AndroidStadio實現簡單左右滑屏切換界面操作

新建xml文件second

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#FF00FF">
</LinearLayout>

新建xml文件third

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#000000">
</LinearLayout>

MainActivity：
在MainActivity中

import android.support.annotation.NonNull;
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.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {
    private ViewPager viewPager;

    private View view1,view2,view3;

    private List<View> viewlist;

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

    private void initView() {
        viewPager=(ViewPager)findViewById(R.id.vp);
        //獲取佈局文件
        LayoutInflater inflater=getLayoutInflater();
        view1=inflater.inflate(R.layout.activity_main,null);
        view2=inflater.inflate(R.layout.second,null);
        view3=inflater.inflate(R.layout.third,null);
        //將三個View添加進viewlist數組
        viewlist=new ArrayList<View>();
        viewlist.add(view1);
        viewlist.add(view2);
        viewlist.add(view3);
        //設置適配器
        PagerAdapter pagerAdapter=new PagerAdapter() {
            //適配器必須有一下四個方法
            //返回界面數量
            public int getCount() {
                return viewlist.size();
            }

            //判斷view和o的對應關係，instantiateItem返回view
            public boolean isViewFromObject(@NonNull View view, @NonNull Object o) {
                return view==o;
            }
            //移除當前界面
            public void destroyItem(ViewGroup container,int position,Object object){
                container.removeView(viewlist.get(position));
            }

            //添加界面至當前，並返回當前界面
            public Object instantiateItem(@NonNull ViewGroup container, int position) {
                container.addView(viewlist.get(position));
                return viewlist.get(position);
            }
        };
        //綁定適配器
        viewPager.setAdapter(pagerAdapter);

    }
}