allprojects {
	repositories {
		...
		maven { url "https://jitpack.io" }
	}
}

dependencies {
       compile 'com.github.chathuralakmal:AndroidImagePopup:1.0.4'
}

ImagePopup imagePopup = new ImagePopup(this); 

 /** Set popup height, width & background color as you need or just leave default settings **/

   final ImagePopup imagePopup = new ImagePopup(this);
    imagePopup.setBackgroundColor(Color.BLACK);
    imagePopup.setWindowWidth(800);
    imagePopup.setWindowHeight(800);
    imagePopup.setHideCloseIcon(true);
    imagePopup.setImageOnClickClose(true);

    final ImageView imageView = (ImageView) findViewById(R.id.imageView);
    imageView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            /** Initiate Popup view **/
            imagePopup.initiatePopup(imageView.getDrawable());
        }
    });