Develop Reference

LinearLayout with rounded corners and background color

CompileSdkVersion 26, if it's important. I want to create LinearLayout with rounded corners, and background color.
I created 2 LinearLayouts, one with corners, and one with color, but their shapes do not match my expectations.
Code from activity
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#color/whitegrey"
android:layout_marginTop="340dp"
android:id="#+id/layout"
android:layout_marginStart="10dp">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/custom_border"
android:orientation="vertical"
android:padding="6dp"
android:textColor="#color/black">
...
</LinearLayout>
</LinearLayout>
custom_border.xml:
<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
<corners android:radius="20dp"/>
<padding android:left="8dp" android:right="8dp" android:top="8dp" android:bottom="8dp"/>
<stroke android:width="2dp" android:color="#444444" />
</shape>
Actually, there is rounded border, and behind, there is rectangular layout with target color. I want to fill with target color only what is inside borders.
Is there any way to set the fill color, preferably in custom_border.xml?
Here, what I have at the moment:
Here, what I want to achieve:
View from phone, the letters on the left are cut off:

From the code samples you provide us, it doesn't seem necessary to me to have two LinearLayout. Only the layout with android:background="#drawable/custom_border" is required.
To achieve the expected result, just add the property <solid android:color="#color/whitegrey" /> to your custom_border.xml :
<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
<corners android:radius="20dp"/>
<padding android:left="8dp" android:right="8dp" android:top="8dp" android:bottom="8dp"/>
<stroke android:width="2dp" android:color="#444444" />
<solid android:color="#color/whitegrey" />
</shape>
I wish I was able to help you!

How to change background color/shape of a Radiobutton when selected/deselected

I am adding radiobuttons programatically to a RadioGroup in a for loop. I want my buttons to have a certain background color when not checked, and another when they are checked (only one can be selected at once). My problem is that I also want this background to be a rounded rectangle. I have it working partially, but whenever I select an answer, it will set that button's background to white, but it won't reset any of the other buttons.
I understand that I need some type of selector object, to add the toggle behavior that is expected from the radiogroup. I was able to find some examples of that, but they only showed how to set a solid color as a background. I need to use this rounded corner shape. So, my trouble is figuring out how to blend the two. I could be going about this completely wrong. If there is a better approach to achieving what I want, I would prefer to use that rather than salvage what I've already tried.
I was able to get close by creating two XML files, each with a shape object and its own background color. If a radiobutton is selected, its style gets set to the radio_button_checked" style. But, I know I am approaching this wrong because the other checked button does not toggle off. I can basically click all of the buttons and get them all to have white backgrounds. I know there is a better way to do this, I just don't know what it is
Here is the loop where I add the buttons, along with the change listener for radiogroup rg (rg is my RadioGroup and answers is just a HashMap of strings. They don't affect anything related to this problem. The buttonTintList line is just there to change circle color)
for(int i = 0; i < answers.size(); i++)
{
RadioButton rb = new RadioButton(context);
rb.setTextColor(ContextCompat.getColor(context, R.color.colorPrimaryDark));
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
rb.setButtonTintList(ColorStateList.valueOf(ContextCompat.getColor( context, R.color.colorAccent)));
}
rb.setBackground(context.getResources().getDrawable(R.drawable.radiobutton_style_unchecked));
rb.setText(answers.get(i));
rb.setWidth(800);
rb.setHeight(150);
rb.setTextSize(18);
rb.setLayoutParams(params);
rg.addView(rb);
}
/* Store the answer */
rg.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
RadioButton rb= (RadioButton)group.findViewById(checkedId);
answer = rb.getText().toString();
rb.setBackground(context.getResources().getDrawable(R.drawable.radiobutton_style_checked));
}
});
Here is the XML for unchecked buttons (radiobutton_style_unchecked.xml)
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<corners android:radius="6dp" />
<gradient
android:angle="45"
android:centerColor="#color/colorPrimaryLight"
android:centerX="35%"
android:endColor="#color/colorPrimaryLight"
android:startColor="#color/colorPrimaryLight"
android:type="linear" />
<padding
android:bottom="5dp"
android:left="0dp"
android:right="0dp"
android:top="5dp" />
</shape>
The style for checked buttons is exactly the same, but with white instead of colorPrimaryLight
Here is what it looks like with nothing selected:
Here is what it looks like when one item is selected.
And this is what happens when I select more than one

Try this
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/holo_blue_light"
android:orientation="vertical">
<RadioGroup
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<RadioButton
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:background="#drawable/radio_background"
android:padding="10dp"
android:text="Yes" />
<RadioButton
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:background="#drawable/radio_background"
android:padding="10dp"
android:text="No" />
</RadioGroup>
</LinearLayout>
#drawable/radio_background
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="#android:color/white" android:state_checked="true" />
<item android:drawable="#color/colorAccent" android:state_checked="false" />
</selector>
OUTPUT
UPDATE
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/holo_blue_light"
android:orientation="vertical">
<RadioGroup
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<RadioButton
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:background="#drawable/test"
android:padding="10dp"
android:text="Yes" />
<RadioButton
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:background="#drawable/test"
android:padding="10dp"
android:text="No" />
</RadioGroup>
</LinearLayout>
#drawable/test
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" android:exitFadeDuration="#android:integer/config_shortAnimTime">
<item android:drawable="#drawable/radio_selected" android:state_checked="true" />
<item android:drawable="#drawable/radio_normal" />
</selector>
#drawable/radio_selected
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<corners android:radius="20dp" />
<solid android:color="#android:color/white" />
<padding
android:bottom="5dp"
android:left="0dp"
android:right="0dp"
android:top="5dp" />
</shape>
#drawable/radio_normal
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<corners android:radius="20dp" />
<solid android:color="#color/colorAccent" />
<padding
android:bottom="5dp"
android:left="0dp"
android:right="0dp"
android:top="5dp" />
</shape>
OUTPUT

I suggest you have 3 drawable xml
radio_checked.xml(the effect you want to be checked)
radio_unchecked.xml (the effect you want to be unchecked)
radio_custom_drawable.xml
In this xml you have to do something like this:
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_checked="true"
android:drawable="#drawable/radio_checked" />
<item android:state_checked="false"
android:drawable="#drawable/radio_unchecked" />
</selector>
And then in your code change this
rb.setBackground(context.getResources().getDrawable(R.drawable.radiobutton_style_checked));
to
rb.setBackground(context.getResources().getDrawable(R.drawable.radio_custom_drawable));

What's making the button background white, shouldn't it be transparent?

As you can see here, the background to the button is transparent. I can't seem to find where it's set to white in either xml files. The button is identified as btnCapture the code is below.
activity_main.xml
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<TextureView
android:id="#+id/textureView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/btnCapture" />
<Button
android:text="#string/capture"
android:id="#+id/btnCapture"
android:layout_width="wrap_content"
android:layout_height="92dp"
android:background="#drawable/rounded_button"
android:layout_alignParentBottom="true"
android:layout_centerInParent="true"
tools:layout_editor_absoluteX="157dp"
tools:layout_editor_absoluteY="202dp" />
</RelativeLayout>
rounded_button.xml
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval">
<stroke android:color="#80000000"
android:width="2dp"></stroke>
<stroke android:color="#D3D3D3"></stroke>
<size android:width="60dp"
android:height="80dp"></size>
</shape>

You do not change anything related to the UI of the button in your Java code, so no, it's not because of the Java code. It's XML related.
Your background of the button is a drawable named 'rounded_button', but you haven't posted the contents of that drawable file. So all we can do is guess that the rounded_button drawable is white?

There are two quick steps you can take to make this work the exact way you desire:
First, change your view from a Button to a TextView and apply your rounded-button.xml background. This should work instantly. It's a bit tricky trying to set a background to a button as seen here.
Secondly, I noticed that your rounded-button.xml file has no solid element. The solid element allows you to set the background of a layout. For this reason, I changed one of your stroke elements to a solid element (there shouldn't be two stroke elements anyway). Your updated rounded_button.xml code is as shown below:
PS: Don't forget to change the view in your activity_main.xml from Button to TextView!
<shape
xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval">
<stroke android:color="#80000000"
android:width="2dp">
</stroke>
<solid
android:color="#D3D3D3">
</solid>
<size
android:width="60dp"
android:height="80dp">
</size>
</shape>
I hope this helps. Merry coding!

Bottom transparent shadow effect for ImageView

I want to add shadow effect to my ImageView, like a transparent from bottom side. Here two images with and without shadow effect. Has any possible ways to make like this? Or is it better to take shadow svg file from the internet and put on the original imageView?

You can put your image in the same space with a gradient image using a RelativeLayot like this:
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="#drawable/your_image"/>
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="#drawable/grad"/>
</RelativeLayout>
The "grad" image is this:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<gradient
android:angle="270"
android:endColor="#181818"
android:startColor="#00000000 " />
<corners android:radius="5dp" />
</shape>

White Border along with transparency in "LinearLayout"

I wanted to add a linear layout, having a transparent background as well as with white borders. The problem is: as far as I have googled, I can achieve only one out of both.
Here's what I did:
Saved the following as border.xml in drawable
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape android:shape="rectangle">
<solid android:color="#FFFFFF" />
</shape>
</item>
<item android:left="5dp" android:right="5dp" android:top="5dp" android:bottom="5dp" >
<shape android:shape="rectangle">
</shape>
</item>
</layer-list>
my existing page layout
<LinearLayout
android:id="#+id/quiz"
android:layout_width="150dp"
android:layout_height="120dp"
android:background="#66041414" <-------- replaced it with android:background="#drawable/border"
android:orientation="vertical"
android:layout_marginLeft="5dp" >
......
</LinearLayout>
I am getting opaque background, when the border was included.
I wanted a final result to be like:
totally stuck with it. Just wanted to find a way out to achieve it. Any suggestions would be quite helpful.

Your drawable for background of layout:
You can change radius for corner shape if you want. But stroke will create a border and solid part is the background which we are making transparent.
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<corners
android:radius="2dp"
android:topRightRadius="0dp"
android:bottomRightRadius="0dp"
android:bottomLeftRadius="0dp" />
<stroke
android:width="1dp"
android:color="#android:color/white" />
<solid android:color="#android:color/transparent"/>
</shape>
and my test layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/ll1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<LinearLayout
android:id="#+id/ll2"
android:layout_height="50dp"
android:layout_width="50dp"
android:background="#drawable/my_transparent_linear_layout"></LinearLayout>
</LinearLayout>
It works, Below is the proof:

For this you can use two layout aligned one top of the other then set the background transparent for the top view and set the white border as background for the bottom view. You can do this thing inside relative layouts.

Xml Drawable for background:
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<corners android:radius="30dp" />
<stroke android:width="5dp" android:color="#ffffffff"/>
<solid android:color="#66000000"/>
</shape>
Adjust radius, width and dark color transparency ( #ff and #66 parts) as you please.

Indeed well suggestion by #Ali Imran, check below way, hope it will help.
back.xml
<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
<stroke android:width="1dp" android:color="#dd7b7a"/>
<corners android:bottomRightRadius="10dp" android:bottomLeftRadius="10dp"
android:topLeftRadius="10dp" android:topRightRadius="10dp"/>
<solid android:color="#dd7b7a"/>
</shape>
main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center"
>
<LinearLayout
android:padding="4dip"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/back"
android:gravity="center_horizontal"
>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/tile_mode" // your transparent image
/>
</LinearLayout>
</LinearLayout>
also go through below links in that, way of using xml will works for you.
Bitmap image with rounded corners with stroke