android getIntrinsicHeight和getIntrinsicWidth是什么意思？ [英] what does android getIntrinsicHeight and getIntrinsicWidth mean?

问题描述

我对Android Drawable类中的两种方法感到困惑

Hi I am confused by the two methods from Android Drawable class

getIntrinsicHeight()
getIntrinsicWidth()

api定义为
http://developer.android.com/reference/android/graphics/drawable/Drawable.html#getIntrinsicHeight（）

固有高度/宽度是什么意思？
i表示它是实际图像的宽度吗？

what does the word intrinsic height/width mean? i mean is it a width of the actual image?

推荐答案

如果您想了解的含义，内在，它不过是对象拥有的实际属性。在我们的例子中， getIntrinsicWidth / Height 只是意味着为您提供该可绘制对象的默认宽度/高度。

If you want to know the meaning of intrinsic, it is nothing but the actual property possessed by an object. In our case getIntrinsicWidth/Height simply means to provide you with the default width/height of that drawable.

这将返回您放置在资源文件夹中的可绘制对象的确切大小，而无需进行任何修改。

This returns the exact size of the drawable which you have put in the resource folder without any modification.

现在您必须知道 getWidth 或 getHeight 将返回一个值，该值可能会根据您在XML布局中为 ImageView 指定的宽度和高度而有所不同。

Now you have to know that getWidth or getHeight will return a value which might vary according to the width and height you specify for your ImageView in your XML layout.

假设您提供了 ImageView 的宽度和高度为 100 * XML布局中为100 ，用作背景的可绘制对象的大小为200 * 200。

Let's say that you have provided the width and height of your ImageView as 100*100 in the XML layout and the drawable you used as the background is of size 200*200.

现在 getIntrinsicWidth 必须返回200，而 getWidth 必须返回100。

Now getIntrinsicWidth must return 200 whereas getWidth must return 100.

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