Ashwini Purohit Ashwini Purohit - 4 months ago 18
Android Question

How to link two xml pages in Android app when a button is clicked?

I am making a simple app in which on home page, a button is placed. When the button is clicked, it must display a new page (xml in layout). How to do that ..

My app contains in src directory, There are two java files.
1. Activity2
2. Main_activity
and two xml files in layout:
1. fragment_main.xml
2. Activity.xml

I want that when i click "Technical button", it should display Activity.xml page from layout..

My codes:


  1. Main_Activity.java

    package com.example.vit;


    import java.util.Locale;

    import android.util.Log;
    import android.support.v7.app.ActionBarActivity;
    import android.support.v7.app.ActionBar;
    import android.support.v4.app.Fragment;
    import android.support.v4.app.FragmentManager;
    import android.support.v4.app.FragmentTransaction;
    import android.support.v4.app.FragmentPagerAdapter;
    import android.app.Activity;
    import android.content.Intent;
    import android.os.Bundle;
    import android.support.v4.view.ViewPager;
    import android.view.Gravity;
    import android.view.LayoutInflater;
    import android.view.Menu;
    import android.view.MenuItem;
    import android.view.View;
    import android.view.ViewGroup;
    import android.widget.TextView;

    public class MainActivity extends ActionBarActivity implements
    ActionBar.TabListener {

    /**
    * The {@link android.support.v4.view.PagerAdapter} that will provide
    * fragments for each of the sections. We use a {@link FragmentPagerAdapter}
    * derivative, which will keep every loaded fragment in memory. If this
    * becomes too memory intensive, it may be best to switch to a
    * {@link android.support.v4.app.FragmentStatePagerAdapter}.
    */
    SectionsPagerAdapter mSectionsPagerAdapter;

    /**
    * The {@link ViewPager} that will host the section contents.
    */
    ViewPager mViewPager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    // Set up the action bar.
    final ActionBar actionBar = getSupportActionBar();
    actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

    // Create the adapter that will return a fragment for each of the three
    // primary sections of the activity.
    mSectionsPagerAdapter = new SectionsPagerAdapter(
    getSupportFragmentManager());

    // Set up the ViewPager with the sections adapter.
    mViewPager = (ViewPager) findViewById(R.id.pager);
    mViewPager.setAdapter(mSectionsPagerAdapter);

    // When swiping between different sections, select the corresponding
    // tab. We can also use ActionBar.Tab#select() to do this if we have
    // a reference to the Tab.
    mViewPager
    .setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
    @Override
    public void onPageSelected(int position) {
    actionBar.setSelectedNavigationItem(position);
    }
    });

    // For each of the sections in the app, add a tab to the action bar.
    for (int i = 0; i < mSectionsPagerAdapter.getCount(); i++) {
    // Create a tab with text corresponding to the page title defined by
    // the adapter. Also specify this Activity object, which implements
    // the TabListener interface, as the callback (listener) for when
    // this tab is selected.
    actionBar.addTab(actionBar.newTab()
    .setText(mSectionsPagerAdapter.getPageTitle(i))
    .setTabListener(this));
    }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();
    if (id == R.id.action_settings) {
    return true;
    }
    return super.onOptionsItemSelected(item);
    }

    @Override
    public void onTabSelected(ActionBar.Tab tab,
    FragmentTransaction fragmentTransaction) {
    // When the given tab is selected, switch to the corresponding page in
    // the ViewPager.
    mViewPager.setCurrentItem(tab.getPosition());
    }

    @Override
    public void onTabUnselected(ActionBar.Tab tab,
    FragmentTransaction fragmentTransaction) {
    }

    @Override
    public void onTabReselected(ActionBar.Tab tab,
    FragmentTransaction fragmentTransaction) {
    }

    /**
    * A {@link FragmentPagerAdapter} that returns a fragment corresponding to
    * one of the sections/tabs/pages.
    */
    public class SectionsPagerAdapter extends FragmentPagerAdapter {

    public SectionsPagerAdapter(FragmentManager fm) {
    super(fm);
    }

    @Override
    public Fragment getItem(int position) {
    // getItem is called to instantiate the fragment for the given page.
    // Return a PlaceholderFragment (defined as a static inner class
    // below).
    return PlaceholderFragment.newInstance(position + 1);
    }

    @Override
    public int getCount() {
    // Show 3 total pages.
    return 3;
    }

    @Override
    public CharSequence getPageTitle(int position) {
    Locale l = Locale.getDefault();
    switch (position) {
    case 0:
    return getString(R.string.title_section1).toUpperCase(l);
    case 1:
    return getString(R.string.title_section2).toUpperCase(l);
    case 2:
    return getString(R.string.title_section3).toUpperCase(l);
    }
    return null;
    }
    }

    /**
    * A placeholder fragment containing a simple view.
    */
    public static class PlaceholderFragment extends Fragment {
    /**
    * The fragment argument representing the section number for this
    * fragment.
    */
    private static final String ARG_SECTION_NUMBER = "section_number";

    /**
    * Returns a new instance of this fragment for the given section number.
    */
    public static PlaceholderFragment newInstance(int sectionNumber) {
    PlaceholderFragment fragment = new PlaceholderFragment();
    Bundle args = new Bundle();
    args.putInt(ARG_SECTION_NUMBER, sectionNumber);
    fragment.setArguments(args);
    return fragment;
    }

    public PlaceholderFragment() {
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
    Bundle savedInstanceState) {
    View rootView = inflater.inflate(R.layout.fragment_main, container,
    false);
    return rootView;
    }
    }
    public void onClick(View v)
    {
    Intent intent = new Intent (v.getContext(),Activity.class);
    startActivityForResult (intent,0);
    }


    }



2.Activity2.java

package com.example.vit;
import android.app.Activity;
public class Activity2 extends Activity


public void onCreate(Bundle, savedInstanceState)
{
{
super.onCreate(savedInstanceState);
setContentView(R.layout.Activity);
}

}

3. fragment_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.vit.MainActivity$PlaceholderFragment" >

<TextView
android:id="@+id/section_label"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />

<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="31dp"
android:onClick="doSomething"
android:text="Technical" />

<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="50dp"
android:text="Non Technical" />

</LinearLayout>



  1. Activity.xml



    <TextView
    android:id="@+id/section_label"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" />

    <TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Your request is being processed"
    android:textAppearance="?android:attr/textAppearanceLarge" />




Answer Source
Intent intent = new Intent(this, ActivityTwo.class);
this.startActivity ( intent );