在android中检索带有号码的联系人列表

Question

您好，我想从 android 中的联系人列表中检索姓名和号码，我使用以下代码，它会给我姓名，但不会给我号码，它会为号码提供空值

注意：我正在使用 android 模拟器

  public void demo(){
    String phoneNumber;
    String [] item = new String[]{ People._ID,

            People.NAME,
            People.NUMBER};

    Cursor cur = getContentResolver().query(People.CONTENT_URI ,item , null, null, null);
    int phoneNumberIndex = cur.getColumnIndexOrThrow(People.NUMBER);
    if (cur != null) {
        Log.v("cur not null", "Cursor Not null");

        if (cur.moveToNext()) {
            Log.v("moveToNext", "Moved to first");
            Log.v("moveToNext", "Cursor Moved to first and checking");
            phoneNumber = cur.getString(phoneNumberIndex);
            System.out.println("****** from_number "+phoneNumber +" *****************");
        }
    }
}

Answer 1

它给出 null 因为你试图只检索一个数字..这应该有效..

if (cur.moveToNext()) {
            Log.v("moveToNext", "Moved to first");
            Log.v("moveToNext", "Cursor Moved to first and checking");
while(cur.moveToNext())
{
            phoneNumber = cur.getString(phoneNumberIndex);
            System.out.println("****** from_number "+phoneNumber +" *****************");
}
        }