datagrid - Clear the renderer from a Grid column in Vaadin 8.1 -


in vaadin framework 8.1 app, on grid widget, how 1 clear column renderer after setting it?

we can set renderer on grid.column calling setrenderer. how un-set it?

passing null results in null pointer exception:

java.lang.nullpointerexception: renderer can not null

the default behavior before setting renderer seems calling tostring on column’s objects.

➟ how default behavior?

there no way ask vaadin revert default.

before setting new renderer, can ask existing default renderer.

renderer<?> r = this.columninstant.getrenderer() ;

then later re-apply it.

mygridcolumn.setrenderer( r ) ;

commonly, default renderer com.vaadin.ui.renderers.textrenderer. can instantiate new 1 if more convenient retaining reference old one.

mygridcolumn.setrenderer( new com.vaadin.ui.renderers.textrenderer() ) ;

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