Android kann Google Karte nicht laufen lassen und Netzfehler

Question

zurückbringen Ich habe ein Android-Programm geschrieben, um Google Karte zu zeigen und den gegenwärtigen Standort zu zeigen.

Hier ist ein Teil des Codes ist, sehen Sie bitte:

public class MapActivity extends FragmentActivity implements OnMapReadyCallback,LocationListener { 
public static GoogleMap googleMap; 

private Geocoder geoCoder; 
private ArrayAdapter<String> adapter; 
private List<Address> addressSearchList; 
private static final int MY_PERMISSION_ACCESS_COARSE_LOCATION = 11; 


@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.view_map); 
    Log.d("Test","success0"); 
    geoCoder = new Geocoder(MapActivity.this, Locale.getDefault()); 

    TextView textView = (TextView) findViewById(R.id.textTitle); 
    textView.setText(getString(R.string.TITLE_REPORT)); 
    ListView list = (ListView) findViewById(R.id.listView1); 
    adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1); 
    list.setAdapter(adapter); 
    list.setOnItemClickListener(new OnItemClickListener() { 

     @Override 
     public void onItemClick(AdapterView<?> parent, View view, int position, 
           long id) { 
      String addressName = adapter.getItem(position); 
      adapter.clear(); 
      adapter.notifyDataSetChanged(); 
      ListView list = (ListView) findViewById(R.id.listView1); 
      list.setVisibility(View.GONE); 
      if ((addressSearchList == null) || (position >= addressSearchList.size())) 
       return; 
      Address address = addressSearchList.get(position); 
      googleMap.clear(); 
      LatLng latLng = new LatLng(address.getLatitude(), address.getLongitude()); 
      Marker marker = googleMap.addMarker(new MarkerOptions() 
        .position(latLng) 
        .title(addressName) 
        .snippet(getString(R.string.CONFIRM)) 
      ); 
      marker.showInfoWindow(); 
      googleMap.moveCamera(CameraUpdateFactory.newLatLng(latLng)); 
     } 

    }); 

    ImageView imageView = (ImageView) findViewById(R.id.btnCancelSearch); 
    imageView.setOnClickListener(new OnClickListener() { 

     @Override 
     public void onClick(View v) { 
      EditText editText = (EditText) findViewById(R.id.editText1); 
      editText.setText(""); 
      editText.clearFocus(); 
      adapter.clear(); 
      adapter.notifyDataSetChanged(); 
      ListView list = (ListView) findViewById(R.id.listView1); 
      list.setVisibility(View.GONE); 
      try { 
       InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE); 
       imm.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(), 0); 
      } catch (Exception e) { 

      } 
     } 
    }); 

    EditText editText = (EditText) findViewById(R.id.editText1); 
    editText.setOnEditorActionListener(new OnEditorActionListener() { 

     @Override 
     public boolean onEditorAction(TextView v, int actionId, KeyEvent event) { 
      if ((actionId == EditorInfo.IME_ACTION_SEARCH) && (v.getText().length() > 0)) { 
       //Log.d("TEST", "onEditorAction"); 
       try { 
        InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE); 
        imm.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(), 0); 
       } catch (Exception e) { 

       } 
       String locationName = v.getText().toString(); 
       new SearchAddressTask(locationName).execute(); 
      } 
      return false; 
     } 
    }); 

    int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this); 
    if (status != ConnectionResult.SUCCESS) { 
     //Log.d("TEST", "not success"); 
    } else { 
     SupportMapFragment fm = (SupportMapFragment) getSupportFragmentManager().findFragmentByTag("mapClinic"); 
     Log.d("Test","success1"); 
     fm.getMapAsync(MapActivity.this); 
     Log.d("Test","success2"); 
    } 
} 



@Override 
public void onMapReady(GoogleMap googleMap) { 
    ///final GoogleMap googleMaps=googleMap; 
    // Your code heregoogleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL); 


    googleMap.getUiSettings().setMyLocationButtonEnabled(true); 

    LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE); 
    Criteria criteria = new Criteria(); 
    //Log.d("TEST", clinic.getLongitude() + ":" + clinic.getLatitude()); 
    double latitude = 22.309994; 
    double longitude = 114.226036; 

    LatLng latLng = new LatLng(latitude, longitude); 
    googleMap.moveCamera(CameraUpdateFactory.newLatLng(latLng)); 
    googleMap.animateCamera(CameraUpdateFactory.zoomTo(10)); 

    googleMap.getUiSettings().setRotateGesturesEnabled(false); 
    googleMap.getUiSettings().setCompassEnabled(false); 


    final GoogleMap googleMapF= googleMap; 
    googleMap.setOnMapClickListener(new OnMapClickListener() { 

     @Override 
     public void onMapClick(LatLng point) { 
      googleMapF.clear(); 
      String address = ""; 
      //Geocoder geoCoder = new Geocoder(MapActivity.this, Locale.getDefault()); 
      try { 
       List<Address> addresses = geoCoder.getFromLocation(point.latitude, point.longitude, 1); 
       if (addresses.size() <= 0) 
        return; 
       //address = addresses.get(0).getAddressLine(1); 
       StringBuilder longAddress = new StringBuilder(); 
       String temp; 
       int j = 0; 
       while ((temp = addresses.get(0).getAddressLine(j++)) != null) { 
        longAddress.append(temp); 
       } 
       address = longAddress.toString(); 
       //EditText editText = (EditText) findViewById(R.id.textLocation); 
       //editText.setText(addresses.get(0).getFeatureName()); 

        /*addresses = geoCoder.getFromLocationName("�Ի��{", 10); 
        if (addresses.size() <= 0) { 
         Log.d("TEST", "can't find"); 
        } 
        else { 
         Log.d("TEST", addresses.toString()); 
         Log.d("TEST", "find it"); 
        }*/ 
      } catch (IOException e) { 
       //e.printStackTrace(); 
      } 
      Marker marker = googleMapF.addMarker(new MarkerOptions() 
        .position(point) 
        .title(address) 
        .snippet(getString(R.string.CONFIRM)) 
      ); 
      marker.showInfoWindow(); 
     } 
    }); 

    googleMap.setOnInfoWindowClickListener(new OnInfoWindowClickListener() { 

     @Override 
     public void onInfoWindowClick(Marker marker) { 
      LatLng point = marker.getPosition(); 
      Intent intent = new Intent(); 
      intent.putExtra("LatLng", point); 
      setResult(RESULT_OK, intent); 
      finish(); 
     } 
    }); 

    if(ContextCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) { 
     Log.d("Test","success3...1"); 
     ActivityCompat.requestPermissions(this, new String[] { android.Manifest.permission.ACCESS_COARSE_LOCATION }, 
       MY_PERMISSION_ACCESS_COARSE_LOCATION); 
    } 

    String provider = locationManager.getBestProvider(criteria, false); 
    if (provider == null){ 
     Log.d("Test","success3"); 
     return; 
    } 
    Log.d("Test","success3.1"); 

    Location location = getLastKnownLocationS(); 
    //Location location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER); 
    Log.d("Test", "success4"); 
    if (location != null) { 
     Log.d("Test", "success5"); 
     LatLng point = new LatLng(location.getLatitude(), location.getLongitude()); 
     Log.d("Test", "success6"); 
     googleMap.clear(); 
     String address = ""; 
     Geocoder geoCoder = new Geocoder(MapActivity.this, Locale.getDefault()); 
     Log.d("Test", "success7"); 
     try { 
      List<Address> addresses = geoCoder.getFromLocation(point.latitude, point.longitude, 1); 
      if (addresses.size() <= 0) 
       return; 
      //address = addresses.get(0).getAddressLine(1); 
      StringBuilder longAddress = new StringBuilder(); 
      String temp; 
      int j = 0; 
      Log.d("Test", "success8"); 
      while ((temp = addresses.get(0).getAddressLine(j++)) != null) { 
       longAddress.append(temp); 
      } 
      address = longAddress.toString(); 
      Log.d("Test", "success9"); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 
     Log.d("Test", "success10"); 
     Marker marker = googleMap.addMarker(new MarkerOptions() 
       .position(point) 
       .title(address) 
       .snippet(getString(R.string.CONFIRM)) 
     ); 
     Log.d("Test", "success11"); 
     marker.showInfoWindow(); 
     Log.d("Test", "success12.1"); 
     onLocationChanged(location); 
     Log.d("Test", "success12.2"); 
    } 
    locationManager.requestLocationUpdates(provider, 10000, 0, this); 
    Log.d("Test", "success13"); 
} 

private Location getLastKnownLocationS() { 
    LocationManager mLocationManager = (LocationManager)getApplicationContext().getSystemService(LOCATION_SERVICE); 
    List<String> providers = mLocationManager.getProviders(true); 
    Location bestLocation = null; 
    if(ContextCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) { 
     Log.d("Test","success3...2"); 
     ActivityCompat.requestPermissions(this, new String[] { android.Manifest.permission.ACCESS_COARSE_LOCATION }, 
       MY_PERMISSION_ACCESS_COARSE_LOCATION); 
    } 
    for (String provider : providers) { 



     Location l = mLocationManager.getLastKnownLocation(provider); 
     if (l == null) { 
      continue; 
     } 
     if (bestLocation == null || l.getAccuracy() < bestLocation.getAccuracy()) { 
      // Found best last known location: %s", l); 
      bestLocation = l; 
     } 
    } 
    Log.d("Test","success_async"); 
    return bestLocation; 
} 

die Fehlerteile aktualisiert, bitte helfen, danke, für die Fehler in OnLocationChanged Methode, Dank auftreten erinnert.

Fehler Teile aktualisiert, bitte helfen, vielen Dank für die Fehler in OnLocationChanged Methode, Dank

@Override 
    public void onLocationChanged(Location location) { 
     double latitude = location.getLatitude(); 
     double longitude = location.getLongitude(); 
     LatLng latLng = new LatLng(latitude, longitude); 
     Log.d("Test","onLocationChange"); 
     googleMap.moveCamera(CameraUpdateFactory.newLatLng(latLng)); 
     googleMap.animateCamera(CameraUpdateFactory.zoomTo(15)); 
    } 

und Debugger unter Fehler auftreten erinnert:

10-26 08:47:12.493 26361-26361/com.afcd.redtidesystem E/AndroidRuntime: FATAL EXCEPTION: main 
                     Process: com.afcd.redtidesystem, PID: 26361 
                     java.lang.NullPointerException: Attempt to invoke virtual method 'void com.google.android.gms.maps.GoogleMap.moveCamera(com.google.android.gms.maps.CameraUpdate)' on a null object reference 
                      at com.afcd.redtidesystem.MapActivity.onLocationChanged(MapActivity.java:379) 
                      at com.afcd.redtidesystem.MapActivity.onMapReady(MapActivity.java:329) 
                      at com.google.android.gms.maps.zzaj.zza(Unknown Source) 
                      at com.google.android.gms.maps.internal.zzaq.onTransact(Unknown Source) 
                      at android.os.Binder.transact(Binder.java:499) 
                      at gl.b(:com.google.android.gms.DynamiteModulesB@11518470:20) 
                      at com.google.android.gms.maps.internal.bf.a(:com.google.android.gms.DynamiteModulesB@11518470:5) 
                      at com.google.maps.api.android.lib6.impl.bc.run(:com.google.android.gms.DynamiteModulesB@11518470:5) 
                      at android.os.Handler.handleCallback(Handler.java:751) 
                      at android.os.Handler.dispatchMessage(Handler.java:95) 
                      at android.os.Looper.loop(Looper.java:154) 
                      at android.app.ActivityThread.main(ActivityThread.java:6077) 
                      at java.lang.reflect.Method.invoke(Native Method) 
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866) 
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:756) 

Answer 1

1-Fügen Sie diese Zeile in onCreate() -Methode, wenn Sie Ihre Karte aus dem Kartenfragment erhalten

SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager() .findFragmentById (R.id.map); mapFragment.getMapAsync (this);

2- Kommentar- Ihre erste Linie in onMapReady() -Methode

Answer 2

i Code geändert haben, versuchen Sie dieses, wenn Fehler in onLocationChangd kommt()

@Override public void OnLocationChanged (Lage, Lage) {

if (Location! = null) {

// Ihr Code hier

} }

Answer 3

versuchen diese

CameraUpdate center= 
     CameraUpdateFactory.newLatLng(new LatLng(73.35687586412547, 
               -45.77172998180484)); 
    CameraUpdate zoom=CameraUpdateFactory.zoomTo(10); 

    map.moveCamera(center); 
    map.animateCamera(zoom); 

lassen Sie mich wissen, ob eine Abfrage