在大多数模拟器中，您将注意到旋转视窗后将向外扩展图像以匹配设备的480像素的新宽度。

On most of the simulators, you'll notice that rotating the viewport causes the image to be scaled out to match the new 480-pixel width of the device.

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对话窗口图像高度和宽度(64和64像素)。

The chat window image height and width (64 and 64 pixels).

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图像的高度和宽度的最大值被设置为 150 像素，但是保持高宽比例不变，因此图像没有变形。

The height and width are maxed out at 150 pixels, but the ratio of the height-to-width is preserved so the images are not distorted.

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