Android轮播图，代码全，已经实现，欢迎私信

逻辑代码

package com.example.viewpager;

import android.annotation.SuppressLint;
import android.os.Handler;
import android.os.Message;
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.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;

@SuppressLint(“HandlerLeak”)
public class MainActivity extends AppCompatActivity {
private ViewPager viewPager;
private TextView tv_title;
private LinearLayout ll_point_group;
private ArrayList imageViews;
//图片资源id
private final int[] imageIds = {
R.mipmap.chaxun,
R.mipmap.jiaoxue,
R.mipmap.kebiao,
R.mipmap.music,
R.mipmap.student
};
//上一次高亮显示的位置
private int prePosition = 0;

private boolean isDragging = false;
//图片标题集合
private final String[] imageDescription =
        {
                "哈喽1",
                "hello2",
                "hello3",
                "hello4",
                "hello5"
        };
//是否已经滚动
private boolean isScroll = false;
private Handler handler = new Handler() {
    @Override
    public void handleMessage(@NonNull Message msg) {
        super.handleMessage(msg);
        int item = viewPager.getCurrentItem() + 1;
        viewPager.setCurrentItem(item);
        //延迟4s发送消息
        handler.sendEmptyMessageDelayed(0, 4000);

    }
};


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    viewPager = findViewById(R.id.viewpager);
    tv_title = findViewById(R.id.tv_title);
    ll_point_group = findViewById(R.id.ll_point_group);

    //准备数据
    imageViews = new ArrayList<>();
    for (int i = 0; i < imageIds.length; i++) {
        ImageView imageView = new ImageView(this);
        imageView.setBackgroundResource(imageIds[i]);//可以来自网络
        //添加到集合中
        imageViews.add(imageView);

        //添加点击
        ImageView point = new ImageView(this);
        point.setBackgroundResource(R.drawable.point_selector);

        LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(18, 18);

        if (i == 0) {
            point.setEnabled(true);//显示红色
        } else {
            point.setEnabled(false);
            params.leftMargin = 18;
        }

        point.setLayoutParams(params);

        ll_point_group.addView(point);

    }
    viewPager.setAdapter(new MyPageAdapter());

//设置监听viewpager页面变化
viewPager.addOnPageChangeListener(new MyOnPageChangeListener());
//设置中间位置
int item = Integer.MAX_VALUE / 2 - Integer.MAX_VALUE % imageViews.size();//要保证imaggeview的整数倍
viewPager.setCurrentItem(item);

    tv_title.setText(imageDescription[0]);
    //发消息
    handler.sendEmptyMessageDelayed(0, 3000);
}

class MyOnPageChangeListener implements ViewPager.OnPageChangeListener {

    /**
     * 当页面滚动或者滑动的时候回调
     *
     * @param i  当前页面位置
     * @param v  滑动页面的百分比
     * @param i1 再屏幕上滑动的像素
     */
    @Override
    public void onPageScrolled(int i, float v, int i1) {

    }

    /**
     * 当某个页面被选中的时候调用
     *
     * @param i 被选中的页面的位置
     */
    @Override
    public void onPageSelected(int i) {
        int realPosition = i % imageViews.size();

//吧上一个高亮的设置为默认，当前设置为高亮，
// //设置对应页面的文本信息
tv_title.setText(imageDescription[realPosition]);
ll_point_group.getChildAt(prePosition).setEnabled(false);
ll_point_group.getChildAt(realPosition).setEnabled(true);
prePosition = realPosition;
}

    /**
     * 当页面滚动状态变化的时候回调
     * 静止->滑动
     * 滑动—_>静止
     *
     * @param i
     */
    @Override
    public void onPageScrollStateChanged(int i) {
        if (i == ViewPager.SCROLL_STATE_SETTLING) {

        } else if (i == ViewPager.SCROLL_STATE_IDLE && isDragging) {
            //空闲
            isDragging = false;

            handler.removeCallbacksAndMessages(null);
            handler.sendEmptyMessageDelayed(0, 3000);

        } else if (i == ViewPager.SCROLL_STATE_DRAGGING) {
            //拖拽
            isDragging = true;
            handler.removeCallbacksAndMessages(null);
        }
    }
}

class MyPageAdapter extends PagerAdapter implements View.OnTouchListener, View.OnClickListener {
    /**
     * 得到图片总数
     *
     * @return
     */
    @Override
    public int getCount() {
        //return imageViews.size();
        return Integer.MAX_VALUE;
    }

    /**
     * 相当于getView方法
     * @param container viewpager 自身
     * @param position  当前实例化页面得位置
     * @return
     */
    @NonNull
    @Override
    public Object instantiateItem(@NonNull ViewGroup container, int position) {
        int realPosition = position % imageViews.size();
        ImageView imageView = imageViews.get(realPosition);
        container.addView(imageView);//添加到viewpager中
        imageView.setTag(position);
        imageView.setOnTouchListener(this);
        imageView.setOnClickListener(this);
        return imageView;
    }

    /**
     * 释放资源
     *
     * @param container viewpager
     * @param position  释放的位置
     * @param object    释放的页面
     */
    @Override
    public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
        //super.destroyItem(container, position, object);
        container.removeView((View) object);
    }

    /**
     * 比较view跟object是否同一个实例
     *
     * @param view 页面
     * @param o    instantiateItem返回的结果
     * @return
     */
    @Override
    public boolean isViewFromObject(@NonNull View view, @NonNull Object o) {
        return view == o;
    }

    @Override
    public boolean onTouch(View view, MotionEvent motionEvent) {
        switch (motionEvent.getAction()) {
            case MotionEvent.ACTION_DOWN://按下
                handler.removeCallbacksAndMessages(null);
                Log.d("TAG", "onTouch: 手指按下");
                break;
            case MotionEvent.ACTION_MOVE://手机再控件上移动
                break;
            case MotionEvent.ACTION_UP://离开
                Log.e("TAG", "onTouch: 手指离开");
                handler.removeCallbacksAndMessages(null);
                handler.sendEmptyMessageDelayed(0, 3000);
                break;
        }
        return false;
    }

    @Override
    public void onClick(View view) {
        Log.e("TAG", "onClick: 点击事件");
        int position = (int) view.getTag()%imageViews.size();
        String text=imageDescription[position];
        Toast.makeText(MainActivity.this,text,Toast.LENGTH_LONG).show();
    }
}

}

布局文件代码

由RelativeLayout，ViewPager，LinearLayout，构成。下面展示 代码片.

// An highlighted block
<?xml version="1.0" encoding="utf-8"?>
<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"
    tools:context=".MainActivity">

    <android.support.v4.view.ViewPager
        android:id="@+id/viewpager"
        android:layout_width="match_parent"
        android:layout_height="180dp"

        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#44000000"
        android:padding="5dp"
        android:layout_alignBottom="@+id/viewpager"
        android:orientation="vertical">

        <TextView
            android:id="@+id/tv_title"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center"
            android:padding="3dp"
            android:text="美人鱼"
            android:textColor="#ffffff" />

        <LinearLayout
            android:id="@+id/ll_point_group"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
            android:layout_gravity="center_horizontal"></LinearLayout>
    </LinearLayout>
</RelativeLayout>
## 选择器文件代码
###point_selector
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/point_normal" android:state_enabled="false" />
    <item android:drawable="@drawable/point_press" android:state_enabled="true" />
</selector>

###point_normal
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="oval">
    <size
        android:width="16dp"
        android:height="16dp" />
    <solid android:color="#44000000" />
</shape>
###point_press
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="oval">
    <size android:height="16dp" android:width="16dp"/>
    <solid android:color="#ff0000"/>
</shape>

本文地址：https://blog.csdn.net/qq_37855976/article/details/107934532