本例中的示例样式只是镜像由默认工具栏样式使用的背景渐变，并将其应用于内容显示区域的背景。

In this case, the example style simply mirrors the background gradient used by the default toolbar style, and applies it to the background of the content display area.

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定义图2中登录屏幕例子的最后工作是用曲线绘制渐变背景。

The final piece to defining the example login screen in Figure 2 is to draw the gradient background with the curved line.

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矢量绘制用于完成各种任务，比如填充背景颜色、边框颜色和渐变等。

The vector drawing is employed for a variety of tasks, such as filling the background color, border color, gradients, fills, and strokes.

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