Android onResume崩潰

Question

我做了一個應用程序，它使用runnable讀取特定類型的短信。 Everyhing正常工作。我收到了短信，從讀狀態移動閱讀，但它崩潰的onResume（），並給予下列錯誤：

Unable to resume activity {com.android.testthread/com.android.testthread.MainActivity}: android.database.StaleDataException: Attempted to access a cursor after it has been closed. 

如何解決這個問題？

public class MainActivity extends Activity { 
    boolean recieved = false; 
    private TextView text; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     text = (TextView) findViewById(R.id.textView1); 
     Runnable runnable = new Runnable() { 
      @Override 
      public void run() { 
       while (!recieved) { 
        doFakeWork(); 
        text.post(new Runnable() { 
         @Override 
         public void run() { 
          List<Sms> list = getAllSms(); 

          if (list.size() > 0) { 
           if (list.get(0).getAddress().equals("Engage") && list.get(0).getFolderName().equals("inbox") && list.get(0).getReadState().equals("0")) { 
            setReadMessage(list.get(0).getId()); 
            text.setText("Got it"); 
            Toast.makeText(MainActivity.this, list.get(0).getMsg(), Toast.LENGTH_SHORT).show(); 
            recieved = true; 
           } 
          } 
         } 
        }); 
       } 
      } 
     }; 
     new Thread(runnable).start(); 

    } 

    public void setReadMessage(String SmsMessageId){ 
     ContentValues values = new ContentValues(); 
     values.put("read",true); 
     getContentResolver().update(Uri.parse("content://sms/inbox"),values, 
       "_id="+SmsMessageId, null); 
    } 

    public List<Sms> getAllSms() { 
     List<Sms> lstSms = new ArrayList<Sms>(); 
     Sms objSms = new Sms(); 
     Uri message = Uri.parse("content://sms/"); 
     ContentResolver cr = this.getContentResolver(); 

     Cursor c = cr.query(message, null, null, null, null); 
     this.startManagingCursor(c); 
     int totalSMS = c.getCount(); 

     if (c.moveToFirst()) { 
      for (int i = 0; i < totalSMS; i++) { 

       objSms = new Sms(); 
       objSms.setId(c.getString(c.getColumnIndexOrThrow("_id"))); 
       objSms.setAddress(c.getString(c 
         .getColumnIndexOrThrow("address"))); 
       objSms.setMsg(c.getString(c.getColumnIndexOrThrow("body"))); 
       objSms.setReadState(c.getString(c.getColumnIndex("read"))); 
       objSms.setTime(c.getString(c.getColumnIndexOrThrow("date"))); 
       if (c.getString(c.getColumnIndexOrThrow("type")).contains("1")) { 
        objSms.setFolderName("inbox"); 
       } else { 
        objSms.setFolderName("sent"); 
       } 

       lstSms.add(objSms); 
       c.moveToNext(); 
      } 
     } 
     c.close(); 

     return lstSms; 
    } 

    private void doFakeWork() { 
     try { 
      Thread.sleep(1000); 
     } catch (InterruptedException e) { 
      e.printStackTrace(); 
     } 
    } 
} 

Answer 1

您正試圖訪問已關閉的遊標。 1）嘗試在onDestroy和onPause中關閉該遊標，這是正確的方法。 2）並嘗試在onResume中打開它。