Java 为什么我的地图在收到位置许可后没有初始化？
用户第一次打开my MapsActivity时，会要求他们获得位置权限。然后它应该在不同的位置用标记启动我的卫星视图地图。但是，它会打开一个没有“我的标记”的通用谷歌地图，但是如果您退出该活动，并在授予位置权限后再次启动该活动，则效果良好。我很确定它没有调用initMap（）函数，因此也没有调用onMapReady（GoogleMap，GoogleMap）函数，在该函数中，地图被设置为卫星视图并添加了标记。我很确定在我的onRequestPermissionsResult（）函数中，它没有在应该调用initMap（）函数的时候调用它，但我不知道为什么Java 为什么我的地图在收到位置许可后没有初始化？,java,android,android-permissions,fusedlocationproviderclient,Java,Android,Android Permissions,Fusedlocationproviderclient,用户第一次打开my MapsActivity时，会要求他们获得位置权限。然后它应该在不同的位置用标记启动我的卫星视图地图。但是，它会打开一个没有“我的标记”的通用谷歌地图，但是如果您退出该活动，并在授予位置权限后再次启动该活动，则效果良好。我很确定它没有调用initMap（）函数，因此也没有调用onMapReady（GoogleMap，GoogleMap）函数，在该函数中，地图被设置为卫星视图并添加了标记。我很确定在我的onRequestPermissionsResult（）函数中，它没有在应该
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback, GoogleMap.OnMapClickListener {
@Override
public void onMapReady(GoogleMap googleMap) {
Toast.makeText(this, "Map is Ready", Toast.LENGTH_SHORT).show();
mMap = googleMap;
Log.d("map", mMap.toString());
mMap.setMapType(GoogleMap.MAP_TYPE_HYBRID);
if (mLocationPermissionsGranted) {
Log.d("map", "location permission granted");
getDeviceLocation();
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
mMap.setMyLocationEnabled(true);
mMap.getUiSettings().setMyLocationButtonEnabled(false);
this.mMap.setOnMapClickListener(this);
init();
}
myReference = FirebaseDatabase.getInstance().getReference().child("garbageSpots");
myReference.addValueEventListener(stateValueEventListener4 = new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
for (DataSnapshot children : dataSnapshot.getChildren()) {
LatLng coords = new LatLng(Double.parseDouble(children.child("lat").getValue().toString()), Double.parseDouble(children.child("long").getValue().toString()));
MarkerOptions options = new MarkerOptions().title(children.getKey()).position(coords);
mMap.addMarker(options);
Log.d("map", "marker for loop");
}
Log.d("map", "end of mk for loop");
myReference.removeEventListener(stateValueEventListener4);
}
@Override
public void onCancelled(DatabaseError databaseError) {
System.out.println("The read failed: " + databaseError.getCode());
}
});
mMap.setOnMarkerClickListener(new GoogleMap.OnMarkerClickListener() {
@Override
public boolean onMarkerClick(Marker marker) {
Intent i = new Intent(MapsActivity.this, InfoWindowActivity.class);
LatLng latLng = marker.getPosition();
String title = marker.getTitle();
i.putExtra("location", latLng);
i.putExtra("title", title);
startActivity(i);
return false;
}
});
}
private static final String FINE_LOCATION = Manifest.permission.ACCESS_FINE_LOCATION;
private static final String COURSE_LOCATION = Manifest.permission.ACCESS_COARSE_LOCATION;
private static final int LOCATION_PERMISSION_REQUEST_CODE = 1234;
private static final float DEFAULT_ZOOM = 15f;
private DatabaseReference myReference;
private ValueEventListener stateValueEventListener4;
private EditText mSearchText;
private ImageView mGps;
private Boolean mLocationPermissionsGranted = false;
private GoogleMap mMap;
private FusedLocationProviderClient mFusedLocationProviderClient;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
mSearchText = findViewById(R.id.inputSearch);
mGps = findViewById(R.id.ic_gps);
Log.d("map", "onCreate");
getLocationPermission();
}
private void init(){
Log.d("map", "init now");
mSearchText.setOnEditorActionListener(new TextView.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView textView, int actionId, KeyEvent keyEvent) {
if(actionId == EditorInfo.IME_ACTION_SEARCH
|| actionId == EditorInfo.IME_ACTION_DONE
|| keyEvent.getAction() == KeyEvent.ACTION_DOWN
|| keyEvent.getAction() == KeyEvent.KEYCODE_ENTER){
Log.d("map", "actionId in init");
geoLocate();
}
return false;
}
});
mGps.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
getDeviceLocation();
}
});
hideSoftKeyboard();
}
private void geoLocate() {
Log.d("map", "geoLocate start");
String searchString = mSearchText.getText().toString();
Geocoder geocoder = new Geocoder(MapsActivity.this);
List<Address> list = new ArrayList<>();
try{
list = geocoder.getFromLocationName(searchString, 1);
}catch (IOException e){
Log.d("map", "geoLocate catch error");
}
if(list.size() > 0){
Address address = list.get(0);
moveCamera(new LatLng(address.getLatitude(), address.getLongitude()), DEFAULT_ZOOM,
address.getAddressLine(0));
}
}
private void getDeviceLocation(){
mFusedLocationProviderClient = LocationServices.getFusedLocationProviderClient(MapsActivity.this);
try{
if(mLocationPermissionsGranted){
final Task location = mFusedLocationProviderClient.getLastLocation();
Log.d("map", "GDL mLPG");
location.addOnCompleteListener(new OnCompleteListener() {
@Override
public void onComplete(@NonNull Task task) {
Log.d("map", "GDL on complete");
if(task.isSuccessful()){
Log.d("map", "GDL on success");
Location currentLocation = (Location)task.getResult();
moveCamera(new LatLng(currentLocation.getLatitude(), currentLocation.getLongitude()),
DEFAULT_ZOOM,
"My Location");
}else{
Toast.makeText(MapsActivity.this, "unable to get current location", Toast.LENGTH_SHORT).show();
}
}
});
}
}catch (SecurityException e){
Log.d("map", "getDeviceLocation catch error");
}
}
private void moveCamera(LatLng latLng, float zoom, String title){
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(latLng, zoom));
if(!title.equals("My Location")){
MarkerOptions options = new MarkerOptions()
.position(latLng)
.title(title);
mMap.addMarker(options);
}
hideSoftKeyboard();
}
private void initMap(){
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
Log.d("map", mapFragment + " initMap");
mapFragment.getMapAsync(MapsActivity.this);
}
private void getLocationPermission(){
Log.d("map", "getLocationPermission start");
String[] permissions = {Manifest.permission.ACCESS_FINE_LOCATION,
Manifest.permission.ACCESS_COARSE_LOCATION};
if(ContextCompat.checkSelfPermission(this.getApplicationContext(),
FINE_LOCATION) == PackageManager.PERMISSION_GRANTED){
Log.d("map", "first if");
if(ContextCompat.checkSelfPermission(this.getApplicationContext(),
COURSE_LOCATION) == PackageManager.PERMISSION_GRANTED){
Log.d("map", "second if");
mLocationPermissionsGranted = true;
Log.d("map", mLocationPermissionsGranted.toString() + " mLPG string");
initMap();
}else{
ActivityCompat.requestPermissions(this,
permissions,
LOCATION_PERMISSION_REQUEST_CODE);
Log.d("map", "second if failed");
}
}else{
Log.d("map", "first if failed");
ActivityCompat.requestPermissions(this,
permissions,
LOCATION_PERMISSION_REQUEST_CODE);
Log.d("map", String.valueOf(LOCATION_PERMISSION_REQUEST_CODE) + " location permission request code");
}
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
Log.d("map", "ORPR");
mLocationPermissionsGranted = false;
switch (requestCode) {
case LOCATION_PERMISSION_REQUEST_CODE: {
if (grantResults.length > 0) {
for(int i = 0; i < grantResults.length; i++){
if(grantResults[i] != PackageManager.PERMISSION_GRANTED){
Log.d("map", String.valueOf(grantResults[i]));
Log.d("map", "false permission");
mLocationPermissionsGranted = false;
return;
}
}
mLocationPermissionsGranted = true;
Log.d("map", "initORPR");
initMap();
}
}
}
}
}
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.garbagespots.garbagespotsapp">
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity
android:name=".InstructionsActivity"
android:parentActivityName=".HomePage"
android:screenOrientation="portrait"/>
<activity
android:name=".PictureActivity"
android:parentActivityName=".InfoWindowActivity"
android:screenOrientation="portrait" />
<activity
android:name=".ReportActivity"
android:parentActivityName=".InfoWindowActivity"
android:screenOrientation="portrait" />
<activity
android:name=".CleanedUpActivity"
android:parentActivityName=".InfoWindowActivity"
android:screenOrientation="portrait" />
<activity
android:name=".InfoWindowActivity"
android:parentActivityName=".MapsActivity"
android:screenOrientation="portrait" />
<activity
android:name=".SignupActivity"
android:parentActivityName=".WelcomeActivity"
android:screenOrientation="portrait" />
<activity
android:name=".WelcomeActivity"
android:screenOrientation="portrait">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".SpotAdderActivity"
android:label="@string/title_activity_spot_adder"
android:parentActivityName=".MapsActivity"
android:screenOrientation="portrait" />
<activity
android:name=".ProfileActivity"
android:label="@string/title_activity_profile"
android:parentActivityName=".HomePage"
android:screenOrientation="portrait" />
<activity
android:name=".HomePage"
android:screenOrientation="portrait" />
<activity
android:name=".LoginActivity"
android:label="@string/title_activity_login"
android:parentActivityName=".WelcomeActivity"
android:screenOrientation="portrait" />
<meta-data
android:name="com.google.android.geo.API_KEY"
android:value="AIzaSyAF4V4wLa4OioU_taKsh59BfTVs1i02vgA" />
<activity
android:name=".MapsActivity"
android:label="@string/title_activity_maps"
android:parentActivityName=".InstructionsActivity"
android:screenOrientation="portrait"/>
</application>
</manifest>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
在我的清单中，它起作用了请显示您的清单我添加了它@SarahKhanManifest.permission.ACCESS\u rough\u位置，它在您的清单中的什么位置？标签用于JS API v3。从你的问题中删除这个。今后，请确保您的问题使用适当的标签。
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />