54

我正在开发与地图相关的 android 应用程序，如果未启用位置服务，我需要在客户端开发中检查位置访问是否启用，显示对话框提示。

如何在android中以编程方式启用“位置访问”？

4

6 回答 6

115

使用以下代码进行检查。如果禁用，将生成对话框

public void statusCheck() {
    final LocationManager manager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);

    if (!manager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
        buildAlertMessageNoGps();

    }
}

private void buildAlertMessageNoGps() {
    final AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setMessage("Your GPS seems to be disabled, do you want to enable it?")
            .setCancelable(false)
            .setPositiveButton("Yes", new DialogInterface.OnClickListener() {
                public void onClick(final DialogInterface dialog, final int id) {
                    startActivity(new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS));
                }
            })
            .setNegativeButton("No", new DialogInterface.OnClickListener() {
                public void onClick(final DialogInterface dialog, final int id) {
                    dialog.cancel();
                }
            });
    final AlertDialog alert = builder.create();
    alert.show();
}
于 2014-08-07T06:40:39.453 回答
12

这是一种以编程方式启用地图应用程序等位置的简单方法：

protected void enableLocationSettings() {
       LocationRequest locationRequest = LocationRequest.create()
             .setInterval(LOCATION_UPDATE_INTERVAL)
             .setFastestInterval(LOCATION_UPDATE_FASTEST_INTERVAL)
             .setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);

        LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
                .addLocationRequest(locationRequest);

        LocationServices
                .getSettingsClient(this)
                .checkLocationSettings(builder.build())
                .addOnSuccessListener(this, (LocationSettingsResponse response) -> {
                    // startUpdatingLocation(...);
                })
                .addOnFailureListener(this, ex -> {
                    if (ex instanceof ResolvableApiException) {
                        // Location settings are NOT satisfied,  but this can be fixed  by showing the user a dialog.
                        try {
                            // Show the dialog by calling startResolutionForResult(),  and check the result in onActivityResult().
                            ResolvableApiException resolvable = (ResolvableApiException) ex;
                            resolvable.startResolutionForResult(TrackingListActivity.this, REQUEST_CODE_CHECK_SETTINGS);
                        } catch (IntentSender.SendIntentException sendEx) {
                            // Ignore the error.
                        }
                    }
                });
 }

和 onActivityResult：

@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
    if (REQUEST_CODE_CHECK_SETTINGS == requestCode) {
        if(Activity.RESULT_OK == resultCode){
            //user clicked OK, you can startUpdatingLocation(...);

        }else{
            //user clicked cancel: informUserImportanceOfLocationAndPresentRequestAgain();
        }
    }
}

您可以在此处查看文档：https ://developer.android.com/training/location/change-location-settings

于 2019-01-31T05:57:00.433 回答
9

您可以尝试以下这些方法：

检查是否启用了 GPS 和网络提供商：

public boolean canGetLocation() {
    boolean result = true;
    LocationManager lm;
    boolean gpsEnabled = false;
    boolean networkEnabled = false;

    lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);

    // exceptions will be thrown if provider is not permitted.
    try {
        gpsEnabled = lm.isProviderEnabled(LocationManager.GPS_PROVIDER);
    } catch (Exception ex) {
    }

    try {
        networkEnabled = lm
                .isProviderEnabled(LocationManager.NETWORK_PROVIDER);
    } catch (Exception ex) {
    }

    return gpsEnabled && networkEnabled;
}

如果上面的代码返回 false，则警告对话框：

public void showSettingsAlert() {
    AlertDialog.Builder alertDialog = new AlertDialog.Builder(this);

    // Setting Dialog Title
    alertDialog.setTitle("Error!");

    // Setting Dialog Message
    alertDialog.setMessage("Please ");

    // On pressing Settings button
    alertDialog.setPositiveButton(
            getResources().getString(R.string.button_ok),
            new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int which) {
                    Intent intent = new Intent(
                            Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                    startActivity(intent);
                }
            });

    alertDialog.show();
}

以上两种方法的使用方法：

if (canGetLocation()) {     
    //DO SOMETHING USEFUL HERE. ALL GPS PROVIDERS ARE CURRENTLY ENABLED                 
} else {
    //SHOW OUR SETTINGS ALERT, AND LET THE USE TURN ON ALL THE GPS PROVIDERS                                
    showSettingsAlert();
}
于 2014-08-07T06:54:33.863 回答
3

只需检查以下线程： 如何检查是否启用了定位服务？ 它提供了一个很好的示例，说明如何检查位置服务是否已启用。

于 2014-08-07T06:31:27.193 回答
2 
private ActivityResultLauncher<IntentSenderRequest> resolutionForResult;

resolutionForResult = registerForActivityResult(new ActivityResultContracts.StartIntentSenderForResult(), result -> {
        if(result.getResultCode() == RESULT_OK){
            //Granted
        }else {
            //Not Granted
        }
    });

    private void enableLocationSettings() {
    LocationRequest locationRequest = LocationRequest.create()
            .setInterval(10 * 1000)
            .setFastestInterval(2 * 1000)
            .setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);

    LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
            .addLocationRequest(locationRequest);

    LocationServices
            .getSettingsClient(requireActivity())
            .checkLocationSettings(builder.build())
            .addOnSuccessListener(requireActivity(), (LocationSettingsResponse response) -> {
                // startUpdatingLocation(...);
            })
            .addOnFailureListener(requireActivity(), ex -> {
                if (ex instanceof ResolvableApiException) {
                    try{
                        IntentSenderRequest intentSenderRequest = new IntentSenderRequest.Builder(((ResolvableApiException) ex).getResolution()).build();
                        resolutionForResult.launch(intentSenderRequest);
                    }catch (Exception exception){
                        Log.d(TAG, "enableLocationSettings: "+exception);
                    }
                }
            });
}
于 2021-09-23T07:31:37.390 回答
1

在最近的 Marshmallow 更新中，即使打开了位置设置，您的应用也需要明确请求许可。推荐的方法是显示应用程序的权限部分，用户可以在其中根据需要切换权限。执行此操作的代码片段如下：

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
    
    if (this.checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
    
        final AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("Location Permission");
        builder.setMessage("The app needs location permissions. Please grant this permission to continue using the features of the app.");
        builder.setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialogInterface, int i) {
                requestPermissions(new String[]{Manifest.permission.ACCESS_COARSE_LOCATION}, PERMISSION_REQUEST_COARSE_LOCATION);
    
            }
        });
        builder.setNegativeButton(android.R.string.no, null);
        builder.show();
    }
} else {
    LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
    boolean isGpsProviderEnabled, isNetworkProviderEnabled;
    isGpsProviderEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
    isNetworkProviderEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);

    if(!isGpsProviderEnabled && !isNetworkProviderEnabled) {
        final AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("Location Permission");
        builder.setMessage("The app needs location permissions. Please grant this permission to continue using the features of the app.");
        builder.setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialogInterface, int i) {
                Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                startActivity(intent);
            }
        });
        builder.setNegativeButton(android.R.string.no, null);
        builder.show();
    }
}

并覆盖如下onRequestPermissionsResult方法：

@Override
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
    switch (requestCode) {
        case PERMISSION_REQUEST_COARSE_LOCATION: {
            if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                Log.d(TAG, "coarse location permission granted");
            } else {
                Intent intent = new Intent();
                intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
                Uri uri = Uri.fromParts("package", getPackageName(), null);
                intent.setData(uri);
                startActivity(intent);
            }
        }
    }
}

另一种方法是您也可以使用SettingsApi来查询启用了哪些位置提供程序。如果未启用，您可以提示对话框从应用程序内更改设置。

于 2017-07-11T06:52:47.620 回答