你如何为 ImageView 设置布局参数()? [英] How do you setLayoutParams() for an ImageView?

问题描述

我想为 ImageView 设置 LayoutParams 但似乎无法找到正确的方法.

I want to set the LayoutParams for an ImageView but cant seem to find out the proper way to do it.

我只能在 API 中找到各种 ViewGroups 的文档，而不是 ImageView.然而 ImageView 似乎有这个功能.

I can only find documentation in the API for the various ViewGroups, but not an ImageView. Yet the ImageView seems to have this functionality.

此代码不起作用...

myImageView.setLayoutParams(new ImageView.LayoutParams(30,30));

我该怎么做?

推荐答案

您需要设置 ImageView 所在的 ViewGroup 的 LayoutParams.例如，如果您的 ImageView 在一个 LinearLayout 内，那么您创建一个

You need to set the LayoutParams of the ViewGroup the ImageView is sitting in. For example if your ImageView is inside a LinearLayout, then you create a

LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(30, 30);
yourImageView.setLayoutParams(layoutParams);

这是因为它的父视图需要知道分配给视图的大小.

This is because it's the parent of the View that needs to know what size to allocate to the View.

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