Android 导入导出excel xls、xlsx

1.导入依赖

implementation group: 'org.apache.poi', name: 'poi-ooxml', version: '3.17'
implementation group: 'org.apache.xmlbeans', name: 'xmlbeans', version: '3.1.0'
implementation 'javax.xml.stream:stax-api:1.0'
implementation 'com.fasterxml:aalto-xml:1.2.2'

工具类

package com.example.exportfile;import android.content.ContentUris;
import android.content.Context;
import android.database.Cursor;
import android.graphics.Canvas;
import android.graphics.pdf.PdfDocument;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.provider.DocumentsContract;
import android.provider.MediaStore;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.formula.eval.NumberEval;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellType;
import org.apache.poi.ss.usermodel.CellValue;
import org.apache.poi.ss.usermodel.FormulaEvaluator;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;public class SheetHelper {static String TAG = "<<< SheetHelper >>>";/*** 导出Excel** @param title           标题，配合 DeviceInfo 按需传入* @param listData        导出行数据* @param fileDir         导出文件夹* @param fileName        导出文件名* @param context         activity上下文* @param fileNameReplace 文件名称存在时，是否需要替换* @return*/public static boolean exportExcel(String[] title, List<DeviceInfo> listData, String fileDir, String fileName, Context context, boolean fileNameReplace) {if (TextUtils.isEmpty(fileDir) || TextUtils.isEmpty(fileName) || listData == null) {Log.e(TAG, " 导出" + "入参不合规");return false;}try {// 创建excel xlsx格式Workbook wb = new XSSFWorkbook();// 创建工作表Sheet sheet = wb.createSheet();//创建行对象Row row = sheet.createRow(0);// 设置有效数据的行数和列数int colNum = title.length;   // String[] title = {"序号", "设备号", "手机品牌", "最新位置", "换机换卡次数", "应用安装数量", "卸载应用次数", "违规app个数"};for (int i = 0; i < colNum; i++) {sheet.setColumnWidth(i, 20 * 256);  // 显示20个字符的宽度  列宽Cell cell1 = row.createCell(i);//第一行cell1.setCellValue(title[i]);}// 导入数据for (int rowNum = 0; rowNum < listData.size(); rowNum++) {// 之所以rowNum + 1 是因为要设置第二行单元格row = sheet.createRow(rowNum + 1);// 设置单元格显示宽度row.setHeightInPoints(28f);// DeviceInfo 这个是我的业务类，这个是根据业务来进行填写数据DeviceInfo bean = listData.get(rowNum);for (int j = 0; j < title.length; j++) {Cell cell = row.createCell(j);//要和title[]一一对应switch (j) {case 0://序号cell.setCellValue(bean.getRow());break;case 1://设备idcell.setCellValue(bean.getDeviceId());break;case 2://手机品牌cell.setCellValue(bean.getPhoneBrand());break;case 3://最新位置cell.setCellValue(bean.getLatestLocation());break;case 4://换机换卡次数cell.setCellValue(bean.getChangeSum());break;case 5://应用安装数量cell.setCellValue(bean.getInstallAppSum());break;case 6://卸载应用次数cell.setCellValue(bean.getUninstallAppSum());break;case 7://违规app个数cell.setCellValue(bean.getViolationAppSum());break;}}}String s = Environment.getExternalStorageDirectory() + "/" + fileDir;
//            String mSDCardFolderPath = context.getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS) + "/" + fileDir;File dir = new File(s);//判断文件是否存在if (!dir.exists()) {//不存在则创建dir.mkdirs();}File excel = new File(dir, fileName + ".xlsx");if (!excel.exists()) {excel.createNewFile();} else {if (fileNameReplace) {//String newFileName = getNewFileName(getFiles(dir.getPath(), new ArrayList<>()), excel.getPath());String newFileName = getXlsxNewFileName(excel);excel = new File(newFileName);excel.createNewFile();}}Log.e(TAG, " 导出路径" + excel.getPath().toString());FileOutputStream fos = new FileOutputStream(excel);wb.write(fos);wb.close();fos.flush();fos.close();return true;} catch (IOException e) {Log.e("ExpressExcle", "exportExcel", e);return false;}}/*** 导入excel** @param fileName 本地文件路径*/public static List<String> readExcel(String fileName) {Log.d(TAG, "！！！导入路径！！！" + fileName);if (TextUtils.isEmpty(fileName)) {Log.d(TAG, "！！！导入失败！！！" + " 路径为空 ");return null;}try {InputStream inputStream = new FileInputStream(fileName);Workbook workbook;if (fileName.endsWith(".xls")) {workbook = new HSSFWorkbook(inputStream);} else if (fileName.endsWith(".xlsx")) {workbook = new XSSFWorkbook(inputStream);} else {Log.d(TAG, "！！！导入失败！！！" + " 文件格式错误 ");return null;}int numberOfSheets = workbook.getNumberOfSheets();List<String> strings = new ArrayList<>();for (int u = 0; u < numberOfSheets; u++) {Sheet sheet = workbook.getSheetAt(u);//获取表int rowsCount = sheet.getPhysicalNumberOfRows();//获取行数int lastRowNum = sheet.getLastRowNum();//获取最后一行，，从0开始Log.d(TAG, "行数：" + (lastRowNum + 1));FormulaEvaluator formulaEvaluator = workbook.getCreationHelper().createFormulaEvaluator();for (int r = 0; r <= lastRowNum; r++) {String str = "";Row row = sheet.getRow(r);//拿到行对象if (row != null) {int physicalNumberOfCells = row.getPhysicalNumberOfCells();//获取该行可用的列数、short lastCellNum = row.getLastCellNum();//获取改行最后一列的列数int lastCell = lastCellNum;Log.d(TAG, "导入  第" + (r + 1) + "行最后一列：" + lastCell);for (int i = 0; i < lastCell; i++) {CellValue v0 = formulaEvaluator.evaluate(row.getCell(i));//获取单元格对象if (v0 != null) {CellType cellTypeEnum = v0.getCellTypeEnum();if (cellTypeEnum.getCode() == 1) {//文本类型str += v0.getStringValue() + "&&";} else if (cellTypeEnum.getCode() == 0) {//整数，小数类型
//                                    double numberValue = v0.getNumberValue();String stringValue = new NumberEval(v0.getNumberValue()).getStringValue();str += stringValue + "&&";} else {//其他类型，暂时不解析}}}Log.d(TAG, "导入  第" + (r + 1) + "行  内容：" + str);strings.add(str);} else {Log.d(TAG, "第 " + (r + 1) + " 行没有可用表格，跳过");continue;}}}workbook.close();return strings;} catch (IOException e) {e.printStackTrace();return null;}}/*** 导出PDF** @param view            要导出的view，如果view高度过高（超过一屏的高度），在改view外部套一层Scrollview即可* @param fileDir         导出文件夹* @param fileName        导出文件名称* @param fileNameReplace 文件名称存在时，是否需要替换* @return*/public static boolean createPdfFromView(View view, String fileDir, String fileName, boolean fileNameReplace) {try {if (view == null || fileDir == null || fileName == null) {Log.e(TAG, "导出PDF" + "入参为空");return false;}String s = Environment.getExternalStorageDirectory() + "/" + fileDir;
//            String mSDCardFolderPath = context.getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS) + "/" + fileDir;File dir = new File(s);//判断文件是否存在if (!dir.exists()) {//不存在则创建dir.mkdirs();}File pdfFile = new File(dir, fileName + ".PDF");if (!pdfFile.exists()) {pdfFile.createNewFile();} else {if (fileNameReplace) {String newFileName = getPDFNewFileName(pdfFile);pdfFile = new File(newFileName);pdfFile.createNewFile();}}PdfDocument document = new PdfDocument();//页对象PdfDocument.PageInfo pageInfo = new PdfDocument.PageInfo.Builder(view.getWidth(),view.getHeight(),1).create();// 开始页PdfDocument.Page page = document.startPage(pageInfo);//绘制页Canvas canvas = page.getCanvas();view.draw(canvas);//结束页document.finishPage(page);//TODO  需要的话，增加更多页//导出文档FileOutputStream os = null;Log.i(TAG, "导出PDF" + " 开始导出，导出路径：" + pdfFile);os = new FileOutputStream(pdfFile);document.writeTo(os);os.close();Log.i(TAG, "导出PDF" + " 导出成功");document.close();return true;} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();return false;}}private static String getXlsxNewFileName(File file) {if (file.exists()) {String newPath = file.getPath().substring(0, file.getPath().length() - 5) + "(1).xlsx";return getXlsxNewFileName(new File(newPath));} else {return file.getPath();}}private static String getPDFNewFileName(File file) {if (file.exists()) {String newPath = file.getPath().substring(0, file.getPath().length() - 4) + "(1).PDF";return getPDFNewFileName(new File(newPath));} else {return file.getPath();}}static class DeviceInfo {private String row;//行private String deviceId;//设备idprivate String phoneBrand;//手机品牌private String latestLocation;//最新位置private String changeSum;//换机换卡次数private String installAppSum;//应用安装数量private String uninstallAppSum;//卸载应用次数private String violationAppSum;//违规app个数public DeviceInfo() {}public String getRow() {return row;}public void setRow(String row) {this.row = row;}public String getDeviceId() {return deviceId;}public void setDeviceId(String deviceId) {this.deviceId = deviceId;}public String getPhoneBrand() {return phoneBrand;}public void setPhoneBrand(String phoneBrand) {this.phoneBrand = phoneBrand;}public String getLatestLocation() {return latestLocation;}public void setLatestLocation(String latestLocation) {this.latestLocation = latestLocation;}public String getChangeSum() {return changeSum;}public void setChangeSum(String changeSum) {this.changeSum = changeSum;}public String getInstallAppSum() {return installAppSum;}public void setInstallAppSum(String installAppSum) {this.installAppSum = installAppSum;}public String getUninstallAppSum() {return uninstallAppSum;}public void setUninstallAppSum(String uninstallAppSum) {this.uninstallAppSum = uninstallAppSum;}public String getViolationAppSum() {return violationAppSum;}public void setViolationAppSum(String violationAppSum) {this.violationAppSum = violationAppSum;}}
}

2.导出 xls 需要异步调用

核心代码：
boolean isSuccess = SheetHelper.exportExcel(title, deviceInfos, "应用痕迹导出文件夹", "导出测试", MainActivity.this, true);示例：List<SheetHelper.DeviceInfo> deviceInfos = new ArrayList<>();for (int i = 0; i < 20; i++) {SheetHelper.DeviceInfo deviceInfo = new SheetHelper.DeviceInfo();deviceInfo.setRow(String.valueOf(i + 1));//序号deviceInfo.setDeviceId("1531359236" + i);//设备iddeviceInfo.setPhoneBrand("华为" + i);//手机品牌deviceInfo.setLatestLocation("北京" + i);//最新位置deviceInfo.setChangeSum(String.valueOf(i));//换机换卡次数deviceInfo.setInstallAppSum(String.valueOf(i));//应用安装数量deviceInfo.setUninstallAppSum(String.valueOf(i));//卸载应用次数deviceInfo.setViolationAppSum(String.valueOf(i));//违规app个数deviceInfos.add(deviceInfo);}try {String[] PERMISSIONS_STORAGE = {Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE};int permission = ActivityCompat.checkSelfPermission(MainActivity.this, "android.permission.WRITE_EXTERNAL_STORAGE");if (permission != PackageManager.PERMISSION_GRANTED) {ActivityCompat.requestPermissions(MainActivity.this, PERMISSIONS_STORAGE, REQUEST_CODE);} else {
//                                boolean isSuccess = SheetHelper.exportExcel(phonebillExpressBeans, "应用痕迹导出文件夹", "导出测试", MainActivity.this);String[] title = {"序号", "设备号", "手机品牌", "最新位置", "换机换卡次数", "应用安装数量", "卸载应用次数", "违规app个数"};boolean isSuccess = SheetHelper.exportExcel(title, deviceInfos, "应用痕迹导出文件夹", "导出测试", MainActivity.this, true);runOnUiThread(new Runnable() {@Overridepublic void run() {if (isSuccess) {Toast.makeText(MainActivity.this, "导出成功", Toast.LENGTH_SHORT).show();} else {Toast.makeText(MainActivity.this, "导出失败", Toast.LENGTH_SHORT).show();}}});}} catch (Exception e) {e.printStackTrace();}}}).start();

3.导入需要异步调用

首先调用系统文件管理器Intent intent = new Intent(Intent.ACTION_GET_CONTENT);intent.setType("*/*");//设置类型，我这里是任意类型，任意后缀的可以这样写。intent.addCategory(Intent.CATEGORY_OPENABLE);startActivityForResult(intent, 1000);接受管理器选中的文件@Overrideprotected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {super.onActivityResult(requestCode, resultCode, data);try {if (resultCode == Activity.RESULT_OK && requestCode == 1000) {Uri uri = data.getData();//得到uri，后面就是将uri转化成file的过程。String absolutePath = FileChooseUtil.uriToPath(this, uri);Log.d("选择了文件", "文件路径：" + absolutePath);new Thread(new Runnable() {@Overridepublic void run() {List<String> strings = SheetHelper.readExcel(absolutePath);runOnUiThread(new Runnable() {@Overridepublic void run() {if (strings != null) {String str = "";for (String string : strings) {String[] split = string.split("&&");for (String s : split) {Log.i("拿到数据", s);str += s;}str += "\n";}mTv_content.setText(str);Toast.makeText(MainActivity.this, "导入成功", Toast.LENGTH_SHORT).show();} else {Toast.makeText(MainActivity.this, "导入失败", Toast.LENGTH_SHORT).show();}}});}}).start();}} catch (Exception e) {Toast.makeText(MainActivity.this, "导入异常", Toast.LENGTH_SHORT).show();e.printStackTrace();}}

产考：

Android 系统文件浏览器_钟情短发姑娘的博客-CSDN博客

4.注意：

需要读写权限

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

高版本动态申请权限

String[] PERMISSIONS_STORAGE = {Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE};
int permission = ActivityCompat.checkSelfPermission(this, "android.permission.WRITE_EXTERNAL_STORAGE");
if (permission != PackageManager.PERMISSION_GRANTED) {ActivityCompat.requestPermissions(this, PERMISSIONS_STORAGE, 1);
} else {
//logic
}

Android 10 有私密文件策略。解决：

res下新建xml文件夹，新建文件file_paths，文件内容如下

<resources><paths><root-pathname="root"path="" /><files-pathname="files"path="" /><cache-pathname="cache"path="" /><external-pathname="external"path="" /><external-files-pathname="external_file_path"path="" /><external-cache-pathname="external_cache_path"path="" /></paths>
</resources>

manifest application 注册fileprovider

<providerandroid:name="androidx.core.content.FileProvider"android:authorities="cn.xy.phonebilladmin.fileProvider"android:exported="false"android:grantUriPermissions="true"><meta-dataandroid:name="android.support.FILE_PROVIDER_PATHS"android:resource="@xml/file_paths" />
</provider>

sdk 29以上允许根目录新建文件

application 加上

android:requestLegacyExternalStorage="true"

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Android 导入导出excel xls、xlsx

1.导入依赖

工具类

2.导出 xls 需要异步调用

3.导入需要异步调用

4.注意：

需要读写权限

高版本动态申请权限

Android 10 有私密文件策略。解决：

sdk 29以上允许根目录新建文件

Android 导入导出excel xls、xlsx相关推荐

最新文章

热门文章

Android 导入导出excel xls、xlsx

1.导入依赖

工具类

2.导出 xls 需要异步调用

3.导入 需要异步调用

4.注意：

需要读写权限

高版本动态申请权限

Android 10 有私密文件策略。解决：

sdk 29以上 允许根目录新建文件

Android 导入导出excel xls、xlsx相关推荐

最新文章

热门文章

3.导入需要异步调用

sdk 29以上允许根目录新建文件