Altering line wrap behavior - android

I can use Spannable in TextViews to create spans with different looks, underlines, strikethroughs and such. How can I do the same to alter line wrapping behavior? In particular, I don't want an email address to wrap in the middle, I want it to act like one word.
I tried WrapTogetherSpan, but I couldn't get it to work. It looks like it is only used by DynamicLayout, and I could not force the TextView to use DynamicLayout.
<TextView
android:id="#+id/merchant_email_field"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textSize="#dimen/account_setting_email"
android:gravity="center"
android:bufferType="spannable"
android:maxLines="2"
android:ellipsize="end"
/>
How I'm setting the spannable:
WrapTogetherSpan TOGETHER_SPAN = new WrapTogetherSpan() {};
String collectedString = getString(R.string.email_sentence, userEmail);
int emailOffset = collectedString.indexOf(userEmail);
Spannable emailSpannable = Spannable.Factory.getInstance()
.newSpannable(collectedString);
emailSpannable.setSpan(TOGETHER_SPAN, emailOffset,
emailOffset + userEmail.length(),
Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
textView.setText(emailSpannable)

Don't know if you have found an answer to it but you can use unicode to help you out.
there is a non-break space character, so you will need to replace all the spaces you want to be unbreakable with this character (\u00A0)
for an example
String text = "Hello World";
text.replace(' ', '\u00A0');
textView.setText(text);
by the way I've looked for a span solution and couldn't find one, WrapTogetherSpan is just an interface so it wouldn't work...
but with this method I'm sure you could make a custom unbreakable span if you want.

If you are implementing a more low-level solution (ie, drawing your own text and handling line-wrapping yourself), then see BreakIterator. The BreakIterator.getLineInstance() factory method treats email addresses as a single unit.
String text = "My email is me#example.com.";
BreakIterator boundary = BreakIterator.getLineInstance();
boundary.setText(text);
int start = boundary.first();
for (int end = boundary.next(); end != BreakIterator.DONE; end = boundary.next()) {
System.out.println(start + " " + text.substring(start, end));
start = end;
}
The output shows the boundary start indexes where line breaks would be acceptable.
0 My
3 email
9 is
12 me#example.com.
See also
How does BreakIterator work in Android?
How is StaticLayout used in Android?

Have you tried adding android:singleLine="true" to your XML?

Related

How do I set phone numbers to be LTR in a RTL TextView with RTL characters

As you can see here, the phone number here is starting from the right to the left.
However, I want it to display it like this (Image here is edited):
This is the TextView displaying this message:
<TextView
android:text="#string/smsSentTo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/smsSentTo"
android:textColor="#color/mdtp_white"
android:textSize="18sp"
android:layout_above="#+id/chooseUsernameAndPickProfilePicture"
android:layout_centerHorizontal="true"
android:layout_marginBottom="24dp"/>
#string/smsSentTo (Arabic locale): (looks like StackOverflow is displaying the {0} wrong, ignore that.)
<string name="smsSentTo">تم إرسال رسالة SMS إلى {0}</string>
#string/smsSentTo (English locale):
<string name="smsSentTo">An SMS has been sent to {0}</string>
As you can see, I'm formatting the text using MessageFormat:
String smsSentTo = MessageFormat.format(smsSentToTV.getText().toString(), phone);
smsSentToTV.setText(smsSentTo);
How can I get it to display these properly?
There is a solution with a downside
String html = "<p>تم إرسال رسالة SMS إلي</p>" + "+961 01 234 567";
textView.setText(Html.fromHtml(html));
The downside is that the HTML p tag prints a line afterwards separating the number into the next line. I tried to remove it with some HTML attributes or using tags other than p tag, but that didn't work
Hope this satisfies your need, or can give you even a clue.

Override TextView ellipsize char('...') with ("... Read more")

I want to replace the char ('...') with a string ("...Read more").
Any easy way to do that by extending TextView and overriding a property?
I am expanding the TextView on click by increasing lines from 2 to 500 and vice versa. The TextView is in a ScrollView.
This code is XML File.
<com.google.android.material.textview.MaterialTextView
android:id="#+id/textDescriptions"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="What is Android ? \nBefore learning all topics of android, it is required to know what is android.Android is a software package and linux based operating system for mobile devices such as tablet computers and smartphones." />
This code is Java file.
String readMore = "... Read more";
String shortDescription = textDescriptions.getText().toString().substring(0, 100);
String text = "<font color=#aaaaaa>"+shortDescription+"</font> <font color=#ff669900>"+readMore+"</font>";
textDescriptions.setText(Html.fromHtml(text));

Android TextView in ScrollView - Different color for each new line

I am creating sort of terminal-like view, that would display received and transmitted messages over Bluetooth,e.g. received messages in blue, transmitted in red.
So far, i managed to put textView inside scrollView and by using .append() methdod add lines to scroll view.
Layout looks like this:
<ScrollView
android:id="#+id/scrollingView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/disconnectButton"
android:layout_alignParentStart="true">
<TextView
android:text="Received and sent txt!!!\n"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/scrollTextView"
android:minLines="11"
android:maxLines="11"/>
</ScrollView>
And code for adding text to scrollView:
scrollView = (ScrollView) findViewById(R.id.scrollingView);
scrollTextView = (TextView) findViewById(R.id.scrollTextView);
scrollTextView.setGravity(Gravity.BOTTOM); scrollTextView.setTextColor(getResources().getColor(R.color.receivedBTColor));
scrollTextView.append("$"+dataInPrint+"\n");
scrollView.fullScroll(View.FOCUS_DOWN);
The problem is that each of the lines should be able to be in different colors. setTextColor() method sets color for whole textView, which is totaly not what i want since i need to temporarily save the lines which go upwards until scrollView overflows. I looked at the example of using Spannable class, but it is quite messy.
Could anyone suggest a way to make a scrollable colorful text? Something like this?
Example from Bluetooth terminal app
Thanks a lot!
You can do a little tricky editing utilizing HTML and Android's Html.fromHtml()...
String dataInPrint = "" //Whatever the output message is.
String redB = "<font color="red">";
String blueB = "<font color="blue">";
String colorEnd = "</font>";
if(//message is send){
yourtextview.append(Html.fromHtml(redB + dataInPrint + colorEnd));
}
else{//message is recieve
yourtextview.append(Html.fromHtml(blueB + dataInPrint + colorEnd));
}

Setting a spannable string not working on a simple Textview

I cannot for the life of me understand why this simple code to set a spannable string is not working on this textview. The method below adds a "Today" marker, which should be in green, before the text displaying the date if the date is the current day.
private void setTimeTextView(String timeString) {
Calendar c = Calendar.getInstance();
String todaysDateString = ApiContentFormattingUtil.getFullDateFormat(c.getTime());
if (timeString.equals(todaysDateString)){
String todayText = getResources().getString(R.string.today_marker);
Spannable timeSpannable = new SpannableString(todayText + timeString);
timeSpannable.setSpan(new ForegroundColorSpan(ContextCompat.getColor(getContext(), R.color.greenish_teal)), 0,
todayText.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
mDateTime.setText(timeSpannable);
} else {
mDateTime.setText(timeString);
}
}
However, the color won't change.
Here is the XML for this view
<TextView
android:id="#+id/newsfeed_date_time"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="23dp"
android:textSize="12sp"
android:textColor="#color/white_three"
android:letterSpacing="0.06"
app:fontPath="#string/opensans_bold_path"
tools:text="Monday, January 1st"
android:textAllCaps="true"
tools:ignore="MissingPrefix"
tools:targetApi="lollipop"/>
On versions prior to Oreo, the android:textAllCaps="true" attribute setting will cause the formatting spans to be stripped from your text. You'll need to remove that setting (or set it to false), and handle the conversion to upper case yourself, before creating your SpannableString from it. For example:
String todayText = getResources().getString(R.string.today_marker);
String text = todayText + timeString;
Spannable timeSpannable = new SpannableString(text.toUpperCase());
This is due to a known bug in the platform AllCapsTransformationMethod class, which on versions Nougat 7.1 and below handles the text as a flat String, basically stripping any formatting spans you may have set.
Unfortunately, the support/androidx libraries also use the platform AllCapsTransformationMethod class, so this will happen for their textAllCaps attributes, as well; i.e., app:textAllCaps is broken pre-Oreo, too.
As indicated, this was corrected in Oreo, so this manual fix isn't strictly necessary on those newer versions. However, if you are still supporting pre-Oreo versions, it might be easier to just leave it off and handle the capitalization manually everywhere, rather than having to account for two different setups in your resources and code.

Textview link click in fragment - nothing happen [duplicate]

I have the following TextView defined:
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content" android:text="#string/txtCredits"
android:autoLink="web" android:id="#+id/infoTxtCredits"
android:layout_centerInParent="true"
android:linksClickable="true"/>
where #string/txtCredits is a string resource that contains Link text.
Android is highlighting the links in the TextView, but they do not respond to clicks. What am I doing wrong? Do I have to set an onClickListener for the TextView in my activity for something as simple as this?
It looks like it has to do with the way I define my string resource.
This does not work:
<string name="txtCredits">Google</string>
But this does:
<string name="txtCredits">www.google.com</string>
Which is a bummer because I would much rather show a text link than show the full URL.
Buried in the API demos, I found the solution to my problem:
File Link.java:
// text2 has links specified by putting <a> tags in the string
// resource. By default these links will appear but not
// respond to user input. To make them active, you need to
// call setMovementMethod() on the TextView object.
TextView t2 = (TextView) findViewById(R.id.text2);
t2.setMovementMethod(LinkMovementMethod.getInstance());
I removed most of the attributes on my TextView to match what was in the demo.
<TextView
android:id="#+id/text2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/txtCredits"/>
That solved it. It is pretty difficult to uncover and fix.
Important: Don't forget to remove autoLink="web" if you are calling setMovementMethod().
I'm using only android:autoLink="web" and it works fine. A click on the link opens the browser and shows the correct page.
One thing I could guess is that some other view is above the link. Something that is transparent fills the whole parent but don't displays anything above the link. In this case the click goes to this view instead of the link.
After spending some time with this, I have found that:
android:autoLink="web" works if you have full links in your HTML. The following will be highlighted in blue and clickable:
Some text http://www.google.com
Some text http://www.google.com
view.setMovementMethod(LinkMovementMethod.getInstance()); will work with the following (will be highlighted and clickable):
Some text http://www.google.com
Some text http://www.google.com
Some text Go to Google
Note that the third option has a hyperlink, but the description of the link (the part between the tags) itself is not a link. android:autoLink="web" does NOT work with such links.
android:autoLink="web" if set in XML will override view.setMovementMethod(LinkMovementMethod.getInstance()); (i.e.; links of the third kind will be highlighted, but not clickable).
The moral of the story is use view.setMovementMethod(LinkMovementMethod.getInstance()); in your code and make sure you don't have android:autoLink="web" in your XML layout if you want all links to be clickable.
The above solutions didn't work for me, but the following did (and it seems a bit cleaner).
First, in the string resource, define your tag opening chevrons using the HTML entity encoding, i.e.:
<a href="http://www.google.com">Google</a>
And not:
Google
In general, encode all the chevrons in the string like that. BTW, the link must start with http://
Then (as suggested here) set this option on your TextView:
android:linksClickable="true"
Finally, in code, do:
((TextView) findViewById(R.id.your_text_view)).setMovementMethod(LinkMovementMethod.getInstance());
((TextView) findViewById(R.id.your_text_view)).setText(Html.fromHtml(getResources().getString(R.string.string_with_links)));
That's it. No regular expressiones or other manual hacks are required.
I simply used this:
Linkify.addLinks(TextView, Linkify.ALL);
It makes the links clickable, given here.
If you want to add an HTML-like link, all you need to do is:
add a resource HTML-like string:
<string name="link">Google</string>
add your view to the layout with no link-specific configuration at all:
<TextView
android:id="#+id/link"
android:text="#string/link" />`
add the appropriate MovementMethod programmatically to your TextView:
mLink = (TextView) findViewById(R.id.link);
if (mLink != null) {
mLink.setMovementMethod(LinkMovementMethod.getInstance());
}
That's it! And yes, having options like "autoLink" and "linksClickable" working on explicit links only (not wrapped into HTML tags) is very misleading to me too...
The following should work for anyone who is looking for a combination of text and hyperlink within an Android app.
In string.xml:
<string name="applink">Looking for Digital Visiting card?
Get it here
</string>
Now you can utilise this string in any given View like this:
<TextView
android:id="#+id/getapp"
android:layout_width="match_parent"
android:layout_height="50dp"
android:gravity="center"
android:textColor="#color/main_color_grey_600"
android:textSize="15sp"
android:text="#string/applink"/>
Now, in your Activity or Fragment, do the following:
TextView getapp =(TextView) findViewById(R.id.getapp);
getapp.setMovementMethod(LinkMovementMethod.getInstance());
By now, you don't require to set android:autoLink="web" or android:linksClickable="true" using this approach.
I added this line to the TextView: android:autoLink="web"
Below is an example of usage in a layout file.
layout.xml
<TextView
android:id="#+id/txtLostpassword"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:autoLink="email"
android:gravity="center"
android:padding="20px"
android:text="#string/lostpassword"
android:textAppearance="?android:attr/textAppearanceSmall" />
<TextView
android:id="#+id/txtDefaultpassword"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:autoLink="web"
android:gravity="center"
android:padding="20px"
android:text="#string/defaultpassword"
android:textAppearance="?android:attr/textAppearanceSmall" />
string.xml
<string name="lostpassword">If you lost your password please contact support#cleverfinger.com.au</string>
<string name="defaultpassword">User Guide http://www.cleverfinger.com.au/user-guide/</string>
I hope this will help you;
String value = "<html>Visit my blog mysite View myactivity callback</html>";
TextView text = (TextView) findViewById(R.id.text);
text.setText(Html.fromHtml(value));
text.setMovementMethod(LinkMovementMethod.getInstance());
The easiest thing that worked for me was to use Linkify
TextView txt_Message = (TextView) view.findViewById(R.id.txt_message);
txt_Message.setText("This is link https://www.google.co.in/");
Linkify.addLinks(txt_Message, Linkify.WEB_URLS);
And it will automatically detect the web URLs from the text in the textview.
You only need to add this in the text view in XML:
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:autoLink="web"/>
Manage Linkify text color also
tv_customer_care_no.setLinkTextColor(getResources().getColor(R.color.blue));
tv_customer_care_no.setText("For us to reach out to you, please fill the details below or contact our customer care at 18004190899 or visit our website http://www.dupont.co.in/corporate-links/contact-dupont.html");
Linkify.addLinks(tv_customer_care_no, Linkify.WEB_URLS | Linkify.PHONE_NUMBERS);
Linkify.addLinks(tv_customer_care_no, Linkify.ALL);
By using linkify:
Linkify takes a piece of text and a regular expression and turns all of the regex matches in the text into clickable links:
TextView textView = (TextView) findViewById(R.id.textView);
textView.setText("http://example.com");
Linkify.addLinks(textView, Linkify.WEB_URLS);
Don't forget to
import android.widget.TextView;
Richard, next time, you should add this code under TextView at the layout XML instead.
android:autoLink="all"
This should be like this.
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/txtCredits"
android:id="#+id/infoTxtCredits"
android:autoLink="all"
android:linksClickable="true">
</TextView>
You don't need to use this code (t2.setMovementMethod(LinkMovementMethod.getInstance());) in order to make the link clickable.
Also, here's the truth: as long as you set the autoLink and the linksClickable, don't forget to add this at String.xml file so that the clickable link will work.
<string name="txtCredits">Google</string>
Here is a very one-line Android code to make phone and URL selectable from textView no matter what the string is and what the data is. You don’t need to use any HTML tags for this.
TextView textView = (TextView)findViewById(R.id.textView1);
textView.setText("some URL is www.google.com phone 7504567890 another URL lkgndflg.com ");
// Makes the textView's Phone and URL (hyperlink) select and go.
Linkify.addLinks(textView, Linkify.WEB_URLS | Linkify.PHONE_NUMBERS);
I noticed that using android:autoLink="web" thus
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:autoLink="web"/>
worked OK for URLs but since I had an e-mail address and phone number that I wanted to link as well, I ended up using this line android:autoLink="all" like this
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:autoLink="all"/>
and it worked like a charm.
The accepted answer is correct, but it will mean that phone numbers, maps, email addresses, and regular links, e.g., http://google.com without href tags will no longer be clickable since you can't have an autolink in the XML content.
The only complete solution to have everything clickable that I have found is the following:
Spanned text = Html.fromHtml(myString);
URLSpan[] currentSpans = text.getSpans(0, text.length(), URLSpan.class);
SpannableString buffer = new SpannableString(text);
Linkify.addLinks(buffer, Linkify.ALL);
for (URLSpan span : currentSpans) {
int end = text.getSpanEnd(span);
int start = text.getSpanStart(span);
buffer.setSpan(span, start, end, 0);
}
textView.setText(buffer);
textView.setMovementMethod(LinkMovementMethod.getInstance());
And the TextView should not have android:autolink. There's no need for android:linksClickable="true" either; it's true by default.
Be sure to not use setAutoLinkMask(Linkify.ALL) when using setMovementMethod(LinkMovementMethod.getInstance()) and Html.fromHTML() on properly formatted HTML links (for example, Google).
You need only this:
android:autoLink="web"
Insert this line into a TextView that can be clickable with a reference to the web. The URL is set as a text of this TextView.
Example:
<TextView
android:id="#+id/textViewWikiURL"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20sp"
android:textStyle="bold"
android:text="http://www.wikipedia.org/"
android:autoLink="web" />
Use this...
TextView.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent in=new Intent(Intent.ACTION_VIEW,Uri.parse("http://www.twitter.com/"));
startActivity(in);
}
});
And add a permission in the manifest file:
<uses-permission android:name="android.permission.INTERNET"/>
Add this to your EditText:
android:autoLink="web"
android:linksClickable="true"
This is how I solved clickable and visible links in a TextView (by code)
private void setAsLink(TextView view, String url){
Pattern pattern = Pattern.compile(url);
Linkify.addLinks(view, pattern, "http://");
view.setText(Html.fromHtml("<a href='http://" + url + "'>http://" + url + "</a>"));
}
Use the below code:
String html = "Your Domain Name"
TextView textview = (TextView) findViewById(R.id.your_textview_id);
textview.setMovementMethod(LinkMovementMethod.getInstance());
textview.setText(Html.fromHtml(html));
[Tested in Pre-lollipop as well as in Lollipop and above]
You can get your HTML string from the backend or from your resources files.
If you put your text as an resource string, make sure to add the CDATA tag:
<string name="your_text">![CDATA[...Link Title ...]]</string>
Then in code you need to get the string and assign it as HTML and set a link movement method:
String yourText = getString(R.string.your_text);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
textView.setText(Html.fromHtml(yourText, Html.FROM_HTML_MODE_COMPACT));
} else {
textView.setText(Html.fromHtml(yourText));
}
try {
subtext.setMovementMethod(LinkMovementMethod.getInstance());
} catch (Exception e) {
//This code seems to crash in some Samsung devices.
//You can handle this edge case base on your needs.
}
Create an extension method on SpannableString:
private fun SpannableString.setLinkSpan(text: String, url: String) {
val textIndex = this.indexOf(text)
setSpan(
object : ClickableSpan() {
override fun onClick(widget: View) {
Intent(Intent.ACTION_VIEW).apply { data = Uri.parse(url) }.also { startActivity(it) }
}
},
textIndex,
textIndex + text.length,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE
)
}
Use it to make string in your TextView clickable:
myTextView.apply {
movementMethod = LinkMovementMethod.getInstance()
val googleUrl = "http://www.google.com"
val microsoftUrl = "http://www.microsoft.com"
val google = "Google"
val microsoft = "Microsoft"
val message = SpannableString("$google & $microsoft").apply {
setLinkSpan(google, googleUrl)
setLinkSpan(microsoft, microsoftUrl)
}
text = message
}
Enjoy!
I had to hunt this down in a couple places, but I finally got this version of the code to work.
File strings.xml:
<string name="name1"><a href="http://www.google.com">link text1</a></string>
<string name="name2"><a href="http://www.google.com">link text2</a></string>
File myactivity.xml:
<TextView
android:id="#+id/textview1"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_marginTop="5dp" />
<TextView
android:id="#+id/textview2"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_marginTop="5dp" />
File myactivty.java (in onCreate()):
TextView tv1 = (TextView)findViewById(R.id.textview1);
TextView tv2 = (TextView)findViewById(R.id.textview2);
tv1.setText(Html.fromHtml(getResources().getString(R.string.name1)));
tv2.setText(Html.fromHtml(getResources().getString(R.string.name2)));
tv1.setMovementMethod(LinkMovementMethod.getInstance());
tv2.setMovementMethod(LinkMovementMethod.getInstance());
This will create two clickable hyperlinks with the text link text1 and link text2 which redirect the user to Google.
Add CDATA to your string resource
Strings.xml
<string name="txtCredits"><![CDATA[Google]]></string>
The reason you're having the problem is that it only tries to match "naked" addresses. Things like "www.google.com" or "http://www.google.com".
Running your text through Html.fromHtml() should do the trick. You have to do it programmatically, but it works.
If using an XML-based TextView, for your requirement you need to do just two things:
Identify your link in the string, such as "this is my WebPage."
You can add it in the XML content or in the code.
In the XML content that has the TextView, add these:
android:linksClickable="true"
android:autoLink="web"
I just wasted so much time to figure out you have to use getText(R.string.whatever) instead of getString(R.string.whatever)...
Anyway, here is how I got mine working. With multiple hyperlinks in the same text view too.
TextView termsTextView = (TextView) getActivity().findViewById(R.id.termsTextView);
termsTextView.append("By registering your account, you agree to our ");
termsTextView.append(getText(R.string.terms_of_service));
termsTextView.append(", ");
termsTextView.append(getText(R.string.fees));
termsTextView.append(", and the ");
termsTextView.append(getText(R.string.stripe_connected_account_agreement));
termsTextView.setMovementMethod(LinkMovementMethod.getInstance());
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/termsTextView"/>
String example:
<string name="stripe_connected_account_agreement">Stripe Connected Account Agreement</string>

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