如何在android中創建excel文件？

Question

我想在android中創建一個excel文件。但是當我點擊按鈕來創建文件時，我的應用程序崩潰。

logcat的

02-12 17:43:48.287: E/dalvikvm(25342): Could not find class 'jxl.WorkbookSettings', referenced from method lmf.test7.MainActivity.onClick 
02-12 17:43:51.257: E/AndroidRuntime(25342): FATAL EXCEPTION: main 
02-12 17:43:51.257: E/AndroidRuntime(25342): java.lang.NoClassDefFoundError: jxl.WorkbookSettings 
02-12 17:43:51.257: E/AndroidRuntime(25342): at lmf.test7.MainActivity.onClick(MainActivity.java:44) 
02-12 17:43:51.257: E/AndroidRuntime(25342): at android.view.View.performClick(View.java:4212) 
02-12 17:43:51.257: E/AndroidRuntime(25342): at android.view.View$PerformClick.run(View.java:17476) 
02-12 17:43:51.257: E/AndroidRuntime(25342): at android.os.Handler.handleCallback(Handler.java:800) 
02-12 17:43:51.257: E/AndroidRuntime(25342): at android.os.Handler.dispatchMessage(Handler.java:100) 
02-12 17:43:51.257: E/AndroidRuntime(25342): at android.os.Looper.loop(Looper.java:194) 
02-12 17:43:51.257: E/AndroidRuntime(25342): at android.app.ActivityThread.main(ActivityThread.java:5371) 
02-12 17:43:51.257: E/AndroidRuntime(25342): at java.lang.reflect.Method.invokeNative(Native Method) 
02-12 17:43:51.257: E/AndroidRuntime(25342): at java.lang.reflect.Method.invoke(Method.java:525) 
02-12 17:43:51.257: E/AndroidRuntime(25342): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833) 
02-12 17:43:51.257: E/AndroidRuntime(25342): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600) 
02-12 17:43:51.257: E/AndroidRuntime(25342): at dalvik.system.NativeStart.main(Native Method) 

MainActivity

public class MainActivity extends Activity implements OnClickListener { 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     Button button = (Button) findViewById(R.id.button); 
     button.setOnClickListener(this); 
    } 

    @Override 
    public void onClick(View arg0) { 

     String Fnamexls="testfile" + ".xls"; 

     File sdCard = Environment.getExternalStorageDirectory(); 

     File directory = new File (sdCard.getAbsolutePath() + "/newfolder"); 
     directory.mkdirs(); 

     File file = new File(directory, Fnamexls); 

     WorkbookSettings wbSettings = new WorkbookSettings(); 
     wbSettings.setLocale(new Locale("en", "EN")); 

     WritableWorkbook workbook; 
     try { 
      int a = 1; 
      workbook = Workbook.createWorkbook(file, wbSettings); 
      WritableSheet sheet = workbook.createSheet("First Sheet", 0); 
      Label label = new Label(0, 2, "SECOND"); 
      Label label1 = new Label(0,1,"first"); 
      Label label0 = new Label(0,0,"HEADING"); 
      Label label3 = new Label(1,0,"Heading2"); 
      Label label4 = new Label(1,1,String.valueOf(a)); 

      try { 
       sheet.addCell(label); 
       sheet.addCell(label1); 
       sheet.addCell(label0); 
       sheet.addCell(label4); 
       sheet.addCell(label3); 
      } catch (RowsExceededException e) { 
       e.printStackTrace(); 
      } catch (WriteException e) { 
       e.printStackTrace(); 
      } 
      workbook.write(); 

      try { 
       workbook.close(); 
      } catch (WriteException e) { 

       e.printStackTrace(); 
      } 

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

} 

順便說一句，我使用的Java Excel的API。

Answer 1

看起來好像沒有找到jxl.WorkbookSettings。將Java Excel API.jar納入項目libs並清理並構建您的項目。

按照此步驟添加外部庫或JARS到您的項目：

右鍵單擊項目 - >轉到屬性 - >點擊「Java構建路徑」位於左副作用>轉到庫 - >你看 添加外部JARS按鈕點擊它並添加。

Answer 2

在Android Studio中，你可以做如下： -

1. 在你的應用項目
2. 複製jxl.jar創建一個文件夾 「LIB」，並粘貼在 「LIB」 文件夾
3. 右鍵單擊jxl.jar。選擇添加爲圖書館
4. 完成

立即清除並運行該項目。