Android Fragment Lifecycle<\/h2>\n<\/div>\n<\/div>\n

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• The lifecycle of android fragment is like the activity lifecycle. There are 12 lifecycle methods for fragment.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

  No.<\/th>\n	Method<\/th>\n	Description<\/th>\n<\/tr>\n
  1.<\/td>\n	onAttach(Activity)<\/td>\n	it is called only once when it is attached with activity.<\/td>\n<\/tr>\n
  2.<\/td>\n	onCreate(Bundle)<\/td>\n	It is used to initialize the fragment.<\/td>\n<\/tr>\n
  3.<\/td>\n	onCreateView(LayoutInflater, ViewGroup, Bundle)<\/td>\n	creates and returns view hierarchy.<\/td>\n<\/tr>\n
  4.<\/td>\n	onActivityCreated(Bundle)<\/td>\n	It is invoked after the completion of onCreate() method.<\/td>\n<\/tr>\n
  5.<\/td>\n	onViewStateRestored(Bundle)<\/td>\n	It provides information to the fragment that all the saved state of fragment view hierarchy has been restored.<\/td>\n<\/tr>\n
  6.<\/td>\n	onStart()<\/td>\n	makes the fragment visible.<\/td>\n<\/tr>\n
  7.<\/td>\n	onResume()<\/td>\n	makes the fragment interactive.<\/td>\n<\/tr>\n
  8.<\/td>\n	onPause()<\/td>\n	is called when fragment is no longer interactive.<\/td>\n<\/tr>\n
  9.<\/td>\n	onStop()<\/td>\n	is called when fragment is no longer visible.<\/td>\n<\/tr>\n
  10.<\/td>\n	onDestroyView()<\/td>\n	allows the fragment to clean up resources.<\/td>\n<\/tr>\n
  11.<\/td>\n	onDestroy()<\/td>\n	allows the fragment to do final clean up of fragment state.<\/td>\n<\/tr>\n
  12.<\/td>\n	onDetach()<\/td>\n	It is called immediately prior to the fragment no longer being associated with its activity.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \n <\/div>\n<\/div>\n \n \n Using a fragment<\/h2>\n<\/div>\n<\/div>\n \n \n \n The general steps to use a Fragment:<\/li>\n<\/ul>\n<\/div>\n<\/div>\n \n \n \n \n \n Create a subclass of Fragment.<\/li>\n Create a layout for the Fragment.<\/li>\n Add the Fragment to a host Activity, either statically or dynamically.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div>\n<\/div>\n \n \n Creating a fragment<\/h2>\n<\/div>\n<\/div>\n \n \n \n To create a Fragment in an app, extend the Fragment class, then override key lifecycle methods to insert your app logic, similar to the way of Activity class.<\/li>\n Instead of extending the base Fragment class, you can extend one of these other, more specific Fragment subclasses:\n \n DialogFragment :<\/b>\u00a0Displays a floating dialog, such as a date picker or time picker.<\/li>\n ListFragment :<\/b>\u00a0Displays a list of items that are managed by an adapter (such as a SimpleCursorAdapter).<\/li>\n PreferenceFragment :<\/b>\u00a0Displays a hierarchy of Preference objects as a list, similar to PreferenceActivity. This is useful when creating a “settings” Activity for your app.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div>\n<\/div>\n \n \n How to create a Fragment in Android Studio<\/h2>\n<\/div>\n<\/div>\n \n \n \n In Project: Android view, expand app > java and select the folder containing the Java code for your app.<\/li>\n Choose File > New > Fragment > Fragment (Blank).<\/li>\n Name the Fragment something like SimpleFragment, or use the supplied name (BlankFragment).<\/li>\n If your Fragment has a UI, check the Create layout XML option if it is not already checked. Other options include:<\/li>\n<\/ul>\n<\/div>\n<\/div>\n \n \n \n \n \n Include fragment factory methods :<\/b>\u00a0Include sample factory method code to initialize the Fragment arguments in a way that encapsulates and abstracts them. Select this option if the number of arguments would make a constructor too complex.<\/li>\n Include interface callbacks :<\/b>\u00a0Select this option if you want to include sample code that defines an interface in the Fragment with callback methods that enable the Fragment to communicate with its host Activity.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div>\n<\/div>\n \n \n \n Click Finish to create a Fragment.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n \n \n Android Fragment Classes<\/h2>\n<\/div>\n<\/div>\n \n \n \n Fragments were added to the Android API in Honeycomb(API 11).\n \n android.app.Fragment : The base class for all fragment definitions<\/li>\n android.app.FragmentManager : The class for interacting with fragment objects inside an activity<\/li>\n android.app.FragmentTransaction : The class for performing an atomic set of fragment operations<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div>\n<\/div>\n \n \n \n When using a compatibility package library provided by Google, the following classes are used for implementation.\n \n android.support.v4.app.FragmentActivity : The base class for all activities using compatibility-based fragment (and loader) features<\/li>\n android.support.v4.app.Fragment<\/li>\n android.support.v4.app.FragmentManager<\/li>\n android.support.v4.app.FragmentTransaction<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div>\n<\/div>\n \n \n Android Fragment Example<\/h2>\n<\/div>\n<\/div>\n \n \n \n Let’s have a look at the simple example of android fragment.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n \n activity_main.xml<\/h2>\n<\/div>\n \n \n <\/div> <LinearLayout xmlns:android="http:\/\/schemas.android.com\/apk\/res\/android" android:layout_width="fill_parent" android:layout_height="fill_parent" > <fragment android:id="@+id\/fragment2" android:name="com.example.fragmentexample.Fragment2" android:layout_width="0px" android:layout_height="match_parent" android:layout_weight="1" \/> <fragment android:id="@+id\/fragment1" android:name="com.example.fragmentexample.Fragment1" android:layout_width="0px" android:layout_height="match_parent" android:layout_weight="1" \/> <\/LinearLayout> <\/code><\/pre> <\/div><\/figure>\n<\/div>\n<\/div>\n \n File: fragment1.xml<\/h2>\n <\/div> <?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" android:background="#00ff00" > <TextView android:id="@+id\/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="fragment frist" android:textAppearance="?android:attr\/textAppearanceLarge" \/> <\/LinearLayout><\/code><\/pre> <\/div>\n<\/div>\n \n File: fragment2.xml<\/h2>\n <\/div> <?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" android:background="#0000ff" > <TextView android:id="@+id\/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Second Fragment" android:textAppearance="?android:attr\/textAppearanceLarge" \/> <\/LinearLayout><\/code><\/pre> <\/div>\n<\/div>\n \n MainActivity class<\/h2>\n<\/div>\n \n File: MainActivity.java<\/h2>\n<\/div>\n \n \n <\/div> package com.example.fragmentexample; import android.os.Bundle; import android.app.Activity; import android.view.Menu; public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); } }<\/code><\/pre> <\/div><\/figure>\n<\/div>\n<\/div>\n \n File: Fragment1.java<\/h2>\n<\/div>\n \n \n <\/div> ackage com.example.fragmentexample; import android.app.Fragment; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; public class Fragment1 extends Fragment { @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { \/\/ TODO Auto-generated method stub return inflater.inflate(R.layout.fragment1,container, false); } } <\/code><\/pre> <\/div><\/figure>\n<\/div>\n<\/div>\n \n <\/div>\n<\/div>\n \n File: Fragment2.java<\/h2>\n <\/div> package com.example.fragmentexample; import android.app.Fragment; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; public class Fragment2 extends Fragment { public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { \/\/ TODO Auto-generated method stub return inflater.inflate(R.layout.fragment2,container, false); } } <\/code><\/pre> <\/div>\n \n \n Output<\/h2>\n<\/div>\n<\/div>\n \n <\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":" Answer : A Fragment is a piece of an activity which enable more modular…<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"passster_activate_protection":false,"passster_protect_child_pages":"","passster_protection_type":"password","passster_password":"","passster_activate_overwrite_defaults":"","passster_headline":"","passster_instruction":"","passster_placeholder":"","passster_button":"","passster_id":"","passster_activate_misc_settings":"","passster_redirect_url":"","passster_hide":"no","passster_area_shortcode":"","gtb_hide_title":false,"gtb_wrap_title":false,"gtb_class_title":"","gtb_remove_headerfooter":false,"footnotes":""},"categories":[105],"tags":[195,161,175,219,201,146,140,145,132,144,133,143,151,156,155,137,182,190,177,193,187,160,172,178,148,135,153,142,185,150,159,152,180,136,157,141,179,221,211,203,199,214,198,209,205,147,149,220,194,222,184,171,173,188,164,186,189,174,218,154,176,196,212,213,223,215,207,204,217,202,208,206,210,200,197,192,158,191,216],"class_list":["post-106","post","type-post","status-publish","format-standard","hentry","category-android","tag-accenture-interview-questions-and-answers","tag-activity-lifecycle-in-android","tag-add-fragment-to-activity","tag-agreeya-solutions-interview-questions-and-answers","tag-allstate-solutions-pvt-ltd-interview-questions-and-answers","tag-android-api","tag-android-app-development","tag-android-app-store","tag-android-apps","tag-android-apps-download","tag-android-developer","tag-android-development","tag-android-development-tutorial","tag-android-device","tag-android-download","tag-android-emulator","tag-android-fragment","tag-android-fragment-example","tag-android-fragment-example-source-code","tag-android-fragment-lifecycle","tag-android-fragment-tutorial","tag-android-lifecycle","tag-android-multiple-fragments-in-one-activity-example","tag-android-phones","tag-android-programming","tag-android-sdk","tag-android-service","tag-android-software","tag-android-studio-fragment","tag-android-studio-tutorial","tag-android-system","tag-android-tutorial","tag-android-update","tag-android-versions","tag-android-video","tag-apps-for-android","tag-best-android-phone","tag-bharti-airtel-interview-questions-and-answers","tag-bosch-india-software-interview-questions-and-answers","tag-capgemini-interview-questions-and-answers","tag-casting-networks-india-pvt-limited-interview-questions-and-answers","tag-cgi-group-inc-interview-questions-and-answers","tag-chetu-interview-questions-and-answers","tag-collabera-technologies-interview-questions-and-answers","tag-dell-international-services-india-pvt-ltd-interview-questions-and-answers","tag-developer-android","tag-eclipse-android","tag-electronics-arts-inc-interview-questions-and-answers","tag-examples-of-fragments","tag-flipkart-interview-questions-and-answers","tag-fragment-android","tag-fragment-android-example","tag-fragment-example-in-android-studio","tag-fragment-examples","tag-fragment-lifecycle","tag-fragmentmanager","tag-fragments-in-android","tag-fragments-in-android-example-androidhive","tag-g-cube-webwide-software-pvt-ltd-interview-questions-and-answers","tag-google-android","tag-how-to-call-fragment-from-activity-in-android-example","tag-ibm-interview-questions-and-answers","tag-indecomm-global-services-interview-questions-and-answers","tag-infosys-technologies-interview-questions-and-answers","tag-lava-international-ltd-interview-questions-and-answers","tag-maintec-technologies-pvt-ltd-interview-questions-and-answers","tag-mphasis-interview-questions-and-answers","tag-oracle-corporation-interview-questions-and-answers","tag-peoplestrong-interview-questions-and-answers","tag-photon-interactive-pvt-ltd-interview-questions-and-answers","tag-prokarma-softech-pvt-ltd-interview-questions-and-answers","tag-sap-labs-india-pvt-ltd-interview-questions-and-answers","tag-symphony-teleca-interview-questions-and-answers","tag-tech-mahindra-interview-questions-and-answers","tag-unitedhealth-group-interview-questions-and-answers","tag-what-is-a-fragment","tag-what-is-android","tag-what-is-fragment","tag-wipro-interview-questions-and-answers"],"yoast_head":"\n