獲取與getColumnIndex（）檢索聯繫號碼-1 Android

我試圖檢索聯繫人的號碼。我可以毫無問題地訪問聯繫人名稱，但是當我嘗試訪問聯繫人號碼時，我得到一個異常，因爲getColumnIndex返回-1，這意味着它無法找到我請求的列。但我不明白爲什麼它從Android文檔中找不到列，我發現該列確實存在。獲取與getColumnIndex（）檢索聯繫號碼-1 Android

這裏是我的代碼：

public ArrayList<String> getContactById(String contactId) 
    { 
     Log.d("XYZ", "Contact id -> " + contactId); 
     ArrayList<String> contact = new ArrayList<String>(); 
     ContentResolver cr = context.getContentResolver(); 
final String[] projection = new String[] { 
       Contacts.DISPLAY_NAME, // the name of the contact 
       Contacts.PHOTO_ID  // the id of the column in the data table for the image 
      }; 

     final Cursor curContact = cr.query(
       Contacts.CONTENT_URI, 
       projection, 
       Contacts._ID + "=?", // filter entries on the basis of the contact id 
       new String[]{String.valueOf(contactId)}, // the parameter to which the contact id column is compared to 
       null); 

     if(curContact.moveToFirst()) { 
      final String name = curContact.getString(curContact.getColumnIndex(Contacts.DISPLAY_NAME)); 
      final String photoId = curContact.getString(curContact.getColumnIndex(Contacts.PHOTO_ID)); 
       Log.d("XYZ", "Name -> " + name); 
       Log.d("XYZ", "Photo id -> " + photoId); 
      } 



     // Get the phone numbers 

     final String[] phoneNumbersProjection = new String[] { 
       Phone.NUMBER, 
       Phone.TYPE, 
     }; 

     final Cursor curPhone = cr.query(
       Phone.CONTENT_URI, 
       projection, 
       Data.CONTACT_ID + " = " + contactId, null, 
       //new String[]{String.valueOf(contactId)}, 
       null); 

     if(curPhone.moveToFirst()) { 
      final int contactNumberColumnIndex = curPhone.getColumnIndex(Phone.NUMBER); 
      final int contactTypeColumnIndex = curPhone.getColumnIndex(Phone.TYPE); 

      Log.d("XYZ", "contactNumberColumnIndex -> " + contactNumberColumnIndex); 
      Log.d("XYZ", "contactTypeColumnIndex -> " + contactTypeColumnIndex); 

      while(!curPhone.isAfterLast()) { 
       final String number = curPhone.getString(contactNumberColumnIndex); 
       final int type = curPhone.getInt(contactTypeColumnIndex); 
       final int typeLabelResource = Phone.getTypeLabelResource(type); 
       Log.d("XYZ", "Contact number -> " + number); 
       //Log.d("XYZ", "Number Type -> " + typeLabelResource); 
       //doSomethingWithAContactPhoneNumber(number, typeLabelResource); 
       curPhone.moveToNext(); 
      } 

     } 
     curPhone.close(); 
     curContact.close(); 
     return contact; 
    }

有了：

Log.d("XYZ", "contactNumberColumnIndex -> " + contactNumberColumnIndex); 
Log.d("XYZ", "contactTypeColumnIndex -> " + contactTypeColumnIndex);

我收到：

contactNumberColumnIndex -> -1 
contactTypeColumnIndex -> -1

誰能弄清楚什麼是錯我的代碼？

謝謝！

來源

2014-01-21 dazito

剛剛添加，我正在學習本教程 - > http://www.app-solut.com/blog/2011/03/working-with-the-contactscontract-to-query-contacts- in-android/ – dazito

您使用了錯誤的投影：

final String[] phoneNumbersProjection = new String[] { 
     Phone.NUMBER, 
     Phone.TYPE, 
}; 

final Cursor curPhone = cr.query(
     Phone.CONTENT_URI, 
     projection,

您應該使用phoneNumbersProjection而不是你用於其他查詢早些時候projection。

通常，getColumnIndex()會嘗試從Cursor中的列中找到該列，因此如果未找到列，請首先檢查是否在查詢中包含列。

來源

2014-01-21 10:38:21 laalto

謝謝！這些錯誤有時會導致我的耐心喪失:)我應該給你買一杯啤酒！ – dazito

final Cursor curPhone = cr.query(
       Phone.CONTENT_URI, 
       phoneNumbersProjection, 
       Data.CONTACT_ID + " = " + contactId, null, 
       //new String[]{String.valueOf(contactId)}, 
       null);

來源

2014-01-21 10:40:57

獲取與getColumnIndex（）檢索聯繫號碼-1 Android

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