android studio用viewpaper2+fragment实现滑动页面+点击跳转

首先创建一个新的empty activity

然后右键com.example.text，点击new、java class创建一个新的class命名为adapter来做viewpaper2的适配器

 再在com.example.text里创建几个fragment.

准备工作结束。

下面按喜好修改布局以及重写适配器。

布局参考

activity_main.xml

fragment布局随便写一下就行，滑动能区分即可

MainActivity.java

package com.example.text;

import androidx.appcompat.app.AppCompatActivity;
import androidx.fragment.app.Fragment;
import androidx.recyclerview.widget.RecyclerView;
import androidx.viewpager.widget.ViewPager;
import androidx.viewpager2.widget.ViewPager2;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;
import android.widget.LinearLayout;

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

public class MainActivity extends AppCompatActivity implements View.OnClickListener {
    private ImageView imag1,imag2;



    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        a();
        init();
imag1.setOnClickListener(this::onClick);
imag2.setOnClickListener(this::onClick);
    }

    private void init() {
        imag1 = findViewById(R.id.image1);
        imag2 = findViewById(R.id.image2);
    }

    public void a() {
        List list=new ArrayList<>();
        list.add(0,new BlankFragment());  //把之前创建的fragment添加进去
        list.add(1,new BlankFragment2());
        ViewPager2 viewPager2 =findViewById(R.id.viewpager);
        viewPager2.setAdapter(new adapter(getSupportFragmentManager(),getLifecycle(),list));

}
    @Override
    public void onClick(View view) {
        ViewPager2 viewPager2 =findViewById(R.id.viewpager);
switch (view.getId()){
    case R.id.image1:
        viewPager2.setCurrentItem(0,true);  //true滑动跳转，false不滑动跳转
        break;
    case R.id.image2:
        viewPager2.setCurrentItem(1,true);
}
    }
}

adapter.java

package com.example.text;

import android.content.Intent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentPagerAdapter;
import androidx.fragment.app.FragmentStatePagerAdapter;
import androidx.lifecycle.Lifecycle;
import androidx.recyclerview.widget.RecyclerView;
import androidx.viewpager2.adapter.FragmentStateAdapter;

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

public  class adapter extends FragmentStateAdapter {
    List list = new ArrayList<>();
    public adapter(@NonNull FragmentManager fragmentManager, @NonNull Lifecycle lifecycle, List list){
        super(fragmentManager,lifecycle);
        this.list = list;
    }
    @NonNull
    @Override
    public Fragment createFragment(int position) {
        return list.get(position);
    }

    @Override
    public int getItemCount() {
        return list.size();
    }
}

展示