java - Android - combine multiple images into one ImageView

Question

I'm looking for help developing (or a library) which can allow me to merge together multiple images into one imageview.

My application is grouping together interactions between users, instead of displaying them singularly, and therefore I would like to merge all of their avatars, so that one adapter cell visualizes a "group".

A fantastic example of this is done on facebook.com's chat as such:

My question is, how can I provide this functionality in Android / Java? Presumably, it could a number of images between 1 and 4. Please let me know of any advice you can give :)

Answer 1

You can use MultiImageView.

Add dependency in app.gradle:

compile 'com.github.stfalcon:multiimageview:0.1'

Add MultiImageView to layout xml file

<com.stfalcon.multiimageview.MultiImageView
    android:id="@+id/iv"
    android:layout_width="100dp"
    android:layout_height="100dp"/>

In java class find view by id:

final MultiImageView multiImageView = (MultiImageView) findViewById(R.id.iv);

For adding image to MultiImageView use method addImage(Bitmap bitmap). For exapple:

multiImageView.addImage(BitmapFactory.decodeResource(getResources(), R.drawable.avatar1));

For setting shape of MultiImageView use method setShape(MultiImageView.Shape shape).

multiImageView.setShape(MultiImageView.Shape.RECTANGLE);//Rectangle with round corners
multiImageView.setShape(MultiImageView.Shape.CIRCLE);//Circle
multiImageView.setShape(MultiImageView.Shape.NONE);//Without shape

Check github link for more information:

I think it is what you needed