You could implement this notification using a floating DIV section display during activity, or using a simple message on the browser's status bar (although this is considered bad form by some).
您可以在活动过程中使用浮点DIV部分显示或使用浏览器状态栏上的简单消息实现此通知(不过，有些人认为这不是好的形式)。
Although broadcast receivers don't display a user interface, they may create a status bar notification to alert the user when a broadcast event occurs.
尽管broadcast receivers并不显示用户界面，它们可能创建一个状态栏通知来告知用户广播何时发生。
A semi transparent notification bar (see screenshot below), slides down from the top of the screen when you update your status via the Web.
当用户通过网页更新Twitter状态时，会从网页上方滑出一个半透明的通知栏。
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