I need to make all numbers in a string become links.
The expected action when any of these links is clicked is to append the clicked number to an existing string.
I managed to linkify the numbers by using the following code:
Pattern myMatcher = Pattern.compile("[0-9]*");
Linkify.addLinks(myString, myMatcher, null);
How can I access and retrieve the clicked number in this case?
I tried looking in other questions related to Linkify but seems all are describing ways to have an action that opens an activity or open the default app for that link type (email address/web URL/etc.)
Thanks in advance for you help :)
You can Customize Linkify to append any predefiened string(scheme) into that.
Take a look at the following post Android Developer Blogspot (Search for "Custom Linkify")
For clarity I am describing a portion of that post here:
Linkify will automatically append whatever is matched to a scheme that
is supplied to it, so for the sake of argument let's assume we have a
ContentProvider that matches the following content URI:
content://com.google.android.wikinotes.db.wikinotes/wikinotes/WikiWord
The WikiWord part will be appended by Linkify when it finds a match,
so we just need the part before that as our scheme.
Now that we have these two things, we use Linkify to connect them up:
Pattern wikiWordMatcher = Pattern.compile("\\b[A-Z]+[a-z0-9]+[A-Z][A-Za-z0-9]+\\b");
String wikiViewURL = "content://com.google.android.wikinotes.db.wikinotes/wikinotes/";
Linkify.addLinks(noteView, wikiWordMatcher, wikiViewURL);
Linkify can be used multiple times on the same view to add more links,
so using this after the Default Linkify call means that the existing
active links will be maintained and the new WikiWords will be added.
You could define more Linkify actions and keep applying them to the
same TextView if you wanted to.
Now, if we have a WikiWord in the TextView, let's say MyToDoList,
Linkify will turn it into an active link with the content URI:
content://com.google.android.wikinotes.db.wikinotes/wikinotes/MyToDoList
and if you click on it, Android will fire the default intent for that
content URI.
For this to all work, you will need a ContentProvider that understands
that Content URI, and you will need a default activity capable of
doing something with the resulting data. I plan to cover these in
future blog entries (and soon). In fact, the whole Wiki Note Pad
application is currently undergoing some clean up and review, and will
then hopefully be released as a sample application.
Related
I am working on Android SoftKeyboard. I've created layout for keyboard but dont't know how to include suggestions which appears if we type some word in EditText.
For example if i write "Kn" then "Known" and "Known" are shown in Suggestions.
So my questions are -
1) How to include suggestions in Android Softkeyboard?
2) Is there any way to include our own list of suggestions?
Thanx a lot in advance.
I've already checked this and this but not able to find any proper answer. Any help would be appreciated.
EDIT
I want to include suggestions directly above Keyboard as shown in picture below.
You can use the static method UserDictionary.Words.addWord(....): Link
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
// On JellyBean & above, you can provide a shortcut and an explicit Locale
UserDictionary.Words.addWord(this, "MadeUpWord", 10, "Mad", Locale.getDefault());
} else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.CUPCAKE) {
UserDictionary.Words.addWord(this, "MadeUpWord", 10, UserDictionary.Words.LOCALE_TYPE_CURRENT);
}
You will need to add this permission to your manifest:
<uses-permission android:name="android.permission.WRITE_USER_DICTIONARY"/>
Added words will appear in Settings > Language & input > Personal dictionary.
If you are implementing your own soft keyboard, I suggest you go through Creating an Input Method. The suggestions are usually shown in the Candidates View. By default, InputMethodService#onCreateCandidatesView() returns null. You should override this method to return your implementation of the suggestions bar.
Here's a sample project that implements the Candidates view: SoftKeyboard.
More info:
Word and phrase suggestions go in the candidates view. Info about how to create & populate it are in the sample project mentioned above.
As far as I know, the selection of what words/phrases to suggest is developer's responsibility. Android does not provide those for you. You will probably need a set of dictionaries - one for each language/locale you plan on supporting. You may also want to maintain a dictionary of user-specified words.
Android's default keyboard uses these: Link
If you download one of these, unpack it and open with a text editor:
dictionary=main:en,locale=en,description=English,date=1402373178,version=47
word=the,f=222,flags=,originalFreq=222
word=to,f=215,flags=,originalFreq=208
word=of,f=214,flags=,originalFreq=214
word=and,f=212,flags=,originalFreq=212
word=in,f=210,flags=,originalFreq=210
.... 165,635 more lines
As apparent, the frequency plays a pivotal role in determining the suitability of a word as a suggestion. You probably don't want to suggest tachometer when the user types ta. You probably do want to suggest take - frequency helps you there.
Autocorrection:
word=id,f=99,flags=,originalFreq=99
shortcut=I'd,f=whitelist
The flags indicate appropriateness:
word=goddamn,f=0,flags=offensive,originalFreq=62
Even if you decide to use these dictionaries, the code to parse them and obtain meaningful suggestions will have to come from you.
Two articles (both by Peter Kankowski) that talk about predictive text input & spelling correction:
Using DAWG for predictive text input
Using Ternary DAGs for Spelling Correction
CandidatesView:
The first thing you should know about the CandidatesView: it is optional. In fact, LatinIME (android's default soft keyboard) does not use it. Instead LatinIME has its own implementation - SuggestionStripView - which is similar. The default behavior of InputMethodService#onCreateCandidatesView() is to return null. If you choose to provide your own implementation, don't override this method.
You need to decide what your CandidatesView should look like. One possible implementation can be a HorizontalScrollView. After you evaluate your suggestions (for example, user start writing "as", and your suggestion-logic gives you a List<String> containing "has", "was", "assist", "ask", "asked", "asking", "assume"), create & add TextViews holding these strings to the HorizontalScrollView(LinearLayout). This way, user can scroll horizontally and choose the intended word by clicking on it.
It is up to you to decide whether to use the API or handle the CandidatesView yourself. If you want to use the API, override InputMetodService#onCreateCandidatesView(), inflate your custom layout, then return it. Hold a reference to it, so you can update it when required. To control CandidatesView's visibility, use the method setCandidatesViewShown(boolean).
If you are creating a custom keyboard, I suggest you go through Creating Input Method, there is a sample code that you can go over. CandidateView is probably what you are looking for. It is explained in the link above.
If you want to provide inline spell checker, you would want to check out Spellchecker framework
Hope this helps.
We can use a TextViewfor adding hyperlinks to it by various methods, like using the attribute autoLink, or by using setMovementMethod().
Can we do the same using and EditText widget? I am trying to create a notepad, in which if any such text entered, like url, email, number or something similar, we should get a hyperlink to click on it and open the browser.
Please help.
Thanks All.
As of Android API level 8 there is a WEB_URL pattern. Quoting the source, it "match[es] most part of RFC 3987". If you target a lower API level you could simply copy the pattern from the source and include it in your application. I assume you know how to use patterns and matchers, so I'm not going into more details here.
Also the class URLUtil provides some useful methods, e.g:
isHttpUrl()
isValidUrl()
The descriptions of the methods are not very elaborate, therefore you are probably best of looking at the source and figuring out which one fits your purpose best.
As for when to trigger the validation check, there are multiple possibilities: you could use the EditText callback functions
onFocusChanged(), or
onTextChanged()
or use a TextWatcher, which I think would be better.
I hope this helps, best regards,
I am doing direct queries to wikipedia's website via an android app.
However, sometimes when I get "REDIRECT" queries, and my redirect suggestion has a # sign in it, I don't really know how to handle it. I know I can just throw everything out past the # sign, but that means I'm looking up something that is relatively unimportant.
Here is an example link;
http://en.wikipedia.org/w/api.php?action=query&prop=extracts&titles=Poof_(The_Fairly_OddParents)&format=json
I can just redirect to List_of_The_Fairly_OddParents_characters, but I want to know if there is anything useful I can do with the "#Poof" because I'm sure that the information is there for a reason.
I could not find anything on MediaWiki APIs.
Please help!
Thanks
Most of the time the part after the hash is a section title (though it is simply appended to the new URL, so it can be, and occasionally is, used to point to other kinds of anchors), so you can locate the section (with the mobileview action for example) and with the section index you can query the HTML for that section. (extracts does not support sections, so you you must use something else and enforce length limits manually.)
The hash points to a named anchor or ID in the target document. So if you're parsing the page content, then ideally you'd find the anchor tag or ID and return the content that follows that element, rather than starting at the beginning of the content.
Im making a simple app for some friends to use on there android phone that shows my website with images. Im using a webview to show the website inside the app. I want the users, to be able to save the actual image. Either by Hold down on the image or actually clicking a button. Been looking around on googles docs ands cant seem to find anything for this.
I haven't actually played around with this yet, but from the docs it appears you have at least two (non-deprecated) options:
getHitTestResult()
requestImageRef(Message msg)
According to the documentation you can use the first option to test for IMAGE_TYPE as result, and a url to the image is provided as well:
If a HTML::img tag is found, the HitTestResult type is set to
IMAGE_TYPE and the url is set in the "extra" field.
The second option will give you a similar result:
Request the url of the image last touched by the user. msg will be
sent to its target with a String representing the url as its object.
Not sure if these options are compatible with a 'long click' too though.
Alternatively, how did you have in mind to link clicking a button to a specific image? Depending on your solution for this, you may also be able to simply capture all loaded image resources using onLoadResource(WebView view, String url), build a list of image references and download the one that button click refers too.
I am building a basic twitter client application. I am trying to figure out how to make the TextView that holds the Tweets to autoLink the #mentions so that they link to the twitter page of whoever it is the same as it does on the twitter website. My guess is that this is going to involve making a custom TextView and adding this into the part that already handles the auto linking of websites,emails,maps and such. Is this right approach to achieving something like this? or should I be using a stock TextView and handling this by parsing the tweet before it gets put into the view? If I should be going the custom view route could anyone point me in the right direction for how to get this capability added to the autolink? And if I should be using the stock TextView and handling it in java before the tweet gets put into the view how do I get it "linkify" the text my only guess is using something like .fromHTML() but I'm not even sure if this supports the tag.
Have a look at the Linkify class, including the interfaces Linkify.MatchFilter and
Linkify.TransformFilter. You should be able to set up a MatchFilter that works on # links, and a TransformFilter that translates them into the appropriate URL format.
Here's a page that walks you through the usage of these classes; it even uses Twitter as an example for using TransformFilter.