Android光标错误 - 确保光标已正确初始化

我已经设置了一个光标，我想要返回具有电话号码的联系人的列表视图。因此，在每个单元格中，我都会有联系人姓名和电话号码。此代码主要是做这项工作：Android光标错误 - 确保光标已正确初始化

// this query only return contacts with phone number and is not duplicated 
     phones = getContentResolver().query(
       ContactsContract.Contacts.CONTENT_URI, 
       null, 
//    we only want contacts that have a name and a phone number. If they have a phone number, the value is 1 (if not, it is 0) 
       ContactsContract.Contacts.IN_VISIBLE_GROUP + " = '" + ("1") + "'" + " AND " + ContactsContract.Contacts.HAS_PHONE_NUMBER + "=1", 
       null, 
       ContactsContract.Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC");

然后当它涉及到提取信息，并把它在每个单元：

 while (phones.moveToNext()) { 

      String name = phones.getString(phones.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME)); 
      String phoneNumber = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));

我发现了一个错误，这是部分代码：

04-07 10:43:46.489 17742-17760/com.example.chris.contactlistcustomlistview E/CursorWindow﹕ Failed to read row 0, column -1 from a CursorWindow which has 134 rows, 34 columns. 
04-07 10:43:46.489 17742-17760/com.example.chris.contactlistcustomlistview W/dalvikvm﹕ threadid=11: thread exiting with uncaught exception (group=0x416168e0) 
04-07 10:43:46.489 17742-17760/com.example.chris.contactlistcustomlistview E/AndroidRuntime﹕ FATAL EXCEPTION: AsyncTask #1 
    java.lang.RuntimeException: An error occured while executing doInBackground() 
      at android.os.AsyncTask$3.done(AsyncTask.java:299) 
      at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:352) 
      at java.util.concurrent.FutureTask.setException(FutureTask.java:219) 
      at java.util.concurrent.FutureTask.run(FutureTask.java:239) 
      at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230) 
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) 
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573) 
      at java.lang.Thread.run(Thread.java:841) 
    Caused by: java.lang.IllegalStateException: Couldn't read row 0, col -1 from CursorWindow. Make sure the Cursor is initialized correctly before accessing data from it. 
      at android.database.CursorWindow.nativeGetString(Native Method)

因此，光标从Contacts.Contracts跳跃到ContactsContract.CommonDataKinds.Phone，它不喜欢它。但是，我还能如何获得用户的电话号码？据我所知，它不在ContactsContracts.Contacts。在进入CommonDataKinds之前，我应该重新初始化光标还是其他东西？我该怎么做？

来源

2016-04-07 CHarris

if (phones != null) { 
    phones.moveToFirst(); 
}

来源

2016-04-17 22:58:24 CHarris

您是否试过在phones.moveToNext（）之前调用phones.moveToFirst（）？它移动到第一行。这是因为您当前的查询返回位于第一个条目之前的Cursor对象。

您可以尝试写：

if (phones.moveToFirst()) { 

     while (phones.moveToNext()) { 
        // etc

来源

2016-04-07 10:33:43

感谢PlanetAstro，但是这并没有解决它。同样的错误。无论如何，我认为movetonext和movetofirst总是从表中的第一个位置开始。 – CHarris

Android光标错误 - 确保光标已正确初始化

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