workbook.getNumberOfSheets（）；//这是返回excelsheet中可用的工作表数量
String sheetsNames[]=workbook.getSheetNames（）；//返回Excel工作表中可用的所有工作表名称
对于（intx=0；x public void readDataFromExcelSheet() {
        List<Bean> listOfBean = new ArrayList<>();
        try {
            String filename = "ExcelsheetName.xls";
            // Creating Input Stream
            File sd = Environment.getExternalStorageDirectory();
            File directory = new File(sd.getAbsolutePath());
            File file = new File(directory, filename);
            Workbook workbook = null;
            WorkbookSettings ws = new WorkbookSettings();
            ws.setGCDisabled(true);
            workbook = Workbook.getWorkbook(file, ws);

            int noOfSheets = workbook.getNumberOfSheets();//this is return how many sheets available in excelsheet
            String sheetsNames[] = workbook.getSheetNames();//this is return all sheets names available in excelsheet
            for (int x = 0; x < noOfSheets; x++)//here take all sheets
            {
                Sheet sheet = workbook.getSheet(x);//here i taken first sheet
                int rowCount = sheet.getRows();//count total number of row or data in that sheet
                for (int i = 0; i < rowCount; i++) {//take every row data
                    Cell[] column = sheet.getRow(i);//take all data of one row

                /*
                 for taking one by one column data 
                */
                    for (int j = 0; j < column.length; j++) {//take every column data of row
                        System.out.print("" + column[j].getContents() + "\t");//take one by one data
                    }
                /*
                 for taking column data  
                */
                    listOfBean.add(new Bean(column[0].getContents(), column[1].getContents(), column[2].getContents(), column[3].getContents()));

                }

//                if you want take different data from different sheets then use switch case
                Sheet sheet1;
                int rowCount1;
                switch (x) {
                    case 0:
                        //write code for sheet 0 read data
                        sheet1 = workbook.getSheet(0);//here i taken first sheet
                        rowCount1 = sheet1.getRows();//count total number of row or data in that sheet
                        for (int i = 0; i < rowCount1; i++) {//take every row data
                            Cell[] column = sheet1.getRow(i);//take all data of one row
                            listOfBean.add(new Bean(column[0].getContents(), column[1].getContents(), column[2].getContents(), column[3].getContents()));
                        }
                        break;
                    case 1:
                        //write code for sheet 1 read data
                        sheet1 = workbook.getSheet(1);//here i taken first sheet
                        rowCount1 = sheet1.getRows();//count total number of row or data in that sheet
                        for (int i = 0; i < rowCount1; i++) {//take every row data
                            Cell[] column = sheet1.getRow(i);//take all data of one row
                            listOfBean.add(new Bean(column[0].getContents(), column[1].getContents(), column[2].getContents(), column[3].getContents()));
                        }
                        break;
                }


            }

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

implementation 'org.apache.poi:poi:3.17'
implementation 'org.apache.poi:poi-ooxml:3.17'

public class MainActivity extends AppCompatActivity {
private WorkSheet workSheet;
private Button button;
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    button = findViewById(R.id.create_excel_sheet);
    final String path  = "ExternalFilePath";
    
    button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            try {
                workSheet = new WorkSheet.Builder(getApplicationContext(), path)
                        .setSheet(List<Object>)
                        .writeSheet();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    });


}}