本文整理自网络，侵删。
unit Androidapi.JNI.Network;
interface
function IsConnected: Boolean;
function IsWiFiConnected: Boolean;
function IsMobileConnected: Boolean;
implementation
uses
System.SysUtils,
Androidapi.JNIBridge,
Androidapi.JNI.GraphicsContentViewText,
Androidapi.JNI.JavaTypes,
FMX.Helpers.Android;
type
JConnectivityManager = interface;
JNetworkInfo = interface;
JNetworkInfoClass = interface(JObjectClass)
['{E92E86E8-0BDE-4D5F-B44E-3148BD63A14C}']
end;
[JavaSignature('android/net/NetworkInfo')]
JNetworkInfo = interface(JObject)
['{6DF61A40-8D17-4E51-8EF2-32CDC81AC372}']
{Methods}
function isAvailable: Boolean; cdecl;
function isConnected: Boolean; cdecl;
function isConnectedOrConnecting: Boolean; cdecl;
end;
TJNetworkInfo = class(TJavaGenericImport) end;
JConnectivityManagerClass = interface(JObjectClass)
['{E03A261F-59A4-4236-8CDF-0068FC6C5FA1}']
{Property methods}
function _GetTYPE_WIFI: Integer; cdecl;
function _GetTYPE_WIMAX: Integer; cdecl;
function _GetTYPE_MOBILE: Integer; cdecl;
{Properties}
property TYPE_WIFI: Integer read _GetTYPE_WIFI;
property TYPE_WIMAX: Integer read _GetTYPE_WIMAX;
property TYPE_MOBILE: Integer read _GetTYPE_MOBILE;
end;
[JavaSignature('android/net/ConnectivityManager')]
JConnectivityManager = interface(JObject)
['{1C4C1873-65AE-4722-8EEF-36BBF423C9C5}']
{Methods}
function getActiveNetworkInfo: JNetworkInfo; cdecl;
function getNetworkInfo(networkType: Integer): JNetworkInfo; cdecl;
end;
TJConnectivityManager = class(TJavaGenericImport) end;
function GetConnectivityManager: JConnectivityManager;
var
ConnectivityServiceNative: JObject;
begin
ConnectivityServiceNative := SharedActivityContext.getSystemService(TJContext.JavaClass.CONNECTIVITY_SERVICE);
if not Assigned(ConnectivityServiceNative) then
raise Exception.Create('Could not locate Connectivity Service');
Result := TJConnectivityManager.Wrap(
(ConnectivityServiceNative as ILocalObject).GetObjectID);
if not Assigned(Result) then
raise Exception.Create('Could not access Connectivity Manager');
end;
function IsConnected: Boolean;
var
ConnectivityManager: JConnectivityManager;
ActiveNetwork: JNetworkInfo;
begin
ConnectivityManager := GetConnectivityManager;
ActiveNetwork := ConnectivityManager.getActiveNetworkInfo;
Result := Assigned(ActiveNetwork) and ActiveNetwork.isConnected;
end;
function IsWiFiConnected: Boolean;
var
ConnectivityManager: JConnectivityManager;
WiFiNetwork: JNetworkInfo;
begin
ConnectivityManager := GetConnectivityManager;
WiFiNetwork := ConnectivityManager.getNetworkInfo(TJConnectivityManager.JavaClass.TYPE_WIFI);
Result := WiFiNetwork.isConnected;
end;
function IsMobileConnected: Boolean;
var
ConnectivityManager: JConnectivityManager;
MobileNetwork: JNetworkInfo;
begin
ConnectivityManager := GetConnectivityManager;
MobileNetwork := ConnectivityManager.getNetworkInfo(TJConnectivityManager.JavaClass.TYPE_MOBILE);
Result := MobileNetwork.isConnected;
end;
end.
调用：
if IsConnected then
ShowMessage('IsConnected');
if IsWiFiConnected then
ShowMessage('IsWiFiConnected');
if IsMobileConnected then
ShowMessage('IsMobileConnected');
相关阅读 >>
Delphi firedac 下的 sqlite [4] - 创建数据库
Delphi vcl 模式下和firemonkey 模式下的字符串
Delphi webservice 中采用 tsoapattachment 传输文件
Delphi 文字的高度与宽度: canvas.textextent
Delphi 取得开机时间 开机时间总长度（可精确到秒，分钟等）
更多相关阅读请进入《Delphi》频道 >>
