如何在Android App上以編程方式打開GPS

Question

請幫我在我的移動應用程序中打開GPS，如OlaCabs ..我使用下面的代碼：

String provider = Settings.Secure.getString(getContentResolver(), Settings.Secure.LOCATION_PROVIDERS_ALLOWED);

if(!provider.contains("gps")){ //if gps is disabled
    final Intent poke = new Intent();
    poke.setClassName("com.android.settings", "com.android.settings.widget.SettingsAppWidgetProvider"); 
    poke.addCategory(Intent.CATEGORY_ALTERNATIVE);
    poke.setData(Uri.parse("3")); 
    sendBroadcast(poke);
}

但它無法打開GPS ..

Answer 1

Android指南已更改為4.0以上版本。 對於4.0以上的版本，您無法以編程方式更改GPS ...

不要像我一樣浪費你的時間

要使用Dialog檢查它：

https://developers.google.com/android/reference/com/google/android/gms/location/SettingsApi

或者那個：

https://stackoverflow.com/a/12446361/3626214

Answer 2

對於那些仍在尋找答案的人：

以下是OLA Cabs和其他類似應用程序的用法。

在你的onCreate中添加它

if (googleApiClient == null) {
            googleApiClient = new GoogleApiClient.Builder(this)
                    .addApi(LocationServices.API).addConnectionCallbacks(this)
                    .addOnConnectionFailedListener(Login.this).build();
            googleApiClient.connect();

            LocationRequest locationRequest = LocationRequest.create();
            locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
            locationRequest.setInterval(30 * 1000);
            locationRequest.setFastestInterval(5 * 1000);
            LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
                    .addLocationRequest(locationRequest);

            // **************************
            builder.setAlwaysShow(true); // this is the key ingredient
            // **************************

            PendingResult<LocationSettingsResult> result = LocationServices.SettingsApi
                    .checkLocationSettings(googleApiClient, builder.build());
            result.setResultCallback(new ResultCallback<LocationSettingsResult>() {
                @Override
                public void onResult(LocationSettingsResult result) {
                    final Status status = result.getStatus();
                    final LocationSettingsStates state = result
                            .getLocationSettingsStates();
                    switch (status.getStatusCode()) {
                    case LocationSettingsStatusCodes.SUCCESS:
                        // All location settings are satisfied. The client can
                        // initialize location
                        // requests here.
                        break;
                    case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
                        // Location settings are not satisfied. But could be
                        // fixed by showing the user
                        // a dialog.
                        try {
                            // Show the dialog by calling
                            // startResolutionForResult(),
                            // and check the result in onActivityResult().
                            status.startResolutionForResult(Login.this, 1000);
                        } catch (IntentSender.SendIntentException e) {
                            // Ignore the 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;
                    }
                }
            });
        }

這些是實施方法：

@Override
    public void onConnected(Bundle arg0) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onConnectionSuspended(int arg0) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onConnectionFailed(ConnectionResult arg0) {
        // TODO Auto-generated method stub

    }

Answer 3

當手動啟用位置時，您可以向用戶顯示一個對話框並將他/她重定向到設置