位置更新不适用于允许运行时权限
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【中文标题】位置更新不适用于允许运行时权限【英文标题】：Location updates not working on allowing runtime permission 【发布时间】：2018-10-28 13:05:12 【问题描述】：我为应用程序编写了代码，显示手机的纬度和经度并将其显示在屏幕上，但在授予位置权限后，它不显示任何内容，只有当我重新打开应用程序时。 这是 MainActivity 的代码：
import android.Manifest;
import android.content.pm.PackageManager;
import android.location.Location;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.widget.TextView;
import android.widget.Toast;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;
public class MainActivity extends AppCompatActivity implements
GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener,
com.google.android.gms.location.LocationListener
protected static final String TAG = "Location Services";
protected static final String TAGfail = "FAILED TO CONNECT";
protected static final String TAGNOCONNECTION = "NO CONNECTION";
protected GoogleApiClient mGoogleApiClient;
protected TextView mLatitudeText;
protected TextView mLongitudeText;
protected LocationRequest mLocationRequest;
@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mLatitudeText = (TextView) findViewById(R.id.latitude);
mLongitudeText = (TextView) findViewById(R.id.longitude);
ActivityCompat.requestPermissions(MainActivity.this,
new String[]Manifest.permission.ACCESS_FINE_LOCATION,
1);
buildGoogleApiClient();
protected synchronized void buildGoogleApiClient()
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
@Override
protected void onStart()
super.onStart();
mGoogleApiClient.connect();
@Override
protected void onStop()
super.onStop();
if (mGoogleApiClient.isConnected())
mGoogleApiClient.disconnect();
@Override
public void onConnected(@Nullable Bundle bundle)
mLocationRequest = LocationRequest.create();
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
mLocationRequest.setInterval(1000);
if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission
(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED)
return;
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
@Override
public void onLocationChanged(Location location)
Log.i(TAG, location.toString());
mLatitudeText.setText(String.valueOf(location.getLatitude()));
mLongitudeText.setText(String.valueOf(location.getLongitude()));
@Override
public void onConnectionSuspended(int i)
Log.i(TAGNOCONNECTION, "no connection");
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult)
Toast.makeText(this, "No location permission granted", Toast.LENGTH_SHORT).show();
Log.i(TAGfail, "failed to connect");
清单文件：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.domin.myfavouriteplace">
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<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">
<meta-data android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version"/>
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
和 Gradle 依赖关系：
dependencies
implementation fileTree(dir: 'libs', include: ['*.jar'])
//noinspection GradleCompatible
implementation 'com.android.support:appcompat-v7:27.1.1'
implementation 'com.android.support.constraint:constraint-layout:1.1.0'
implementation 'com.google.android.gms:play-services:10+'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
我该如何解决这个问题？
最佳
【问题讨论】：
那么为什么在重新打开你的应用后它会显示一些东西？ 您是否覆盖了onRequestPermissionResult？
重写onRequestPermissionResult()，即使你不想放任何代码，你仍然需要重写它。它是应用程序正常运行所必需的。
我在这里发布问题之前已经尝试过，但它没有做任何更改。
【参考方案1】：
试试这个完整的解决方案
在onCreate() 中这样做
@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mLatitudeText = (TextView) findViewById(R.id.latitude);
mLongitudeText = (TextView) findViewById(R.id.longitude);
checkAndroidVersion();
这个方法checkAndroidVersion();
public void checkAndroidVersion()
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M)
if (checkAndRequestPermissions())
buildClient();
mGoogleApiClient.connect();
else
else
if (checkPlayServices())
// Building the GoogleApi client
buildClient();
mGoogleApiClient.connect();
// write your logic here
这个方法
public boolean checkAndRequestPermissions()
int location = ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.ACCESS_FINE_LOCATION);
List<String> listPermissionsNeeded = new ArrayList<>();
if (location != PackageManager.PERMISSION_GRANTED)
listPermissionsNeeded.add(Manifest.permission.ACCESS_FINE_LOCATION);
if (!listPermissionsNeeded.isEmpty())
ActivityCompat.requestPermissions(MainActivity.this, listPermissionsNeeded.toArray(new String[listPermissionsNeeded.size()]), REQUEST_ID_MULTIPLE_PERMISSIONS);
return false;
return true;
public static final int REQUEST_ID_MULTIPLE_PERMISSIONS = 1;
然后在 onRequestPermission() 中
@Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults)
Log.d("in main on request", "Permission callback called-------");
switch (requestCode)
case REQUEST_ID_MULTIPLE_PERMISSIONS:
Map<String, Integer> perms = new HashMap<>();
perms.put(Manifest.permission.ACCESS_FINE_LOCATION, PackageManager.PERMISSION_GRANTED);
// Fill with actual results from user
if (grantResults.length > 0)
for (int i = 0; i < permissions.length; i++)
perms.put(permissions[i], grantResults[i]);
// Check for both permissions
if (perms.get(Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED)
Log.d("in main on request", "location services permission granted");
// process the normal flow
//else any one or both the permissions are not granted
buildClient();
mGoogleApiClient.connect();
else
Log.d("in fragment on request", "Some permissions are not granted ask again ");
//permission is denied (this is the first time, when "never ask again" is not checked) so ask again explaining the usage of permission
// // shouldShowRequestPermissionRationale will return true
//show the dialog or snackbar saying its necessary and try again otherwise proceed with setup.
if (ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this, Manifest.permission.ACCESS_FINE_LOCATION))
showDialogOK("Location services services are required for this app",
new DialogInterface.OnClickListener()
@Override
public void onClick(DialogInterface dialog, int which)
switch (which)
case DialogInterface.BUTTON_POSITIVE:
checkAndRequestPermissions();
break;
case DialogInterface.BUTTON_NEGATIVE:
// proceed with logic by disabling the related features or quit the app.
break;
);
//permission is denied (and never ask again is checked)
//shouldShowRequestPermissionRationale will return false
else
Toast.makeText(MainActivity.this, "Go to settings and enable permissions", Toast.LENGTH_LONG)
.show();
// //proceed with logic by disabling the related features or quit the app.
public void showDialogOK(String message, DialogInterface.OnClickListener okListener)
new AlertDialog.Builder(MainActivity.this)
.setMessage(message)
.setPositiveButton("OK", okListener)
.setNegativeButton("Cancel", okListener)
.create()
.show();
然后
public void buildClient()
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
然后这样做
@Override
public void onStop()
super.onStop();
if (mGoogleApiClient != null)
if (mGoogleApiClient.isConnected() && mGoogleApiClient != null)
mGoogleApiClient.disconnect();
然后
/**
* Method to verify google play services on the device
*/
public boolean checkPlayServices()
int resultCode = GooglePlayServicesUtil
.isGooglePlayServicesAvailable(this);
if (resultCode != ConnectionResult.SUCCESS)
if (GooglePlayServicesUtil.isUserRecoverableError(resultCode))
GooglePlayServicesUtil.getErrorDialog(resultCode, this,
PLAY_SERVICES_RESOLUTION_REQUEST).show();
else
Toast.makeText(MainActivity.this,
"This device is not supported.", Toast.LENGTH_LONG)
.show();
finish();
return false;
return true;
然后添加这个
@Override
public void onConnected(@Nullable Bundle bundle)
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;
startLocationUpdates();
mLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
if (mLocation == null)
startLocationUpdates();
if (mLocation != null)
double latitude = mLocation.getLatitude();
double longitude = mLocation.getLongitude();
else
// Toast.makeText(this, "Location not Detected", Toast.LENGTH_SHORT).show();
/**
* This library works in release mode only with the same JKS key used for
* your Previous Version
*/
protected void startLocationUpdates()
// Create the location request
mLocationRequest = LocationRequest.create()
.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY)
.setInterval(5000)
.setFastestInterval(5000);
// Request location updates
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;
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient,
mLocationRequest, this);
Log.d("reque", "--->>>>");
@Override
public void onConnectionSuspended(int i)
Log.i(TAG, "Connection Suspended");
mGoogleApiClient.connect();
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult)
try
if (checkAndRequestPermissions())
buildClient();
mGoogleApiClient.connect();
catch (Exception e)
e.printStackTrace();
@Override
public void onLocationChanged(Location location)
current_location = location;
SharedPrefsUtils.setStringPreference(MainActivity.this, "user_current_latitude", current_location.getLatitude() + "");
SharedPrefsUtils.setStringPreference(MainActivity.this, "user_current_longitude", current_location.getLongitude() + "");
System.out.println("sjkbd jdsbj");
在 Activity 或片段中
private GoogleApiClient mGoogleApiClient;
private Location mLocation;
private LocationManager locationManager;
private LocationRequest mLocationRequest;
public class MainActivity extends AppCompatActivity implements View.OnClickListener, GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, com.google.android.gms.location.LocationListener
【讨论】：
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