无限轮播图_le080625-优快云博客

XML布局
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" android:id="@+id/activity_main"
    android:layout_width="match_parent" android:layout_height="match_parent"
>
    <android.support.v4.view.ViewPager
        android:id="@+id/view_pager"
        android:layout_width="match_parent"
        android:layout_height="200dp">
    </android.support.v4.view.ViewPager>
    <LinearLayout
        android:id="@+id/linear_layout"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/view_pager"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="20dp"
        android:orientation="horizontal">
    </LinearLayout>
</RelativeLayout>
 
MainActivity主页面

package com.example.demo13_01;
import android.os.Handler;
import android.os.Message;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ImageView;
import android.widget.LinearLayout;
import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {
    private ViewPager viewPager;
    private List<String> list;
    private Handler handler = new Handler(){
        @Override
        public void handleMessage(Message msg) {
            if (msg.what == 0){
                int currentItem = viewPager.getCurrentItem();
                viewPager.setCurrentItem(currentItem+1);

                handler.sendEmptyMessageDelayed(0,2000);
            }
        }
    };

    private LinearLayout linearLayout;
    private List<ImageView> images;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        viewPager = (ViewPager) findViewById(R.id.view_pager);
        linearLayout = (LinearLayout) findViewById(R.id.linear_layout);
        //数据.....装的是path路径
        list = new ArrayList<>();
        list.add("https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1505151721118&di=649c9a43aed72fbc4d99ec1a031510c6&imgtype=0&src=http%3A%2F%2Fimg.zcool.cn%2Fcommunity%2F015c7d574b9f8f6ac72525aee98351.jpg");
        list.add("https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1505151956771&di=0eb6f306991d24b67a13ceb336f80102&imgtype=0&src=http%3A%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F00613def3f1beb7a35ae136341be2b589bc46a2d.jpg_320x200.jpg");
        list.add("https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1505151847685&di=c7a4b5d08ec43fa629bcb690039a7629&imgtype=0&src=http%3A%2F%2Fattimg.dospy.com%2Fimg%2Fday_080625%2F20080625_2e91a10c444877e88827vri2ZKdGMvQo.jpg");
        list.add("https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1505151825129&di=70bf74b87d8a15cb91a2d79f15ed0eaf&imgtype=0&src=http%3A%2F%2Fattimg.dospy.com%2Fimg%2Fday_081016%2F20081016_fee215664d5740e56c13E2YB8giERFEX.jpg");
        list.add("https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1505746504&di=930c4d677a02328a142d6fa85ed14580&imgtype=jpg&er=1&src=http%3A%2F%2Fattimg.dospy.com%2Fimg%2Fday_090113%2F20090113_6ac58b42bea94f0b318e1B6BZb5lPZl5.jpg");
        //初始化小圆点
        initDoc();
        //设置适配器
        ImagePager imagePager = new ImagePager(MainActivity.this, list,handler);
        //
        viewPager.setAdapter(imagePager);
        //设置ViewPager初始展示的位置
        viewPager.setCurrentItem(list.size()*10000);
        //发送延时消息
        handler.sendEmptyMessageDelayed(0,2000);
        //viewPager页面改变的监听事件
        viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
            @Override
            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
            }
            @Override
            public void onPageSelected(int position) {
                //如果选中了这一页,,,当前小圆点红色,,,否则绿色
                for (int i = 0;i<images.size();i++){
                    if (i== position%images.size()){
                        images.get(i).setImageResource(R.drawable.doc_select);
                    }else {
                        images.get(i).setImageResource(R.drawable.doc_select_no);
                    }
                }
            }
            @Override
            public void onPageScrollStateChanged(int state) {
            }
        });

    }

    private void initDoc() {
        //首先需要一个集合记录这些小圆点的图片,,,,当页面切换的时候,可以从集合中取出imageView进行显示图片的设置
        images = new ArrayList<>();
        linearLayout.removeAllViews();//清空/移除所有的view

        for (int i = 0;i<list.size();i++){
            ImageView imageView = new ImageView(MainActivity.this);

            if (i==0){//显示第一页,,,红的
                imageView.setImageResource(R.drawable.doc_select);
            }else {//绿的
                imageView.setImageResource(R.drawable.doc_select_no);
            }

            //添加到集合
            images.add(imageView);

            //加入到线性布局中显示
            LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,LinearLayout.LayoutParams.WRAP_CONTENT);

            params.setMargins(5,0,5,0);

            linearLayout.addView(imageView,params);
        }

    }
}
ImagePager适配器

package com.example.demo13_01;

import android.content.Context;
import android.content.Intent;
import android.os.Handler;
import android.support.v4.view.PagerAdapter;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.Toast;
import com.nostra13.universalimageloader.core.ImageLoader;
import java.util.List;

/**
 * Created by My on 2017/9/12.
 */
public class ImagePager extends PagerAdapter {
    Context context;
    List<String> list;
    Handler handler;
    public ImagePager(Context context, List<String> list, Handler handler) {
        this.context = context;
        this.list = list;
        this.handler = handler;
    }

    @Override
    public int getCount() {
        return Integer.MAX_VALUE;
    }

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

    @Override
    public Object instantiateItem(ViewGroup container, int position) {
        //返回当前显示的视图
        ImageView imageView = new ImageView(context);
        imageView.setScaleType(ImageView.ScaleType.FIT_XY);

        //加载网络的图片
        ImageLoader.getInstance().displayImage(list.get(position%list.size()),imageView);

        /*imageView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Log.i("----","点击事件执行了");
            }
        });*/

        //imageView触摸的监听事件
        imageView.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View view, MotionEvent motionEvent) {
                boolean isTiaoZhuan = true;
                switch (motionEvent.getAction()){//获取动作
                    case MotionEvent.ACTION_DOWN://按下
                        Log.i("--","ACTION_DOWN");
                        handler.removeCallbacksAndMessages(null);
                        break;
                    case MotionEvent.ACTION_MOVE://移动
                        Log.i("--","ACTION_MOVE");
                        isTiaoZhuan = false;
                        handler.removeCallbacksAndMessages(null);

                        break;
                    case MotionEvent.ACTION_CANCEL://取消
                        Log.i("--","ACTION_CANCEL");
                        isTiaoZhuan = false;
                        handler.sendEmptyMessageDelayed(0,2000);
                        break;
                    case MotionEvent.ACTION_UP://抬起
                        Log.i("--","ACTION_UP");
                        if (isTiaoZhuan){
                            Toast.makeText(context,"跳转页面",Toast.LENGTH_SHORT).show();

                            /*Intent intent = new Intent();

                            context.startActivity();*/
                        }
                        handler.sendEmptyMessageDelayed(0,2000);

                        break;
                }

                //自己处理触摸事件....如果当前位置返回了true,,,点击事件将不会执行,,,表示动作自己处理,不会传递
                return true;
            }
        });

        //添加到容器
        container.addView(imageView);

        return imageView;
    }

    @Override
    public void destroyItem(ViewGroup container, int position, Object object) {

        container.removeView((View) object);
    }
}

TuPian 图片设置 图片需要添加依赖nostra

package com.example.demo13_01;

import android.app.Application;

import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;

/**
 * Created by My on 2017/9/12.
 */

public class TuPian extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        //创建默认的ImageLoader配置参数
        ImageLoaderConfiguration configuration = ImageLoaderConfiguration
                .createDefault(this);
        //Initialize ImageLoader with configuration.
        ImageLoader.getInstance().init(configuration);
    }
}

doc_select.xml设置小圆点及颜色

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <solid android:color="#ff0000"/>
    <corners android:radius="5dp"/>
    <size android:height="10dp" android:width="10dp"/>
</shape>