Java tutorial
//package com.java2s; import android.annotation.TargetApi; import android.app.Activity; import android.os.Build; import android.support.v4.app.FragmentActivity; public class Main { private static final String DIALOG_TAG = "applover_dialog"; @TargetApi(Build.VERSION_CODES.HONEYCOMB) public static boolean isDialogShown(Activity activity) { if (activity instanceof FragmentActivity) { return ((FragmentActivity) activity).getSupportFragmentManager().findFragmentByTag(DIALOG_TAG) != null; } else { return activity.getFragmentManager().findFragmentByTag(DIALOG_TAG) != null; } } }