Android“ gps need ACCESS_FINE_LOCATION”错误,尽管我的清单文件包含这个错误

每次运行应用程序时,都会抛出 SecurityException,调试器发出的错误如下:

“ gps”位置提供程序需要 ACCESS _ COARSE _ LOCATION 或 ACCESS _ FINE _ LOCATION 权限。

这似乎是一个简单的错误,但是,我的清单文件是完全正确的。这就是我的 MapActivity 代码:

<?xml version="1.0" encoding="utf-8"?>

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-permission android:name="com.dev.cromer.jason.coverme.permission.MAPS_RECEIVE" />


<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />


<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>


<meta-data
android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version" />
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value= "@string/google_maps_key" />


<activity
android:name=".MapActivity"
android:label="@string/title_activity_map" >
</activity>
</application>

我的活动:

    package com.dev.cromer.jason.coverme;


import android.location.Criteria;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.support.v4.app.FragmentActivity;
import android.os.Bundle;
import android.util.Log;


import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;


public class MapActivity extends FragmentActivity implements LocationListener {


private GoogleMap mMap; // Might be null if Google Play services APK is not available.


@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_map);


setUpMapIfNeeded();
}


@Override
protected void onResume() {
super.onResume();
setUpMapIfNeeded();
}






private void setUpMapIfNeeded() {
// Do a null check to confirm that we have not already instantiated the map.
if (mMap == null) {
// Try to obtain the map from the SupportMapFragment.
mMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map))
.getMap();


// Check if we were successful in obtaining the map.
if (mMap != null) {
//mMap.setMyLocationEnabled(true);
//mMap.setOnMyLocationChangeListener(this);
setUpMap();
}
}
}




private void setUpMap() {
mMap.addMarker(new MarkerOptions().position(new LatLng(0, 0)).title("Marker"));
mMap.setMyLocationEnabled(true);


LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);


try {
Location myLocation = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);


if (myLocation != null) {
Log.d("TAG", "Not null");
}
else {
Log.d("TAG", "NULL");
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this);
}
}
catch (SecurityException se) {
Log.d("TAG", "SE CAUGHT");
se.printStackTrace();
}
}




@Override
public void onLocationChanged(Location location) {
Log.d("CHANGED", "LOCATION UPDATED");


}


@Override
public void onStatusChanged(String provider, int status, Bundle extras) {


}


@Override
public void onProviderEnabled(String provider) {


}


@Override
public void onProviderDisabled(String provider) {


}
}
147988 次浏览

ACCESS_COARSE_LOCATION, ACCESS_FINE_LOCATION, and WRITE_EXTERNAL_STORAGE are all part of the Android 6.0 runtime permission system. In addition to having them in the manifest as you do, you also have to request them from the user at runtime (using requestPermissions()) and see if you have them (using checkSelfPermission()).

One workaround in the short term is to drop your targetSdkVersion below 23.

But, eventually, you will want to update your app to use the runtime permission system.

For example, this activity works with five permissions. Four are runtime permissions, though it is presently only handling three (I wrote it before WRITE_EXTERNAL_STORAGE was added to the runtime permission roster).

/***
Copyright (c) 2015 CommonsWare, LLC
Licensed under the Apache License, Version 2.0 (the "License"); you may not
use this file except in compliance with the License. You may obtain a copy
of the License at http://www.apache.org/licenses/LICENSE-2.0. Unless required
by applicable law or agreed to in writing, software distributed under the
License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS
OF ANY KIND, either express or implied. See the License for the specific
language governing permissions and limitations under the License.


From _The Busy Coder's Guide to Android Development_
https://commonsware.com/Android
*/


package com.commonsware.android.permmonger;


import android.Manifest;
import android.app.Activity;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;
import android.widget.Toast;


public class MainActivity extends Activity {
private static final String[] INITIAL_PERMS={
Manifest.permission.ACCESS_FINE_LOCATION,
Manifest.permission.READ_CONTACTS
};
private static final String[] CAMERA_PERMS={
Manifest.permission.CAMERA
};
private static final String[] CONTACTS_PERMS={
Manifest.permission.READ_CONTACTS
};
private static final String[] LOCATION_PERMS={
Manifest.permission.ACCESS_FINE_LOCATION
};
private static final int INITIAL_REQUEST=1337;
private static final int CAMERA_REQUEST=INITIAL_REQUEST+1;
private static final int CONTACTS_REQUEST=INITIAL_REQUEST+2;
private static final int LOCATION_REQUEST=INITIAL_REQUEST+3;
private TextView location;
private TextView camera;
private TextView internet;
private TextView contacts;
private TextView storage;


@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);


location=(TextView)findViewById(R.id.location_value);
camera=(TextView)findViewById(R.id.camera_value);
internet=(TextView)findViewById(R.id.internet_value);
contacts=(TextView)findViewById(R.id.contacts_value);
storage=(TextView)findViewById(R.id.storage_value);


if (!canAccessLocation() || !canAccessContacts()) {
requestPermissions(INITIAL_PERMS, INITIAL_REQUEST);
}
}


@Override
protected void onResume() {
super.onResume();


updateTable();
}


@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.actions, menu);


return(super.onCreateOptionsMenu(menu));
}


@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch(item.getItemId()) {
case R.id.camera:
if (canAccessCamera()) {
doCameraThing();
}
else {
requestPermissions(CAMERA_PERMS, CAMERA_REQUEST);
}
return(true);


case R.id.contacts:
if (canAccessContacts()) {
doContactsThing();
}
else {
requestPermissions(CONTACTS_PERMS, CONTACTS_REQUEST);
}
return(true);


case R.id.location:
if (canAccessLocation()) {
doLocationThing();
}
else {
requestPermissions(LOCATION_PERMS, LOCATION_REQUEST);
}
return(true);
}


return(super.onOptionsItemSelected(item));
}


@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
updateTable();


switch(requestCode) {
case CAMERA_REQUEST:
if (canAccessCamera()) {
doCameraThing();
}
else {
bzzzt();
}
break;


case CONTACTS_REQUEST:
if (canAccessContacts()) {
doContactsThing();
}
else {
bzzzt();
}
break;


case LOCATION_REQUEST:
if (canAccessLocation()) {
doLocationThing();
}
else {
bzzzt();
}
break;
}
}


private void updateTable() {
location.setText(String.valueOf(canAccessLocation()));
camera.setText(String.valueOf(canAccessCamera()));
internet.setText(String.valueOf(hasPermission(Manifest.permission.INTERNET)));
contacts.setText(String.valueOf(canAccessContacts()));
storage.setText(String.valueOf(hasPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE)));
}


private boolean canAccessLocation() {
return(hasPermission(Manifest.permission.ACCESS_FINE_LOCATION));
}


private boolean canAccessCamera() {
return(hasPermission(Manifest.permission.CAMERA));
}


private boolean canAccessContacts() {
return(hasPermission(Manifest.permission.READ_CONTACTS));
}


private boolean hasPermission(String perm) {
return(PackageManager.PERMISSION_GRANTED==checkSelfPermission(perm));
}


private void bzzzt() {
Toast.makeText(this, R.string.toast_bzzzt, Toast.LENGTH_LONG).show();
}


private void doCameraThing() {
Toast.makeText(this, R.string.toast_camera, Toast.LENGTH_SHORT).show();
}


private void doContactsThing() {
Toast.makeText(this, R.string.toast_contacts, Toast.LENGTH_SHORT).show();
}


private void doLocationThing() {
Toast.makeText(this, R.string.toast_location, Toast.LENGTH_SHORT).show();
}
}

(from this sample project)

For the requestPermissions() function, should the parameters just be "ACCESS_COARSE_LOCATION"? Or should I include the full name "android.permission.ACCESS_COARSE_LOCATION"?

I would use the constants defined on Manifest.permission, as shown above.

Also, what is the request code?

That will be passed back to you as the first parameter to onRequestPermissionsResult(), so you can tell one requestPermissions() call from another.

My simple solution is this

if (ContextCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) ==
PackageManager.PERMISSION_GRANTED &&
ContextCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) ==
PackageManager.PERMISSION_GRANTED) {
googleMap.setMyLocationEnabled(true);
googleMap.getUiSettings().setMyLocationButtonEnabled(true);
} else {
Toast.makeText(this, R.string.error_permission_map, Toast.LENGTH_LONG).show();
}

or you can open permission dialog in else like this

} else {
ActivityCompat.requestPermissions(this, new String[] {
Manifest.permission.ACCESS_FINE_LOCATION,
Manifest.permission.ACCESS_COARSE_LOCATION },
TAG_CODE_PERMISSION_LOCATION);
}

CAUSE: "Beginning in Android 6.0 (API level 23), users grant permissions to apps while the app is running, not when they install the app." In this case, "ACCESS_FINE_LOCATION" is a "dangerous permission and for that reason, you get this 'java.lang.SecurityException: "gps" location provider requires ACCESS_FINE_LOCATION permission.' error (https://developer.android.com/training/permissions/requesting.html).

SOLUTION: Implementing the code provided at https://developer.android.com/training/permissions/requesting.html under the "Request the permissions you need" and "Handle the permissions request response" headings.