Develop Reference

selectableItemBackground and other Drawables disappear when there is an ImageView behind

My View hierarchy looks like this:
<RelativeLayout>
<ImageView
android:id="#+id/my_background_image"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
androd:id="#+id/my_image"
android:clickable="true"
android:foreground="?attr/selectableItemBackground" />
</LinearLayout>
</RelativeLayout>
If I set an image Drawable to my_background_image, the ripple drawable provided by ?attr/selectableItemBackground over my_image disappears. It doesn't matter what image I use, the ripple is completely gone. I've also found that the background (which includes the down arrow) of any "foreground" Spinner also disappears.
This is very strange behaviour. Does anyone know why this is happening?
Edit: I'd like to add that the ripple appears as long as src="..." is not included in the background ImageView or setImageDrawable() is not called on it.

Setting a transparent background to the LinearLayout solves the problem.
"Borderless buttons draw their content on the closest background. Your button might not be having background between itself and the ImageView, so it draws underneath the ImageView" from This Answer

Android Studio - change background image size

So, i wanted to put an image in background of my screen. My problem is that if i just add the image to "background" it will fill all the screen, and my image gets defaced. I could put as an ImageView, but the problem is that i have an expandableListView in the same screen, and i wanted the image to stay behind, as a background.
Any idea how to do this?
Can have 2 solutions: Put as an imagemView but behind the list. Or add as a background but resize it. How can i do it?
Here is what happened:
He is what happens if i put the image as an imageView:

Yes this is very easy to achieve with relative layouts
<RelativeLayout ... >
<ImageView ...
android:layout_alignParentTop="true"
android:scaleType="centerCrop“ />
<ListView ...
android:layout_alignParentTop="true“ />
</RelativeLayout>
With a relative layout z-index is decided by the order you declare the tags, so stuff towards the bottom of the xml is in front of stuff from closer to the top, when they are in the same position.

Use a FrameLayout (Inside FrameLayout view written on top will appear on top and so on)
<FrameLayout
android:layout_height="match_parent"
android:layout_width="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android">
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
></ListView>
<ImageView
android:layout_width="your_width_in_dp"
android:layout_height="your_height_in_dp"
/>
</FrameLayout>
You can also place FrameLayout inside another layout.

Material ripple effect hidden by other view in layout

I added a ripple effect on a ImageButton, however it is hidden by an ImageView used as a background for the parent view RelativeLayout.
Here's the layout file:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="172dp"
android:orientation="vertical"
android:theme="#style/ThemeOverlay.AppCompat.Dark">
<ImageView
android:id="#+id/drawerBackgroundImageView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:src="#drawable/drawer_background"/>
[...]
<ImageButton
android:id="#+id/drawerLogoutButton"
android:layout_width="32dp"
android:layout_height="32dp"
android:layout_alignBottom="#id/drawerEmailTextView"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_marginEnd="#dimen/activity_horizontal_margin"
android:layout_marginRight="#dimen/activity_horizontal_margin"
style="#style/FlatButtonStyle"
android:scaleType="centerInside"
android:src="#drawable/ic_logout_white_24dp"/>
</RelativeLayout>
(there's a bunch of other views but they're irrelevant here)
I'm using an ImageView as the background for the RelativeLayout as I need to set a specific scaleType for the image, so I can't use the basic android:background property.
The ripple effect is hidden as it doesn't have a mask layer (I want it to extend out of the button's bounds) and thus uses the ImageButton's parent view to be displayed. The effect is perfectly visible if I remove the ImageView.
Is there a way to get the ripple effect to be shown above the problematic ImageView?

I had exactly the same issue and solved it using this thread: https://code.google.com/p/android/issues/detail?id=155880
Issue preview:
Before solved:
After solved:
Explanation:
"Borderless buttons draw their content on the closest background. Your button might not be having background between itself and the ImageView, so it draws underneath the ImageView."
Solution:
"Use a transparent background (android:background="#android:color/transparent") on some layout containing the button (beneath the ImageView). This will dictate what the maximum bounds of the ripple effect is."
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
...>
<!-- Your background ImageView -->
<ImageView
android:id="#+id/drawerBackgroundImageView"
android:src="#drawable/drawer_background"
... />
<!-- ... -->
<!-- HERE, you need a container for the button with the transparent
background. Let's say you'll use a FrameLayout -->
<FrameLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#android:color/transparent">
<!-- Maybe more items -->
<!-- Button with borderless ripple effect -->
<ImageButton
android:id="#+id/drawerLogoutButton"
android:background="?selectableItemBackgroundBorderless"
... />
</FrameLayout>
</FrameLayout>
Hope it helps.

I am experiencing same issue. Only solution I have found so far is not 100% okay since ripple is masked by view (its not borderless).
The solution (workaround):
surround your ImageButton with other view and set ripple to the foreground instead of the background in your layout like this:
<ImageView ... />
<FrameLayout
...
android:clickable="true"
android:focusable="true"
android:foreground="?attr/selectableItemBackgroundBorderless" >
<ImageButton />
</FrameLayout>
I would be really glad if someone explain why the ripple is drawn behind the image. Also if you look at Google Photos app, in image detail they have transparent icons over image view with ripple. I would like to replicate this, but I am not able to make the ripple to be in foreground. Does anybody know how to put transparent imagebuttons over everything but still have the ripple?
EDIT final solution
here you can find exactly same question link
with great explanation what is happening. the solution is the same but on top of that it solves rectangular mask by adding
android:clipChildren="false"
android:clipToPadding="false"
to your layout. now your ripple should be borderless (it worked for me).
The layout xml could be something like this:
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
...
android:clipChildren="false"
android:clipToPadding="false">
<ImageView ... />
<FrameLayout
...
android:clickable="true"
android:foreground="?attr/selectableItemBackgroundBorderless">
<ImageView ... />
</FrameLayout>
</FrameLayout>

I'm aware this is an old post but I did struggle with this quite a bit today hence I'm posting what I was finally able to figure out and maybe someone else might benefit from it. One key emphasis beforehand, please do always RTFM!
1) The story
I aimed to use the unbounded ripple effect on Tab Items and consequently have it spread all over the AppBarLayout area. I had applied #android:color/transparent to TabLayout as the first wrapping parent and gave AppBarLayout a background color, nevertheless the ripple was still being cut off right at the borders of TabLayout's height.
2) The moral of the story (RTFM)
So I run to the nest of Android knowledge: The Documentation, and spotted this:
?android:attr/selectableItemBackgroundBorderless for a ripple that extends beyond the view. It will be drawn upon, and bounded by, the nearest parent of the view with a non-null background.
3) The course of action
Using Layout Inspector, I realized that #android:color/transparent although transparent (duh!) it actually assigns 0 as the value of the bg attribute of a View, but zero is not null hence the ripple gets bounded at the nearest parent.
4) The conclusion
With that in hand, I went and set the android:background property of my TabLayout to #null rather than transparent, and now I have a fancy little ripple spread onto the area of the AppBarLayout.
5) Outro: **ANDROID & SO FTW!
Props to everyone in this post who shed light on the matter in word. Cheers!

After wrapping ImageButton inside FrameLayout, I was getting rectangular shape on touch. Applied background with oval shape on FrameLayout and got the circular shape on touch.

Had the same issue. Used the solutions described above and worked. Managed to avoid the wrapping FrameLayout by setting foreground as ?attr/actionBarItemBackground and background as #null.
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center|end"
android:background="#null"
android:contentDescription="#string/app_name"
android:foreground="?attr/actionBarItemBackground"
android:padding="#dimen/small_margin"
android:src="#drawable/ic_clear_text_icon" />

ImageView centered image with mach_parent height

I need to create ImageView for portrait mode like on this image:
But whatever I do I got same results like:
EDITED
XML example from third image
<ImageView
android:id="#+id/image"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:adjustViewBounds="true"
android:layout_gravity="start"
android:src="#drawable/background" />

There are few possibilities that may cause this problem. You either have a Margin set for your image (margin top and bottom). Or the parent layout has a padding (also top and bottom).
You only need to remove this padding or margin in order for the view to fill the parent layout.
There's also another possibility, which -by looking at your code- might be the issue. you might want to use android:background attribute instead of android:src

Overlap views in android?

I have a linearlayout which have a textbox(multiline, nearly 5 lines) and image view. Is it possible to draw a image on textview(overlapping)?
Note: I have to specify the coordinates of the image, which are not static, and may be anywhere above text.
Something like this mockup:

I think it can be achieved using RelativeLayout.
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<TextView
android:id="#+id/Textview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dp"
android:text="#string/Text2display"
android:textColor="#EEDCAA" />
<ImageView
android:id="#+id/choose_img"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_marginTop="-46dp"
android:adjustViewBounds="true"
android:contentDescription="#string/description_logo"
android:src="#drawable/user2" />
</RelativeLayout>
By placing the TextView block above the ImageView, it ensures that the image view overlaps the TextView. Now, based on your requirements and position, use the following commands from the link :-
http://developer.android.com/reference/android/widget/RelativeLayout.LayoutParams.html
You can align left right, top and bottom. Use negative values to navigate the ImageView, if ur using align bottom and stuff.. This will make it to overlap. Please let me know if this was helpful
Is there any specific reason for Linear Layout?

You can do this easily using RelativeLayout . You can have an ImageView overlapping TextView Unless there is a specific reason for using LinearLayout .

If you really (really) need to use LinearLayout, you can subclass TextView and override onDraw to draw your image.

In all your xml files, should define the background color for it, it will solve the problem :
Add this android:background="#android:color/black" in to the View tag you defined.