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1. User Login --- [CREDENTIALS] --> HomeActivity
2. HomeActivity:OnCreate{
    new DataHandler() ----> DataHandler
}
    3. DataHandler:Constructor() {

        Async Calls: InitWeather() --[ OnPostExecute ]--> InitChatIDs() --[ OnPostExecute ]-->  InitConnections() --[ OnPostExecute ]--> MainActivity:loadHomeFragment();

    }
4. MainActivity:loadHomeFragment() -> HomeFragment displays, app waits

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------------------------------------------------    <<User Switches To Chat Fragment>> ->   --------------------------------------------------------------------------------------------------------
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1.  MainActivity:onNavigationItemSelected(){ //InnerClass at top of HomeActivity

        DataHandler mData.getChats(true) -> // call to mData method to update whatever you need (update messges, etc). Sometimes this requires a true boolean to trigger fragment switching.
    }

2. DataHandler:getChats(true/false) {
    URI uri = new Uri....
    if(true){
        AsyncTask
        onPostExecute(updateChatsTransition) //update chats and transition to new fragment
    } else {
        AsyncTask
        onPostExecute(updateChats) //just update values in data structures, don't switch fragments.
    }
}

3. updateChats(){

    JsonResults -> ChatObject -> HomeActivity:mJsonData //jsondata is updated with new chats if any
                                                        //(or message data, depending on what is being done)

    if (transition){
        HomeActivity:navigateChats()
    }
}

4. HomeActivity:navigateChats(){

    Chats[] = DataHandler.getChatArray(mJsonData.get(chats)); // method in data handler that converts json data to Chats[]

    Frag frag = new Frag;
    frag.setArguments(chats)
    loadfragment(frag);
}

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------------------------------------------------    <<FRAGMENT WANTS TO ADJUST DATA>>   --------------------------------------------------------------------------------------------------------
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1. Fragment -> calls HomeActivity:<THE PROPER ASSOCIATED LISTENER>

2. HomeActivity:<THE PROPER ASSOCIATED LISTENER> {

    DataHandler.update/get<WHATEVER SHOULD BE UPDATED>(True/False [for fragment swapping] )

}
3. DataHandler:Update<Whatever>(True/False){
    URI uri ...
    AsyncCall -> MainActivity:<Method in main activity that updates data>
}