Access View inside Fragment from Activity

In this exercise, TextView inside Fragment can be accessed from Activity.



Main Layout:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="horizontal" >

    <LinearLayout 
        android:layout_width="0px"
        android:layout_weight="1"
        android:layout_height="match_parent" 
        android:orientation="vertical" >
    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content" 
        android:text="Activity:" />
    <EditText
        android:id="@+id/activitytext"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
    <Button
        android:id="@+id/sendtofragment"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" 
        android:text="Send Text to Fragment" />
    </LinearLayout>
    <LinearLayout
        android:id="@+id/myfragment"
        android:layout_width="0px"
        android:layout_weight="3"
        android:layout_height="match_parent" />

</LinearLayout>

Main Activity:

package com.exercise.AndroidFragment;

import android.app.Activity;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class AndroidFragmentActivity extends Activity {
 
 EditText textActivity;
 Button buttonSendToFragment;
 MyFragment myFragment;
 
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        textActivity = (EditText)findViewById(R.id.activitytext);
     buttonSendToFragment = (Button)findViewById(R.id.sendtofragment);
        
     // get an instance of FragmentTransaction from your Activity 
        FragmentManager fragmentManager = getFragmentManager();
        FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();

        //add a fragment 
        myFragment = new MyFragment();
        fragmentTransaction.add(R.id.myfragment, myFragment);
        fragmentTransaction.commit();
        
        buttonSendToFragment.setOnClickListener(new OnClickListener(){

   @Override
   public void onClick(View arg0) {
    // TODO Auto-generated method stub
    String text = textActivity.getText().toString();
    TextView textFragment = (TextView)findViewById(R.id.fragmenttext);
    textFragment.setText(text);
   }});
    }
}

Fragment Layout:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content" 
        android:text="Fragment:" />
    <TextView
        android:id="@+id/fragmenttext"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
</LinearLayout>

Fragment:

package com.exercise.AndroidFragment;

import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class MyFragment extends Fragment {

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container,
    Bundle savedInstanceState) {
   // TODO Auto-generated method stub
   View myFragmentView = inflater.inflate(R.layout.fragmentlayout, container, false);
   return myFragmentView;
  }

}

Download the files.