How to apply shadow to ImageView?

Question

I want to apply shadow to the ImageView. When I'm applying shadow to a TextView I'm getting it but same it's not getting to ImageView. How can I solve this problem?

Answer 1

We can also use CardView which provides a rounded corner background and shadow. To use that you need to add the v7 CardView library as a dependency to the project in the build.gradle like below.

dependencies {     compile 'com.android.support:cardview-v7:23.0.1'     ------- } 

Note: Change 23.0.1 in the above line with the respected version.

So I surrounded the ImageView with CardView to make shadow like below.

<android.support.v7.widget.CardView     android:layout_width="match_parent"     android:layout_height="wrap_content"     card_view:cardBackgroundColor="@android:color/white">      <ImageView         android:id="@+id/dish_image"         android:layout_width="match_parent"         android:layout_height="120dp"         android:adjustViewBounds="true" />  </android.support.v7.widget.CardView> 

It'll add a shadow around the image.

Note: I don't know whether it is a good workaround. I am a beginner. I tried to implement the CardView which gives an idea to implement the same for this. If it is not good please update me with the reason.

Answer 2

This is taken from Romain Guy's presentation at Devoxx, pdf found here.

Paint mShadow = new Paint();  // radius=10, y-offset=2, color=black  mShadow.setShadowLayer(10.0f, 0.0f, 2.0f, 0xFF000000);  // in onDraw(Canvas)  canvas.drawBitmap(bitmap, 0.0f, 0.0f, mShadow); 

Hope this helps.

NOTES

Don't forget for Honeycomb and above you need to invoke setLayerType(LAYER_TYPE_SOFTWARE, mShadow), otherwise you will not see your shadow! (@Dmitriy_Boichenko)

SetShadowLayer does not work with hardware acceleration unfortunately so it greatly reduces performances (@Matt Wear)

Answer Taken from Here

For Api greater than 21. You can try in xml in imageview or Button : Read here at developer site

android:elevation="5dp"