过滤联系人前缀号码

Question

我有功能加载android中的所有联系号码，现在我想过滤所有联系号码，前缀为“0878”，“0877”，“0817”，因此将加载带有该前缀的联系号码，这里是我当前的代码：

private void loadContact(){
    ContentResolver cr = applicationContext.getContentResolver();
    String [] PROJECTION = ContactsQuery.PROJECTION;

    Cursor cursor = cr.query(
            ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
            PROJECTION,
            null,
            null,
            null
    );

    while (cursor.moveToNext()) {
        //String name = cursor.getString(ContactsQuery.DISPLAY_NAME);
        String lookUpKey = cursor.getString(ContactsQuery.LOOKUP_KEY);
        loadContactDetail(lookUpKey);
    }
    cursor.close();
}

private void loadContactDetail(String lookUpKey){
    ContentResolver cr = applicationContext.getContentResolver();

    String [] COLS = {ContactsContract.CommonDataKinds.Phone.NUMBER};

    Cursor cursor = cr.query(
            ContactsContract.CommonDataKinds.Phone.CONTENT_URI, COLS,
            ContactsContract.Data.LOOKUP_KEY + " = ?",
            new String[]{lookUpKey},
            null
    );

    while (cursor.moveToNext()) {
        String phone = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
        String formatted = Util.formatMSISDN(phone);
        if(formatted != null)
            contactsSet.add(formatted);
    }
    cursor.close();
}

Answer 1

试试这个。

    while (cursor.moveToNext()) {
        String phone = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
        String formatted = Util.formatMSISDN(phone);
        if(formatted != null){
            if(formatted.startsWith("0878") || formatted.startsWith("0877") || formatted.startsWith("0817"))
               contactsSet.add(formatted);
        }
    }
    cursor.close();

Answer 2

查看sourceString.contains（CharSequence）方法。