XML : ViewPager Add only single data of 500 data

ViewPager Add only single data of 500 data

Problem

i m fetching All data from sqlite db (500 data items) but viewpager shows only one item and when flip the page it repeat the same item what i m doing wrong?

class Test

   package "";    import android.app.Activity;  import android.content.Context;  import android.database.Cursor;  import android.database.sqlite.SQLiteDatabase;  import android.os.Bundle;  import android.support.v4.view.PagerAdapter;  import android.support.v4.view.ViewPager;  import android.util.Log;  import android.view.LayoutInflater;  import android.view.View;  import android.widget.TextView;  import android.widget.Toast;    import java.util.ArrayList;  import java.util.List;    /**   * Created by Altaf on 26-Mar-16.   */  public class Test extends Activity {        private static final String DB_NAME = "dbname";      private static final String TABLE_NAME = "tablename";      private SQLiteDatabase database;        MyAdapter mAdapter;      private List<String> testContactName = new ArrayList<>();        @Override      protected void onCreate(Bundle savedInstanceState) {          super.onCreate(savedInstanceState);          setContentView(R.layout.test);              ViewPager mViewPager = (ViewPager) findViewById(R.id.testvp);          mAdapter = new MyAdapter();          mViewPager.setAdapter(mAdapter);            getAllContacts();                }        public void getAllContacts() {          DatabaseHelper dbOpenHelper = new DatabaseHelper(this, DB_NAME);          database = dbOpenHelper.openDataBase();            String query = "select * from "+TABLE_NAME;            Cursor cursor = database.rawQuery(query, null);            if(cursor!=null)          {              cursor.moveToFirst();              for(int c=0; c < cursor.getCount(); c++)              {                  String name = cursor.getString(cursor.getColumnIndex("content"));                  Toast.makeText(getApplicationContext(), name + "content", Toast.LENGTH_LONG).show();                  testContactName.add(name);                //  testContactName.notifyAll();                  mAdapter.notifyDataSetChanged();                  Log.i("Name: " + "" + "---", name);                }}            cursor.close();      }            private class MyAdapter  extends PagerAdapter {            public MyAdapter() {              super();          }            @Override          public int getCount() {                return testContactName.size();            }          @Override          public boolean isViewFromObject(View collection, Object object) {                return collection == ((View) object);          }            @Override          public Object instantiateItem(View collection, int position) {                LayoutInflater inflater = (LayoutInflater) collection.getContext()                      .getSystemService(Context.LAYOUT_INFLATER_SERVICE);                View view = inflater.inflate(R.layout.test1, null);             TextView pagenumber;              pagenumber = (TextView) view.findViewById(R.id.tv_test1);                try {                  pagenumber.setText(testContactName.get(position));                } catch (Exception e1) {                  // TODO Auto-generated catch block                  e1.printStackTrace();              }              ((ViewPager) collection).addView(view, 0);              return view;            }            @Override          public void destroyItem(View collection, int position, Object view) {              ((ViewPager) collection).removeView((View) view);              mAdapter.notifyDataSetChanged();            }      }  }    

test.xml

      <?xml version="1.0" encoding="utf-8"?>  <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"      android:orientation="vertical" android:layout_width="match_parent"      android:layout_height="wrap_content">        <android.support.v4.view.ViewPager          android:id="@+id/testvp"          android:layout_width="match_parent"          android:layout_height="match_parent">      </android.support.v4.view.ViewPager>     </RelativeLayout>    

test1.xml

   <?xml version="1.0" encoding="utf-8"?>  <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"      android:orientation="vertical" android:layout_width="match_parent"      android:layout_height="match_parent">        <TextView          android:layout_width="wrap_content"          android:layout_height="wrap_content"          android:textAppearance="?android:attr/textAppearanceSmall"          android:text="Small Text"          android:id="@+id/tv_test1"          android:layout_gravity="top|center"          android:layout_alignParentTop="true"          android:layout_centerHorizontal="true" />  </RelativeLayout>