自定义轮播imageLayout

AutoBanner
package com.bwie.autobanner;

import android.content.Context;
import android.graphics.Bitmap;
import android.os.Handler;
import android.os.Message;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.LinearLayout;

import com.nostra13.universalimageloader.cache.disc.impl.UnlimitedDiskCache;
import com.nostra13.universalimageloader.cache.disc.naming.HashCodeFileNameGenerator;
import com.nostra13.universalimageloader.cache.memory.impl.LruMemoryCache;
import com.nostra13.universalimageloader.core.DisplayImageOptions;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;
import com.nostra13.universalimageloader.core.assist.ImageScaleType;
import com.nostra13.universalimageloader.core.assist.QueueProcessingType;
import com.nostra13.universalimageloader.core.display.SimpleBitmapDisplayer;
import com.nostra13.universalimageloader.core.download.BaseImageDownloader;
import com.nostra13.universalimageloader.utils.StorageUtils;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

public class AutoBanner extends FrameLayout {
    private ViewPager viewPager;
    private LinearLayout linearLayout;
    private List<String> list;
    private int time = 2;
    private Handler handler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            if (msg.what == 0) {
                //viewPager显示下一页
                viewPager.setCurrentItem(viewPager.getCurrentItem() + 1);
                //再次发送延时消息
                handler.sendEmptyMessageDelayed(0, time * 1000);
            }
        }
    };
    private ArrayList<ImageView> images;
    private OnBannerClickListner bannerClickListner;

    public AutoBanner(@NonNull Context context) {
        super(context);
        init();
    }

    public AutoBanner(@NonNull Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public AutoBanner(@NonNull Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init();
    }

    /**
     * 对外提供设置时间
     */
    public void setTimeSeconds(int time) {
        this.time = time;
    }

    /**
     * 初始化的方法,,,加载布局
     */
    private void init() {
        //初始化imageLoader
        ImageLoaderUtil.init(getContext());
        View view = View.inflate(getContext(), R.layout.custom_banner_layout, this);
        //找到控件
        viewPager = view.findViewById(R.id.view_pager);
        linearLayout = view.findViewById(R.id.linear_layout);
    }

    /**
     * 对外提供设置数据的方法
     */
    public void setImageUrl(List<String> list) {
        this.list = list;
        if (list == null) {
            return;
        }
        //设置适配器
        MyAdapter myAdapter = new MyAdapter(getContext(), list);
        //设置适配器
        viewPager.setAdapter(myAdapter);
        initDoc(list);
        //2.手动的可以无限滑动
        viewPager.setCurrentItem(list.size() * 100000);//设置当前展示中间某个足够大的位置
        handler.sendEmptyMessageDelayed(0, time * 1000);//发送一个延时的空消息
        //viewPage设置监听事件
        viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
            @Override
            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {

            }

            /**
             * 当选中某个页面的时候,把当前的小圆点背景变成绿色
             * @param position
             */
            @Override
            public void onPageSelected(int position) {
                for (int i = 0; i < images.size(); i++) {
                    if (i == position % images.size()) {
                        images.get(i).setImageResource(R.drawable.shape_01);
                    } else {
                        images.get(i).setImageResource(R.drawable.shape_02);
                    }
                }
            }

            @Override
            public void onPageScrollStateChanged(int state) {

            }
        });
    }

    /**
     * 动态添加小圆点
     *
     * @param list
     */
    private void initDoc(List<String> list) {
        //1.需要一个集合记录一下小圆点的imageView控件
        images = new ArrayList<ImageView>();
        //2...linearLayout上面的视图清空一下再去添加
        linearLayout.removeAllViews();
        for (int i = 0; i < list.size(); i++) {
            ImageView imageView = new ImageView(getContext());
            if (i == 0) {
                imageView.setImageResource(R.drawable.shape_01);
            } else {
                imageView.setImageResource(R.drawable.shape_02);
            }
            //添加到集合去
            images.add(imageView);
            //添加到线性布局上
            //这是布局参数,,刚开始小圆点之间没有距离,所以使用java代码指定宽度高度,并且指定小圆点之间的距离
            LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
            params.setMargins(5, 0, 5, 0);
            linearLayout.addView(imageView, params);
        }
    }

    private class MyAdapter extends PagerAdapter {
        Context context;
        List<String> list;

        public MyAdapter(Context context, List<String> 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;
        }

        /**
         * viewPager具有预加载,默认的前后加载一页,,,默认的容器里面最多三页
         *
         * @param container
         * @param position
         * @return
         */
        @Override
        public Object instantiateItem(ViewGroup container, final int position) {
            //1.把这个当前展示的视图添加到容器中...container
            ImageView imageView = new ImageView(context);
            //..........使图片平铺整个imageView控件
            imageView.setScaleType(ImageView.ScaleType.FIT_XY);
            //imageLoader加载图片到这个imageView控件上
            ImageLoader.getInstance().displayImage(list.get(position % list.size()), imageView, ImageLoaderUtil.getDefaultOption());
            //给imageView设置触摸的监听事件
            imageView.setOnTouchListener(new OnTouchListener() {
                @Override
                public boolean onTouch(View view, MotionEvent motionEvent) {
                    int action = motionEvent.getAction();//获取手指的动作
                    switch (action) {
                        case MotionEvent.ACTION_DOWN://按下的动作...应该取消发送消息的操作
                            handler.removeCallbacksAndMessages(null);
                            break;
                        case MotionEvent.ACTION_MOVE://移动的动作
                            handler.removeCallbacksAndMessages(null);
                            break;
                        case MotionEvent.ACTION_CANCEL://取消
                            //重新发送
                            handler.sendEmptyMessageDelayed(0, time * 1000);
                            break;
                        case MotionEvent.ACTION_UP://抬起的动作
                            handler.sendEmptyMessageDelayed(0, time * 1000);
                            break;
                    }
                    return false;
                }
            });
            imageView.setOnClickListener(new OnClickListener() {
                @Override
                public void onClick(View view) {
                    bannerClickListner.onBannerClick(position % list.size());
                }
            });
            container.addView(imageView);//添加到容器
            //2.把当前展示的视图返回
            return imageView;
        }

        @Override
        public void destroyItem(ViewGroup container, int position, Object object) {
            //销毁视图
            container.removeView((View) object);
        }
    }

    private static class ImageLoaderUtil {
        /**
         * 初始化
         *
         * @param context
         */
        public static void init(Context context) {
            File cacheDir = StorageUtils.getCacheDirectory(context);  //缓存文件夹路径
            ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(context)
                    .threadPoolSize(3) // default  线程池内加载的数量
                    .threadPriority(Thread.NORM_PRIORITY - 2) // default 设置当前线程的优先级
                    .tasksProcessingOrder(QueueProcessingType.FIFO) // default
                    .denyCacheImageMultipleSizesInMemory()
                    .memoryCache(new LruMemoryCache(2 * 1024 * 1024)) //可以通过自己的内存缓存实现
                    .memoryCacheSize(2 * 1024 * 1024)  // 内存缓存的最大值
                    .memoryCacheSizePercentage(13) // default
                    .diskCache(new UnlimitedDiskCache(cacheDir)) // default 可以自定义缓存路径
                    .diskCacheSize(50 * 1024 * 1024) // 50 Mb sd卡(本地)缓存的最大值
                    .diskCacheFileCount(100)  // 可以缓存的文件数量
                    // default为使用HASHCODE对UIL进行加密命名， 还可以用MD5(new Md5FileNameGenerator())加密
                    .diskCacheFileNameGenerator(new HashCodeFileNameGenerator())
                    .imageDownloader(new BaseImageDownloader(context)) // default
                    .defaultDisplayImageOptions(DisplayImageOptions.createSimple()) // default
                    .writeDebugLogs() // 打印debug log
                    .build(); //开始构建
            //关键初始化的代码
            ImageLoader.getInstance().init(config);
        }

        public static DisplayImageOptions getDefaultOption() {
            DisplayImageOptions options = new DisplayImageOptions.Builder()
                    .showImageOnLoading(R.mipmap.ic_launcher) // 设置图片下载期间显示的图片
                    .showImageForEmptyUri(R.mipmap.ic_launcher) // 设置图片Uri为空或是错误的时候显示的图片
                    .showImageOnFail(R.mipmap.ic_launcher) // 设置图片加载或解码过程中发生错误显示的图片
                    .resetViewBeforeLoading(true)  // default 设置图片在加载前是否重置、复位
                    .cacheInMemory(true) // default  设置下载的图片是否缓存在内存中
                    .cacheOnDisk(true) // default  设置下载的图片是否缓存在SD卡中
                    .considerExifParams(true) // default
                    .imageScaleType(ImageScaleType.IN_SAMPLE_POWER_OF_2) // default 设置图片以如何的编码方式显示
                    .bitmapConfig(Bitmap.Config.ARGB_8888) // default 设置图片的解码类型
                    .displayer(new SimpleBitmapDisplayer()) // default  还可以设置圆角图片new RoundedBitmapDisplayer(20)
                    .build();
            return options;
        }
    }

    public void setOnBannerClickListner(OnBannerClickListner bannerClickListner) {
        this.bannerClickListner = bannerClickListner;
    }

    /**
     * 点击的接口
     */
    public interface OnBannerClickListner {
        public void onBannerClick(int position);
    }
}
_____________________________________________________________________________
MainActivity
package com.bwie.autobanner;

import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.widget.Toast;

import com.google.gson.Gson;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

public class MainActivity extends AppCompatActivity {
    private int time = 100;
    private AutoBanner customBanner;
    private List<String> list;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        customBanner = (AutoBanner) findViewById(R.id.custom_bannner);
        customBanner.setTimeSeconds(3);
        getDataFromNet();
    }

    private void getDataFromNet() {
        //http://120.27.23.105/ad/getAd
        //1.创建一个okhttp客户端对象
        OkHttpClient okHttpClient = new OkHttpClient();
        //2.通过请求的构建器来创建一个请求对象,并指定请求的url地址
        Request request = new Request.Builder()
                .url("http://120.27.23.105/ad/getAd")
                .build();
        //3.客户端调用请求
        Call call = okHttpClient.newCall(request);
        call.enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                e.printStackTrace();
            }

            @Override
            public void onResponse(Call call, final Response response) throws IOException {
                if (response.isSuccessful()) {
                    final String string = response.body().string();//耗时,子线程获取
                    runOnUiThread(new Runnable() {//主线程
                        @Override
                        public void run() {
                            Log.i("---+++", string);
                            BannerBean bannerBean = new Gson().fromJson(string, BannerBean.class);
                            final List<BannerBean.DataBean> data = bannerBean.getData();
                            list = new ArrayList<>();
                            for (int i = 0; i < data.size(); i++) {
                                list.add(data.get(i).getIcon());
                            }
                            customBanner.setImageUrl(list);
                            //设置点击事件
                            customBanner.setOnBannerClickListner(new AutoBanner.OnBannerClickListner() {
                                @Override
                                public void onBannerClick(int position) {
                                    //Toast.makeText(MainActivity.this,"点击了",Toast.LENGTH_SHORT).show();
                                    //判断
                                    BannerBean.DataBean dataBean = data.get(position);
                                    if (dataBean.getType() == 0) {//跳转到详情
                                        Intent intent = new Intent(MainActivity.this, SecondActivity.class);
                                        intent.putExtra("url", dataBean.getUrl());
                                        startActivity(intent);
                                    } else if (dataBean.getType() == 1) {
                                        Toast.makeText(MainActivity.this, "我要跳转到商品详情页", Toast.LENGTH_SHORT).show();
                                    }
                                }
                            });
                        }
                    });
                }
            }
        });
    }
//
//    /**
//     * C.请求权限的结果....可以获取到用户是否允许了权限
//     */
//    @TargetApi(23)
//    @Override
//    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
//        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
//        if (requestCode == 1001) {
//            //grantResults用户允许权限的返回值....数组里面放的是用户是否允许权限
//            //PackageManager.PERMISSION_GRANTED允许权限
//            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
//                getDataFromNet();
//            } else {
//                Toast.makeText(MainActivity.this, "拒绝", Toast.LENGTH_SHORT).show();
//            }
//        }
//    }

}
___________--____________--------------------------------------------------------------------
SecondActivity
package com.bwie.autobanner;

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

public class SecondActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_second);
        String url = getIntent().getStringExtra("url");
        WebView webView = (WebView) findViewById(R.id.web_view);
        webView.loadUrl(url);
        webView.setWebViewClient(new WebViewClient());
        WebSettings settings = webView.getSettings();
        settings.setJavaScriptCanOpenWindowsAutomatically(true);
        settings.setJavaScriptEnabled(true);
    }
}
________-----------------------------------------
布局
<com.bwie.autobanner.AutoBanner
    android:id="@+id/custom_bannner"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"/>
____________--------------------------------------------------------------
<WebView
    android:id="@+id/web_view"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
</WebView>
-----------------------------------------------------------------------
<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="10dp"
    android:orientation="horizontal">
---------------------------------------------------------------------------
小圆点
1
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <solid android:color="#00ff00"/>
    <corners android:radius="10dp"/>
    <size
        android:width="10dp"
        android:height="10dp"/>
</shape>
2
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <solid android:color="#ff0000"/>
    <corners android:radius="10dp"/>
    <size
        android:width="10dp"
        android:height="10dp"/>
</shape>