Develop Reference

Draw colored circle around PNG

I am using this PNG in my project (within my resources):
Programmically, I want to achieve this:
Change color to white.
Add a solid-colored circle around the icon.
The result should look to something like this:
The red color has to be changeable dynamically at runtime. How do I achieve this?

Add this to your XML file:
<ImageView
android:id="#+id/image_view"
android:layout_width="56dp"
android:layout_height="56dp"
android:background="#drawable/circle"
android:padding="8dp"
android:src="#drawable/bull_image"
app:tint="#android:color/white" />
This is circle.xml:
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval">
<solid
android:color="#android:color/white"/>
</shape>
And to change the background color dynamically:
imageView.backgroundTintList = ColorStateList.valueOf(ContextCompat.getColor(this, R.color.your_color))

Something like this shoud do the trick (adjust the cardCornerRadius to your liking):
<androidx.cardview.widget.CardView
android:layout_height="wrap_content"
app:cardBackgroundColor="#color/red"
app:cardCornerRadius="10dp"
android:layout_width="wrap_content"
app:cardElevation="0dp">
<ImageView
android:src="your_image"
android:tint="#color/white" />
</androidx.cardview.widget.CardView>

Define a drawable that you can use as your background, for example:
<!-- res/drawable/the_drawable_above.xml -->
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval" android:padding="10dp">
<stroke android:width="1dp"
android:color="#color/colorLightGrey"/>
<solid
android:color="#color/colorAccent"/>
</shape>
For your image view:
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:srcCompat="#drawable/your_image"
scale_type="fit_center"
android:tint="#android:color/white"
android:background="#drawable/the_drawable_above"/>

gradient alternative to color the button

I have a shape in android button, i wanted it colored two colors. but not gradient. just the colors as is , how can it be done? below is my drawable. I dont want it gradient, just two colors as is.
<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle" >
<gradient
android:angle="0"
android:endColor="#e574bd"
android:startColor="#874dbc"
android:type="linear" />
<corners
android:radius="20dp"/>
</shape>
Edit: I attached image how I want it to look like
<RelativeLayout
android:id="#+id/registration"
android:layout_width="match_parent"
android:layout_height="#dimen/buttonHeight"
android:paddingEnd="#dimen/default_margin"
android:paddingStart="#dimen/default_margin"
android:background="#drawable/abovexml"
android:gravity="center_horizontal">
<ImageView
android:layout_width="match_parent"
android:id="#+id/sadad2"
android:src="#+id/theimagewithoutwordingchangepassword"
android:scaleType="fitXY"
android:layout_height="#dimen/buttonHeight"/>
<TextView
android:id="#+id/loginText"
android:layout_width="match_parent"
android:layout_height="#dimen/buttonHeight"
android:layout_centerInParent="true"
android:gravity="center"
android:text="#string/changepass"
android:textColor="#android:color/white"
android:textSize="#dimen/buttonSize"></TextView>
</RelativeLayout>

Add gradient to imageview

I want to add a gradient on the bottom of my image . Something like this :
I tried something like this but I only get the gradient no image..
<ImageView
android:id="#+id/trendingImageView"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#drawable/trend_donald_sterling"
android:src="#drawable/trending_gradient_shape"
/>
trending_gradient_shape:
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<gradient
android:angle="90"
android:endColor="#android:color/darker_gray"
android:startColor="#android:color/darker_gray" />
<corners android:radius="0dp" />
</shape>

You need two layers: An ImageView, and a View on top of that with your gradient as android:background. Put these two Views in a FrameLayout:
<FrameLayout
... >
<ImageView
...
android:src="#drawable/trend_donald_sterling" />
<View
...
android:background="#drawable/trending_gradient_shape"/>
</FrameLayout>

Simply set the alpha value in your gardient.xml:
Your imageView:
android:background="#drawable/trend_donald_sterling"
android:src="#drawable/trending_gradient_shape"
Your gradient xml file:
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<gradient
android:angle="90"
android:endColor="#00ffffff"
android:startColor="#aa000000"
android:centerColor="#00ffffff" />
<corners android:radius="0dp" />
</shape>
In the color value, the first two places after # correspond to the alpha value, while the rest are the actual color value in R G B format, two for each.

try using the "foreground" attribute in your imageview
<ImageView
...
android:src="#drawable/trend_donald_sterling"
android:foreground="#drawable/trending_gradient_shape" />
it worked for me.

Use android:foreground="..." instead of android:background="..."
Now you won't need to put ImageView and View inside a FrameLayout!
So your final code will be:
ImageView
<ImageView
...
android:foreground="#drawable/trend_donald_sterling"/>
Drawable
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<gradient
android:angle="90"
android:endColor="#00ffffff"
android:startColor="#aa000000"
android:centerColor="#00ffffff" />
<corners android:radius="0dp" />
</shape>

this is how im gonna do,
i used relative layout as my parent layout, use the following code
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:src="#drawable/img_sample"/>
<View
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/gradiant"/>
<LinearLayout
android:layout_marginLeft="10dp"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="1">
<View
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.55"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_weight="0.25"
android:text="Events"
android:gravity="bottom"
android:textStyle="bold"
android:textSize="18sp"
android:textColor="#ffffff"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_weight="0.25"
android:text="Some description about the events goes here"
android:textSize="14sp"
android:textColor="#ffffff"/>
</LinearLayout>
</RelativeLayout>
hope you can figure out, here i attach my gradiant code below.use it inside the drawable folder....
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<gradient
android:angle="90"
android:endColor="#00ffffff"
android:startColor="#aa000000"
android:centerColor="#00ffffff" />
<corners android:radius="0dp" />
</shape>

This is an easy way that creates a similar effect yet doesn't actually have the image disappear. Sometimes using the foreground attribute is not the best for the gradient, especially if using a motionlayout or you have nested scrollviews. Create an entirely new imageview and set the background to the gradient.
XML With Both Imageviews
<ImageView
android:id="#+id/main_imageView"
android:layout_width="0dp"
android:layout_height="0dp"
android:scaleType="centerCrop"
android:src="#drawable/peakpx__1_"
ads:layout_constraintHeight_percent=".55"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageView
android:id="#+id/main_imageView_gradient"
android:layout_width="0dp"
android:layout_height="0dp"
ads:layout_constraintHeight_percent=".55"
android:background="#drawable/gradient_theme_background"
app:layout_constraintEnd_toEndOf="#id/main_imageView"
app:layout_constraintBottom_toBottomOf="#id/main_imageView"
app:layout_constraintStart_toStartOf="#id/main_imageView" />
Then for the gradient, I use black #000000 for darker themes, and white #ffffff for lighter ones. A lot of answers I see on this are not adding the center color. This is important if you want to have the gradient start closer to the edge of the image.
gradient_background
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<gradient
android:angle="270"
android:type="linear"
android:endColor="#ff000000"
android:centerColor="#00000000"
android:startColor="#00000000"/>
</shape>

**1> Create file black_shadow.xml**
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape>
<gradient
android:angle="270"
android:startColor="#00000000"
android:centerColor="#9c000000"
android:endColor="#000000"
android:type="linear" />
</shape>
</item>bla
</selector>
**2> Just add below line in Imageview.**
android:foreground="#drawable/black_shadow"

How can I show a label with text in the middle?

I am trying to get a TextView with white background and rounded corners and text in the middle.
Something that looks like this:
So far I have this but it is not giving me the above effect.
<TextView
android:textColor="#000000"
android:background="#FFFFFF"
android:text="0" />

First of all, I would create a custom drawable resource for easy implementation of rounded corners.
(place this in res/drawable)
my_bg.xml:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<solid
android:color="ffffff" />
<corners
android:radius="15dp"/>
<stroke
android:width="1dp"
android:color="#android:color/black" />
</shape>
More info on xml drawable resources can be found right here if you want to get into more advanced drawables (gradients, layer-list, animation, etc...)
Then change your TextView in xml layout file to match this:
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="8dp"
android:textColor="#000000"
<!--refer to your custom drawable from earlier-->
android:background="#drawable/my_bg"
<!--center text within TextView-->
android:gravity="center"
android:text="0" />
I hope this helps, Happy Coding!

Set the gravity
android:gravity="center"
http://developer.android.com/reference/android/widget/TextView.html#attr_android:gravity
You are missing the width and height attribute for TextView.
For the rounded corners use a Shape Drawable
http://developer.android.com/guide/topics/resources/drawable-resource.html#Shape
Under res/drawable
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle"
>
<solid android:color="#FFFFFF"/>
<corners android:radius="7dp" />
<stroke android:width="5px" />
</shape>
Then
<TextView
android:layout_width="100dp"
android:layout_height="50dp"
android:background="#drawable/background"
android:gravity="center"
android:text="0"
android:textColor="#000000" />
Snap

How to make rectangular and round corner panel like facebook

I am very new in android and want to make a rectangular and round corner pan/view in with a grey background without using facebook SDK. such pan is also used in many other mobile apps like linkedin.
Not able to post snapshot due to no reputation :(
thanks in advance.
Ajay

create shape.xml in drawable folder
like
shape.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >
<stroke android:width="2dp"
android:color="#FFFFFF"/>
<gradient
android:angle="225"
android:startColor="#DD2ECCFA"
android:endColor="#DD000000"/>
<corners
android:bottomLeftRadius="7dp"
android:bottomRightRadius="7dp"
android:topLeftRadius="7dp"
android:topRightRadius="7dp" />
</shape>
and in myactivity.xml
you can use:
<Button
android:id="#+id/btn_Shap"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/Shape"
android:background="#drawable/shape"/>

We can do that using background image
Code example :
<FrameLayout
android:id="#+id/layout_container"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginBottom="#dimen/d10"
android:layout_marginLeft="#dimen/d20"
android:layout_marginRight="#dimen/d20"
android:layout_marginTop="#dimen/d10"
android:background="#drawable/background_withoutgrid" >
<RelativeLayout
android:id="#+id/canvas_container"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#null" >
<ImageView
android:id="#+id/canvosImageView"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>
</FrameLayout>
It viewed as below