Wie excel in Android exportieren?

Question

Ich möchte String oder Objekt exportieren, um in Android zu übertreffen. Und ich habe keine gute Idee. Was soll ich tun? Bitte geben Sie mir einige Vorschläge über Android Export Excel.

Answer 1

Versuchen Sie, diese einfach excel: https://github.com/centic9/poi-on-android

Oder android5xlsx: https://github.com/andruhon/android5xlsx

Sie Studien sind Apache-POI auf Android wickeln und umpacken. Dies wäre ein guter Start, wenn Sie bereits mit Apache-POI vertraut sind.

Ich hoffe, dass das helfen kann, '.

Answer 2

1. hinzufügen gradle Importe

Kompilierung Gruppe: 'net.sourceforge.jexcelapi', Name: 'jxl', Version: '2.6'

1. Add Berechtigungen in der AndroidManifest.xml Datei

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

3. neue Klasse ExcelExporter erstellen:

   import android.os.Environment; 
   
   import java.io.File; 
   import java.util.Locale; 
   
   import jxl.Workbook; 
   import jxl.WorkbookSettings; 
   import jxl.write.Label; 
   import jxl.write.WritableSheet; 
   import jxl.write.WritableWorkbook; 
   
   public class ExcelExporter { 
   
       public static void export() { 
        File sd = Environment.getExternalStorageDirectory(); 
        String csvFile = "yourFile.xls"; 
   
        File directory = new File(sd.getAbsolutePath()); 
   
        //create directory if not exist 
        if (!directory.isDirectory()) { 
         directory.mkdirs(); 
        } 
        try { 
   
         //file path 
         File file = new File(directory, csvFile); 
         WorkbookSettings wbSettings = new WorkbookSettings(); 
         wbSettings.setLocale(new Locale(Locale.GERMAN.getLanguage(), Locale.GERMAN.getCountry())); 
         WritableWorkbook workbook; 
         workbook = Workbook.createWorkbook(file, wbSettings); 
   
         //Excel sheetA first sheetA 
         WritableSheet sheetA = workbook.createSheet("sheet A", 0); 
   
         // column and row titles 
         sheetA.addCell(new Label(0, 0, "sheet A 1")); 
         sheetA.addCell(new Label(1, 0, "sheet A 2")); 
         sheetA.addCell(new Label(0, 1, "sheet A 3")); 
         sheetA.addCell(new Label(1, 1, "sheet A 4")); 
   
         //Excel sheetB represents second sheet 
         WritableSheet sheetB = workbook.createSheet("sheet B", 1); 
   
         // column and row titles 
         sheetB.addCell(new Label(0, 0, "sheet B 1")); 
         sheetB.addCell(new Label(1, 0, "sheet B 2")); 
         sheetB.addCell(new Label(0, 1, "sheet B 3")); 
         sheetB.addCell(new Label(1, 1, "sheet B 4")); 
   
         // close workbook 
         workbook.write(); 
         workbook.close(); 
   
        } catch (Exception e) { 
         e.printStackTrace(); 
        } 
       } 
   } 
   

4. In Ihrem MainActivity fügen folgende Methode:

private void askForPermission(String permission, Integer requestCode) { 
    if (ContextCompat.checkSelfPermission(StartMenu.this, permission) 
      != PackageManager.PERMISSION_GRANTED) { 

     // Should we show an explanation? 
     if (ActivityCompat.shouldShowRequestPermissionRationale(
       StartMenu.this, permission)) { 

      //This is called if user has denied the permission before 
      //In this case I am just asking the permission again 
      ActivityCompat.requestPermissions(StartMenu.this, 
        new String[]{permission}, requestCode); 

     } else { 
      ActivityCompat.requestPermissions(StartMenu.this, 
        new String[]{permission}, requestCode); 
     } 
    } else { 
     Toast.makeText(this, permission + " is already granted.", 
       Toast.LENGTH_SHORT).show(); 
    } 
} 

5. einen Ort in den Export, zum Beispiel in auszuführen:

@Override 
protected void onResume() { 
    super.onResume(); 
    askForPermission(Manifest.permission.READ_EXTERNAL_STORAGE, READ_EXST); 
    askForPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE, WRITE_EXST); 
    ExcelExporter.export(); 
}