strings.xml

<resources>
    <string name="app_name">ExpandableTextView</string>
    <string name="expand">展开</string>
    <string name="collapse">收起</string>
    <string name="test_content">The story of a Chinese couple at Oxford University who first met each other as deskmate in middle school and recently married each other has gone viral, southcn.com reported.
        Zhou Si, the groom, and Chen Mengge, the bride, married each other on Aug 18 and will together go to Oxford University to pursue their doctoral degrees later this year.
        They were deskmate in middle school and then both were admitted by same high school but not in same class.</string>
</resources>