Reduce distance between textviews using gallery in android

I want to scroll listview horizontally in my android application. I found many solutions on inteet but that doesn't work for me. Anywhere i found a solution to use gallery instead of listview. But now problem is that, the distance between two consecutive textviews is very much, as shown in image. So i want to reduce it. So that i can scroll and view text effectively. Screen shot of current view

MainActivity

import android.os.Bundle;
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.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Gallery;

import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {

    ArrayList<String> datalist;
    Gallery gallery;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        gallery=(Gallery)findViewById(R.id.gallery);

        datalist=new ArrayList<>();

        datalist.add("AAAAA");
        datalist.add("BBBBB");
        datalist.add("CCCCC");
        datalist.add("DDDDD");
        datalist.add("EEEEE");
        datalist.add("FFFFF");

        final MyGalleryAdapter adapter=new MyGalleryAdapter(this,datalist);
        gallery.setAdapter(adapter);

    }
}

MyGalleryAdapter.java

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.TextView;

import java.util.ArrayList;

/**
 * Created by Farhan on 7/1/2016.
 */
public class MyGalleryAdapter extends BaseAdapter {
    Context context;
    ArrayList<String> datalist;

    public MyGalleryAdapter(Context context, ArrayList<String> datalist){
        this.context=context;
        this.datalist=datalist;
    }

    @Override
    public int getCount() {
        retu datalist.size();
    }

    @Override
    public Object getItem(int position) {
        retu 0;
    }

    @Override
    public long getItemId(int position) {
        retu position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        LayoutInflater layoutInflater=(LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        View view=layoutInflater.inflate(R.layout.item,parent,false);

        TextView textView=(TextView)view.findViewById(R.id.tv);
        textView.setText(datalist.get(position));

        retu view;
    }
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent"
    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:showIn="@layout/activity_main" tools:context=".MainActivity">

    <Gallery
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:id="@+id/gallery"/>
</RelativeLayout>

item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:id="@+id/tv"
        android:text="google"
        android:textSize="20sp"/>

</LinearLayout>

Can you also guide me? Because i want to add gallery view in listview to scroll horizontally and vertically both. Is that this solution work for my problem?