Flutter 将样式应用于子小部件是否有必要将其包装在容器小部件中

Question

Is it necessary to use wrap another widget (ie Text, image etc) inside the Container widget as a child, if we want to apply styling to the child widget? In other words, can I apply styling to my Text or Image widgets without wrapping them inside Container widgets?

Answer 1

Yes its is necessary to wrap your widget using a Container or DecoratedBox .

The reason is that in flutter decorations are applied using the BoxDecoration class. If you want use styles like Borders, Background Colors Shadows etc you would need to use a Widget that uses a BoxDecoration .

If you don't want to use a Container you can use the DecoratedBox widget provided by flutter amongst others.

If you want to apply styles only to your text data, then you don't need to use Container or DecoratedBox , as pure text styles can be provided to the Text Widget, by providing the style property with the a TextStyle Class.

DecoratedBox Widget Docs

BoxDecoration Docs

TextStyle Docs