Android ScrollView's ContentViewGroup's Child not respecting match_parent - android

I have a layout which look like the following:
ScrollView(match_parent, match_parent)
- RelativeLayout(match_parent, 1000dp)
- ImageView(match_parent, match_parent)
The problem is that ImageView's height is not matching parent when it is being layout.
Anyone know why this is happening and any solution?

A ScrollView will automatically force its child to wrap its content, no matter whether you tell it to FILL_PARENT or MATCH_PARENT or specify any other size... Thats why it is not working...

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how to have recyclerview horizontal imageview share a side like a carousel

I have a recyclerview set up with a linear layout at horizontal where each imageview takes up the full width of the visible recyclerview. I was wondering how to fix this such that the imageview items are next to each other the way you'd see this in a carousel. A copy of what I'm seeing is found below. Thanks!
In your layout item, which you are inflating using the adapter class.. you should define the width of the layout as either wrap_content or a fixed value(for eg: 200dp or something else according to your need). I think you have used match_parent that's why you are facing such an issue.
Feel free to ask if something is unclear.
Looks like the ImageView has been resized based on the layout_height specified and you have a value of wrap_content on the layout_width. You should set the ImageView's attribute android:adjustViewBounds to true.
Reference: https://developer.android.com/reference/android/widget/ImageView#attr_android:adjustViewBounds

Couldn't change the height and width of a layout

In background it is listed as a constraintLayout , I am trying to insert a Linear Horizontal Layout over it. Whenever I assign match_parent to both android:layout_width and android:layout_height , it automatically reverts back to some Fixed Dp (like 395dp for width and 587dp for height) . How to change this setting?
Screenshot Here
Match parent won't work inside a constraint layout, you have to define the relative position inside the constraint layout. You have to assign the layout_constraintStart_toStartOf and layout_constraintEnd_toEndOf

Android: My text is being displayed vertically in a programmatically set TextView

I'm adding a TextView to a parent LinearLayout RelativeLayout programmtically. There is enough space for the text to be displayed horizontally but for some reason the text is displayed vertically. Does anyone know what's going on here?
It's really hard to say what is the problem without looking at your XML and layout code. In my experience, sometimes it happens when the parent layout has height set as WRAP_CONTENT and the views inside it have wrong weight config, for example one has weight but WRAP_CONTENT and the other MATCH_PARENT (Sorry, I don't remember the case exactly). I suggest you check your LayoutParams carefully or set a fixed width and height for the TextView to see what is the problem.
You can also post your code here so we can have a look at it

android:layout_alignParentBottom is ignored when used without explicit layout height as a row in ListView

When I use a RelativeLayout with either fill_parent or wrap_content as height and an element which specifies: android:layout_alignParentBottom="true" it is ignored and it is aligned at the top. Setting the height of the RelativeLayout to an explicit value makes it work. Any clues?
This seems to be a bug in Android itself, see http://code.google.com/p/android/issues/detail?id=1394.
I worked around it by wrapping my RelativeLayout in a FrameLayout and putting my bottom aligned view as a children of the FrameLayout with android:layout_gravity="bottom". This hinders you from referencing it from within the RelativeLayout so you'll have to work around that (for example using margins).
If anyone has a better workaround, please share.
When you inflate the layout, use inflate(R.layout.whatever, parent, false), where parent is the ListView. If you don't do that (e.g., you pass null for the parent), RelativeLayout gets strange in list rows.
My hack for this andriod bug:
ViewGroup.LayoutParams lp=(ViewGroup.LayoutParams)view.getLayoutParams();
lp.height=view.getContentHeight();//hack for android bug about ViewGroup.LayoutParams.WRAP_CONTENT and android:layout_alignParentBottom="true" on landscape orientation
view.requestLayout();
act.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR);
I was able to get the proper alignment by specifying the problematic TextView with:
android:id="#+id/must_be_bottom_left"
android:layout_alignParentRight="true"
android:layout_alignParentBottom="true"
android:layout_below="#id/xxx"
where xxx was the id of a TextView that has android:layout_below="#id/yyy"
and yyy is a TextView that is always above both xxx and must_be_bottom_left.
The contents of my list items can vary so that sometimes the "xxx" TextView is View.GONE, but even then the layout works as expected.
I don't know how fragile or merely seredipidous this work-around is. I am using Android 1.6 and I haven't tested it for forward compatability.

Hierachy of android:layout_width/ height between containers and views

What is the relationship between android:layout_width & android:layout_height in the container and the views contained within?
For instance if I have a LinearLayout with the layout width and height set to fill_parent, and I have a Button with those values set to wrap_content it uses the value from the Button, like the Button values overide the LinearLayout.
However if i swap them around so that the LinearLayout values are both wrap_content and the Button values are now fill_parent it still uses wrap_content, this time not overriding the values, but using the values supplied with the LinearLayout.
Could someone explain how they relate as this is very confusing to me?
Thanks
Kyros
http://developer.android.com/guide/topics/ui/how-android-draws.html
This article explains it very well

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