温馨提示×

如何在Android项目中启用MDNSD功能

小樊
111
2024-08-22 12:27:29
栏目: 编程语言

要在Android项目中启用MDNSD功能,您可以通过以下步骤实现:

  1. 在项目的AndroidManifest.xml文件中添加以下权限:
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.CHANGE_WIFI_MULTICAST_STATE" />
  1. 在build.gradle文件中添加mDNS库的依赖:
implementation 'org.apache.httpcomponents:httpclient-android:4.3.5.1'
implementation 'javax.jmdns:jmdns:3.5.6'
  1. 创建一个MDNS服务类,该类将负责注册服务和发现服务。以下是一个示例MDNSService类的代码:
import javax.jmdns.JmDNS;
import javax.jmdns.ServiceInfo;

public class MDNSService {
    private JmDNS jmdns;

    public void registerService(String serviceName, int port) {
        try {
            jmdns = JmDNS.create();
            ServiceInfo serviceInfo = ServiceInfo.create("_http._tcp.local.", serviceName, port, "My MDNS service");
            jmdns.registerService(serviceInfo);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public void discoverServices(String serviceType) {
        try {
            jmdns = JmDNS.create();
            jmdns.addServiceListener(serviceType, new ServiceListener() {
                @Override
                public void serviceAdded(ServiceEvent event) {
                    // Service added event
                }

                @Override
                public void serviceRemoved(ServiceEvent event) {
                    // Service removed event
                }

                @Override
                public void serviceResolved(ServiceEvent event) {
                    // Service resolved event
                }
            });
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}
  1. 在您的应用程序中使用MDNSService类来注册和发现服务。例如,在您的Activity中:
MDNSService mDNSService = new MDNSService();
mDNSService.registerService("MyService", 8080);
mDNSService.discoverServices("_http._tcp.local.");

通过以上步骤,您可以在Android项目中启用MDNSD功能,并实现服务的注册和发现。

0