GoogleマップOnCameraChangeListenerジオコーダAsynTaskブロックUIスレッドは

Question

指で地図サーフィンを扱うが、いつかUIスレッドは非同期タスクコード

googleMap.setOnCameraChangeListener(new GoogleMap.OnCameraChangeListener() { 
     @Override 
     public void onCameraChange(CameraPosition cameraPosition) { 
      ShowSearchLocationLoader(true); 
      LatLng latlngCamera = new LatLng(cameraPosition.target.latitude, cameraPosition.target.longitude); 

      if(Utilities.isConnected == true) { 
       cameraChangedTask = new CameraChangedTask(); 
       cameraChangedTask.execute(latlngCamera); 
      } else { 
       Toast.makeText(ActivityHome.this, R.string.connection_error, Toast.LENGTH_SHORT).show(); 
      } 
     } 

    }); 
} 

---

private class CameraChangedTask extends AsyncTask<LatLng, Void, Void> { 
     List<Address> address; 

     @Override 
     protected Void doInBackground(LatLng... latLngs) { 
      Geocoder coder = new Geocoder(currentContext); 
      LatLng location = latLngs[0]; 
      try { 
        address = coder.getFromLocation(location.latitude, location.longitude, 1); 
      } catch (Exception e) { 
       e.printStackTrace(); // getFromLocation() may sometimes fail 
      } 
      return null; 
     } 

     @Override 
     protected void onPostExecute(Void aVoid) { 
      super.onPostExecute(aVoid); 
      try { 

       if (address != null) { 
        if (address.isEmpty()) { 
         mAutocompleteView.setHint("Waiting for Location"); 
        } else { 
         if (address.size() > 0 && address.get(0) != null) { 
          mAutocompleteView.setHint(address.get(0).getAddressLine(0) + ", " + address.get(0).getAddressLine(1)); 
          setPickupaddress(address.get(0).getAddressLine(0) + ", " + address.get(0).getAddressLine(1)); 
         } else { 
          mAutocompleteView.setHint(address.get(0).getFeatureName()); 
          setPickupaddress(address.get(0).getFeatureName()); 
         } 
        } 
       } 
      } catch (Exception e) { 
       e.printStackTrace(); 
      } 
      ShowSearchLocationLoader(false); 
     } 
    } 

を実行するために入る前に約30秒間ブロックされているコードは、

Answer 1

cameraChangedTask = new CameraChangedTask（）; cameraChangedTask.executeOnExecutor（AsyncTask.THREAD_POOL_EXECUTOR、latlngCamera）;