在不使用Play Services API的情况下启用位置/ GPS设置

Question

众所周知，Google Play服务中提供了一个新的“位置设置对话框” API。

对于那些不知道的人，这里是使用Dialog API的Maps应用的屏幕截图。

Google只是在其play服务中添加了该API，这有点不公平。另一方面，我认为如果他们能够做到，那就会有解决方法。这就是为什么我问这个问题。任何信息表示赞赏。

（注意：有一个漏洞可让开发人员以编程方式启用和禁用gps /位置设置。但是，SO上可用的这些技巧不再起作用。请不要发布过时的答案。）

Answer 1

嗨，这对我有用。

void initApiClient() {
        GoogleApiClient mGoogleApiClient = new GoogleApiClient.Builder(getActivity())
                .addApi(LocationServices.API)
                .addConnectionCallbacks(new GoogleApiClient.ConnectionCallbacks() {
                    @Override
                    public void onConnected(@Nullable Bundle bundle) {
                        showLocationSettingsDialog();
                    }

                    @Override
                    public void onConnectionSuspended(int i) {

                    }
                })
                .addOnConnectionFailedListener(new GoogleApiClient.OnConnectionFailedListener() {
                    @Override
                    public void onConnectionFailed(@NonNull ConnectionResult result) {
                        Log.i(TAG, "onConnectionFailed() connectionResult = [" + result + "]");
                    }
                })
                .build();
        mGoogleApiClient.connect();
    }

    void showLocationSettingsDialog() {

        LocationRequest locationRequest = LocationRequest.create();
        locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);

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

        Task<LocationSettingsResponse> result = LocationServices.getSettingsClient(getActivity())
                .checkLocationSettings(builder.build());

        result.addOnCompleteListener(new OnCompleteListener<LocationSettingsResponse>() {
            @Override
            public void onComplete(Task<LocationSettingsResponse> task) {
                try {
                    LocationSettingsResponse response = task.getResult(ApiException.class);
                    // All location settings are satisfied. The client can initialize location
                    // requests here.
                } catch (ApiException e) {
                    switch (e.getStatusCode()) {
                        case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
                            // Location settings are not satisfied. But could be fixed by showing the
                            // user a dialog.
                            try {
                                // Cast to a resolvable exception.
                                ResolvableApiException resolvable = (ResolvableApiException) e;
                                // Show the dialog by calling startResolutionForResult(),
                                // and check the result in onActivityResult().
                                resolvable.startResolutionForResult(
                                        getActivity(),
                                        REQUEST_CHECK_SETTINGS);
                            } catch (IntentSender.SendIntentException exception) {
                                // Ignore the error.
                            } catch (ClassCastException exception) {
                                // Ignore, should be an impossible error.
                            }
                            break;
                        case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
                            // Location settings are not satisfied. However, we have no way to fix the
                            // settings so we won't show the dialog.
                            break;
                    }
                }
            }
        });
    }

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