Android 列表数据写入到本地Excel文件（包括图片）
16lz
2021-01-23
要想用此demo，需要在build.gradle文件中加入：implementation group: 'net.sourceforge.jexcelapi', name: 'jxl', version: '2.6.12'
如果是便已无法通过，还是自己手动下载jxl.jar包吧
MainActivity.java
public class MainActivity extends Activity { private Button btn; private String excelPath; private File excelFilePath; private File excelFile; private Bitmap bitmap; private List list = new ArrayList(); private static final String TEST_PICTURE_PATH = "mnt/sdcard/testdata"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); PermissionRequest.requestPermission(this); BitmapFactory.Options options = new BitmapFactory.Options(); options.inSampleSize = 2; bitmap = BitmapFactory.decodeFile("mnt/sdcard/testdata/test.png", options); initData(); btn = findViewById(R.id.excel); btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { excelPath = TEST_PICTURE_PATH + File.separator + "test.xls"; excelFilePath = new File(TEST_PICTURE_PATH); if (!excelFilePath.exists()) { excelFilePath.mkdirs(); } excelFile = new File(excelPath); if (!excelFile.exists()) { try { excelFile.createNewFile(); } catch (IOException e) { e.printStackTrace(); } } exportData(list); } }); } private void initData() { for (int i = 1; i <= 100; i++) { ResultModel model = new ResultModel(); model.setNumber(i); model.setAnswer_view(bitmap); model.setAnswer_text(i); model.setVerify(i); model.setResult("〇"); list.add(model); } } /** * @param list 导出数据 */ public static void exportData(List list) { WritableWorkbook wwb = null; try { wwb = Workbook.createWorkbook(new File("mnt/sdcard/testdata/test.xls")); } catch (IOException e) { e.printStackTrace(); Log.d("dd", "exportData: " + e.toString()); } if (wwb != null) { //创建底部的选项卡 传参是选项卡的名称 和 选型卡的索引 WritableSheet writableSheet = wwb.createSheet("test", 0); //创建excel的表头的信息 String[] topic = {"序号", "图片", "答案", "作答", "评分"}; for (int i = 0; i < topic.length; i++) { //横向的在单元格中填写数据 Label labelC = new Label(i, 0, topic[i]); try { writableSheet.addCell(labelC); } catch (WriteException e) { e.printStackTrace(); } } //从实体中遍历数据并将数据写入excel文件中 ResultModel account; ArrayList li; for (int j = 0; j < list.size(); j++) { account = list.get(j); li = new ArrayList<>(); li.add(account.getNumber() + ""); li.add(account.getAnswer_view() + ""); li.add(account.getAnswer_text() + ""); li.add(account.getVerify() + ""); li.add(account.getResult() + ""); int k = 0; for (int i = 0; i < li.size(); i++) { if (k == 1) { try { WritableImage image = new WritableImage(k, j + 1, 1, 1, saveBitmapFile(account.getAnswer_view(), "/mnt/sdcard/testdata/test.png")); writableSheet.addImage(image); } catch (Exception e) { Log.d(TAG, "exportData: error " + e.toString()); } } else { Label labelC = new Label(k, j + 1, li.get(i)); try { writableSheet.addCell(labelC); } catch (WriteException e) { e.printStackTrace(); Log.d(TAG, "exportData: error " + e.toString()); } } k++; } } } //将文件从内存写入到文件当中 try { wwb.write(); wwb.close(); } catch (IOException e) { e.printStackTrace(); } catch (WriteException e) { e.printStackTrace(); } } public static File saveBitmapFile(Bitmap bitmap, String filepath) { File file = new File(filepath); try { BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(file)); bitmap.compress(Bitmap.CompressFormat.JPEG, 100, bos); bos.flush(); bos.close(); } catch (IOException e) { e.printStackTrace(); } return file; }} 本文是一个很好地Android数据传入本地Excel的demo，里面有整型，字符串和Bitmap类型
不过要提前将测试图片保存到：mnt/sdcard/testdata/test.png
希望对大家有帮助
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