Develop Reference

Make a Button's background transparent

I am very new to Android Studio and creating apps in general.
I have created an Image Button and uploaded an Image, problem is that I want to make the background of the Button transparent.
This is what I mean:See Example
The background of the left button is black and I want to make it transparent, like the Right Button.

Just put this property inside ImageButton tag:
android:background="#android:color/transparent"
----------OR--------------
You can also user vector image for this:
Click on Vector Asset
Click on small icon image(just below ic_android_black_24dp)
Search any icon and add to your drawable. The icon you are using is appeared in search result. use this list icon.

Try This
<ImageButton
android:layout_width="wrap_content"
android:background="#android:color/transparent"
android:src="#drawable/image"
android:layout_height="wrap_content" />

ImageButton Border Transparancy - Removing the square border around round image is not working?

Hello Guys I need some help in creating Imagebutton. I created custom button on PS and then saved it in PNG format with transparent background. After that i patched my image with 9patch. Now i am using that image as a button in my layout but the image is showing colored background corners. I tried alot of things but its not removing.
Here is my XML
<ImageButton
android:id="#+id/mybutton"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#android:color/transparent"
android:src="#drawable/registerbutton"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_marginBottom="123dp" />

Keep the background attribute as #null like this :
android:background="#null"
If still you are getting that corner, it might be from the png file that you are using.
This is an example of what i get from #null

Probably the ouput of "9patching" operation added corners. Open the file and check if there are corners or not.
If that won' help, try switching android:src attribute with android:background attribute.

And u can make .png button online using this site

Android Button changing color and incrementing size

Hi guys im new in android stuff and i have a problem with a button when color change, because when it changes the button grows a bit and i dont know why. My code of the button click is below.
produzirbt.setBackgroundColor(Color.rgb(38, 198, 219));
Toast.makeText(getApplicationContext(), "Avaria iniciada.", Toast.LENGTH_SHORT).show();
Xml
<Button
android:layout_width="150dp"
android:layout_height="100dp"
android:text="Pausa"
android:id="#+id/Pausa"
android:textSize="50px"
style="#style/Widget.AppCompat.Button.Colored"
android:layout_above="#+id/Avaria"
android:layout_toRightOf="#+id/terminaliniciado"
android:layout_toEndOf="#+id/terminaliniciado" />

In order to keep button size use setColorFilter() method.
In your case:
produzirbt.getBackground().setColorFilter(ContextCompat.getColor(this, R.color.your_color), PorterDuff.Mode.SRC_ATOP);

Your button by default has a backgrond definded by some xml file. It contains backround color, corner radiuses and padding. Then in java code you change this style to plain color and padding becomes zero. To prevent size changing you should define base background with a color. Like this:
<Button
android:layout_width="150dp"
android:layout_height="100dp"
android:text="Pausa"
android:id="#+id/Pausa"
android:textSize="32sp"
android:background="#color/my_button_color"
android:layout_above="#+id/Avaria"
android:layout_toRightOf="#+id/terminaliniciado"
android:layout_toEndOf="#+id/terminaliniciado" />
A the same time using color for button is a hacky method. It'll be better to define normal style as the documentation says.

Background of my custom button isn't transparent

I created a custom button and I saved it as a .png with a transparant background.
this is the code in xml
<Button
android:id="#+id/btnReport"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:drawableTop="#drawable/report" />
and when i run it in the emulator I get my button with a grey background
(I cannot post images yet, because my reputation is too low. Apologies for this)
How do I make the background transparant?
Thanks.
Vincent

You should be doing
android:background="#drawable/report"

is that image "report" only transparent? You don´t need to set a transparent image, just set
android:background="#android:color/transparent"
to your button.

Change ToggleButton background to Clear/Dark Gray

I'm using two toggle buttons on my application, when I run it on the emulator the button has black text, and a light gray background. As we can see in the next image:
When I run it on my real device the button has another style, it has white text, and a black background. As shown in the next image.
My QUESTION IS: How to change the style of a ToggleButton to it always stay with a clear gray background, as in the first image? Is it defined by a Theme?
The xml code used for the button was:
<ToggleButton
android:id="#+id/toggleButtonSimulado"
android:layout_gravity="center|top"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textOn="On"
android:textOff="Off" />

Style of the button or any other view changes in the real device according to the current theme selected on that device. To prevent this you need to specify background color and text color explicitly. Use a gradient as the background of the button. For example:
<ToggleButton
android:id="#+id/toggleButtonSimulado"
android:layout_gravity="center"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/gray_gradient"
android:textOn="On"
android:textOff="Off"
android:textColor="#android:color/black" />

You can use your own backgrounds for the buttons.
Search btn_toggle_off.9.png/btn_toggle_on.9 on your sdk install dir(android-sdk-mac_86/platforms/android-9/data/res/drawable-hdpi).
And make sure to copy the selector located on drawable folder
Or you can try:
androiddrawables
androiddrawablesexplorer
Hope this help.