3/16/2014 Android Learning Tutorial

http://sunil-android.blogspot.in/search?updated-max=2013-07-24T13:18:00-07:00&max-results=7&start=14&by-date=false 9/19

Posted by sunil gupta at 03:43 5 comments:

Labels: ListFragment

Location: Bangalore, Karnataka, India

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Saturday, 13 July 2013

What is Fragment ? And Start With HelloFragment

Hi guys!!

Today I am going to discuss about Fragment. Now it is available with new API open source library android-

support v4 or v7 or v13. android-support v13 is the recent api library.

So lets start to know about fragment the question is arises first what is Fragment?

A fragment is a class implementing a portion of an activity.

A fragment represents a particular operation or interface running within a larger activity.

Fragments must be embedded in activities; they cannot run independent of activities.

Most fragments define their own layout of views that live within the activity’s view hierarchy.

A fragment has its own life-cycle, closely related to the life-cycle of its host activity.

A fragment can be a static part of an activity, instantiated automatically during the activity’s

creation.

Or, you can create, add, and remove fragments dynamically in an activity at run-time.

Fragments have a few extra life cycle callbacks managing interaction with the activity:

onAttach(Activity) => Called when the fragment has been associated with the activity.

onCreateView(LayoutInflater, ViewGroup, Bundle) => Called to create the view hierarchy

associated

What is Fragment in Android?

What is Life cycle of Fragment ?

3/16/2014 Android Learning Tutorial

http://sunil-android.blogspot.in/search?updated-max=2013-07-24T13:18:00-07:00&max-results=7&start=14&by-date=false 10/19

with the fragment.

onActivityCreated(Bundle) => Called when the activity’s onCreate() method has returned.

onDestroyView() => Called when the view hierarchy associated with the fragment is being

removed.

onDetach() => Called when the fragment is being disassociated from the activity.

Fragments were added to the Android API in Honeycomb, API 11.

The primary classes related to fragments are:

android.app.Fragment

android.app.FragmentManager

android.app.FragmentTransaction

The primary classes related to fragments are available in library package are:

android.support.v4.app.FragmentActivity

android.support.v4.app.Fragment

android.support.v4.app.FragmentManager

android.support.v4.app.FragmentTransaction

To use the Compatibility Package features, your activity must use android.support.v4.app.

FragmentActivity as a base class, rather than android.app.Activity or one of its subclasses.

Lets start the use of this fragment with Simple Hello Fragment.

Fragment Implemented ?

main.xml

1234

<linearlayout android:layout_height="fill_parent" android:layout_width="fill_parent" <fragment android:layout_height="wrap_content" android:layout_width="fill_parent" android:name=</fragment></linearlayout>

hello_fragment.xml

12

<linearlayout android:layout_height="match_parent" android:layout_width="match_parent"

?

?

3/16/2014 Android Learning Tutorial

http://sunil-android.blogspot.in/search?updated-max=2013-07-24T13:18:00-07:00&max-results=7&start=14&by-date=false 11/19

Posted by sunil gupta at 00:37 1 comment:

Labels: What is Fragment

Location: Bangalore, Karnataka, India

Cheers Guys!!

Please share this site guys!

KidsMitra

34

<textview android:layout_gravity="center_horizontal" android:layout_height="wrap_content"</textview></linearlayout>

HelloFragment

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package com.sunil.fragment; import com.sunil.fragment.R;import android.os.Bundle;import android.support.v4.app.Fragment;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup; public class HelloFragment extends Fragment{ @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View v = inflater.inflate(R.layout.hello_fragment_layout, null); return v; } }

MainActivity.java

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package com.sunil.fragment; import com.sunil.fragment.R;import android.os.Bundle;import android.support.v4.app.FragmentActivity; public class MainActivity extends FragmentActivity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); }}

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Tuesday, 2 July 2013

Mostly Used Android Code

Hi Guys!

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