showWidget static method

CancelFunc showWidget({
  1. required ToastBuilder toastBuilder,
  2. UniqueKey? key,
  3. String? groupKey,
})

Displays a Widget on the screen that can persist across multiple pages. toastBuilder is the builder function to generate the Widget to be displayed. key represents a credential for this Toast. With this key, you can remove the Widget defined by the current key using remove. groupKey represents a group key, mainly used for removeAll and remove. CancelFunc is the close function, and actively calling it will close this Toast. This is a core method.

显示一个Widget在屏幕上,该Widget可以跨多个页面存在 toastBuilder 生成需要显示的Widget的builder函数 key 代表此Toast的一个凭证,凭此key可以删除当前key所定义的Widget,remove groupKey 代表分组的key,主要用于removeAll和remove CancelFunc 关闭函数,主动调用将会关闭此Toast 这是个核心方法

Implementation

static CancelFunc showWidget({required ToastBuilder toastBuilder, UniqueKey? key, String? groupKey}) {
  final gk = groupKey ?? defaultKey;
  final uniqueKey = key ?? UniqueKey();
  final CancelFunc cancelFunc = () {
    remove(uniqueKey, gk);
  };

  botToastManager.insert(gk, uniqueKey, toastBuilder(cancelFunc));
  return cancelFunc;
}