i am new to android development,so dint get me wrong. I am developing an application in which a text is generated.which is normally a word. The word is checked in a database for is corresponding value pair. Here the word is the key and its corresponding value is the value .
Since the text is auto generated it sometimes goes wrong(mis spelled). How do i perform a check of auto generated word to match with the mostly matched letters in the database of key word.
example: auto-generated word(key) - value
americ:
america : a country
Here the auto generatd word is americ(key) is not matched since it only contains america in its pair set.it need to be corrected as america.
You are probably using SQLite. Your best bet is soundex, which is desribed here.
Soundex has many shortcomings, but it might get you started. If you want a real measure, then go with Levenshtein distance, which is not built into the database (as far as I know).
Related
I'm new in Firebase realtime database, and I have to save some special characters in the database like the following:
https://myProject.firebaseio.com/myProject/en/$fanny/weight
Note: the child could contain any special character not just only $
How could I handle such like this issue please?
As I see there are some guys are replacing the characters, but in my case I should not change the values, because I have to display it to the users as is because it has a meaningful to the user.
The only solution is to replace the invalid characters in the keys.
If you need to display the original value to the user, also store it as a value.
I have successfully added a word to Android's predefined user dictionary, but i want to create a custom dictionary which can only be accessed by my application.
For example: When i type "lol", the suggestions show me "laugh out loud" but when I want another meaning of "lol" then I can manually add another meaning of "lol" (eg, "xxxxxx" - so the next time the user writes "lol" in an EditText, the suggestions will show him "xxxxxx").
No other application should have access my dictionary data.
I have worked with spell checker class but it gives me only correct word and I can't my own word meanings.
Please give me some suggestions or links.
There is an Androids inbuilt class UserDictionary so that you can add your spells programmatically into that, Here is a link you can go through with , and which may relates to your problem .(In this solution nidhi has manged programmatically to retrieve data back)
Add word to user dictionary and retrieve them back from dictionary
In addition you can go through following links to :
http://developer.android.com/reference/android/provider/UserDictionary.html
http://developer.android.com/reference/android/provider/UserDictionary.Words.html
Moreover if you want a custom personal dictionary then manually you have to store words and retrieve them back .
Hope that helps !!!
just for curious, i got a question!
My app is almost ready.. I have implemented bilingual (English/Tamil) when users select thr preferred language in Settings then whole app gets converted into that language (i used custom Locale). Everything works fine.
My question is, Can we do the same to SQlite database? which fetch data automatically based on locale from table
"country-en"or"country-ta" ? is there any way? i heard that thr is a method SQLiteOpenHelper.onConfigure(setLocale()); to set locale in sqlitedatabase. i want to know how it works!
The method you describe above is not related to language localization for the client. It's related to locale options on the database (for example how to treat string comparisons with accented characters).
Anyway, if you think of it... what does localizing a database mean? You can either localize the structure or the data. Localizing the structure (table names...) doesn't make sens because the user is not aware of it. Localizing the data doesn't make sense either, because that means that if the users changes language settings, next time he uses your app he won't see his data!
If the DB only contains static data and you need to provide a different DB for different languages, you could use localization to lookup for the database filename.
Of course, yes, you can.
When you do your queries, just append "en" or "ta".
Something like "SELECT FROM Country_" + yourLocale + "..." - if you want to use two different tables.
OR you could use one single table with an integer field "Language" and you pass an int (0 = english, 1 = tamil - only for alphabetical order, which is easier to remind)...
Something like "... WHERE ... AND Language = 0"
We know that there are numbers with different length. In Europe we mostly have 9 digits numbers plus country code.
In North America we often find 10 digits numbers.
I am trying to get my head around an idea how to get a country code from a number that may be of different length.
Any ideas? Maybe you know some working libs that can do it?
The key facts:
The country code is always at the start of the number, so it is easy to find no matter the length of the number.
There is no overlap, as #Luis points out.
A (looks pretty) complete list of country codes is give here. If you sort them by length (shortest first) and run through the list comparing the first n digits with the list entries you will get the answer.
However, if you look at the list you wall see that there are various groups of codes. A more intelligent approach would note that:
All numbers beginning with 1 are US, Canada or other US related places in which case the next three digits tell you which.
7 is Khazakstan
Apart from 20, all country codes beginning with 2 are three digits.
and so on ...
Country codes are parsed left-to-right with deterministic endpoints similar to the idea of Huffman coding. ie, if you see a 1 first, stop, it's the US/Canada/related territories. If you see most other numbers besides 7 (Russia/Kazakhstan), keep going. Some of those numbers may terminate on the second value.
The list of country codes is here: http://www.howtocallabroad.com/codes.html
It should be trivial for you to take this and write your own string parser of a phone number in order to determine which country code is present.
(don't forget that if these are numbers from within a particular country, you also have to take that country's exit code into account, which is also on the page I linked)
Edit: Oh, I guess luis covered it. But Jakob is incorrect in his comment about Barbados. Barbados is the same country code as the US; the 246 is its local "area code" within the US/Canada's country code.
I assume that you are talking about phone number country codes. Country codes are defined by the ITU ( https://en.wikipedia.org/wiki/List_of_country_calling_codes ). The country codes can be 1, 2 or 3 digits. Your only alternative is to have a list of all country codes and parse it from there. Note that there is no overlap; for instance, +44 belongs to the UK, and no country starts with just 4.
UPDATE: The North American Area has 4 digit prefixes, not 1, composed of +1 and a NPA of 3 digit (http://en.wikipedia.org/wiki/North_American_Numbering_Plan). The same rule applies though, in that +1-NPA cannot be repeated. Barbados seems to be +1246, but no other country or region can start with +1246. You can get the list of all NPA from http://en.wikipedia.org/wiki/List_of_North_American_Numbering_Plan_area_codes
I am writing a dictionary-type app. I have a list of hash-mapped terms and definitions. The basic premise is that there is a list of words that you tap on to see the definitions.
I have this functionality up and running - I am now trying to put dynamic links between the definitions.
Example: say the user taps on an item in the list, "dog". The definition might pop up, saying "A small furry [animal], commonly kept as a pet. See also [cat].". The intention is that the user can click on the word [animal] or [cat] and go to the appropriate definition. I've already gone to the trouble of making sure that any links in definitions are bounded by square brackets, so it's just a case of scanning the pop-up string for text [surrounded by brackets] and providing a link to that definition.
Note that definitions can contain multiple links, whilst some don't contain any links.
I have access to the string before it is displayed, so I guess the best way to do this is to do the scanning and ready the links before the dialog box is displayed.
The question is, how would I go about scanning for text surrounded by square brackets, and returning the text contained within those brackets?
Ideally the actual dialog box that is displayed would be devoid of the square brackets, and I need to also figure out a way of putting hyperlinks into a dialog box's text, but I'll cross that bridge when I come to it.
I'm new to Java - I've come from MATLAB and am just about staying afloat, but this is a less common task than I've had to deal with so far!
You could probably do this with a regular expression; something like this:
([^[]*)(\[[^]]+\])
which describes two "match groups"; the first of which means any string of zero or more characters that aren't "[" and the second of which means any string starting with "[", containing one or more characters that aren't "]", and ending with "]".
Then you could scan through your input for matches to this pattern. The first match group is passed through unchanged, and the second match group gets converted to a link. When the pattern stops matching your input, take whatever's left over and transmit that unchanged as well.
You'll have to experiment a little; regular expressions typically take some debugging. If your link text can only contain alphanumerics and spaces, your pattern would look more like this:
([^[]*)(\[[\s\w]+\])
Also, you may find that regular expression matching under Android is too slow to be practical, in which case you'll have to use wasyl's suggestion.
Quite simple, I think... As the text is in brackets, you need to scan every letter. So the basic recipe would be :
in a while loop scan every character (let's say, while i < len(text))
If scanned character is [:
i++;
Add letter at index i to some temporary variable
while (character # i) != ']' append it to the temporary variable
store this temporary variable in a list of results.
Some tips:
If you use solution above, use StringBuilder to append text (as regular string is immutable)
You might also want (and it's better, I think) to store starting and ending positions of all square brackets first, and then use string.substring() on each pair to get the text inside. This way you'd first iterate definition to find brackets (maybe catch unmatched ones, for early error handling), then iterate pairs of indices...
As for links, maybe this will be of use: How can I get clickable hyperlinks in AlertDialog from a string resource?