Question

我有一个应用程序，显示最近的电话联系人。所以我使用下面的代码来获取最近的联系人，但是当我试图运行它时，我发现了以下错误。

java.lang.IllegalStateException：无法从中读取第0行，第1行 CursorWindow。确保之前正确初始化了Cursor 从中访问数据。

以下是我最近的联系人提取代码：

ContentResolver cr = getActivity().getContentResolver();

    String[] projection = new String[] {ContactsContract.Contacts._ID}; // you can add more fields you need here
    int oneDay = ( 1000 *3600 * 24);
    long last24h = (System.currentTimeMillis() - oneDay);

   Cursor cur=cr.query(CallLog.Calls.CONTENT_URI,null,null,null,null);
    String phone = null;
    String emailContact = null;
    String image_uri;
    Bitmap bitmap;


    if (cur.getCount() > 0)
    {
        while (cur.moveToNext())
        {
            String id = cur.getString(cur
                    .getColumnIndex(ContactsContract.Contacts._ID));
            String name = cur
                    .getString(cur
                            .getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));

            image_uri = cur
                    .getString(cur
                              .getColumnIndex(ContactsContract.CommonDataKinds.Phone.PHOTO_URI));
            if (Integer
                    .parseInt(cur.getString(cur
                            .getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0)
            {

                Cursor pCur = cr.query(
                        ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
                        null,
                        ContactsContract.CommonDataKinds.Phone.CONTACT_ID
                                + " = ?", new String[]{id}, null);
                while (pCur.moveToNext())
                {
                    phone = pCur
                            .getString(pCur
                                    .getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
                    // contactid=pCur.getString(pCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));

                   /* phonenumber.add(pCur
                            .getString(pCur
                                    .getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)));`*/

                }
                pCur.close();


                Cursor emailCur = cr.query
                        (
                                ContactsContract.CommonDataKinds.Email.CONTENT_URI,
                                null,
                                ContactsContract.CommonDataKinds.Email.CONTACT_ID
                                        + " = ?", new String[]{id}, null);

                while (emailCur.moveToNext())
                {
                    emailContact = emailCur
                            .getString(emailCur
                                    .getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));

                    if(TextUtils.isEmpty(emailContact)||emailContact.equalsIgnoreCase(null)||emailContact.equalsIgnoreCase(""))
                    {
                        emailContact="";

                    }

                    else
                    {

                    }
                  /*  emailType = emailCur
                            .getString(emailCur
                                    .getColumnIndex(ContactsContract.CommonDataKinds.Email.TYPE));*/
                }
                emailCur.close();
            }

            if (image_uri != null)
            {
                System.out.println(Uri.parse(image_uri));
                try
                {
                    bitmap = MediaStore.Images.Media
                            .getBitmap(getActivity().getContentResolver(),
                                    Uri.parse(image_uri));
                    System.out.println(bitmap);

                } catch (FileNotFoundException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }

            recent_list.add(new Contacts(name, phone, image_uri,emailContact));
            emailContact="";
            phone="";
        }
        cur.close();
    }
    else
    {
        noContact.setVisibility(View.VISIBLE);
        search_layout.setVisibility(View.GONE);
    }
}

Answer 1

您尝试访问光标中未在投影中指定的字段，这是不可能的。

投影需要包含您需要的所有字段。

但是，您无法从“呼叫记录”表中访问“联系人”字段。

就像我最近在这里回答了您的其他问题：How to fetch recent and favourite contacts in android?

最近的联系人获取最近的通话记录会出错

1 个答案: