android - Pass data to Fragment from Layout before it's rendered -

i need pass data fragment, declared in activity layout before rendered:

<fragment android:name="com.app.fragments.myfragment"         android:layout_width="match_parent"         android:layout_height="match_parent"         android:id="@+id/myfragment" /> 

i tried in activity's oncreate fragment rendered @ time.

@override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);     // here fragment rendered     mposts = (myfragment)getsupportfragmentmanager().findfragmentbyid(r.id.myfragment);     mposts.setdata(somedata); } 

i've seen way when fragment created programmatically in activity oncreate , added container. it's not bad solution. but... there simpler?

for xml layout there 1 question on here: https://stackoverflow.com/a/23226281/842607

even has cannot pass arguments, can use callbacks or custom attributes.

else

normally, use bundle in arguments in way:

fragment class

public class shopproductlistingfragment extends fragment {      private static final string tag = shopproductlistingfragment.class.getsimplename();      public static final string key_category = "category";     public static final string key_url_params = "url_params";     public static final string key_url = "url";      public static shopproductlistingfragment getinstance(newcategory category, @nonnull hashmap<string, string> urlparams) {         bundle bundle = new bundle();         if (null != category)             bundle.putlong(key_category, category.getcategory_id());         bundle.putserializable(key_url_params, urlparams);          shopproductlistingfragment fragment = new shopproductlistingfragment();         fragment.setarguments(bundle);         return fragment;     }      public static shopproductlistingfragment getinstance(@nonnull string url) {         bundle bundle = new bundle();         bundle.putserializable(key_url, url);          shopproductlistingfragment fragment = new shopproductlistingfragment();         fragment.setarguments(bundle);         return fragment;     }      public shopproductlistingfragment() {         // required empty public constructor     }      @override     public void oncreate(@nullable bundle savedinstancestate) {         super.oncreate(savedinstancestate);         initvals();     }      @override     public view oncreateview(layoutinflater inflater, viewgroup container,                              bundle savedinstancestate) {         view rootview = inflater.inflate(r.layout.fragment_shop_product_listing, container, false);         butterknife.bind(this, rootview);         initviews();         return rootview;     }      private void initvals() {         bundle bundle = getarguments();          if (null == bundle || bundle.empty == bundle)             throw new nullpointerexception("invalid or null arguments passed fragment shopproductlistingfragment");          if (bundle.containskey(key_category))             categoryid = bundle.getlong(key_category);         mcategory = styfi.getinstance().getcategory(categoryid);         if (bundle.containskey(key_url_params))             urlparams = (hashmap<string, string>) bundle.getserializable(key_url_params);         if (bundle.containskey(key_url))             urlfilter = bundle.getstring(key_url);     }  } 

layout file of activity

<?xml version="1.0" encoding="utf-8"?> <linearlayout xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:orientation="vertical">      <framelayout         android:id="@+id/content_frame"         android:layout_width="match_parent"         android:layout_height="match_parent" />  </linearlayout> 

this how instantiated in activity

@override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity);          if (null == savedinstancestate) {             shopproductlistingfragment fragment = shopproductlistingfragment.getinstance(category, geturlparams(data));              fragmentmanager fragmentmanager = getsupportfragmentmanager();             fragmenttransaction fragmenttransaction = fragmentmanager.begintransaction().replace(r.id.content_frame, fragment, "shop");             fragmenttransaction.commit();         }     }