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Password regex string in strings.xml file in android

I have declared a regex for password validation purposes in strings.xml file.
The criteria is
-should be atleast 8 characters
-should contain atleast one upper case letter
-should contain atleast one lower case letter
-should contain atleast one special character within these "##$%^+&="
So my whole regex looks like this now
^(?=.[0-9])(?=.[a-z])(?=.[A-Z])(?=.[##$%^+&=])(?=\S+$).{8,}$
But when I enter this, I get an error saying that & is
"Unescaped or non terminated character entity/reference"
So instead I used the escape sequence as & but the validation fails for &
I would b glad if anyone could help me out on this!!

Use * quantifers in the look-aheads. Right now, you check if 2nd character in the string meets your conditions. We need to test them all in the string.
^(?=.*[0-9])(?=.*[a-z])(?=.*[A-Z])(?=.*[##$%^+&=])(?=\S+$).{8,}$
Here is a demo.
EDIT
Since the regex is located inside the XML code, it should be properly encoded. Or, use it inside CDATA block.

Are you missing a parameter in your curly braces? The last bit "{8,}" seems off.

Copy "Text" column content only from logcat view

Does anybody know of a way, or something that could ease the process of manually removing the extra strings, to get only the content of the "Text" column in the logcat view when copying the logcat content?

Seems not possible, but I've drawn an attention to it through android issues portal:
https://code.google.com/p/android/issues/detail?id=77883&thanks=77883&ts=1413891569
Hopefully it will be implemented soon enough, as it woudl be really helpful.

There are two ways to achieve that:
The First Way, if you have multiple lines:
copy your text to Notepad++ or any editor that uses Regex.
press ctrl+f and choose Replace tab.
use a Regex format in order to remove all the unnecessary tags info, for example in the case of System.out messages, the Regex formula will be:
\d*-\d* \d*:\d*:\d*\.\d*: I\/System\.out\(\d*\):
if the messages are like:
03-14 14:44:17.557: I/System.out(18293):
finaly, use this formula in [find what] field and use a white space in the [Replace with] field, and don't forget to choose Regular Expression choice in the (search mode) field.
The second way, if you have a single line of log: as described here:
Right click on the line in Logcat which you wish to copy text from
Click “find similar messages”
In the window that pops up the text is contained in the field “by Log Message:”
This text can now be copied via Ctrl+C

Special characters such as PI, or subscripts on the xml of Android

I am coding a maths app and I want to show special characters such as PI, E, or subscripts and all those things.
I want to show them on the xml file of the layout.
How can I do it?
Thank you guys for all!

You can use the Unicode value for the symbol, preceded by \u. For example, the pi character is "\u03C0"

This site: http://www.dionysia.org/html/entities/symbols.html has list of elements which can be used in xml. Just watch the second element. For example:
square = &#8730
THen you need to conver it. For example:
String symbol = Html.fromHtml(square);
Alternative link is here: http://www.hrupin.com/2011/12/how-to-put-some-special-math-symbols-in-textview-editview-or-other-android-ui-element

The characters in a string resource are unicode. You can include special characters using the \unnnn notation.
There are many places to look up the unicode values on the web. Google found this one for me:
http://inamidst.com/stuff/unidata/

Android Replace "..." with ellipsis character

Since AVD tools 16 I'm getting this warning:
Replace "..." with ellipsis character (..., …) ?
in my strings.xml
at this line
<string name="searching">Searching...</string>
How do I replace ...? Is it just literally …?
Could someone explain this encoding?

… is the unicode for "…" so just replace it. It's better to have it as one char/symbol than three dots.

To make thing short just put … in place ...
Link to XML character Entities List
Look at Unicode column of HTML for row named hellip

If you're using Eclipse then you can always do the following:
Right click on the warning
Select "Quick Fix" (shortcut is Ctrl + 1 by default)
Select "Replace with suggested characters"
This should replace your three dots with the proper Unicode character for ellipsis.
Just a note: The latest version of ADT (21.1) sometimes won't do the replace operation properly, but earlier versions had no problem doing this.
This is the character: …

The solution to your problem is:
Go to Window -> Preferences -> Android -> Lint Error Checking
And search for "ellipsis". Change the warning level to "Info" or "Ignore".

This answer is indirectly related to this question:
In my case textView1.setTextView("done&#8230"); was showing some box/chinese character. Later, I checked into fileformat.info for what the value represents and I found this is a Han character.
So, what to do? I searched for "fileformat.info ellipse character" and then everything became clear to me once I saw its values are;
UTF-16 (hex) 0x2026 (2026)
UTF-16 (decimal) 8,230
So, you have several encoding available to represent a character (e.g. 10 in Decimal is represented as A in hexa) so it is very important to know when you are writing an unicode character, how receiving function decodes it. If it decodes as decimal value then you have to provide decimal value, if it accept hexadecimal then you have to provide hexadecimal.
In my case, setTextView() function accepts decimal encoded value but I was providing hexadecimal values so I was getting wrong character.

The quick fix shortcut in Android Studio is Alt + Enter by default.

Best not to ignore it as suggested by some, it seems to me. Use Android Studio to correct it (rather than actually typing in the character code), and the tool will replace the three dots with the three-dot unicode character. Won't be confusing to translators etc.

writing some characters like '<' in an xml file

since the beginning of my programmation, I used some special character like "<-", ""<<" im my string.xml in Eclipse while developping for Android.
All worked fine for one year, but today, i just wanted to make some minor changes and began to edit my xml files.
I get now compilation error on these characters because eclipse believe it's part of the xml blocks.
Any idea on how I could add this symbol "<" in my xml files?
Thank a lot.

Use
< for <
> for >
& for &

Another way to insert special character follow Moss guide: How can I write character & in android strings.xml by used Unicode definition:
Example:
<string name="item_unknown">\u003c Item Unknown \u003e</string>
which present in string :
< Item Unknown >

I stumbled upon this question, as I use HTML markup in my strings.
If you refer to the Android String Resources documentation,
in the section:
"Styling with HTML markup"
you will see that in strings.xml, you need to use &amplt; for an opening bracket, but you can safely use backslash and a closing bracket. For example:
<b>Text</b>
can be written as:
<b>Text</b>
in your strings.xml.
If using this HTML string in your code, you can use:
Html.fromHtml( getResources().getString(R.string.yourHTMLString )
and the output will be your bold string!