利用viewpager+RadioGroup+fragment实现页面滑动

代码逻辑很简单，大家看下代码就可以明白：

这是布局

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_alignParentStart="true"
    android:layout_alignParentTop="true">
    <androidx.viewpager.widget.ViewPager
        android:id="@+id/viewpager_show"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

    <RadioGroup
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentStart="true"
        android:layout_alignParentBottom="true"
        android:layout_marginBottom="@dimen/dp_12"
        android:id="@+id/radio"
        android:gravity="center"
        android:orientation="horizontal">

        <RadioButton
            android:id="@+id/radio_btn1"
            android:layout_width="@dimen/dp_60"
            android:layout_height="@dimen/dp_60"
            android:text="首页"
            android:gravity="center"
            android:textSize="16sp"
            android:checked="true"
            android:button="@null" />
        <RadioButton
            android:id="@+id/radio_btn2"
            android:layout_width="@dimen/dp_60"
            android:layout_height="@dimen/dp_60"
            android:text="健康知识"
            android:gravity="center"
            android:textSize="16sp"
            android:button="@null" />
        <RadioButton
            android:id="@+id/radio_btn3"
            android:layout_width="@dimen/dp_60"
            android:layout_height="@dimen/dp_60"
            android:text="健管师"
            android:gravity="center"
            android:textSize="16sp"
            android:button="@null" />
        <RadioButton
            android:id="@+id/radio_btn4"
            android:layout_width="@dimen/dp_60"
            android:layout_height="@dimen/dp_60"
            android:text="商城"
            android:gravity="center"
            android:textSize="16sp"
            android:button="@null" />
        <RadioButton
            android:id="@+id/radio_btn5"
            android:layout_width="@dimen/dp_60"
            android:layout_height="@dimen/dp_60"
            android:text="我的"
            android:gravity="center"
            android:textSize="16sp"
            android:button="@null" />
    </RadioGroup>
</RelativeLayout>
</RelativeLayout>

代码逻辑

 List<Fragment> list = new ArrayList<>();
    ViewPager viewpagerShow;
    RadioButton radioBtn1;
    RadioButton radioBtn2;
    RadioButton radioBtn3;
    RadioGroup radio;
      //添加fragment到集合中
        list.add(new Fragment1());
        list.add(new Fragment2());
        list.add(new Fragment3());
        list.add(new Fragment4());
        list.add(new Fragment5());
        //设置适配器
        MyFragmentPagerAdapter myFragmentPagerAdapter = new 			 MyFragmentPagerAdapter(getSupportFragmentManager(), list);
        viewpagerShow.setAdapter(myFragmentPagerAdapter);
        //设置viewpager默认显示第一个
        viewpagerShow.setCurrentItem(0);

        //设置viewpager的监听
        viewpagerShow.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
     
            @Override
            public void onPageScrolled(int i, float v, int i1) {
     

            }

            @Override
            public void onPageSelected(int i) {
     
                radio.check(radio.getChildAt(i).getId());
            }

            @Override
            public void onPageScrollStateChanged(int i) {
     

            }
        });

        //设置radiogroup的监听
        radio.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
     
            @Override
            public void onCheckedChanged(RadioGroup group, int checkedId) {
     
                switch (checkedId){
     
                    case R.id.radio_btn1:
                        viewpagerShow.setCurrentItem(0,false);
                        break;
                    case R.id.radio_btn2:
                        viewpagerShow.setCurrentItem(1,false);
                        break;
                    case R.id.radio_btn3:
                        viewpagerShow.setCurrentItem(2,false);
                        break;
                    case R.id.radio_btn4:
                        viewpagerShow.setCurrentItem(3,false);
                        break;
                    case R.id.radio_btn5:
                        viewpagerShow.setCurrentItem(4,false);
                        break;

                }
            }
        });
    }

初始化这部分我没有往上加，如果有帮助，欢迎多多关注。