如何摆脱Android验证错误

Question

我正在使用此方法来获取BroadCast地址数组。

一些使用的方法和类在旧的API中不存在，因此我在方法的开头添加了版本检查。我试图在Android 1.6模拟器上运行此检查，但由于验证错误而失败。

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仅在API Level 4及更高版本中可用。 我正在寻找这些问题的解决方法

Answer 1

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，这也是为什么会出现错误的原因。 您必须制作一个调用getInterfaceAddress()的包装器类，以使它根本不会被加载。