按钮

<android.support.v4.view.ViewPager
    android:id="@+id/vp"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
</android.support.v4.view.ViewPager>

//3个

<ImageView
    android:background="@mipmap/ic_launcher"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />
<TextView
    android:text="页面一"
    android:layout_marginTop="200dp"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" />

package com.example.yun;

import android.content.Intent;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {

    private ViewPager vp;
    private Button btn;
    List<View> arr = new ArrayList<View>();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        vp =(ViewPager)findViewById(R.id.vp);
        Init();//添加
        vp.setAdapter(new ViewPageAdpt());//适配器
        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MainActivity.this,Main2Activity.class);
                startActivity(intent);
            }
        });
    }

    private void Init() {
        arr.add(View.inflate(MainActivity.this,R.layout.item1,null));
        arr.add(View.inflate(MainActivity.this,R.layout.item2,null));
        View inflat = View.inflate(MainActivity.this, R.layout.item3, null);
        btn =(Button)inflat.findViewById(R.id.btn);
        arr.add(inflat);
    }

    //适配器
    class ViewPageAdpt extends PagerAdapter{
        @Override
        public Object instantiateItem(ViewGroup container, int position) {
            container.addView(arr.get(position));
            return arr.get(position);
        }

        @Override
        public void destroyItem(ViewGroup container, int position, Object object) {
            container.removeView(arr.get(position));
        }

        @Override
        public int getCount() {
            return arr.size();
        }

        @Override
        public boolean isViewFromObject(View view, Object object) {
            return view==object;
        }
    }

}