如何在RelativeyLayout中以编程方式将视图放置在另一个视图下？

Question

If I add two View to the RelativeLayout , the newer one overlaps the older one. But for some reasons, I cannot add the View that I want to place at the bottom first. Could anyone tell me how I can solve this?

RelativeLayout rela = (RelativeLayout) findViewById(...);
rela.addView(v1);
rela.addView(v2);

I want v1 to OVERLAP v2 . I cannot use other Layout because this is one part of a large project.

Answer 1

Since I have not got a correct answer. I have to rewrite the whole program. This is what I did: I added v2 first, and then v1 . Then I just set the visibility of v1 to View.Gone . I do not know if there is a better way to solve this.

Answer 2

如果您想在其他视图上添加视图...。那么您可以使用FrameLayout...。在RelativeLayout中...希望这对您有所帮助。

Answer 3

If you want to add a view on bottom of other view. You can use LinearLayout (in vertical). But if you want to add view to bottom of RelativeLayout. Try this:

First, your RelativeLayout needs an ID if you want to reference it:

RelativeLayout rLayout = (RelativeLayout)findViewById(R.id.yourRelativeId);

Then create some LayoutParams for the object (in this case, your admob adview) that tell it to align itself to the bottom (and not align to any other views, this way it isn't pushed off-screen or moved by the other views):

RelativeLayout.LayoutParams rLParams = new RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT);
rLParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, 1);

Next, add the view to your RelativeLayout with your LayoutParams:

rLayout.addView(yourAdView, rLParams);

Answer 4

You can add Rule to your RelativeLayout . Say for ex:

   p.addRule(RelativeLayout.ALIGN_BOTTOM, existingView.getId());

The above rule will allign the new view below the existing view. You can read more about this here