lunbotu

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MainActivity

package com.example.a13_lunbotu;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.support.v4.view.ViewPager;import android.support.v7.app.AppCompatActivity;import android.widget.ImageView;import android.widget.LinearLayout;import java.util.ArrayList;import java.util.List;public class MainActivity extends AppCompatActivity {    private ViewPager vp;    private LinearLayout ll;    private List<String> list;    private Handler handler=new Handler(){        @Override        public void handleMessage(Message msg) {            if (msg.what==0){                int currentItem=vp.getCurrentItem();                vp.setCurrentItem(currentItem);                handler.sendEmptyMessageDelayed(0,2000);            }        }    };    private MyAdapter adaper;    private List<ImageView> images;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        vp = (ViewPager) findViewById(R.id.vp);        ll = (LinearLayout) findViewById(R.id.ll);        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");        initDoc();        adaper = new MyAdapter(MainActivity.this,list,handler);        vp.setAdapter(adaper);        vp.setCurrentItem(list.size()*10000);        handler.sendEmptyMessageDelayed(0,2000);        vp.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {            @Override            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {            }            @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.doc_select);                    }else {                        images.get(i).setImageResource(R.drawable.doc_select_n);                    }                }            }            @Override            public void onPageScrollStateChanged(int state) {            }        });    }    private void initDoc() {        images = new ArrayList<>();        ll.removeAllViews();        for (int i=0;i<list.size();i++){            ImageView imageView = new ImageView(MainActivity.this);            if (i==0){                imageView.setImageResource(R.drawable.doc_select);            }else {                imageView.setImageResource(R.drawable.doc_select_n);            }            images.add(imageView);            LinearLayout.LayoutParams params=new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,LinearLayout.LayoutParams.WRAP_CONTENT);            params.setMargins(5,0,5,0);            ll.addView(imageView,params);        }    }}

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MyAdapter

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package com.example.a13_lunbotu;import android.content.Context;import android.os.Handler;import android.support.v4.view.PagerAdapter;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 com.nostra13.universalimageloader.core.ImageLoaderConfiguration;import java.util.List;/** * Created by lenovo on 2017/9/13. */public class MyAdapter extends PagerAdapter {    Context context;    List<String> list;    Handler handler;    public MyAdapter(Context context, List<String> list, Handler handler) {        this.context=context;        this.list=list;        this.handler=handler;        ImageLoader.getInstance().init(ImageLoaderConfiguration.createDefault(context));    }    @Override    public int getCount() {        return Integer.MAX_VALUE;    }    @Override    public boolean isViewFromObject(View view, Object object) {        return view==object;    }    @Override    public Object instantiateItem(final ViewGroup container, int position) {        ImageView iv=new ImageView(context);        iv.setScaleType(ImageView.ScaleType.FIT_XY);        ImageLoader.getInstance().displayImage(list.get(position%list.size()),iv);        iv.setOnTouchListener(new View.OnTouchListener() {            @Override            public boolean onTouch(View view, MotionEvent motionEvent) {                boolean isTiaoZhuan=true;                switch (motionEvent.getAction()){                    case MotionEvent.ACTION_DOWN:                        handler.removeCallbacksAndMessages(null);                        break;                    case MotionEvent.ACTION_MOVE:                        isTiaoZhuan=false;                        handler.removeCallbacksAndMessages(null);                        break;                    case MotionEvent.ACTION_CANCEL:                        isTiaoZhuan=false;                        handler.sendEmptyMessageDelayed(0,2000);                        break;                    case MotionEvent.ACTION_UP:                        if (isTiaoZhuan){                            Toast.makeText(context,"页面跳转",Toast.LENGTH_SHORT).show();                        }                        handler.sendEmptyMessageDelayed(0,2000);                        break;                }                return true;            }        });        container.addView(iv);        return iv;    }    @Override    public void destroyItem(ViewGroup container, int position, Object object) {        container.removeView((View) object);    }}
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ImageloaderUtil
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package com.example.a13_lunbotu;import android.content.Context;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.QueueProcessingType;import com.nostra13.universalimageloader.core.decode.BaseImageDecoder;import com.nostra13.universalimageloader.core.download.BaseImageDownloader;import com.nostra13.universalimageloader.utils.StorageUtils;import java.io.File;/** * @author Dash * @date 2017/9/12 * @description: */public class ImageloaderUtil {    public static void initConfig(Context context) {        //配置        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                .imageDecoder(new BaseImageDecoder(true)) // default                .defaultDisplayImageOptions(DisplayImageOptions.createSimple()) // default                .writeDebugLogs() // 打印debug log                .build(); //开始构建        ImageLoader.getInstance().init(config);    }}
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BaseApplication
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package com.example.a13_lunbotu;import android.app.Application;/** * Created by lenovo on 2017/9/13. */public class BaseApplication extends Application {    @Override    public void onCreate() {        super.onCreate();        ImageloaderUtil.initConfig(this);    }}

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