定位

app/src/main/java/com/nsgk/ruralWeb/EnvWindowObject.java

@@ -1,6 +1,8 @@
 package com.nsgk.ruralWeb;
 
+import android.annotation.SuppressLint;
 import android.app.Activity;
+import android.location.Criteria;
 import android.location.LocationManager;
 
 import android.Manifest;
@@ -9,6 +11,7 @@ import android.content.pm.PackageManager;
 import android.location.Location;
 import android.location.LocationManager;
 import android.location.LocationProvider;
+import android.os.Build;
 import android.os.Handler;
 import android.util.Log;
 import android.webkit.JavascriptInterface;
@@ -23,6 +26,7 @@ import com.nsgk.ruralWeb.utils.ContextUtils;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.concurrent.CompletableFuture;
 
 public class EnvWindowObject
 {
@@ -45,12 +49,17 @@ public class EnvWindowObject
 
     @JavascriptInterface
     public void Toast(final String message)
+    {
+        ShowToast(message, Toast.LENGTH_LONG);
+    }
+
+    private void ShowToast(final String message, int duration)
     {
         RunOnUIThread(new Runnable() {
             @Override
             public void run()
             {
-                Toast.makeText(m_context, message, Toast.LENGTH_LONG).show();
+                Toast.makeText(m_context, message, duration).show();
             }
         });
     }
@@ -83,38 +92,114 @@ public class EnvWindowObject
                 return lastLocation;
             }
 
+            LocationInfo loc;
+
+            loc = GetHighLocation(null);
+            if(null == loc)
+                loc = GetLastLocation(type);
+
+            if(null != loc)
+                lastLocation = loc.longitude + "," + loc.latitude;
+            else
+                ShowToast("定位失败, 请先开启位置服务", Toast.LENGTH_LONG);
+        }
+        catch(Throwable e)
+        {
+            e.printStackTrace();
+        }
+        return lastLocation;
+    }
+
+    @SuppressLint("MissingPermission")
+    private LocationInfo GetLastLocation(final String type)
+    {
+        LocationInfo loc = null;
+        try
+        {
             LocationManager lm = (LocationManager) m_context.getSystemService(Context.LOCATION_SERVICE);
 
             List<String> allProviders = lm.getAllProviders();
+            Log.i("NSGK", "使用最近所有定位提供器: " + allProviders);
             Map<String, LocationInfo> map = new HashMap<>();
             for(String provider : allProviders)
             {
                 Location lastKnownLocation = lm.getLastKnownLocation(provider);
                 if(null == lastKnownLocation)
                     continue;
-                LocationInfo loc = new LocationInfo(provider, lastKnownLocation.getLongitude(), lastKnownLocation.getLatitude());
-                map.put(provider, loc);
+                LocationInfo l = new LocationInfo(provider, lastKnownLocation.getLongitude(), lastKnownLocation.getLatitude());
+                map.put(provider, l);
             }
-            LocationInfo loc = null;
+
+            Log.i("NSGK", "最近定位提供器结果: " + map);
             if(null != type && !type.isEmpty() && map.containsKey(type))
                 loc = map.get(type);
-            else if(map.containsKey(LocationManager.NETWORK_PROVIDER))
-                loc = map.get(LocationManager.NETWORK_PROVIDER);
+            else if(map.containsKey(FUSED_PROVIDER))
+                loc = map.get(FUSED_PROVIDER);
             else if(map.containsKey(LocationManager.GPS_PROVIDER))
                 loc = map.get(LocationManager.GPS_PROVIDER);
+            else if(map.containsKey(LocationManager.NETWORK_PROVIDER))
+                loc = map.get(LocationManager.NETWORK_PROVIDER);
             else if(map.containsKey(LocationManager.PASSIVE_PROVIDER))
-                loc = map.get(LocationManager.GPS_PROVIDER);
-            else if(map.containsKey(FUSED_PROVIDER))
-                loc = map.get(FUSED_PROVIDER);
+                loc = map.get(LocationManager.PASSIVE_PROVIDER);
+            if(null == loc)
+                Log.i("NSGK", "所有提供器无最近定位");
+            else
+                Log.i("NSGK", "使用提供器最近定位: " + loc.provider);
+        }
+        catch(Throwable e)
+        {
+            e.printStackTrace();
+        }
+        return loc;
+    }
 
-            if(null != loc)
-                lastLocation = loc.longitude + "," + loc.latitude;
+    @SuppressLint("MissingPermission")
+    private LocationInfo GetHighLocation(String provider)
+    {
+        if(Build.VERSION.SDK_INT < Build.VERSION_CODES.R)
+        {
+            return null;
+        }
+
+        LocationInfo loc = null;
+        try
+        {
+            LocationManager lm = (LocationManager) m_context.getSystemService(Context.LOCATION_SERVICE);
+
+            if(null == provider)
+            {
+                Criteria criteria = new Criteria();
+                criteria.setAccuracy(Criteria.ACCURACY_FINE); // 高精度
+//            criteria.setPowerRequirement(Criteria.POWER_HIGH);
+//            criteria.setAltitudeRequired(false);
+                provider = lm.getBestProvider(criteria, true);
+            }
+            Log.i("NSGK", "使用高精度定位提供器: " + provider);
+
+            if(null == provider)
+            {
+                Log.i("NSGK", "无法获取高精度定位提供器");
+                return null;
+            }
+
+            CompletableFuture<Location> future = new CompletableFuture<>();
+            if(null == lastLocation)
+                ShowToast("定位中......", Toast.LENGTH_SHORT);
+            lm.getCurrentLocation(provider, null, m_context.getMainExecutor(), future::complete);
+            Location location = future.get();
+            if(null == location)
+            {
+                Log.i("NSGK", "无法使用高精度提供器定位");
+                return null;
+            }
+            loc = new LocationInfo(provider, location.getLongitude(), location.getLatitude());
+            Log.i("NSGK", "使用高精度提供器获取定位: " + loc);
         }
         catch(Throwable e)
         {
             e.printStackTrace();
         }
-        return lastLocation;
+        return loc;
     }
 
     protected void RunOnUIThread(Runnable runnable)