如何更改现有布局参数的宽度和高度 [英] How to change width and height of existing layout params

问题描述

请考虑RelativeLayout内的ImageView，它具有RelativeLayout的一些特定布局参数.我需要根据屏幕尺寸以编程方式更改ImageView的宽度和高度.

Please consider ImageView inside RelativeLayout it has some specific layout params for RelativeLayout. I need to change the width and height of my ImageView programatically according to the screen size.

如何保存所有布局参数，但仅更改宽度和高度

How can I save all layout parameters but only change width and height

以下代码创建了空的布局参数，但是我需要保存旧的参数并仅更改高度和宽度.

Following code creates empty layout params but I need to save my old params and change only height and width.

   imageViewArticleImage.setLayoutParams(new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, mScreenSize.y / 3));

我该如何实现?

推荐答案

使用getLayoutParams获取当前的布局参数.更改宽度和高度，然后从那里开始.如果该视图已经可见，则调用requestLayout强制进行新的布局传递.

Use getLayoutParams to get the current layout params. Change the width and height and go from there. IF the view is already visible, call requestLayout to force a new layout pass.

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