地图定位+缓存图片

1.使用Gilde进行缓存

package text.kao.com.yk_demoa1.utils;

import android.content.Context;
import android.os.Looper;
import android.text.TextUtils;

import com.bumptech.glide.Glide;
import com.bumptech.glide.load.engine.cache.ExternalCacheDiskCacheFactory;
import com.bumptech.glide.load.engine.cache.InternalCacheDiskCacheFactory;

import java.io.File;
import java.math.BigDecimal;

/**
 * 类的用途：
 * 作者：dell
 * 时间： 2017/5/1 21:02
 */

public class GildeUtile {

    private static GildeUtile inst =  new GildeUtile();
    private GildeUtile() {}
    //获取对象
    public static GildeUtile getInstance() {
        return inst;
    }

    /**
     * 清除图片磁盘缓存
     */
    public void clearImageDiskCache(final Context context) {
        try {
            if (Looper.myLooper() == Looper.getMainLooper()) {
                new Thread(new Runnable() {
                    @Override
                    public void run() {
                        Glide.get(context).clearDiskCache();
// BusUtil.getBus().post(new GlideCacheClearSuccessEvent());
                    }
                }).start();
            } else {
                Glide.get(context).clearDiskCache();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 清除图片内存缓存
     */
    public void clearImageMemoryCache(Context context) {
        try {
            if (Looper.myLooper() == Looper.getMainLooper()) { //只能在主线程执行
                Glide.get(context).clearMemory();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 清除图片所有缓存
     */
    public void clearImageAllCache(Context context) {
        clearImageDiskCache(context);
        clearImageMemoryCache(context);
        String ImageExternalCatchDir=context.getExternalCacheDir()+ ExternalCacheDiskCacheFactory.DEFAULT_DISK_CACHE_DIR;
        deleteFolderFile(ImageExternalCatchDir, true);
    }

    /**
     * 获取Glide造成的缓存大小
     *
     * @return CacheSize
     */
    public String getCacheSize(Context context) {
        try {
            return getFormatSize(getFolderSize(new File(context.getCacheDir() + "/"+ InternalCacheDiskCacheFactory.DEFAULT_DISK_CACHE_DIR)));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return "";
    }

    /**
     * 获取指定文件夹内所有文件大小的和
     *
     * @param file file
     * @return size
     * @throws Exception
     */
    private long getFolderSize(File file) throws Exception {
        long size = 0;
        try {
            File[] fileList = file.listFiles();
            for (File aFileList : fileList) {
                if (aFileList.isDirectory()) {
                    size = size + getFolderSize(aFileList);
                } else {
                    size = size + aFileList.length();
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return size;
    }

    /**
     * 删除指定目录下的文件，这里用于缓存的删除
     *
     * @param filePath filePath
     * @param deleteThisPath deleteThisPath
     */
    private void deleteFolderFile(String filePath, boolean deleteThisPath) {
        if (!TextUtils.isEmpty(filePath)) {
            try {
                File file = new File(filePath);
                if (file.isDirectory()) {
                    File files[] = file.listFiles();
                    for (File file1 : files) {
                        deleteFolderFile(file1.getAbsolutePath(), true);
                    }
                }
                if (deleteThisPath) {
                    if (!file.isDirectory()) {
                        file.delete();
                    } else {
                        if (file.listFiles().length == 0) {
                            file.delete();
                        }
                    }
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * 格式化单位
     *
     * @param size size
     * @return size
     */
    private static String getFormatSize(double size) {

        double kiloByte = size / 1024;
        if (kiloByte < 1) {
            return size + "Byte";
        }

        double megaByte = kiloByte / 1024;
        if (megaByte < 1) {
            BigDecimal result1 = new BigDecimal(Double.toString(kiloByte));
            return result1.setScale(2, BigDecimal.ROUND_HALF_UP).toPlainString() + "KB";
        }

        double gigaByte = megaByte / 1024;
        if (gigaByte < 1) {
            BigDecimal result2 = new BigDecimal(Double.toString(megaByte));
            return result2.setScale(2, BigDecimal.ROUND_HALF_UP).toPlainString() + "MB";
        }

        double teraBytes = gigaByte / 1024;
        if (teraBytes < 1) {
            BigDecimal result3 = new BigDecimal(Double.toString(gigaByte));
            return result3.setScale(2, BigDecimal.ROUND_HALF_UP).toPlainString() + "GB";
        }
        BigDecimal result4 = new BigDecimal(teraBytes);

        return result4.setScale(2, BigDecimal.ROUND_HALF_UP).toPlainString() + "TB";
    }
}

2.main

package text.kao.com.yk_demoa1;

import android.content.Intent;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;

import com.bumptech.glide.Glide;
import com.google.gson.Gson;
import com.nostra13.universalimageloader.cache.disc.DiskCache;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.squareup.okhttp.Call;
import com.squareup.okhttp.Callback;
import com.squareup.okhttp.OkHttpClient;
import com.squareup.okhttp.Request;
import com.squareup.okhttp.Response;

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


import text.kao.com.yk_demoa1.activity.NextActivity;
import text.kao.com.yk_demoa1.adapter.MyAdapter;
import text.kao.com.yk_demoa1.bean.Bean;
import text.kao.com.yk_demoa1.utils.GildeUtile;
import text.kao.com.yk_demoa1.utils.MyCallBack;
import text.kao.com.yk_demoa1.utils.OkHttoUtils;

public class MainActivity extends AppCompatActivity {
     String url="http://www.yulin520.com/a2a/impressApi/news/mergeList?sign=C7548DE604BCB8A17592EFB9006F9265&pageSize=10&gender=2&ts=1871746850&page=1";
    private RecyclerView rv;
    private MyAdapter adapter;
    private Handler handler=new Handler(){
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            if(msg.what==0){
                String s= (String) msg.obj;
                //进行解析
                Gson gson=new Gson();
                Bean bean = gson.fromJson(s, Bean.class);
                List list = bean.getData();
                //设置数据
                rv.setLayoutManager(new LinearLayoutManager(MainActivity.this,RecyclerView.VERTICAL,false));
                adapter = new MyAdapter(MainActivity.this,list);
                rv.setAdapter(adapter);
            }
        }
    };
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
         initViews();
    }

    private void initViews() {
        rv = (RecyclerView) findViewById(R.id.rv);
        TextView dw= (TextView) findViewById(R.id.dw_text);
        TextView delete= (TextView) findViewById(R.id.delete_text);
        DiskCache diskCache = ImageLoader.getInstance().getDiskCache();
        File file = diskCache.getDirectory();
        long m = file.length() / 1024 / 1024;
        String size = GildeUtile.getInstance().getCacheSize(MainActivity.this);
        delete.setText(size+"KB");

        //解析数据
        getDatas();

        //删除缓存
        delete.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                /*ImageLoader.getInstance().clearDiskCache();
                ImageLoader.getInstance().clearMemoryCache();*/
                GildeUtile.getInstance().clearImageAllCache(MainActivity.this);
                GildeUtile.getInstance().clearImageMemoryCache(MainActivity.this);
            }
        });
        dw.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //进行跳转
                Intent in=new Intent(MainActivity.this,NextActivity.class);
                startActivity(in);
            }
        });

    }

    private void getDatas() {

        OkHttpClient client=new OkHttpClient();
        Request request=new Request.Builder().url(url).build();
        Call call = client.newCall(request);
         call.enqueue(new Callback() {
             @Override
             public void onFailure(Request request, IOException e) {

             }

             @Override
             public void onResponse(Response response) throws IOException {
                 String string = response.body().string();
                 Message message = handler.obtainMessage(0, string);
                 handler.sendMessage(message);
             }
         });
    }
}

3.适配器

package text.kao.com.yk_demoa1.adapter;

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import com.bumptech.glide.Glide;
import com.nostra13.universalimageloader.core.ImageLoader;

import java.util.List;

import text.kao.com.yk_demoa1.MainActivity;
import text.kao.com.yk_demoa1.R;
import text.kao.com.yk_demoa1.bean.Bean;
import text.kao.com.yk_demoa1.utils.ImageUtils;

import static android.R.id.list;

/**
 * Created by lenovo on 2017/5/1.
 */

public class MyAdapter extends RecyclerView.Adapter {
   private  Context context;
    private List list;
    public MyAdapter(Context context, List list) {
        this.context=context;
        this.list=list;
    }

    @Override
    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(context).inflate(R.layout.list_layout, parent, false);
        return new MyViewHolder(view);
    }

    @Override
    public void onBindViewHolder(MyViewHolder holder, int position) {
        holder.age.setText(list.get(position).getUserAge()+"岁");
        holder.hobby.setText(list.get(position).getContent());
        holder.name.setText(list.get(position).getUserName());
        holder.zw.setText(list.get(position).getOccupation());
       // ImageLoader.getInstance().displayImage(list.get(position).getImg(),holder.iv, ImageUtils.getImage());
        Glide.with(context).load(list.get(position).getImg()).into(holder.iv);

    }
    @Override
    public int getItemCount() {
        return list.size();
    }

    class MyViewHolder extends RecyclerView.ViewHolder{

        private final TextView name;
        private final TextView hobby;
        private final TextView age;
        private final TextView zw;
        private final ImageView iv;

        public MyViewHolder(View itemView) {
            super(itemView);
            //找控件
            name = (TextView) itemView.findViewById(R.id.name_text);
            hobby = (TextView) itemView.findViewById(R.id.hobby_text);
            age = (TextView) itemView.findViewById(R.id.age_text);
            zw = (TextView) itemView.findViewById(R.id.zw_text);
            iv = (ImageView) itemView.findViewById(R.id.iv);

        }
    }
}

4.NextActvity

package text.kao.com.yk_demoa1.activity;

import android.os.Bundle;
import android.os.PersistableBundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.widget.TextView;

import com.baidu.location.BDLocation;
import com.baidu.location.BDLocationListener;
import com.baidu.location.LocationClient;
import com.baidu.location.LocationClientOption;
import com.baidu.location.Poi;
import com.baidu.mapapi.map.BaiduMap;
import com.baidu.mapapi.map.MapStatus;
import com.baidu.mapapi.map.MapStatusUpdateFactory;
import com.baidu.mapapi.map.MapView;
import com.baidu.mapapi.map.MyLocationData;
import com.baidu.mapapi.model.LatLng;

import java.util.List;

import text.kao.com.yk_demoa1.R;

/**
 * Created by lenovo on 2017/5/1.
 */

public class NextActivity extends AppCompatActivity {

    private MapView mapView;

    private TextView tv_location;
    public LocationClient mLocationClient = null;
    public BDLocationListener myListener = new MyLocationListener();
    private BaiduMap baiduMap;
    private boolean isFirstLoc = true;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

      setContentView(R.layout.next_layout);
        //找控件
        mapView = (MapView) findViewById(R.id.mv);
        //获取地图
        baiduMap = mapView.getMap();
        //开启定位图层
        baiduMap.setMyLocationEnabled(true);
        tv_location = (TextView) findViewById(R.id.tv_location);
        //初始化定位对象  声明LocationClient类
        mLocationClient = new LocationClient(getApplicationContext());

        //注册监听函数
        mLocationClient.registerLocationListener(myListener);

        initLocation();
        mLocationClient.start();


    }

    private void initLocation() {
        LocationClientOption option = new LocationClientOption();
        option.setLocationMode(LocationClientOption.LocationMode.Hight_Accuracy);
        //可选，默认高精度，设置定位模式，高精度，低功耗，仅设备

        option.setCoorType("bd09ll");
        //可选，默认gcj02，设置返回的定位结果坐标系

        int span = 1000;
        option.setScanSpan(span);
        //可选，默认0，即仅定位一次，设置发起定位请求的间隔需要大于等于1000ms才是有效的

        option.setIsNeedAddress(true);
        //可选，设置是否需要地址信息，默认不需要

        option.setOpenGps(true);
        //可选，默认false,设置是否使用gps

        option.setLocationNotify(true);
        //可选，默认false，设置是否当GPS有效时按照1S/1次频率输出GPS结果

        option.setIsNeedLocationDescribe(true);
        //可选，默认false，设置是否需要位置语义化结果，可以在BDLocation.getLocationDescribe里得到，结果类似于“在北京天安门附近”

        option.setIsNeedLocationPoiList(true);
        //可选，默认false，设置是否需要POI结果，可以在BDLocation.getPoiList里得到

        option.setIgnoreKillProcess(false);
        //可选，默认true，定位SDK内部是一个SERVICE，并放到了独立进程，设置是否在stop的时候杀死这个进程，默认不杀死

        option.SetIgnoreCacheException(false);
        //可选，默认false，设置是否收集CRASH信息，默认收集

        option.setEnableSimulateGps(false);
        //可选，默认false，设置是否需要过滤GPS仿真结果，默认需要

        mLocationClient.setLocOption(option);

    }

    public class MyLocationListener implements BDLocationListener {

        @Override
        public void onReceiveLocation(BDLocation location) {

            //获取定位结果
            StringBuffer sb = new StringBuffer(256);

            sb.append("time : ");
            sb.append(location.getTime());    //获取定位时间

            sb.append("\nerror code : ");
            sb.append(location.getLocType());    //获取类型类型

            sb.append("\nlatitude : ");
            sb.append(location.getLatitude());    //获取纬度信息

            sb.append("\nlontitude : ");
            sb.append(location.getLongitude());    //获取经度信息

            sb.append("\nradius : ");
            sb.append(location.getRadius());    //获取定位精准度
//---------------------将地图跟定位关联起来----------------------------------------
            MyLocationData locData = new MyLocationData.Builder()
                    .accuracy(location.getRadius())
                    // 此处设置开发者获取到的方向信息，顺时针0-360
                    .direction(100).latitude(location.getLatitude())
                    .longitude(location.getLongitude()).build();
            // 设置定位数据
            baiduMap.setMyLocationData(locData);

            if (isFirstLoc) {
                isFirstLoc = false;
                LatLng ll = new LatLng(location.getLatitude(),
                        location.getLongitude());
                MapStatus.Builder builder = new MapStatus.Builder();
                builder.target(ll).zoom(18.0f);
                baiduMap.animateMapStatus(MapStatusUpdateFactory.newMapStatus(builder.build()));
            }
//---------------------将地图跟定位关联起来----------------------------------------

            if (location.getLocType() == BDLocation.TypeGpsLocation) {

                // GPS定位结果
                sb.append("\nspeed : ");
                sb.append(location.getSpeed());    // 单位：公里每小时

                sb.append("\nsatellite : ");
                sb.append(location.getSatelliteNumber());    //获取卫星数

                sb.append("\nheight : ");
                sb.append(location.getAltitude());    //获取海拔高度信息，单位米

                sb.append("\ndirection : ");
                sb.append(location.getDirection());    //获取方向信息，单位度

                sb.append("\naddr : ");
                sb.append(location.getAddrStr());    //获取地址信息

                sb.append("\ndescribe : ");
                sb.append("gps定位成功");

            }  else if (location.getLocType() == BDLocation.TypeNetWorkLocation) {

                // 网络定位结果
                sb.append("\naddr : ");
                sb.append(location.getAddrStr());    //获取地址信息

                sb.append("\noperationers : ");
                sb.append(location.getOperators());    //获取运营商信息

                sb.append("\ndescribe : ");
                sb.append("网络定位成功");

            } else if (location.getLocType() == BDLocation.TypeOffLineLocation) {

                // 离线定位结果
                sb.append("\ndescribe : ");
                sb.append("离线定位成功，离线定位结果也是有效的");

            } else if (location.getLocType() == BDLocation.TypeServerError) {

                sb.append("\ndescribe : ");
                sb.append("服务端网络定位失败，可以反馈IMEI号和大体定位时间到[email protected]，会有人追查原因");

            } else if (location.getLocType() == BDLocation.TypeNetWorkException) {

                sb.append("\ndescribe : ");
                sb.append("网络不同导致定位失败，请检查网络是否通畅");

            } else if (location.getLocType() == BDLocation.TypeCriteriaException) {

                sb.append("\ndescribe : ");
                sb.append("无法获取有效定位依据导致定位失败，一般是由于手机的原因，处于飞行模式下一般会造成这种结果，可以试着重启手机");

            }

            sb.append("\nlocationdescribe : ");
            sb.append(location.getLocationDescribe());    //位置语义化信息

            final List list = location.getPoiList();    // POI数据
            if (list != null) {
                sb.append("\npoilist size = : ");
                sb.append(list.size());
                for (Poi p : list) {
                    sb.append("\npoi= : ");
                    sb.append(p.getId() + " " + p.getName() + " " + p.getRank());
                }

            }
            //此方法运行在子线程
            runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    tv_location.setText(list.get(2).getName());
                }
            });
            Log.i("BaiduLocationApiDem", sb.toString() + ",目前位置：" + list.get(2).getName());
        }

        @Override
        public void onConnectHotSpotMessage(String s, int i) {

        }
    }

}

5.app

package text.kao.com.yk_demoa1.app;

import android.app.Application;

import com.baidu.mapapi.SDKInitializer;
import com.nostra13.universalimageloader.cache.disc.naming.Md5FileNameGenerator;
import com.nostra13.universalimageloader.cache.memory.impl.UsingFreqLimitedMemoryCache;
import com.nostra13.universalimageloader.cache.memory.impl.WeakMemoryCache;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;

/**
 * Created by lenovo on 2017/5/1.
 */

public class MyApp extends Application {
    @Override
    public void onCreate() {
        super.onCreate();

        ImageLoaderConfiguration imc=new ImageLoaderConfiguration.Builder(getApplicationContext()).
                 diskCacheFileNameGenerator(new Md5FileNameGenerator())
                .denyCacheImageMultipleSizesInMemory()
                .memoryCache(new UsingFreqLimitedMemoryCache(2* 1024 * 1024))
                .diskCacheSize(10*1024*1024)
                .memoryCache(new WeakMemoryCache())
                .build();
        ImageLoader.getInstance().init(imc);
        SDKInitializer.initialize(getApplicationContext());

    }
}