Index Android

I am creating an android app for a restaurant that lets the waiters take the customers orders. I am… Read more Npe While Using Hashmap To Populate Listview

i have this hashmap with string and arraylis: Map > devNameType = new HashMap >(); public voi… Read more How To Get Hashmap Values Depends On Key

I just want to know how to, if a Hashmap is already on the list add 1 to quantity, if it is not the… Read more Updating List

I get the following error when trying to pass a HashMap to my MainActivity class (TabooCards implem… Read more Unable To Marshal Value On Serializable Data

I've been developing an Android guitar app, and currently I'm having some problems with Has… Read more Null Pointer Exception When Retrieving From Hashmap Even Though Containskey() Returns True

I have an arraylist with the name of who pay something, and another arraylist with the cost of each… Read more Remove Duplicates Items From Arraylist And Hashmap

I'm programming a android app in Kotlin and having troubles with document add to Cloud Firestor… Read more Hashmap Object Saved In Cloud Firestore With Field Names As Letters Insted Of Informed Names

Hello Everyone I am newbie in Android, I need to parse json object and display it in listView and a… Read more Save Data To Sqlite From Json Object Using Hashmap In Android