Why do android methods accept View objects, but the objects are unused?

为什么安卓方法接受视图对象，但未使用的对象呢？

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View objects are the basic units of user interface expression on the Android platform.

View对象是Android平台中用户界面体现的基础单位。

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Radiography is the use of ionizing electromagnetic radiation such as X-rays to view objects.

放射学是利用电离电磁辐射，如X射线视图对象。

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NASA says this will provide a panoramic view of Earth and objects in space.

VOA: standard.2010.02.08

This would roughly be a view according to which there are minds, but there aren't really physical objects.

这个观点估计是从人只有心灵,而不是物理对象的观点出发的

耶鲁公开课 - 死亡课程节选

So on the monist view-- which we'll call "Physicalism," because it says that what people just are, are these physical objects--on the physicalist view, a person is just a body that can...you fill in the blank.

所以一元论观点,我们称作其为"物理主义",因为它认为人只不过,是个物理对象,物理主义认为,人只是可以...你能举出很多例子

耶鲁公开课 - 死亡课程节选

Tiny carbon tubes can be used to hide three-dimensional objects from view, according to a team of researchers.

BBC: Carbon nanotubes experiment results

When leaders believe that their sole purpose is to produce profit, they tend to view their customers as objects.

FORBES: Purpose-Driven Selling: It Beats Quota-Driven Every Time

Most of the objects on view belonged to men, and although elaborately jewelled, the daggers and swords were entirely functional weapons.

BBC: Museum displays Indian treasures