如何使用VPNService拦截应用程序网络请求？

public class MyVpnService extends VpnService {
    // 实现必要的方法
}

Builder builder = new Builder();
builder.addAddress("192.168.0.1", 24);
builder.addRoute("0.0.0.0", 0);
builder.setSession("MyVPNService");
builder.setConfigureIntent(pendingIntent);

builder.addRoute("0.0.0.0", 0); // 将所有流量路由到VPN接口

public class MyVpnService extends VpnService {
    private ParcelFileDescriptor vpnInterface;

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Builder builder = new Builder();
        builder.addAddress("192.168.0.1", 24);
        builder.addRoute("0.0.0.0", 0);
        builder.setSession("MyVPNService");
        try {
            vpnInterface = builder.establish();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return START_STICKY;
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        if (vpnInterface != null) {
            try {
                vpnInterface.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}