[Android layout] Add a scroll bar for textview

In the layout, the textview text is too long and you want to add a scroll bar for it so that the text can be displayed in a scroll manner.

The method retrieved through the network is actually very simple. It is to add the Android: scrollbars attribute to the textview in the layout file. The parameter can be either horizontal or vertical scrolling.

<Textview Android: Id = "@ + ID/textview_message" Android: layout_width = "match_parent" Android: layout_height = "match_parent"Android: scrollbars = "vertical"Android: singleline = "false" Android: text = "textview"/>

However, no matter how long the text is during the test, textview cannot be rolled.

It turns out that configuring only properties is not enough.CodeTo create a scroll bar object for textview:

Textview. setmovementmethod (scrollingmovementmethod. getinstance ());

In this way, when the text is too long, you can slide the textview to display it.