How TextView enables horizontal and vertical scrolling in Android

One, just want to let TextView display a line, but the text more than the length of TextView how to do?
Show ellipses at the beginning
Android:singleline= "true"
Android:ellipsize= "Start"

Ellipses are displayed at the end
Android:singleline= "true"
Android:ellipsize= "End"

Show ellipsis in middle
Android:singleline= "true"
Android:ellipsize= "Middle"

Horizontal Auto-scrolling (marquee effect)
Android:singleline= "true"
Android:ellipsize= "Marquee"
android:marqueerepeatlimit= "Marquee_forever"
Android:focusable= "true"
Android:focusableintouchmode= "true"

The above 4 effects are added android:singleline= "true", because TextView is automatically wrapped by default

Android:ellipsize is setting the text too long, how to display

Android:marqueerepeatlimit= "Marquee_forever" is set to repeat forever, of course you can also set specific numbers

Android:focusable= "true" and android:focusableintouchmode= "true" must be added, otherwise the scrolling effect does not come out

Second, how to let TextView can scroll vertically?
Add the following sentence to the Java code to achieve vertical scrolling

Textview.setmovementmethod (Scrollingmovementmethod.getinstance ());

How TextView enables horizontal and vertical scrolling in Android