我正在尝试获取设备位置并在Google地图上添加标记。如果我在虚拟设备上启动我的应用程序，它会在日志中显示我在美国的一个不寻常的位置（但我住在意大利）但不是地图和标记，当我在物理设备上启动应用程序时，它没有找到位置，但我可以在地图上看到坐标0纬度和0经度的标记。
这是我的MainActivity：
public class MainActivity extends AppCompatActivity {
private Toolbar toolbar;
private TabLayout tabLayout;
private ViewPager viewPager;
private LocationManager locationManager;
private LocationListener locationListener;
private double latitudine;
private double longitudine;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
locationManager = (LocationManager) this.getSystemService(LOCATION_SERVICE);
locationListener = new LocationListener() {
@Override
public void onLocationChanged(Location location) {
Log.d("Location: ", location.toString());
latitudine = location.getLatitude();
longitudine = location.getLongitude();
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onProviderDisabled(String provider) {
}
};
if (Build.VERSION.SDK_INT < 23) {
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);
}else{
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(this,new String[]{Manifest.permission.ACCESS_FINE_LOCATION},1);
}else{
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);
}
}
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(false);
viewPager = (ViewPager) findViewById(R.id.viewpager);
setupViewPager(viewPager);
tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
tabLayout.getTabAt(0).setIcon(R.drawable.drone);
tabLayout.getTabAt(1).setIcon(R.drawable.maps);
tabLayout.getTabAt(2).setIcon(R.drawable.registracion);
tabLayout.getTabAt(3).setIcon(R.drawable.meteo);
tabLayout.getTabAt(4).setIcon(R.drawable.user);
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if(grantResults.length>0 && grantResults[0]== PackageManager.PERMISSION_GRANTED){
if(ContextCompat.checkSelfPermission(this,Manifest.permission.ACCESS_FINE_LOCATION)==PackageManager.PERMISSION_GRANTED){
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);
}
}
}
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFragment(new FirstFragment(), "");
adapter.addFragment(new SecondFragment(latitudine,longitudine), "");
adapter.addFragment(new ThirdFragment(), "");
adapter.addFragment(new FourthFragment(), "");
adapter.addFragment(new FifthFragment(), "");
viewPager.setAdapter(adapter);
}
class ViewPagerAdapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public ViewPagerAdapter(FragmentManager manager) {
super(manager);
}
@Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
@Override
public int getCount() {
return mFragmentList.size();
}
public void addFragment(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
@Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
}
那是SecondFragment，是应该是地图的片段：
public class SecondFragment extends Fragment implements OnMapReadyCallback {
private GoogleMap mGoogleMap;
private MapView mMapView;
private View mView;
private LatLng position;
public SecondFragment() {
}
@SuppressLint("ValidFragment")
public SecondFragment(double lat, double lon){
position = new LatLng(lat,lon);
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
mView = inflater.inflate(R.layout.fragment_second, container, false);
return mView;
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
mMapView = (MapView) mView.findViewById(R.id.mapGoogle);
if (mMapView != null) {
mMapView.onCreate(null);
mMapView.onResume();
mMapView.getMapAsync(this);
}
}
@Override
public void onMapReady(GoogleMap googleMap) {
MapsInitializer.initialize(getContext());
mGoogleMap = googleMap;
googleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
googleMap.addMarker(new MarkerOptions().position(position));
}
}
这是我在物理设备上启动应用程序时的运行：
06/13 13:57:10: Launching app
$ adb install-multiple -r -t C:\Users\utente\AndroidStudioProjects\DroneMaster2\app\build\intermediates\split-apk\debug\dep\dependencies.apk C:\Users\utente\AndroidStudioProjects\DroneMaster2\app\build\intermediates\split-apk\debug\slices\slice_0.apk C:\Users\utente\AndroidStudioProjects\DroneMaster2\app\build\intermediates\split-apk\debug\slices\slice_2.apk C:\Users\utente\AndroidStudioProjects\DroneMaster2\app\build\intermediates\split-apk\debug\slices\slice_1.apk C:\Users\utente\AndroidStudioProjects\DroneMaster2\app\build\intermediates\split-apk\debug\slices\slice_4.apk C:\Users\utente\AndroidStudioProjects\DroneMaster2\app\build\intermediates\split-apk\debug\slices\slice_3.apk C:\Users\utente\AndroidStudioProjects\DroneMaster2\app\build\intermediates\split-apk\debug\slices\slice_5.apk C:\Users\utente\AndroidStudioProjects\DroneMaster2\app\build\intermediates\split-apk\debug\slices\slice_6.apk C:\Users\utente\AndroidStudioProjects\DroneMaster2\app\build\intermediates\split-apk\debug\slices\slice_7.apk C:\Users\utente\AndroidStudioProjects\DroneMaster2\app\build\intermediates\split-apk\debug\slices\slice_8.apk C:\Users\utente\AndroidStudioProjects\DroneMaster2\app\build\intermediates\split-apk\debug\slices\slice_9.apk C:\Users\utente\AndroidStudioProjects\DroneMaster2\app\build\intermediates\instant-run-apk\debug\app-debug.apk
Split APKs installed
$ adb shell am start -n "com.example.utente.dronemaster/com.example.utente.dronemaster.MainActivity" -a android.intent.action.MAIN -c android.intent.category.LAUNCHER
Client not ready yet..Connected to process 18521 on device huawei-ale_l21-QLF7N16A10004648
Capturing and displaying logcat messages from application. This behavior can be disabled in the "Logcat output" section of the "Debugger" settings page.
I/FirebaseInitProvider: FirebaseApp initialization unsuccessful
I/InstantRun: starting instant run server: is main process
I/art: Can not find class: Landroid/view/SearchEvent;
W/art: Before Android 4.1, method android.graphics.PorterDuffColorFilter
android.support.graphics.drawable.VectorDrawableCompat.updateTintFilter(android.graphics.PorterDuffColorFilter, android.content.res.ColorStateList, android.graphics.PorterDuff$Mode) would have incorrectly overridden the package-private method in android.graphics.drawable.Drawable
I/art: Can not find class: Landroid/widget/ViewStub;
Can not find class: Landroid/webkit/ViewStub;
Can not find class: Landroid/app/ViewStub;
W/Resources: Converting to string: TypedValue{t=0x12/d=0x0 a=3 r=0x7f09000a}
Converting to string: TypedValue{t=0x12/d=0x0 a=3 r=0x7f090015}
W/Resources: Converting to string: TypedValue{t=0x12/d=0x0 a=3 r=0x7f090008}
W/Resources: Converting to string: TypedValue{t=0x1/d=0x7f0f0132 a=-1 r=0x7f0f0132}
W/Resources: Converting to string: TypedValue{t=0x12/d=0x0 a=3 r=0x7f09012e}
Converting to string: TypedValue{t=0x1d/d=0xff125688 a=3 r=0x7f060032}
Converting to string: TypedValue{t=0x5/d=0x1 a=3 r=0x7f070004}
Converting to string: TypedValue{t=0x5/d=0x1 a=3 r=0x7f070003}
Converting to string: TypedValue{t=0x5/d=0x3801 a=1 r=0x10500c9}
W/Resources: Converting to string: TypedValue{t=0x12/d=0x0 a=3 r=0x7f09011a}
W/Resources: Converting to string: TypedValue{t=0x12/d=0x0 a=3 r=0x7f09013c}
I/HwCust: Constructor found for class android.widget.HwCustTextViewImpl
I/art: Can not find class: Landroid/text/StaticLayout$Builder;
I/OpenGLRenderer: Initialized EGL, version 1.4
W/Resources: Converting to string: TypedValue{t=0x5/d=0x2401 a=1 r=0x10500ce}
Converting to string: TypedValue{t=0x5/d=0x3001 a=1 r=0x10500d0}
W/art: Before Android 4.1, method int android.support.v7.widget.DropDownListView.lookForSelectablePosition(int, boolean) would have incorrectly overridden the package-private method in android.widget.ListView
这是我在虚拟设备上启动应用程序时的运行：
06/13 14:05:11: Launching app
$ adb install-multiple -r -t C:\Users\utente\AndroidStudioProjects\DroneMaster2\app\build\intermediates\resources\instant-run\debug\resources-debug.apk C:\Users\utente\AndroidStudioProjects\DroneMaster2\app\build\intermediates\split-apk\debug\dep\dependencies.apk C:\Users\utente\AndroidStudioProjects\DroneMaster2\app\build\intermediates\split-apk\debug\slices\slice_1.apk C:\Users\utente\AndroidStudioProjects\DroneMaster2\app\build\intermediates\split-apk\debug\slices\slice_2.apk C:\Users\utente\AndroidStudioProjects\DroneMaster2\app\build\intermediates\split-apk\debug\slices\slice_0.apk C:\Users\utente\AndroidStudioProjects\DroneMaster2\app\build\intermediates\split-apk\debug\slices\slice_3.apk C:\Users\utente\AndroidStudioProjects\DroneMaster2\app\build\intermediates\split-apk\debug\slices\slice_4.apk C:\Users\utente\AndroidStudioProjects\DroneMaster2\app\build\intermediates\split-apk\debug\slices\slice_5.apk C:\Users\utente\AndroidStudioProjects\DroneMaster2\app\build\intermediates\split-apk\debug\slices\slice_6.apk C:\Users\utente\AndroidStudioProjects\DroneMaster2\app\build\intermediates\split-apk\debug\slices\slice_8.apk C:\Users\utente\AndroidStudioProjects\DroneMaster2\app\build\intermediates\split-apk\debug\slices\slice_7.apk C:\Users\utente\AndroidStudioProjects\DroneMaster2\app\build\intermediates\split-apk\debug\slices\slice_9.apk C:\Users\utente\AndroidStudioProjects\DroneMaster2\app\build\intermediates\instant-run-apk\debug\app-debug.apk
Split APKs installed
$ adb shell am start -n "com.example.utente.dronemaster/com.example.utente.dronemaster.MainActivity" -a android.intent.action.MAIN -c android.intent.category.LAUNCHER
Client not ready yet..Waiting for process to come online
Connected to process 8921 on device Nexus_5X_API_27 [emulator-5554]
Capturing and displaying logcat messages from application. This behavior can be disabled in the "Logcat output" section of the "Debugger" settings page.
I/FirebaseInitProvider: FirebaseApp initialization unsuccessful
I/InstantRun: starting instant run server: is main process
I/zygote: NativeAlloc concurrent copying GC freed 2734(736KB) AllocSpace objects, 0(0B) LOS objects, 52% free, 1386KB/2MB, paused 16.542ms total 83.193ms
D/OpenGLRenderer: HWUI GL Pipeline
D/Location:: Location[gps 37.421998,-122.084000 hAcc=20 et=+2h46m24s907ms alt=0.0 vAcc=??? sAcc=??? bAcc=??? {Bundle[mParcelledData.dataSize=96]}]
W/GooglePlayServicesUtil: Google Play services out of date. Requires 12211000 but found 11580470
I/chatty: uid=10080(com.example.utente.dronemaster) identical 3 lines
W/GooglePlayServicesUtil: Google Play services out of date. Requires 12211000 but found 11580470
D/: HostConnection::get() New Host Connection established 0xa20a4dc0, tid 8947
I/zygote: android::hardware::configstore::V1_0::ISurfaceFlingerConfigs::hasWideColorDisplay retrieved: 0
I/OpenGLRenderer: Initialized EGL, version 1.4
D/OpenGLRenderer: Swap behavior 1
W/OpenGLRenderer: Failed to choose config with EGL_SWAP_BEHAVIOR_PRESERVED, retrying without...
D/OpenGLRenderer: Swap behavior 0
D/EGL_emulation: eglCreateContext: 0xa3a14960: maj 3 min 0 rcv 3
D/EGL_emulation: eglMakeCurrent: 0xa3a14960: ver 3 0 (tinfo 0xa113e210)
D/EGL_emulation: eglMakeCurrent: 0xa3a14960: ver 3 0 (tinfo 0xa113e210)
D/Location:: Location[gps 37.421998,-122.084000 hAcc=20 et=+2h46m25s706ms alt=0.0 vAcc=??? sAcc=??? bAcc=??? {Bundle[mParcelledData.dataSize=96]}]
D/Location:: Location[gps 37.421998,-122.084000 hAcc=20 et=+2h46m35s707ms alt=0.0 vAcc=??? sAcc=??? bAcc=??? {Bundle[mParcelledData.dataSize=96]}]
D/Location:: Location[gps 37.421998,-122.084000 hAcc=20 et=+2h46m45s707ms alt=0.0 vAcc=??? sAcc=??? bAcc=??? {Bundle[mParcelledData.dataSize=96]}]
D/Location:: Location[gps 37.421998,-122.084000 hAcc=20 et=+2h46m55s708ms alt=0.0 vAcc=??? sAcc=??? bAcc=??? {Bundle[mParcelledData.dataSize=96]}]
D/Location:: Location[gps 37.421998,-122.084000 hAcc=20 et=+2h47m5s709ms alt=0.0 vAcc=??? sAcc=??? bAcc=??? {Bundle[mParcelledData.dataSize=96]}]
D/Location:: Location[gps 37.421998,-122.084000 hAcc=20 et=+2h47m15s710ms alt=0.0 vAcc=??? sAcc=??? bAcc=??? {Bundle[mParcelledData.dataSize=96]}]
答案 0 :(得分：0)
尝试使用此代码：
不要忘记在清单文件中添加权限
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
用以下方式实现您的课程：
实现LocationListener，GoogleApiClient.ConnectionCallbacks， ResultCallback， GoogleApiClient.OnConnectionFailedListener
protected GoogleApiClient mGoogleApiClient;
protected LocationRequest locationRequest;
String latitude = "";
String longitude = "";
@Override
public void onCreate(Bundle savedInstanceState) {
if (ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return rootView;
}
mGoogleApiClient = new GoogleApiClient.Builder(getActivity())
.addApi(LocationServices.API)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this).build();
mGoogleApiClient.connect();
locationRequest = LocationRequest.create();
locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
locationRequest.setInterval(30 * 1000);
locationRequest.setFastestInterval(5 * 1000);
LocationManager locationManager = (LocationManager) getActivity()
.getSystemService(Context.LOCATION_SERVICE);
Criteria locationCritera = new Criteria();
String providerName = locationManager.getBestProvider(locationCritera,
true);
if (providerName != null) {
try {
Location location = locationManager.getLastKnownLocation(providerName);
latitude = location.getLatitude() + "";
longitude = location.getLongitude() + "";
} catch (Exception e) {
latitude = "0";
longitude = "0";
}
}
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0,
0, NearByFragment.this);
}
@Override
public void onLocationChanged(Location location) {
latitude = String.valueOf(location.getLatitude());
longitude = String.valueOf(location.getLongitude());
Log.e("lat", latitude + "");
Log.e("log", longitude + "");
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onProviderDisabled(String provider) {
}
@Override
public void onConnected(@Nullable Bundle bundle) {
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
.addLocationRequest(locationRequest);
builder.setAlwaysShow(true);
PendingResult<LocationSettingsResult> result =
LocationServices.SettingsApi.checkLocationSettings(
mGoogleApiClient,
builder.build()
);
result.setResultCallback(this);
}
@Override
public void onConnectionSuspended(int i) {
}
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
}
@Override
public void onResult(@NonNull LocationSettingsResult locationSettingsResult) {
final Status status = locationSettingsResult.getStatus();
switch (status.getStatusCode()) {
case LocationSettingsStatusCodes.SUCCESS:
// NO need to show the dialog;
break;
case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
// Location settings are not satisfied. Show the user a dialog
try {
// Show the dialog by calling startResolutionForResult(), and check the result
// in onActivityResult().
status.startResolutionForResult(getActivity(), 100);
} catch (Exception e) {
//failed to show
}
break;
case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
// Location settings are unavailable so not possible to show any dialog now
break;
}
}
public class MainActivity extends AppCompatActivity implements LocationListener, GoogleApiClient.ConnectionCallbacks, ResultCallback, GoogleApiClient.OnConnectionFailedListener{
private Toolbar toolbar;
private TabLayout tabLayout;
private ViewPager viewPager;
private LocationManager locationManager;
private LocationListener locationListener;
private double latitudine;
private double longitudine;
protected GoogleApiClient mGoogleApiClient;
protected LocationRequest locationRequest;
String latitude = "";
String longitude = "";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (ActivityCompat.checkSelfPermission(MainActivity.this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(MainActivity.this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
Toast.makeText(getActivity(), "Permission Error...", Toast.LENGTH_LONG).show();
return ;
}
mGoogleApiClient = new GoogleApiClient.Builder(MainActivity.this)
.addApi(LocationServices.API)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this).build();
mGoogleApiClient.connect();
locationRequest = LocationRequest.create();
locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
locationRequest.setInterval(30 * 1000);
locationRequest.setFastestInterval(5 * 1000);
LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
Criteria locationCritera = new Criteria();
String providerName = locationManager.getBestProvider(locationCritera,
true);
if (providerName != null) {
try {
Location location = locationManager.getLastKnownLocation(providerName);
latitude = location.getLatitude() + "";
longitude = location.getLongitude() + "";
} catch (Exception e) {
latitude = "0";
longitude = "0";
}
}
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0,
0, MainActivity.this);
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(false);
viewPager = (ViewPager) findViewById(R.id.viewpager);
setupViewPager(viewPager);
tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
tabLayout.getTabAt(0).setIcon(R.drawable.drone);
tabLayout.getTabAt(1).setIcon(R.drawable.maps);
tabLayout.getTabAt(2).setIcon(R.drawable.registracion);
tabLayout.getTabAt(3).setIcon(R.drawable.meteo);
tabLayout.getTabAt(4).setIcon(R.drawable.user);
}
// @Override
// public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
// super.onRequestPermissionsResult(requestCode, permissions, grantResults);
// if(grantResults.length>0 && grantResults[0]== PackageManager.PERMISSION_GRANTED){
// if(ContextCompat.checkSelfPermission(this,Manifest.permission.ACCESS_FINE_LOCATION)==PackageManager.PERMISSION_GRANTED){
// locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);
// }
// }
// }
@Override
public void onLocationChanged(Location location) {
latitude = String.valueOf(location.getLatitude());
longitude = String.valueOf(location.getLongitude());
Log.e("lat", latitude + "");
Log.e("log", longitude + "");
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onProviderDisabled(String provider) {
}
@Override
public void onConnected(@Nullable Bundle bundle) {
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
.addLocationRequest(locationRequest);
builder.setAlwaysShow(true);
PendingResult<LocationSettingsResult> result =
LocationServices.SettingsApi.checkLocationSettings(
mGoogleApiClient,
builder.build()
);
result.setResultCallback(this);
}
@Override
public void onConnectionSuspended(int i) {
}
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
}
@Override
public void onResult(@NonNull LocationSettingsResult locationSettingsResult) {
final Status status = locationSettingsResult.getStatus();
switch (status.getStatusCode()) {
case LocationSettingsStatusCodes.SUCCESS:
// NO need to show the dialog;
break;
case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
// Location settings are not satisfied. Show the user a dialog
try {
// Show the dialog by calling startResolutionForResult(), and check the result
// in onActivityResult().
status.startResolutionForResult(getActivity(), 100);
} catch (Exception e) {
//failed to show
}
break;
case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
// Location settings are unavailable so not possible to show any dialog now
break;
}
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFragment(new FirstFragment(), "");
adapter.addFragment(new SecondFragment(latitudine,longitudine), "");
adapter.addFragment(new ThirdFragment(), "");
adapter.addFragment(new FourthFragment(), "");
adapter.addFragment(new FifthFragment(), "");
viewPager.setAdapter(adapter);
}
class ViewPagerAdapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public ViewPagerAdapter(FragmentManager manager) {
super(manager);
}
@Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
@Override
public int getCount() {
return mFragmentList.size();
}
public void addFragment(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
@Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
}
答案 1 :(得分：0)
当您在虚拟设备上运行GPS时，您需要通过虚拟设备侧栏上的“更多”设置自行输入GPS线。