如何使用百度地圖繪制實(shí)時(shí)路線以及最短線路規(guī)劃

最近在做百度地圖的實(shí)時(shí)路線繪制，發(fā)現(xiàn)一些問題，比如由于定位漂移帶來的路線繪制偏差，還有由于定位漂移，導(dǎo)致人未走動(dòng)時(shí)，也會(huì)繪制路線等。百度鷹眼的線路糾偏個(gè)人感覺很一般啊。而且有限漂移了兩百米的點(diǎn)他也沒有糾正過來。所以最后還是決定自己寫一個(gè)糾偏吧。而且百度地圖官方的dome和示例代碼真的很示例啊。然人摸不著頭腦。ok進(jìn)入正題，思路是這樣的，因?yàn)閷?shí)時(shí)繪制線路都是在室外，所以只采用gps定位，不采用無線網(wǎng)絡(luò)定位。這樣漂移一兩百米的點(diǎn)基本不會(huì)出現(xiàn)。第二當(dāng)人在等紅綠燈時(shí)，人是靜止的，但是定位有可能會(huì)漂移，所以這部分我們采用手機(jī)感應(yīng)器進(jìn)行判斷是否移動(dòng)。ok大體方向確定了，接下來就是進(jìn)行功能劃分然后開發(fā)了。功能模塊主要涉及以下幾點(diǎn)

需要項(xiàng)目源碼的請(qǐng)移步到此下載
http://download.csdn.net/detail/zero172/9588471

• 地圖定位
• 繪制當(dāng)前位置
• 獲取位置進(jìn)行糾偏
• 判斷是否移動(dòng)
• 繪制線路
• 線路規(guī)劃

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程序流程圖凸顯

Created with Rapha?l 2.2.0開始獲取gps位置不是第一個(gè)？不是前10個(gè)？手機(jī)是否處于運(yùn)動(dòng)？兩點(diǎn)間距離是否大于1米？兩點(diǎn)間距離是否小于90米？保存位置繪制線路拋棄位置保存位置yesnoyesnoyesnoyesnoyesno

下面是完整代碼

這里貼出的代碼是基于各位亦有一定百度地圖開發(fā)基礎(chǔ)為參照，如果看不懂可留下郵箱我每晚發(fā)送源代碼給各位,我是用jar包是3.7.3版的，各位如果使用其他版本的包，可能會(huì)出現(xiàn)百度地圖初始化失敗的現(xiàn)象。對(duì)我被坑過。

package com.example.baidutext;import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import java.util.List;import android.app.Activity; import android.app.AlertDialog; import android.app.AlertDialog.Builder; import android.app.ProgressDialog; import android.content.Context; import android.content.DialogInterface; import android.content.DialogInterface.OnClickListener; import android.content.Intent; import android.content.IntentFilter; import android.content.SharedPreferences; import android.content.SharedPreferences.Editor; import android.graphics.Color; import android.hardware.Sensor; import android.hardware.SensorManager; import android.os.Bundle; import android.os.PowerManager; import android.os.PowerManager.WakeLock; import android.view.Menu; import android.view.MenuItem; import android.widget.Toast;import com.baidu.location.BDLocation; import com.baidu.location.BDLocationListener; import com.baidu.location.LocationClient; import com.baidu.location.LocationClientOption; import com.baidu.mapapi.SDKInitializer; import com.baidu.mapapi.map.BaiduMap; import com.baidu.mapapi.map.BaiduMap.OnMapLongClickListener; import com.baidu.mapapi.map.BitmapDescriptor; import com.baidu.mapapi.map.BitmapDescriptorFactory; import com.baidu.mapapi.map.MapStatus; import com.baidu.mapapi.map.MapStatusUpdate; import com.baidu.mapapi.map.MapStatusUpdateFactory; import com.baidu.mapapi.map.MapView; import com.baidu.mapapi.map.MarkerOptions; import com.baidu.mapapi.map.OverlayOptions; import com.baidu.mapapi.map.PolylineOptions; import com.baidu.mapapi.model.LatLng; import com.baidu.mapapi.search.route.BikingRouteResult; import com.baidu.mapapi.search.route.DrivingRouteResult; import com.baidu.mapapi.search.route.OnGetRoutePlanResultListener; import com.baidu.mapapi.search.route.PlanNode; import com.baidu.mapapi.search.route.RoutePlanSearch; import com.baidu.mapapi.search.route.TransitRouteResult; import com.baidu.mapapi.search.route.WalkingRoutePlanOption; import com.baidu.mapapi.search.route.WalkingRouteResult; import com.baidu.mapapi.utils.DistanceUtil;public class MainActivity extends Activity {/*** 百度地圖視圖*/private MapView map_v=null;/*** 百度地圖管理器*/private BaiduMap BaiDuMap;// /**// * 位置管理器// */// private LocationManager locationManager;/*** 位置客戶端*/private LocationClient locationClient = null;/*** 獲取位置時(shí)間間隔單位(秒)*/private final int time= 1000*9;// /**// * 定位數(shù)據(jù) // */// private MyLocationData locData;/*** 構(gòu)建Marker圖標(biāo) */private BitmapDescriptor bitmap,StartBitmap,EndBitmap; /***判斷是否第一次定位*/private boolean isFirstLoc=true;/*** 是否處于路線規(guī)劃*/private boolean isGetRoute=false;/*** 是否獲取新路線*/private boolean isGetNewRoute=true;/*** 定位位置數(shù)據(jù)* 多線程在修改本數(shù)據(jù),需要增加一個(gè)鎖;*/private List<LatLng> pointList = new ArrayList<LatLng>();/** // * 判斷是否處于暫停 // */// private boolean isPause=false;/*** 描述地圖將要發(fā)生的變化*/protected MapStatusUpdate msUpdate = null;/*** 覆蓋物*/protected OverlayOptions overlay,StartOverlay,EndOverlay;/*** 路線覆蓋物*/private PolylineOptions polyline = null;/*** 手機(jī)加速度感應(yīng)器服務(wù)注冊(cè)*/private SensorManager sm = null;private Acc acc=new Acc();/*** 最大距離單位(米)*/private final Double MaxDistance=90.00;/*** 最小距離單位(米)*/private final Double MinDistance=2.0;/*** 電源鎖*/public static WakeLock wakeLock=null;private PowerReceiver powerReceiver = new PowerReceiver();/***最近位置信息*/private LatLng latLng;/*** 因距離太大丟失的點(diǎn)數(shù)*/private int LostLoc=0;/*** 第一次定位丟失的點(diǎn)數(shù)*/private int FLostLoc=0;/*** 程序名稱*/private final String APP_FOLDER_NAME = "LocationDemo";/*** 路線規(guī)劃監(jiān)聽*/private RoutePlanSearch mSearch;/*** 當(dāng)前位置,終點(diǎn)位置*/private LatLng ll,EndLL;/*** 路線規(guī)劃等待進(jìn)度框*/private ProgressDialog progressDialog;/*** 獲取位置距離常量*/private int constant=0;/* (non-Javadoc)* @see android.app.Activity#onCreate(android.os.Bundle)*/@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);sm = (SensorManager) getSystemService(SENSOR_SERVICE);SDKInitializer.initialize(getApplicationContext());// activityList.add(this);setContentView(R.layout.activity_main);init();//設(shè)置定位監(jiān)聽locationClient.registerLocationListener(new BDLocationListener(){@Overridepublic void onReceiveLocation(BDLocation location) {// TODO Auto-generated method stub// locData = new MyLocationData.Builder() // .accuracy(0) // // 此處設(shè)置開發(fā)者獲取到的方向信息，順時(shí)針0-360 // .direction(0).latitude(location.getLatitude()) // .longitude(location.getLongitude()).build(); // // 設(shè)置定位數(shù)據(jù) // BaiDuMap.setMyLocationData(locData); ll = new LatLng(location.getLatitude(),location.getLongitude());progressDialog.dismiss();if(isFirstLoc||isGetRoute){if(!isGetRoute){MapStatusUpdate u = MapStatusUpdateFactory.newLatLng(ll);BaiDuMap.animateMapStatus(u);}// MyLocationConfiguration config = new MyLocationConfiguration(LocationMode.NORMAL, true, bitmap);//普通（LocationMode.NORMAL）、跟隨（LocationMode.FOLLOWING）、羅盤（LocationMode.COMPASS）// BaiDuMap.setMyLocationConfigeration(config);isFirstLoc=false;if(constant<pointList.size()){if(DistanceUtil.getDistance(pointList.get(constant),ll)>DistanceUtil.getDistance(pointList.get(constant+1),ll)){save("距離: "+DistanceUtil.getDistance(pointList.get(constant+1),ll)+" 時(shí)間: "+getStringDate()+" 點(diǎn)數(shù): "+constant);if(DistanceUtil.getDistance(pointList.get(constant+1),ll)>100&&isGetNewRoute){IsGetNewRoute();}constant++;}else{save("距離: "+DistanceUtil.getDistance(pointList.get(constant),ll)+" 時(shí)間: "+getStringDate()+" 點(diǎn)數(shù): "+constant);if(DistanceUtil.getDistance(pointList.get(constant),ll)>100&&isGetNewRoute){IsGetNewRoute();}}}drawRealtimePoint(ll);}else{showRealtimeTrack(location);}}});locationClient.start();//路線規(guī)劃回調(diào)OnGetRoutePlanResultListener listener = new OnGetRoutePlanResultListener(){@Overridepublic void onGetBikingRouteResult(BikingRouteResult arg0) {// TODO Auto-generated method stub}@Overridepublic void onGetDrivingRouteResult(DrivingRouteResult arg0) {// TODO Auto-generated method stub}@Overridepublic void onGetTransitRouteResult(TransitRouteResult arg0) {// TODO Auto-generated method stub}@Overridepublic void onGetWalkingRouteResult(WalkingRouteResult WalkingRoute) {// TODO Auto-generated method stubif(WalkingRoute.getRouteLines()!=null){constant =0;isGetNewRoute=true;for(int i=0;i<WalkingRoute.getRouteLines().get(0).getAllStep().size();i++){pointList.addAll(WalkingRoute.getRouteLines().get(0).getAllStep().get(i).getWayPoints());}save("時(shí)間: "+getStringDate()+" 總點(diǎn)數(shù): "+pointList.size());}else // Toast.makeText(MainActivity.this, "獲取線路失敗", 3000).show();System.out.println("ccccccccccccccccccc");}};mSearch.setOnGetRoutePlanResultListener(listener);//長按地圖監(jiān)聽BaiDuMap.setOnMapLongClickListener(new OnMapLongClickListener() {@Overridepublic void onMapLongClick(LatLng arg0) {// TODO Auto-generated method stubEndLL=arg0;StartRoutePlan();}}); // mSearch.destroy();Toast.makeText(this, "正在定位....", 3000).show();}/*** 初始化資源*/protected void init(){map_v=(MapView)findViewById(R.id.bmapView);bitmap = BitmapDescriptorFactory.fromResource(R.drawable.map_d);StartBitmap= BitmapDescriptorFactory.fromResource(R.drawable.start_bitmap);EndBitmap= BitmapDescriptorFactory.fromResource(R.drawable.end_bitmap);// locationManager = (LocationManager) getSystemService(this.LOCATION_SERVICE);BaiDuMap=map_v.getMap();locationClient = new LocationClient(this);LocationClientOption option = new LocationClientOption();option.setOpenGps(true); //是否打開GPSoption.setCoorType("bd09ll"); //設(shè)置返回值的坐標(biāo)類型。bd09ll百度加密經(jīng)緯度坐標(biāo),bd09百度加密墨卡托坐標(biāo),gcj02國測局加密經(jīng)緯度坐標(biāo)option.setPriority(LocationClientOption.GpsOnly); //設(shè)置定位優(yōu)先級(jí),只取gps定位;option.setProdName(APP_FOLDER_NAME); //設(shè)置產(chǎn)品線名稱。option.setScanSpan(time); //設(shè)置定時(shí)定位的時(shí)間間隔。單位毫秒locationClient.setLocOption(option);BaiDuMap.setMapType(BaiduMap.MAP_TYPE_NORMAL);//普通地圖模式 ;MAP_TYPE_SATELLITE為衛(wèi)星地圖;MAP_TYPE_NONE空白地圖;BaiDuMap.setTrafficEnabled(false);//不開啟交通視圖;map_v.showZoomControls(false);//不開啟底部放大縮小 圖標(biāo);BaiDuMap.animateMapStatus(MapStatusUpdateFactory.zoomTo(18));//設(shè)置地圖縮放BaiDuMap.setMyLocationEnabled(true);//開啟定位圖層BaiDuMap.setMaxAndMinZoomLevel(18.0f,1.0f);mSearch = RoutePlanSearch.newInstance();progressDialog=new ProgressDialog(this);}@Overrideprotected void onStart() {// TODO Auto-generated method stubsuper.onStart();}@Overrideprotected void onDestroy() {// TODO Auto-generated method stubsuper.onDestroy();map_v.onDestroy();BaiDuMap.setMyLocationEnabled(false);locationClient.stop();map_v = null;releaseWakeLock();sm.unregisterListener(acc);mSearch.destroy();saveArray();}@Overrideprotected void onPause() {// TODO Auto-generated method stubsuper.onPause();map_v.onPause();}@Overridepublic boolean onMenuItemSelected(int featureId, MenuItem item) {// TODO Auto-generated method stubif(item.getItemId()==R.id.action_settings){progressDialog.setTitle("路線規(guī)劃");progressDialog.setMessage("正在清除路線請(qǐng)稍后。。");progressDialog.show();isGetRoute=false;if(pointList!=null||pointList.size()>0)pointList.clear();if(StartOverlay!=null)StartOverlay=null;if(EndOverlay!=null)EndOverlay=null;}return super.onMenuItemSelected(featureId, item);}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// TODO Auto-generated method stubreturn super.onCreateOptionsMenu(menu);}/** 將數(shù)據(jù)臨時(shí)保存到xml文件*/private boolean saveArray() { deleteXML();SharedPreferences sp= getSharedPreferences("lat", Context.MODE_APPEND); Editor mEdit1= sp.edit(); mEdit1.remove("Status_size");mEdit1.putInt("Status_size",pointList.size());for(int i=0;i<pointList.size();i++) { mEdit1.remove("lat_" + i); mEdit1.putString("lat_" + i,pointList.get(i).latitude+"");mEdit1.remove("lon_" + i); mEdit1.putString("lon_" + i,pointList.get(i).longitude+"");} return mEdit1.commit(); }@Overrideprotected void onResume() {// TODO Auto-generated method stubsuper.onResume();map_v.onResume();sm.registerListener(acc, Sensor.TYPE_ACCELEROMETER ,SensorManager.SENSOR_DELAY_NORMAL);acquireWakeLock();// if(latLng!=null)// drawRealtimePoint(latLng);}// /*// * 讀取xml文件存儲(chǔ)數(shù)據(jù);// * @param mContext// */// protected void loadArray(Context mContext) { // SharedPreferences mSharedPreference1=getSharedPreferences("lat", Context.MODE_PRIVATE); // // pointList.clear(); // int size = mSharedPreference1.getInt("Status_size", 0); //// for(int i=0;i<size;i++) {// Double lat1=Double.valueOf(mSharedPreference1.getString("lat_"+i, null));// Double lon1=Double.valueOf(mSharedPreference1.getString("lat_"+i, null));// pointList.add(new LatLng(lat1, lon1)); // }// }/** 刪除xml文件*/private void deleteXML() {File file = new File("/data/data/" + getPackageName().toString() + "/shared_prefs", "lat.xml"); if (file.exists()) { file.delete(); }}/** 顯示實(shí)時(shí)軌跡* * @param realtimeTrack*/protected void showRealtimeTrack(BDLocation location) {double latitude = location.getLatitude();double longitude = location.getLongitude();if (Math.abs(latitude - 0.0) < 0.000001 && Math.abs(longitude - 0.0) < 0.000001) {Toast.makeText(this, "當(dāng)前無軌跡點(diǎn)", 3000).show();} else {latLng = new LatLng(latitude, longitude);if (IsMove(latLng,location)) {// 繪制實(shí)時(shí)點(diǎn)drawRealtimePoint(latLng);}}}/** 繪制實(shí)時(shí)點(diǎn)* * @param points*/private void drawRealtimePoint(LatLng point) {BaiDuMap.clear();polyline=null;MapStatus mMapStatus = new MapStatus.Builder().target(point).build();msUpdate = MapStatusUpdateFactory.newMapStatus(mMapStatus);overlay = new MarkerOptions().position(point).icon(bitmap).zIndex(9).draggable(true);if (pointList.size() >=2 && pointList.size() <= 100000) {// 添加路線（軌跡）polyline = new PolylineOptions().width(10).color(Color.RED).points(pointList);}addMarker();}/** 添加地圖覆蓋物*/protected void addMarker() {if (null != msUpdate) {BaiDuMap.setMapStatus(msUpdate);}// 路線覆蓋物if (null != polyline) {BaiDuMap.addOverlay(polyline);}// 實(shí)時(shí)點(diǎn)覆蓋物if (null != overlay) {BaiDuMap.addOverlay(overlay);}//起點(diǎn)覆蓋物if (null != StartOverlay) {BaiDuMap.addOverlay(StartOverlay);}// 終點(diǎn)覆蓋物if (null != EndOverlay) {BaiDuMap.addOverlay(EndOverlay);}}/**@author chenzheng_Java *保存用戶輸入的內(nèi)容到文件 */ private void save(String content) { try { /* 根據(jù)用戶提供的文件名，以及文件的應(yīng)用模式，打開一個(gè)輸出流.文件不存系統(tǒng)會(huì)為你創(chuàng)建一個(gè)的， * 至于為什么這個(gè)地方還有FileNotFoundException拋出，我也比較納悶。在Context中是這樣定義的 * public abstract FileOutputStream openFileOutput(String name, int mode) * throws FileNotFoundException; * openFileOutput(String name, int mode); * 第一個(gè)參數(shù)，代表文件名稱，注意這里的文件名稱不能包括任何的/或者/這種分隔符，只能是文件名 * 該文件會(huì)被保存在/data/data/應(yīng)用名稱/files/chenzheng_java.txt * 第二個(gè)參數(shù)，代表文件的操作模式 * MODE_PRIVATE 私有（只能創(chuàng)建它的應(yīng)用訪問） 重復(fù)寫入時(shí)會(huì)文件覆蓋 * MODE_APPEND 私有 重復(fù)寫入時(shí)會(huì)在文件的末尾進(jìn)行追加，而不是覆蓋掉原來的文件 * MODE_WORLD_READABLE 公用 可讀 * MODE_WORLD_WRITEABLE 公用 可讀寫 * */ content=content+"\n";FileOutputStream outputStream = openFileOutput("Log.log",Activity.MODE_APPEND); outputStream.write(content.getBytes()); outputStream.flush(); outputStream.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } /** 獲取系統(tǒng)時(shí)間*/private String getStringDate() {Date currentTime = new Date();SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");String dateString = formatter.format(currentTime);return dateString;}/** 判斷手機(jī)是否在運(yùn)動(dòng)*/private boolean IsMove(LatLng latLng,BDLocation location){if(pointList.size()>=1){Double dis=DistanceUtil.getDistance(pointList.get(pointList.size()-1),latLng);//判斷手機(jī)是否靜止,如果靜止,判定采集點(diǎn)無效,直接拋棄if(!acc.is_Acc&&acc.IsRun){acc.IsRun=false;return false;}//判斷是否是第一次定位置,如果是第一次定位并且因?yàn)榈谝淮螔仐壍奈恢脭?shù)量小于10個(gè)則判斷兩點(diǎn)間距離大小if(FLostLoc<10){FLostLoc=FLostLoc+1;if(dis>10&&FLostLoc<6){//距離大于十米,而且被拋棄數(shù)量少于5個(gè)則說明有可能是獲取位置失敗pointList.clear();pointList.add(latLng);//更新位置return false;}if(dis>0&&dis<10&&FLostLoc>=6)//如果距離在10米內(nèi),則表示客戶正在運(yùn)動(dòng),直接跳出FLostLoc=11;}//根據(jù)兩點(diǎn)間距離判斷是否發(fā)生定位漂移,如果漂移距離小于MinDistance則拋棄,如果漂移距離大于MaxDistance則取兩點(diǎn)的中間點(diǎn).if(dis<=MinDistance){if((dis<=MinDistance||dis>=MaxDistance)){return false;}if(LostLoc>=4){Double newlatitude=(latLng.latitude+pointList.get(pointList.size()-1).latitude)/2;Double newlongitude=(latLng.longitude+pointList.get(pointList.size()-1).longitude)/2;latLng = new LatLng(newlatitude, newlongitude);}else{LostLoc=LostLoc+1;return false;}}LostLoc=0;//重置丟失點(diǎn)的個(gè)數(shù)// pointList.add(latLng);acc.is_Acc=false;}pointList.add(latLng);return true;}/** 開始規(guī)劃線路*/private void StartRoutePlan() {// TODO Auto-generated method stubprogressDialog.setTitle("路線規(guī)劃");progressDialog.setMessage("正在規(guī)劃路線請(qǐng)稍后。。");progressDialog.show();if(pointList!=null||pointList.size()>0)pointList.clear();PlanNode stNode = PlanNode.withLocation(ll); StartOverlay=new MarkerOptions().position(ll).icon(StartBitmap).zIndex(9);PlanNode enNode = PlanNode.withLocation(EndLL);EndOverlay=new MarkerOptions().position(EndLL).icon(EndBitmap).zIndex(9);mSearch.walkingSearch((new WalkingRoutePlanOption()) .from(stNode) .to(enNode));isGetRoute=true;}/** 獲取新路線*/private void IsGetNewRoute() {// TODO Auto-generated method stubAlertDialog.Builder builder = new Builder(this);builder.setMessage("您已偏移路線,是否重新規(guī)劃路線？");builder.setTitle("路線偏移");builder.setPositiveButton("重新規(guī)劃", new OnClickListener() { @Overridepublic void onClick(DialogInterface dialog, int which) {StartRoutePlan();dialog.dismiss();}}); builder.setNegativeButton("按原規(guī)劃", new OnClickListener() { @Overridepublic void onClick(DialogInterface dialog, int which) {dialog.dismiss();}});builder.create().show();isGetNewRoute=false;}/** 申請(qǐng)電源鎖 */private void acquireWakeLock() {if (null == wakeLock) {PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK | PowerManager.ON_AFTER_RELEASE,getClass().getName());}IntentFilter filter = new IntentFilter();filter.addAction(Intent.ACTION_SCREEN_ON);filter.addAction(Intent.ACTION_SCREEN_OFF);registerReceiver(powerReceiver, filter);}/** 釋放電源鎖*/private void releaseWakeLock() {unregisterReceiver(powerReceiver);} }

##下面PowerReceiver文件的內(nèi)容

這里貼出的代碼主要是完成電源鎖的開啟和撤銷

package com.example.baidutext;import android.annotation.SuppressLint; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent;public class PowerReceiver extends BroadcastReceiver {@SuppressLint("Wakelock")@Overridepublic void onReceive(final Context context, final Intent intent) {final String action = intent.getAction();//按下電源鍵,關(guān)閉屏幕if (Intent.ACTION_SCREEN_OFF.equals(action)) {System.out.println("screen off,acquire wake lock!");if (null != MainActivity.wakeLock && !(MainActivity.wakeLock.isHeld())) {MainActivity.wakeLock.acquire();}//按下電源鍵,打開屏幕 } else if (Intent.ACTION_SCREEN_ON.equals(action)) {System.out.println("screen on,release wake lock!");if (null != MainActivity.wakeLock && MainActivity.wakeLock.isHeld()) {MainActivity.wakeLock.release();}}}}

##下面Acc文件的內(nèi)容

這個(gè)文件主要是獲取加速感應(yīng)器的值，然后通過波峰和波谷的插值，以及兩個(gè)波峰之間的時(shí)間差來判斷手機(jī)是否處于移動(dòng)。關(guān)于詳細(xì)的大家可查找計(jì)步器原理。一下算法非本人原創(chuàng)，但是一直找不到原創(chuàng)作者，如作者本人看到，可與我聯(lián)系

package com.example.baidutext;import android.hardware.Sensor; import android.hardware.SensorListener; /***根據(jù)加速度判斷手機(jī)是否處于靜止* @author Administrator**/ public class Acc implements SensorListener {// /**// * 手機(jī)加速度各方向狀態(tài)// */// private float F_Acc_x,F_Acc_y,F_Acc_z;// /**// * 上次獲取狀態(tài)時(shí)間// */// private long LastUpdateTime; // /**// * 兩次獲取狀態(tài)時(shí)間間隔單位(秒)// */// private final int UPTATE_INTERVAL_TIME = 1000*10; // /*** 當(dāng)前傳感器的值*/private float gravityNew = 0;/*** 上次傳感器的值*/private float gravityOld = 0;/*** 此次波峰的時(shí)間*/private long timeOfThisPeak = 0;/*** 上次波峰的時(shí)間*/private long timeOfLastPeak = 0;/*** 當(dāng)前的時(shí)間*/private long timeOfNow = 0;;/*** 波峰值*/private float peakOfWave = 0;/*** 波谷值*/private float valleyOfWave = 0;/*** 初始閾值*/private float ThreadValue = (float) 2.0;/*** 動(dòng)態(tài)閾值需要?jiǎng)討B(tài)的數(shù)據(jù)，這個(gè)值用于這些動(dòng)態(tài)數(shù)據(jù)的閾值*/private final float initialValue = (float) 1.3;/*** 上一點(diǎn)的狀態(tài)，上升還是下降*/private boolean lastStatus = false;/*** 是否上升的標(biāo)志位*/private boolean isDirectionUp = false;/*** 持續(xù)上升次數(shù)*/private int continueUpCount = 0;/*** 上一點(diǎn)的持續(xù)上升的次數(shù)，為了記錄波峰的上升次數(shù)*/private int continueUpFormerCount = 0;public boolean is_Acc=false;// private int ACC=30;//手機(jī)感應(yīng)器波動(dòng)范圍,30以內(nèi)判定手機(jī)處于靜止private int tempCount = 0;private final int valueNum = 4;/*** 用于存放計(jì)算閾值的波峰波谷差值*/private float[] tempValue = new float[valueNum];/*** 記錄波峰數(shù)量*/private int CountValue = 0;/*** 判斷傳感器是否在運(yùn)行*/public boolean IsRun=false; public Acc(){// LastUpdateTime=System.currentTimeMillis();}@Overridepublic void onAccuracyChanged(int arg0, int arg1) {// TODO Auto-generated method stub}/*** 感應(yīng)器狀態(tài)改變時(shí)自動(dòng)調(diào)用此方法*/@Overridepublic void onSensorChanged(int arg0, float[] arg1) {// TODO Auto-generated method stubIsRun=true;if(arg0==Sensor.TYPE_ACCELEROMETER){// JIUjia(arg1);gravityNew = (float) Math.sqrt(arg1[0] * arg1[0]+ arg1[1] * arg1[1] + arg1[2] * arg1[2]);DetectorNewStep(gravityNew);}}// protected boolean JIUjia(float[] values) {// if(F_Acc_x!=0){// long currentUpdateTime = System.currentTimeMillis(); // long timeInterval = currentUpdateTime - LastUpdateTime; // if(timeInterval < UPTATE_INTERVAL_TIME)// return false;// LastUpdateTime=currentUpdateTime;// float tem0=values[0]-F_Acc_x;// float tem1=values[1]-F_Acc_y;// float tem2=values[2]-F_Acc_z;// System.out.println(Math.abs(tem0)+","+Math.abs(tem1)+","+Math.abs(tem2));// if(Math.abs(tem0)>ACC||Math.abs(tem1)>ACC||Math.abs(tem2)>ACC)// is_Acc=true;// // }// F_Acc_x=values[0];// F_Acc_y=values[1];// F_Acc_z=values[2];// return is_Acc;//// }/** 檢測步子* 1.傳入sersor中的數(shù)據(jù)* 2.如果檢測到了波峰，并且符合時(shí)間差以及閾值的條件，則判定為1步* 3.符合時(shí)間差條件，波峰波谷差值大于initialValue，則將該差值納入閾值的計(jì)算中* */public void DetectorNewStep(float values) {if (gravityOld == 0) {gravityOld = values;} else {if (DetectorPeak(values, gravityOld)) {timeOfLastPeak = timeOfThisPeak;timeOfNow = System.currentTimeMillis();if ((timeOfNow - timeOfLastPeak) >= 250&& (peakOfWave - valleyOfWave >= ThreadValue)) {timeOfThisPeak = timeOfNow;//兩步之間間隔大于4秒則不算if((timeOfNow-timeOfLastPeak)>40000)CountValue=0;elseCountValue++;//只有手機(jī)連續(xù)搖晃4下或者以上才判定為走路if(CountValue>=4)is_Acc=true;// mStepListeners.onStep();}if (timeOfNow - timeOfLastPeak >= 250&& (peakOfWave - valleyOfWave >= initialValue)) {timeOfThisPeak = timeOfNow;ThreadValue = Peak_Valley_Thread(peakOfWave - valleyOfWave);}}}gravityOld = values;}/** 檢測波峰* 以下四個(gè)條件判斷為波峰：* 1.目前點(diǎn)為下降的趨勢(shì)：isDirectionUp為false* 2.之前的點(diǎn)為上升的趨勢(shì)：lastStatus為true* 3.到波峰為止，持續(xù)上升大于等于4次* 4.波峰值大于20* 記錄波谷值* 1.觀察波形圖，可以發(fā)現(xiàn)在出現(xiàn)步子的地方，波谷的下一個(gè)就是波峰，有比較明顯的特征以及差值* 2.所以要記錄每次的波谷值，為了和下次的波峰做對(duì)比* */public boolean DetectorPeak(float newValue, float oldValue) {lastStatus = isDirectionUp;if (newValue >= oldValue) {isDirectionUp = true;continueUpCount++;} else {continueUpFormerCount = continueUpCount;continueUpCount = 0;isDirectionUp = false;}if (!isDirectionUp && lastStatus&& (continueUpFormerCount >= 4 || oldValue >= 20&&oldValue<=40)) {peakOfWave = oldValue;return true;} else if (!lastStatus && isDirectionUp) {valleyOfWave = oldValue;return false;} else {return false;}}/** 閾值的計(jì)算* 1.通過波峰波谷的差值計(jì)算閾值* 2.記錄4個(gè)值，存入tempValue[]數(shù)組中* 3.在將數(shù)組傳入函數(shù)averageValue中計(jì)算閾值* */public float Peak_Valley_Thread(float value) {float tempThread = ThreadValue;if (tempCount < valueNum) {tempValue[tempCount] = value;tempCount++;} else {tempThread = averageValue(tempValue, valueNum);for (int i = 1; i < valueNum; i++) {tempValue[i - 1] = tempValue[i];}tempValue[valueNum - 1] = value;}return tempThread;}/** 梯度化閾值* 1.計(jì)算數(shù)組的均值* 2.通過均值將閾值梯度化在一個(gè)范圍里* */public float averageValue(float value[], int n) {float ave = 0;for (int i = 0; i < n; i++) {ave += value[i];}ave = ave / valueNum;if (ave >= 8)ave = (float) 4.3;else if (ave >= 7 && ave < 8)ave = (float) 3.3;else if (ave >= 4 && ave < 7)ave = (float) 2.3;else if (ave >= 3 && ave < 4)ave = (float) 2.0;else {ave = (float) 1.3;}return ave;} }

至此就全部結(jié)束了，各位如有其他問題可直接留言給我。

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