以编程方式将imageview的高度设置为matchparent

Question

我需要以编程方式将imageview的高度设置为matchparent.如果它是一个固定的高度,我知道如何设置.

但我怎么能把它设置为matchparent？

编辑:

实际上父布局的高度是动态的.所以我需要将imageview的高度设为父级的高度.

Answer 1

imageView.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));

Answer 2

imageView.getLayoutParams().height= ViewGroup.LayoutParams.MATCH_PARENT;

Answer 3

imageView.setLayoutParams
    (new ViewGroup.MarginLayoutParams
        (width, ViewGroup.LayoutParams.MATCH_PARENT));

布局参数的类型取决于父视图组.如果你选错了它会导致异常.

Answer 4

对于 Kotlin 用户

val params = mImageView?.layoutParams as FrameLayout.LayoutParams
params.width = FrameLayout.LayoutParams.MATCH_PARENT
params.height = FrameLayout.LayoutParams.MATCH_PARENT
mImageView?.layoutParams = params

在这里我使用，FrameLayout.LayoutParams因为我的 views( ImageView) 父母是FrameLayout

Answer 5

I had same issue. Resolved by firstly setting :

imageView.setMinHeight(0);
imageView.setMinimumHeight(0);

And then :

imageView.getLayoutParams().height= ViewGroup.LayoutParams.MATCH_PARENT;

setMinHeight is defined by ImageView, while setMinimumHeight is defined by View. According to the docs, the greater of the two values is used, so both must be set.

Answer 6

启动 LayoutParams 。

分配父级的宽度和高度并将其传递给 imageview 的 setLayoutParams 方法