在这篇博客中主要做了两个工作
① 添加显示他人位置的marker
② 将他人头像作为图片合并到marker中进行显示
主要代码:
① 添加他人位置
这段代码可以添加到构造函数中,或者从服务器获取到他人位置后的代码中去
//添加他人位置 Resources r = this.getResources(); Bitmap bmp= BitmapFactory.decodeResource(r, R.drawable.touxiang); addOthersLocation(double(对方的经度),double(对方的纬度),bmp(对方的头像bitmap));
主要函数:
public void addOthersLocation(double latitute,double longtitute, Bitmap touxiang) { Resources r = this.getResources(); Bitmap bmp= BitmapFactory.decodeResource(r, R.drawable.icon_geo);//红点 // //构建Marker图标 // othersCurrentMarker = BitmapDescriptorFactory // .fromResource(R.drawable.icon_geo); //构建Marker图标 othersCurrentMarker = BitmapDescriptorFactory .fromBitmap(mergeBitmap(bmp,touxiang));//public static BitmapDescriptor fromBitmap(Bitmap image) + mergeBitmap() //定义Maker坐标点 LatLng point = new LatLng(latitute, longtitute); //构建MarkerOption,用于在地图上添加Marker OverlayOptions option = new MarkerOptions() .position(point) .icon(othersCurrentMarker); //在地图上添加Marker,并显示 mBaiduMap.addOverlay(option); }
② 合并标志点图片和用户头像图像
//将两张图片合并为一张图片 用作头像 private Bitmap mergeBitmap(Bitmap firstBitmap, Bitmap secondBitmap) { int Width = firstBitmap.getWidth(); int height = firstBitmap.getHeight(); secondBitmap = zoomImage(secondBitmap,Width,height); Bitmap bitmap = Bitmap.createBitmap(Width, height*2, firstBitmap.getConfig()); Canvas canvas = new Canvas(bitmap); canvas.drawBitmap(secondBitmap, new Matrix(), null); canvas.drawBitmap(firstBitmap, 0, height, null); return bitmap; } //缩放头像图片 public Bitmap zoomImage(Bitmap bgimage, double newWidth, double newHeight) { // 获取这个图片的宽和高 float width = bgimage.getWidth(); float height = bgimage.getHeight(); // 创建操作图片用的matrix对象 Matrix matrix = new Matrix(); // 计算宽高缩放率 float scaleWidth = ((float) newWidth) / width; float scaleHeight = ((float) newHeight) / height; // 缩放图片动作 matrix.postScale(scaleWidth, scaleHeight); Bitmap bitmap = Bitmap.createBitmap(bgimage, 0, 0, (int) width, (int) height, matrix, true); return bitmap; }
完整代码:
import android.Manifest; import android.app.Activity; import android.content.Context; import android.content.pm.PackageManager; import android.content.res.Resources; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.Matrix; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.Drawable; import android.hardware.Sensor; import android.hardware.SensorEvent; import android.hardware.SensorEventListener; import android.hardware.SensorManager; import android.os.Build; import android.os.Bundle; import android.support.v4.app.ActivityCompat; import android.support.v4.content.ContextCompat; import android.util.Log; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.CompoundButton; import android.widget.ImageView; import android.widget.RadioGroup.OnCheckedChangeListener; import android.widget.Toast; import android.widget.ToggleButton; import android.widget.ZoomControls; 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.BitmapDescriptor; import com.baidu.mapapi.map.BitmapDescriptorFactory; 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.MyLocationConfiguration; import com.baidu.mapapi.map.MyLocationConfiguration.LocationMode; import com.baidu.mapapi.map.MyLocationData; import com.baidu.mapapi.map.OverlayOptions; import com.baidu.mapapi.model.LatLng; /** * 此demo用来展示如何结合定位SDK实现定位,并使用MyLocationOverlay绘制定位位置 同时展示如何使用自定义图标绘制并点击时弹出泡泡 * */ public class LocationDemo extends Activity { // 定位相关 LocationClient mLocClient; public MyLocationListenner myListener = new MyLocationListenner(); private LocationMode mCurrentMode; BitmapDescriptor mCurrentMarker,othersCurrentMarker; MapView mMapView; BaiduMap mBaiduMap; private SensorManager mSensorManager; double degree = 0; // UI相关 OnCheckedChangeListener radioButtonListener; Button requestLocButton; ToggleButton togglebtn = null; boolean isFirstLoc = true;// 是否首次定位 @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); SDKInitializer.initialize(getApplicationContext()); setContentView(R.layout.activity_location); judgePermission(); requestLocButton = (Button) findViewById(R.id.button1); mCurrentMode = LocationMode.NORMAL; requestLocButton.setText("普通"); OnClickListener btnClickListener = new OnClickListener() { public void onClick(View v) { switch (mCurrentMode) { case NORMAL: requestLocButton.setText("跟随"); mCurrentMode = LocationMode.FOLLOWING; mBaiduMap .setMyLocationConfigeration(new MyLocationConfiguration( mCurrentMode, true, mCurrentMarker)); break; case COMPASS: requestLocButton.setText("普通"); mCurrentMode = LocationMode.NORMAL; mBaiduMap .setMyLocationConfigeration(new MyLocationConfiguration( mCurrentMode, true, mCurrentMarker)); break; case FOLLOWING: requestLocButton.setText("罗盘"); mCurrentMode = LocationMode.COMPASS; mBaiduMap .setMyLocationConfigeration(new MyLocationConfiguration( mCurrentMode, true, mCurrentMarker)); break; } } }; requestLocButton.setOnClickListener(btnClickListener); togglebtn = (ToggleButton) findViewById(R.id.togglebutton); togglebtn .setOnCheckedChangeListener(new android.widget.CompoundButton.OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { if (isChecked) { // 普通地图 mBaiduMap.setMapType(BaiduMap.MAP_TYPE_SATELLITE); } else { // 卫星地图 mBaiduMap.setMapType(BaiduMap.MAP_TYPE_NORMAL); } } }); // 地图初始化 mMapView = (MapView) findViewById(R.id.bmapView); mBaiduMap = mMapView.getMap(); // 开启定位图层 mBaiduMap.setMyLocationEnabled(true); // 定位初始化 mLocClient = new LocationClient(this); mLocClient.registerLocationListener(myListener); LocationClientOption option = new LocationClientOption(); option.setOpenGps(true);// 打开gps option.setCoorType("bd09ll"); // 设置坐标类型 option.setScanSpan(1000);// 设置发起定位请求的间隔时间为1000ms option.setIsNeedAddress(true); mLocClient.setLocOption(option); mLocClient.start(); // 隐藏logo View child = mMapView.getChildAt(1); if (child != null && (child instanceof ImageView || child instanceof ZoomControls)){ child.setVisibility(View.INVISIBLE); } //指南针 mSensorManager= (SensorManager) getSystemService(Context.SENSOR_SERVICE); Sensor magenticSensor=mSensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD); Sensor accelerometerSensor=mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER); mSensorManager.registerListener(listener,magenticSensor,SensorManager.SENSOR_DELAY_GAME); mSensorManager.registerListener(listener,accelerometerSensor,SensorManager.SENSOR_DELAY_GAME); //添加他人位置 Resources r = this.getResources(); Bitmap bmp= BitmapFactory.decodeResource(r, R.drawable.touxiang); addOthersLocation(经度(double),纬度(double),头像bmp); } //指南针 获取degree值 private SensorEventListener listener=new SensorEventListener() { float[] accelerometerValues=new float[3]; float[] magenticValues=new float[3]; @Override public void onSensorChanged(SensorEvent sensorEvent) { //判断当前是加速度传感器还是地磁传感器 if(sensorEvent.sensor.getType()==Sensor.TYPE_ACCELEROMETER){ accelerometerValues=sensorEvent.values.clone(); }else if(sensorEvent.sensor.getType()== Sensor.TYPE_MAGNETIC_FIELD){ magenticValues=sensorEvent.values.clone(); } float[] R=new float[9]; float[] values=new float[3]; SensorManager.getRotationMatrix(R, null, accelerometerValues, magenticValues); SensorManager.getOrientation(R,values); Log.d("MainActivity","value[0] is"+Math.toDegrees(values[0])); degree = Math.toDegrees(values[0]); } @Override public void onAccuracyChanged(Sensor sensor, int i) { } }; public void addOthersLocation(double latitute,double longtitute, Bitmap touxiang) { Resources r = this.getResources(); Bitmap bmp= BitmapFactory.decodeResource(r, R.drawable.icon_geo);//标识红点 // //构建Marker图标 // othersCurrentMarker = BitmapDescriptorFactory // .fromResource(R.drawable.icon_geo); //构建Marker图标 othersCurrentMarker = BitmapDescriptorFactory .fromBitmap(mergeBitmap(bmp,touxiang));//public static BitmapDescriptor fromBitmap(Bitmap image) + mergeBitmap() //定义Maker坐标点 LatLng point = new LatLng(latitute, longtitute); //构建MarkerOption,用于在地图上添加Marker OverlayOptions option = new MarkerOptions() .position(point) .icon(othersCurrentMarker); //在地图上添加Marker,并显示 mBaiduMap.addOverlay(option); } //将两张图片合并为一张图片 用作头像 private Bitmap mergeBitmap(Bitmap firstBitmap, Bitmap secondBitmap) { int Width = firstBitmap.getWidth(); int height = firstBitmap.getHeight(); secondBitmap = zoomImage(secondBitmap,Width,height); Bitmap bitmap = Bitmap.createBitmap(Width, height*2, firstBitmap.getConfig()); Canvas canvas = new Canvas(bitmap); canvas.drawBitmap(secondBitmap, new Matrix(), null); canvas.drawBitmap(firstBitmap, 0, height, null); return bitmap; } //缩放头像图片 public Bitmap zoomImage(Bitmap bgimage, double newWidth, double newHeight) { // 获取这个图片的宽和高 float width = bgimage.getWidth(); float height = bgimage.getHeight(); // 创建操作图片用的matrix对象 Matrix matrix = new Matrix(); // 计算宽高缩放率 float scaleWidth = ((float) newWidth) / width; float scaleHeight = ((float) newHeight) / height; // 缩放图片动作 matrix.postScale(scaleWidth, scaleHeight); Bitmap bitmap = Bitmap.createBitmap(bgimage, 0, 0, (int) width, (int) height, matrix, true); return bitmap; } /** * 定位SDK监听函数 */ public class MyLocationListenner implements BDLocationListener { @Override public void onReceiveLocation(BDLocation location) { // map view 销毁后不在处理新接收的位置 if (location == null || mMapView == null) return; 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((float)degree).latitude(location.getLatitude()) .longitude(location.getLongitude()).build(); mBaiduMap.setMyLocationData(locData); if (isFirstLoc) { isFirstLoc = false; //定义Maker坐标点 https://blog.csdn.net/u012382791/article/details/53856203 LatLng ll = new LatLng(location.getLatitude(), location.getLongitude()); // MapStatusUpdate u = MapStatusUpdateFactory.newLatLng(ll); // 设置缩放比例,更新地图状态 float f = mBaiduMap.getMaxZoomLevel();// 19.0 MapStatusUpdate u = MapStatusUpdateFactory.newLatLngZoom(ll, f - 2); mBaiduMap.animateMapStatus(u); //地图位置显示 Toast.makeText(LocationDemo.this, location.getAddrStr(), Toast.LENGTH_SHORT).show(); } } public void onReceivePoi(BDLocation poiLocation) { } } @Override protected void onPause() { mMapView.onPause(); super.onPause(); } @Override protected void onResume() { mMapView.onResume(); super.onResume(); } @Override protected void onDestroy() { // 退出时销毁定位 mLocClient.stop(); // 关闭定位图层 mBaiduMap.setMyLocationEnabled(false); mMapView.onDestroy(); mMapView = null; if(mSensorManager!=null){ mSensorManager.unregisterListener(listener); } super.onDestroy(); } //6.0之后要动态获取权限,重要!!! protected void judgePermission() { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { // 检查该权限是否已经获取 // 权限是否已经 授权 GRANTED---授权 DINIED---拒绝 // sd卡权限 String[] SdCardPermission = {Manifest.permission.WRITE_EXTERNAL_STORAGE}; if (ContextCompat.checkSelfPermission(this, SdCardPermission[0]) != PackageManager.PERMISSION_GRANTED) { // 如果没有授予该权限,就去提示用户请求 ActivityCompat.requestPermissions(this, SdCardPermission, 100); } //手机状态权限 String[] readPhoneStatePermission = {Manifest.permission.READ_PHONE_STATE}; if (ContextCompat.checkSelfPermission(this, readPhoneStatePermission[0]) != PackageManager.PERMISSION_GRANTED) { // 如果没有授予该权限,就去提示用户请求 ActivityCompat.requestPermissions(this, readPhoneStatePermission, 200); } //定位权限 String[] locationPermission = {Manifest.permission.ACCESS_FINE_LOCATION}; if (ContextCompat.checkSelfPermission(this, locationPermission[0]) != PackageManager.PERMISSION_GRANTED) { // 如果没有授予该权限,就去提示用户请求 ActivityCompat.requestPermissions(this, locationPermission, 300); } String[] ACCESS_COARSE_LOCATION = {Manifest.permission.ACCESS_COARSE_LOCATION}; if (ContextCompat.checkSelfPermission(this, ACCESS_COARSE_LOCATION[0]) != PackageManager.PERMISSION_GRANTED) { // 如果没有授予该权限,就去提示用户请求 ActivityCompat.requestPermissions(this, ACCESS_COARSE_LOCATION, 400); } String[] READ_EXTERNAL_STORAGE = {Manifest.permission.READ_EXTERNAL_STORAGE}; if (ContextCompat.checkSelfPermission(this, READ_EXTERNAL_STORAGE[0]) != PackageManager.PERMISSION_GRANTED) { // 如果没有授予该权限,就去提示用户请求 ActivityCompat.requestPermissions(this, READ_EXTERNAL_STORAGE, 500); } String[] WRITE_EXTERNAL_STORAGE = {Manifest.permission.WRITE_EXTERNAL_STORAGE}; if (ContextCompat.checkSelfPermission(this, WRITE_EXTERNAL_STORAGE[0]) != PackageManager.PERMISSION_GRANTED) { // 如果没有授予该权限,就去提示用户请求 ActivityCompat.requestPermissions(this, WRITE_EXTERNAL_STORAGE, 600); } }else{ //doSdCardResult(); } //LocationClient.reStart(); } }
效果截图:
左上角红点带头像的就是别人的位置显示