How do I use databinding to combine a string from resources with a dynamic variable in XML?

Question

I have a TextView which has a hardcoded string and I have a dynamic variable that I want to put at the end of this string. This is my code:

Answer 1

Many ways to concat strings

1. Using string resource (Recommended because Localization)

android:text= "@{@string/generic_name(user.name)}"

Just make string resource like this.

Hello %s

2. Hard coded concat

android:text="@{`Hello ` + user.name}"/>

This is useful when you need hardcoded append like + for phone number.

3. Using String's concat method

android:text="@{user.firstName.concat(@string/space).concat(user.lastName)}"

Here space is an html entity which is placed inside strings.xml. Because XML does not accept Html entities or special characters directly. (Link Html Entities)

\u0020

4. Using String.format()

android:text= "@{String.format(@string/Hello, user.name)}"

you have to import String class in layout in this type.

5. concat two strings by string resource.

android:text="@{@string/generic_name(user.firstName,user.lastName)}"

In this case put a string resource in strings.xml

%1$s, %2$s

There can be many other ways, choose one you need.