次のようなコードを試すことができます。ここでヘルパーユニットです:
unit LocationU;
interface
function IsGPSProviderEnabled: Boolean;
function IsNetworkProviderEnabled: Boolean;
procedure LaunchLocationSettings;
implementation
uses
System.SysUtils,
Androidapi.Helpers,
Androidapi.JNI.JavaTypes,
Androidapi.JNI.GraphicsContentViewText,
Androidapi.JNI.Location,
Androidapi.JNI.Provider;
function IsProviderEnabled(const Provider: JString): Boolean;
var
LocationManagerObj: JObject;
LocationManager: JLocationManager;
begin
LocationManagerObj := TAndroidHelper.Context.getSystemService(
TJContext.JavaClass.LOCATION_SERVICE);
LocationManager := TJLocationManager.Wrap(LocationManagerObj);
Result := LocationManager.isProviderEnabled(Provider);
end;
function IsGPSProviderEnabled: Boolean;
begin
Result := IsProviderEnabled(TJLocationManager.JavaClass.GPS_PROVIDER);
end;
function IsNetworkProviderEnabled: Boolean;
begin
Result := IsProviderEnabled(TJLocationManager.JavaClass.NETWORK_PROVIDER);
end;
procedure LaunchLocationSettings;
begin
TAndroidHelper.Activity.startActivity(
TJIntent.JavaClass.init(TJSettings.JavaClass.ACTION_LOCATION_SOURCE_SETTINGS));
end;
end.
、ここではそれを呼び出すいくつかのコードです:
uses
FMX.Helpers.Android,
Androidapi.Helpers,
Androidapi.JNI.Widget,
LocationU;
procedure TMainForm.FormCreate(Sender: TObject);
begin
if not IsGPSProviderEnabled and not IsNetworkProviderEnabled then
begin
CallInUiThread(
procedure
begin
TJToast.JavaClass.makeText(
TAndroidHelper.Context,
StrToJCharSequence('Location services not enabled - launching settings'),
TJToast.JavaClass.LENGTH_SHORT).show
end);
LaunchLocationSettings;
end;
end;
は