转载：http://stackoverflow.com/questions/4913643/rect-and-rectf-in-android-sdk

UsingRectyou define its edges using integers and usingRectFthey are defined as floats.

Looking at them more carefully I have spotted a few differences actually. I will only list what one implementation has more compared to the other one.

Rect

• equals(Object obj)(for some reason it as it's own implementation of equals)
• exactCenterX()
• exactCenterY()
• flattenToString()
• toShortString()
• unflattenFromString(String str)

RectF

• round(Rect dst)
• roundOut(Rect dst)
• set(Rect src)

So apparently there are some differences.

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