自定义ViewPager进行轮播图片

最新推荐文章于 2024-06-16 19:18:32 发布

MissGentlemen

最新推荐文章于 2024-06-16 19:18:32 发布

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本文链接：https://blog.youkuaiyun.com/MissGentlemen/article/details/78955677

版权

需要依赖

compile 'com.github.bumptech.glide:glide:3.7.0'
compile 'com.android.support:support-v4:26.1.0'

compile 'com.google.code.gson:gson:2.8.2'

需要权限

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

MainActivity

package com.lixinyang.myadapter;

import android.annotation.SuppressLint;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.widget.Toast;

import com.google.gson.Gson;
import com.lixinyang.myadapter.Bean.image;
import com.lixinyang.myadapter.Views.MyViewPage;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.List;

public class MainActivity extends AppCompatActivity {
     String path="http://120.27.23.105/ad/getAd";
    @SuppressLint("HandlerLeak")
    Handler handler = new Handler(){
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            final List<image.DataBean> list= (List<image.DataBean>) msg.obj;
            viewById.GetAdapter(MainActivity.this,list);
            viewById.cc(new MyViewPage.aa() {
                @Override
                public void bb(int position) {
                    if(list.get(position).getType()==0){
                        String url = list.get(position).getUrl();
                        Intent intent = new Intent(MainActivity.this,Main2Activity.class);
                        intent.putExtra("url",url);
                        startActivity(intent);
                    }else{
                        Toast.makeText(MainActivity.this,"我要跳转到商品详情页",Toast.LENGTH_SHORT).show();
                    }
                }
            });
        }
    };
    private MyViewPage viewById;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        viewById = (MyViewPage) findViewById(R.id.mvp);
        getindata(path);
    }

    public void getindata(final String uri) {
        new Thread(){
            @Override
            public void run() {
                super.run();
 //               URL u = null;
                try {
                    URL u = new URL(uri);
                    HttpURLConnection con = (HttpURLConnection) u.openConnection();
                    con.setConnectTimeout(3000);
                    if (con.getResponseCode()==200){
                        InputStream inputStream = con.getInputStream();
                        String data = in2String(inputStream);
                        //Log.d(TAG, "数据-----" + data);
                        //解析数据
                        Gson gson = new Gson();
                        image bean = gson.fromJson(data, image.class);
                        //Log.d(TAG, "gson----" + bean);
                        List<image.DataBean> data1 = bean.getData();
                       // Log.d(TAG, "获取集合" + data1+"jiexiwangi");
                        //发送到主线程Hanlder
                        Message message = new Message();
                        message.obj = data1;
                        handler.sendMessage(message);
                    }
                } catch (MalformedURLException e) {
                    e.printStackTrace();
                } catch (IOException e) {
                    e.printStackTrace();
                }

            }
        }.start();
    }
    public String in2String(InputStream is) throws IOException {
        StringBuffer buffer = new StringBuffer();
        BufferedReader br = new BufferedReader(new InputStreamReader(is));
        String len = "";
        while((len = br.readLine())!=null){
            buffer.append(len);
        }


        return buffer.toString();
    }

}

Main2Activity

package com.lixinyang.myadapter;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;

/**
 * author:Created by WangZhiQiang on 2018/1/2.
 */

public class Main2Activity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
        WebView webView = (WebView) findViewById(R.id.webView);
        String url = getIntent().getStringExtra("url");
        webView.loadUrl(url);
        //设置
        webView.setWebViewClient(new WebViewClient());//不去跳转到浏览器
        WebSettings settings = webView.getSettings();//获得设置页面的权限
        settings.setJavaScriptCanOpenWindowsAutomatically(true);//s设置javascript弹窗
        settings.setJavaScriptEnabled(true);//是安卓支持js脚本
    }
}

自定义MyViewPage

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    android:id="@+id/rl"
    xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
    android:layout_height="300px">
<android.support.v4.view.ViewPager
    android:layout_width="match_parent"
    android:layout_height="300px"
    android:id="@+id/vp"></android.support.v4.view.ViewPager>
    <LinearLayout
        android:orientation="horizontal"
        android:layout_centerHorizontal="true"
        android:id="@+id/ly"
        android:layout_alignParentBottom="true"
        android:layout_width="wrap_content"
        android:layout_height="40px"></LinearLayout>
</RelativeLayout>
MainActivity.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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="com.lixinyang.myadapter.MainActivity">

    <com.lixinyang.myadapter.Views.MyViewPage
        android:id="@+id/mvp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"></com.lixinyang.myadapter.Views.MyViewPage>

</android.support.constraint.ConstraintLayout>
Main2Activity.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
    android:layout_height="match_parent">
<WebView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/webView"></WebView>
</android.support.constraint.ConstraintLayout>
自定义MyViewPage

package com.lixinyang.myadapter.Views;

import android.content.Context;
import android.os.Handler;
import android.os.Message;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;

import com.bumptech.glide.Glide;
import com.lixinyang.myadapter.Bean.image;
import com.lixinyang.myadapter.R;

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

/**
 * author:Created by WangZhiQiang on 2018/1/2.
 */

public class MyViewPage extends RelativeLayout {
    Handler handler = new Handler(){
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            viewPager.setCurrentItem(viewPager.getCurrentItem()+1);
            abc();
        }
    };
    private ViewPager viewPager;
    private LinearLayout ly;
    private aa a;

    public MyViewPage(Context context) {
        this(context,null);
    }

    public MyViewPage(Context context, AttributeSet attrs) {
        this(context, attrs,0);
    }


    public MyViewPage(final Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        View view = LayoutInflater.from(context).inflate(R.layout.activity_adapter, this, true);
        viewPager = view.findViewById(R.id.vp);
        ly = view.findViewById(R.id.ly);
    }
    public void GetAdapter(final Context context, final List<image.DataBean> list){
        MyAdapter myAdapter = new MyAdapter(context,list);
        viewPager.setAdapter(myAdapter);
        final List<ImageView> list1 = new ArrayList<ImageView>();
        for (int i = 0; i < list.size(); i++) {
            ImageView imageView = new ImageView(context);
            imageView.setBackgroundResource(R.drawable.selects);
            imageView.setId(i);
            list1.add(imageView);
            ly.addView(imageView);
        }
        list1.get(0).setSelected(true);
        abc();
        viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
            @Override
            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {

            }

            @Override
            public void onPageSelected(int position) {
                position = position%list1.size();
                for (int i = 0; i < list1.size(); i++) {
                    if(i==position){
                        list1.get(position).setSelected(true);
                    }else{
                        list1.get(i).setSelected(false);
                    }
                }
            }

            @Override
            public void onPageScrollStateChanged(int state) {

            }
        });
        /*viewPager.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View view) {
                //for (int i = 0; i < list.size(); i++) {
                    //if(i==view.getId()){
                       // Toast.makeText(context,"asdasd",Toast.LENGTH_SHORT).show();
                   // }
                //}
            }
        });*/
        //viewPager.
    }

    public void abc(){
        handler.sendEmptyMessageDelayed(0,1000);
    }
    class MyAdapter extends PagerAdapter{
        private final Context context;
        private final List<image.DataBean> list;

        public MyAdapter(Context context, List<image.DataBean> list){
            this.context = context;
            this.list = list;
        }
        @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) {
            position = position%list.size();
            ImageView imageView = new ImageView(context);
            //使用Glide加载图片
            Glide.with(context).load(list.get(position%list.size()).getIcon()).into(imageView);
            //加入容器
            container.addView(imageView);
            final int finalPosition = position;
            imageView.setOnClickListener(new OnClickListener() {
                @Override
                public void onClick(View view) {
                   a.bb(finalPosition);
                }
            });
            return imageView;
        }

        @Override
        public void destroyItem(ViewGroup container, int position, Object object) {
//            super.destroyItem(container, position, object);
            container.removeView((View) object);
        }
    }
    public interface aa{
        void bb(int position);
    }
    public void cc(aa a){
        this.a = a;
    }
}