Question

我从手机databese获取数据。但是光标总是得到null。我也有权限阅读联系人。有人能帮助我吗？

//for get number and name from contacts
 c = getContentResolver().query(uri, new String[]{ 
                                    ContactsContract.CommonDataKinds.Phone.NUMBER,  
                                    ContactsContract.CommonDataKinds.Phone.TYPE },
                                null, null, null);

我的所有代码都在这里：

  @Override
        protected void onActivityResult(int requestCode, int resultCode, Intent data) {
           if (data != null) {
                Uri uri = data.getData();

                if (uri != null) {
                    Cursor c = null;
                    try {
                        c = getContentResolver().query(uri, new String[]{ 
                                    ContactsContract.CommonDataKinds.Phone.NUMBER,  
                                    ContactsContract.CommonDataKinds.Phone.TYPE },
                                null, null, null);

                        if (c != null && c.moveToFirst()) {
                            String number = c.getString(0);
                            int type = c.getInt(1);
                            Toast.makeText(this, type + ": " + number, Toast.LENGTH_LONG).show(); 
                        }
                    } finally {
                        if (c != null) {
                            c.close();
                        }
                    }
                }

来自logcat的Exception：

12-16 12:59:33.962: E/AndroidRuntime(20650): Caused by:   java.lang.IllegalArgumentException: Invalid column data1
12-16 12:59:33.962: E/AndroidRuntime(20650): at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:167)

Answer 1

我使用以下代码获取phoneNumber，使用：

  Cursor contact = getContentResolver().query(
                    ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
  if (contact.getCount() > 0) {
  contact.moveToFirst();

    do
    {
                String contactId = contact.getString(contact
                    .getColumnIndex(ContactsContract.Contacts._ID));

        log.d("contactId is", contactId);

                     Cursor pCur = getContentResolver()
                            .query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
                                    null,
                                    ContactsContract.CommonDataKinds.Phone.CONTACT_ID
                                            + " = ?",
                                    new String[] { contactId }, null);
                if (pCur.getCount() > 0){
                    pCur.moveToFirst();
                    do {
                        String number = pCur
                                .getString(pCur
                                        .getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
                            log.d("number is",number);

                    } while (pCur.moveToNext());
    }
            }
    while(contact.moveToNext());
   }

联系人光标总是空的？

1 个答案: