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我正在使用这种方法来获取广播地址数组。

旧 API 中不存在一些使用的方法和类所以我在方法的开头添加了版本检查。我试图在 Android 1.6 模拟器上运行它，但它失败并出现验证错误。

private InetAddress[] getBroadCast() throws SocketException
{

    int currentapiVersion = android.os.Build.VERSION.SDK_INT;
    if (currentapiVersion < 9)
    {       
        try {
            String ipString = getWifiIp();
            int loc = ipString.lastIndexOf(".");
            InetAddress baddrs[] = new InetAddress[1];
            baddrs[0] = new InetAddress.getByName(ipString.substring(0, loc)+".255");
            return baddrs;
        } catch (UnknownHostException e) {
            e.printStackTrace();
            return null;
        }
    }
            else{
    String bcast="";
    for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {
        NetworkInterface intf = en.nextElement();

        for (InterfaceAddress address : intf.getInterfaceAddresses()) {
            if(address.getBroadcast()!=null) bcast=bcast+address.getBroadcast().toString().substring(1)+"::";
        }}
    String[] bcastarray= bcast.split("::");
    InetAddress baddrs[] = new InetAddress[bcastarray.length];
    for(int i=0;i<bcastarray.length;i++)
        try {
            baddrs[i] = new  InetAddress.getByName(bcastarray[i]);
        } catch (UnknownHostException e) {
            e.printStackTrace();
        }
    return baddrs;
}
 }

这些是出现的错误

10-12 11:38:22.030: W/dalvikvm(297): VFY: unable to resolve virtual method 4463: Ljava/net/NetworkInterface;.getInterfaceAddresses ()Ljava/util/List;
10-12 11:38:22.030: W/dalvikvm(297): VFY:  rejecting opcode 0x6e at 0x0071
10-12 11:38:22.040: W/dalvikvm(297): VFY:  rejected Lhello/BroadcastSend;.getBroadCast ()[Lhello/IPMAddress;
10-12 11:38:22.040: W/dalvikvm(297): Verifier rejected class Lhello/BroadcastSend;
10-12 11:38:22.040: W/dalvikvm(297): threadid=19: thread exiting with uncaught exception (group=0x4001aa28)

android.os.Build.VERSION.SDK_INT 仅适用于 API 级别 4 及更高版本。我正在寻找解决这些问题的方法

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1 回答 1

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这不适用于 1.6。1.6 类加载器将尝试检查所有方法，即使您实际上没有调用它们，这就是您收到错误的原因。您必须创建一个调用 的包装类getInterfaceAddress()，这样它就不会被加载。

于 2012-10-13T08:58:30.180 回答