我正在开发一款应用，我在这里使用谷歌地图。谷歌地图显示当前位置到其他设备，但它没有显示棉花糖的当前位置（6.0）。
在marshmallow（6.0）中，当我打开应用程序时，它显示地图但不显示当前位置。
我想在打开应用时显示所有设备中的谷歌地图当前位置，地图必须显示当前位置。
我该怎么做？
java file
public class Maps_Activity extends FragmentActivity implements
OnMapReadyCallback,
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener,
GoogleMap.OnMarkerDragListener,
GoogleMap.OnMapLongClickListener,
View.OnClickListener {
//Our Map
private GoogleMap mMap;
public static final int REQUEST_ID_ACCESS_COURSE_FINE_LOCATION = 100;
//To store longitude and latitude from map
private double longitude;
private double latitude;
String caddress;
//Buttons
private ImageButton buttonSave;
private ImageButton buttonCurrent;
private ImageButton buttonView;
private Button btnProceed, btnskip, btnClocation;
String strAdd;
TextView tvmap,textview;
private boolean loggedIn = false;
public static String email;
private ProgressDialog myProgress;
//Google ApiClient
private GoogleApiClient googleApiClient;
SupportMapFragment mapFragment;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
tvmap=(TextView)findViewById(R.id.tv_map);
textview=(TextView)findViewById(R.id.textView_euser);
//progress bar
myProgress = new ProgressDialog(this);
myProgress.setTitle("Map Loading ...");
myProgress.setMessage("Please wait...");
myProgress.setCancelable(true);
// Display Progress Bar.
myProgress.show();
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
//Initializing googleapi client
googleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
//googleapi gps
/* googleApiClient = new GoogleApiClient
.Builder(this)
.enableAutoManage(this, 34992, this)
.addApi(LocationServices.API)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.build();
locationChecker(googleApiClient, MapsActivity.this); */
//Initializing views and adding onclick listeners
btnProceed=(Button)findViewById(R.id.button_proceed);
btnskip=(Button)findViewById(R.id.button_skip);
// btnClocation=(Button)findViewById(R.id.button_clocation);
btnProceed.setOnClickListener(this);
btnskip.setOnClickListener(this);
// btnClocation.setOnClickListener(this);
SharedPreferences sharedPreferences = getSharedPreferences(Config.SHARED_PREF_NAME, Context.MODE_PRIVATE);
loggedIn = sharedPreferences.getBoolean(Config.LOGGEDIN_SHARED_PREF, false);
email = sharedPreferences.getString(Config.EMAIL_SHARED_PREF, "Not Available");
textview.setText(email);
}
@Override
protected void onResume() {
LocationManager mlocManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
boolean enabled = mlocManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
if(!enabled) {
showDialogGPS();
}
super.onResume();
}
private void showDialogGPS() {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setCancelable(false);
builder.setTitle("Enable GPS");
builder.setMessage("Please enable GPS");
builder.setInverseBackgroundForced(true);
builder.setPositiveButton("Enable", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
startActivity(
new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS));
getCurrentLocation();
moveMap();
}
});
builder.setNegativeButton("Ignore", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
AlertDialog alert = builder.create();
alert.show();
}
@Override
public void onClick(View v) {
if(v == btnProceed){
// getCurrentLocation();
// moveMap();
if (loggedIn) {
//We will start the Profile Activity
submitForm();
Intent i=new Intent(Maps_Activity.this,Search_ActivityND.class);
startActivity(i);
}
}
else if(v == btnskip){
btnclick_skip();
}
}
//dalete alert
private void btnclick_skip(){
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(this);
alertDialogBuilder.setMessage("Are you fine this Location?");
alertDialogBuilder.setPositiveButton("Yes",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface arg0, int arg1) {
// new JSONParserD().execute();
//Starting login activity
Intent intent = new Intent(Maps_Activity.this, Search_ActivityND.class);
startActivity(intent);
// if (loggedIn) {
// Intent intent = new Intent(MapsActivity.this, Home.class);
// startActivity(intent);
// }
}
});
alertDialogBuilder.setNegativeButton("No",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface arg0, int arg1) {
}
});
//Showing the alert dialog
AlertDialog alertDialog = alertDialogBuilder.create();
alertDialog.show();
}
//saving to database
private void submitForm() {
caddress = tvmap.getText().toString();
email = textview.getText().toString();
// Toast.makeText(this, "Signing up...", Toast.LENGTH_SHORT).show();
new MapAsync(this).execute(caddress,email);
}
@Override
protected void onStart() {
googleApiClient.connect();
super.onStart();
}
@Override
protected void onStop() {
googleApiClient.disconnect();
super.onStop();
}
//Getting current location
private void getCurrentLocation() {
mMap.clear();
//Creating a location object
if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.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;
}
Location location = LocationServices.FusedLocationApi.getLastLocation(googleApiClient);
if (location != null) {
//Getting longitude and latitude
longitude = location.getLongitude();
latitude = location.getLatitude();
// tvmap.setText("Latitude:" + location.getLatitude() + ", Longitude:" + location.getLongitude());
strAdd = getCompleteAddressString(latitude, longitude);
tvmap.setText("Current Address : " + strAdd);
//moving the map to location
moveMap();
}
}
//Function to move the map
private void moveMap() {
//String to display current latitude and longitude
String msg = latitude + ", "+longitude;
//Creating a LatLng Object to store Coordinates
LatLng latLng = new LatLng(latitude, longitude);
//Adding marker to map
mMap.addMarker(new MarkerOptions()
.position(latLng) //setting position
.draggable(true) //Making the marker draggable
.title("Current Location")); //Adding a title
//Moving the camera
mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
//Animating the camera
mMap.animateCamera(CameraUpdateFactory.zoomTo(15));
}
@Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
LatLng latLng = new LatLng(-34, 151);
mMap.addMarker(new MarkerOptions().position(latLng).draggable(true));
mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
mMap.setOnMarkerDragListener(this);
mMap.setOnMapLongClickListener(this);
}
@Override
public void onConnected(Bundle bundle) {
getCurrentLocation();
myProgress.dismiss();
}
@Override
public void onConnectionSuspended(int i) {
}
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
}
@Override
public void onMapLongClick(LatLng latLng) {
//Clearing all the markers
mMap.clear();
//Adding a new marker to the current pressed position
mMap.addMarker(new MarkerOptions()
.position(latLng)
.draggable(true));
}
@Override
public void onMarkerDragStart(Marker marker) {
}
@Override
public void onMarkerDrag(Marker marker) {
}
@Override
public void onMarkerDragEnd(Marker marker) {
//Getting the coordinates
latitude = marker.getPosition().latitude;
longitude = marker.getPosition().longitude;
//Moving the map
moveMap();
}
private String getCompleteAddressString(double LATITUDE, double LONGITUDE) {
String strAdd = "";
Geocoder geocoder = new Geocoder(this, Locale.getDefault());
try {
List<Address> addresses = geocoder
.getFromLocation(LATITUDE, LONGITUDE, 1);
if (addresses != null) {
android.location.Address returnedAddress = addresses.get(0);
StringBuilder strReturnedAddress = new StringBuilder("");
for (int i = 0; i < returnedAddress.getMaxAddressLineIndex(); i++) {
strReturnedAddress
.append(returnedAddress.getAddressLine(i)).append(
"\n");
}
strAdd = strReturnedAddress.toString();
// Log.w("My Current loction address",
// "" + strReturnedAddress.toString());
} else {
// Log.w("My Current loction address", "No Address returned!");
}
} catch (Exception e) {
e.printStackTrace();
// Log.w("My Current loction address", "Canont get Address!");
}
return strAdd;
}
}
manifest file
apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion "24.0.0"
defaultConfig {
applicationId "com.example.user.mangoair_t"
minSdkVersion 14
targetSdkVersion 23
versionCode 1
versionName "1.0"
multiDexEnabled true
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
android {
useLibrary 'org.apache.http.legacy'
}
dependencies {
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.4.0'
compile 'com.android.support:design:23.4.0'
compile 'com.google.http-client:google-http-client-android:+'
compile 'com.google.api-client:google-api-client-android:+'
compile 'com.google.api-client:google-api-client-gson:+'
compile 'com.google.code.gson:gson:2.2.4'
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:23.1.1'
compile fileTree(include: ['*.jar'], dir: 'libs')
compile "cz.msebera.android:httpclient:4.4.1.1"
compile group: 'cz.msebera.android' , name: 'httpclient', version: '4.4.1.1'
compile 'com.mcxiaoke.volley:library-aar:1.0.0'
compile 'com.android.support:design:23.2.0'
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.2.0'
compile 'com.android.support:design:23.2.0'
// compile 'com.google.android.gms:play-services:9.0.2'
compile 'com.google.android.gms:play-services:8.4.0'
compile 'com.android.support:appcompat-v7:23.4.0'
compile 'com.android.support:multidex:1.0.0'
}
答案 0 :(得分：2)
我认为您必须在运行时检查Android 6.0或更高版本的权限。这是我用来在运行时检查权限的代码段。
PackageManager pm = getApplicationContext().getPackageManager();
int hasCoarseLocPerm = pm.checkPermission(Manifest.permission.ACCESS_COARSE_LOCATION,getApplicationContext().getPackageName());
int hasFineLocPerm = pm.checkPermission(Manifest.permission.ACCESS_FINE_LOCATION,getApplicationContext().getPackageName());
if (!(hasCoarseLocPerm == PackageManager.PERMISSION_GRANTED&&hasFineLocPerm == PackageManager.PERMISSION_GRANTED)) {
// do stuff
Toast.makeText(PreferencesActivity.this, "Please provide all the permissions required", Toast.LENGTH_LONG).show();
}
答案 1 :(得分：1)
如果targetSDK为23，则必须在运行时检查位置权限。默认情况下，它未被授予。
在你的情况下，你应该做这样的事情来请求许可：
int hasLocationPermission = checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION);
if (hasLocationPermission != PackageManager.PERMISSION_GRANTED) {
requestPermissions(new String[] {Manifest.permission.ACCESS_FINE_LOCATION},
REQUEST_CODE_ASK_PERMISSIONS);
}
然后将在
中返回结果 @Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {}
有关详细信息，请阅读这篇关于检查并请求Android 6.0 New Android Runtime permission
权限的精彩教程答案 2 :(得分：0)
您可以尝试此操作权限：
public void checkPermission() {
if (ContextCompat.checkSelfPermission(YourActivity.this,
Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED) {
// Should we show an explanation?
if (ActivityCompat.shouldShowRequestPermissionRationale(YourActivity.this,
Manifest.permission.ACCESS_FINE_LOCATION)) {
// Show an expanation to the user *asynchronously* -- don't block
// this thread waiting for the user's response! After the user
// sees the explanation, try again to request the permission.
}
}
答案 3 :(得分：0)
注意：为marashmallow或更高版本提供这些权限运行时间，并在授予权限时放置代码
在mainfest中
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
运行时
public static final int REQUEST_ID_MULTIPLE_PERMISSIONS = 10;
private String[] permissions= new String[]{
Manifest.permission.ACCESS_COARSE_LOCATION,
Manifest.permission.ACCESS_FINE_LOCATION};
if (checkPermissions())
// permissions granted.
}
private boolean checkPermissions() {
int result;
List<String> listPermissionsNeeded = new ArrayList<>();
for (String p:permissions) {
result = ContextCompat.checkSelfPermission(this,p);
if (result != PackageManager.PERMISSION_GRANTED) {
listPermissionsNeeded.add(p);
}
}
if (!listPermissionsNeeded.isEmpty()) {
ActivityCompat.requestPermissions(this, listPermissionsNeeded.toArray(new String[listPermissionsNeeded.size()]),REQUEST_ID_MULTIPLE_PERMISSIONS);
return false;
}
return true;
}
答案 4 :(得分：0)
你在运行Android M吗？如果是这样，这是因为仅在清单中声明permissions是不够的。对于某些权限，您必须在run-time：
检查此Link以获取运行时权限。
代码段
在全球范围内定义。
private static final int PERMISSION_REQUEST_CODE = 1;
这将进入onCreate 。
if (ContextCompat.checkSelfPermission(Maps_Activity.this,
Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED) {
// Should we show an explanation?
if (ActivityCompat.shouldShowRequestPermissionRationale(Maps_Activity.this,
Manifest.permission.ACCESS_FINE_LOCATION)) {
// Show an expanation to the user *asynchronously* -- don't block
// this thread waiting for the user's response! After the user
// sees the explanation, try again to request the permission.
} else {
// No explanation needed, we can request the permission.
ActivityCompat.requestPermissions(Maps_Activity.this,
new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
PERMISSION_REQUEST_CODE);
// MY_PERMISSIONS_REQUEST_READ_CONTACTS is an
// app-defined int constant. The callback method gets the
// result of the request.
}
}
并覆盖onRequestPermissionsResult。
@Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults) {
switch (requestCode) {
case PERMISSION_REQUEST_CODE: {
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// permission was granted, yay!
} else {
// permission denied, boo! Disable the
// functionality that depends on this permission.
}
return;
}
// other 'case' lines to check for other
// permissions this app might request
}
}