Slider using ViewPager - Android Studio - Java

Create slider containing TextView & ImageView using ViewPager and Single Fragment.


Video:



Step 2: Code

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/main_content"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context=".MainActivity">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/appbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingTop="@dimen/appbar_padding_top"
        android:theme="@style/AppTheme.AppBarOverlay">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:layout_weight="1"
            android:background="?attr/colorPrimary"
            app:layout_scrollFlags="scroll|enterAlways"
            app:popupTheme="@style/AppTheme.PopupOverlay"
            app:title="@string/app_name">

        </android.support.v7.widget.Toolbar>

    </android.support.design.widget.AppBarLayout>

    <android.support.v4.view.ViewPager
        android:id="@+id/container"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_behavior="@string/appbar_scrolling_view_behavior" />

</android.support.design.widget.CoordinatorLayout>

fragment_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/constraintLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:padding="10dp"
    tools:context=".MainActivity$PlaceholderFragment">

    <!-- title will set to this TextView, and change on
    slide right/left-->
    <TextView
        android:id="@+id/titleTv"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Title"
        android:textSize="20sp"
        android:textColor="#000"
        android:textStyle="bold"
        android:textAlignment="center"/>

    <!-- image will set to this ImageView, and change on
    slide right/left-->
    <ImageView
        android:background="@color/colorPrimary"
        android:id="@+id/imageView"
        android:layout_width="match_parent"
        android:layout_height="200dp" />

    <!-- description will set to this TextView, and change on
    slide right/left-->
    <TextView
        android:id="@+id/descriptionTv"
        android:textColor="#000"
        android:text="Here can be the long/multiple lined description of the title"
        android:textSize="20sp"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</LinearLayout>

MainActivity.java

package com.blogspot.atifsoftwares.slider_viewpager_fragment;

import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    /*In this video we will make slider(containing Title, Image, Description)
     * using single fragment layout and view pager*/

    /**
     * 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}.
     */
    private SectionsPagerAdapter mSectionsPagerAdapter;

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

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

        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        //toolbar title
        toolbar.setTitle("Slider");
        //subtitle
        toolbar.setSubtitle("Swipe left/right to change...");

        // 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.container);
        mViewPager.setAdapter(mSectionsPagerAdapter);

    }


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

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    /**
     * 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";

        public PlaceholderFragment() {
        }

        /**
         * 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;
        }

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                                 Bundle savedInstanceState) {

            View rootView = inflater.inflate(R.layout.fragment_main, container, false);
            //TextViews & ImageView from fragment_main.xml
            TextView mTitleTv = rootView.findViewById(R.id.titleTv);
            TextView mDescriptionTv =  rootView.findViewById(R.id.descriptionTv);
            ImageView mImageView =  rootView.findViewById(R.id.imageView);

            //handle swiping
            if (getArguments().getInt(ARG_SECTION_NUMBER) == 1){
                //set title
                mTitleTv.setText("Title One");
                //set image
                mImageView.setImageResource(R.drawable.battery);
                //set description
                mDescriptionTv.setText("Description of the Title One");
            }
            if (getArguments().getInt(ARG_SECTION_NUMBER) == 2){
                //set title
                mTitleTv.setText("Title Two");
                //set image
                mImageView.setImageResource(R.drawable.cpu);
                //set description
                mDescriptionTv.setText("Description of the Title Two");
            }
            if (getArguments().getInt(ARG_SECTION_NUMBER) == 3){
                //set title
                mTitleTv.setText("Title Three");
                //set image
                mImageView.setImageResource(R.drawable.devid);
                //set description
                mDescriptionTv.setText("Description of the Title Three");
            }
            if (getArguments().getInt(ARG_SECTION_NUMBER) == 4){
                //set title
                mTitleTv.setText("Title Four");
                //set image
                mImageView.setImageResource(R.drawable.display);
                //set description
                mDescriptionTv.setText("Description of the Title Four");
            }
            if (getArguments().getInt(ARG_SECTION_NUMBER) == 5){
                //set title
                mTitleTv.setText("Title Five");
                //set image
                mImageView.setImageResource(R.drawable.memory);
                //set description
                mDescriptionTv.setText("Description of the Title Five");
            }

            return rootView;
        }
    }

    /**
     * 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 5 total pages.(we will show 5 pages)
            return 5;
        }
    }
}

Step 3: Run Project

Output:
Slider using ViewPager - Android Studio - Java

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