// Add it in your root build.gradle at the end of repositories:
allprojects {
  repositories {
   ...
   maven { url 'https://jitpack.io' }
  }
 }

// Add AnimatedLoadingIndicator dependency
dependencies {
         implementation 'com.github.yash786agg:AnimatedLoadingIndicator:v1.3'
 }

val progressDialog = Dialog(this)
progressDialog.requestWindowFeature(Window.FEATURE_NO_TITLE)
progressDialog.setContentView(R.layout.custom_dialog_progress)

/* Custom setting to change TextView text,Color and Text Size according to your Preference*/

val progressTv = progressDialog.findViewById(R.id.progress_tv) as TextView
progressTv.text = resources.getString(R.string.loading) 
progressTv.setTextColor(ContextCompat.getColor(this, R.color.colorAccent))
progressTv.textSize = 19F

progressDialog.window!!.setBackgroundDrawable(ColorDrawable(Color.TRANSPARENT))
progressDialog.setCancelable(false)
progressDialog.show()

progressDialog.dismiss()
   or
progressDialog.cancel()

Dialog progressDialog = new Dialog(this);
progressDialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
progressDialog.setContentView(R.layout.custom_dialog_progress);

/* Custom setting to change TextView text,Color and Text Size according to your Preference*/

TextView progressTv = progressDialog.findViewById(R.id.progress_tv);
progressTv.setText(getResources().getString(R.string.loading));
progressTv.setTextColor(ContextCompat.getColor(this, R.color.colorAccent));
progressTv.setTextSize(19F);
if(progressDialog.getWindow() != null)
    progressDialog.getWindow().setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT));        

progressDialog.setCancelable(false);
progressDialog.show();

progressDialog.dismiss();
   or
progressDialog.cancel();