安卓开发dns怎么解析域名

// 示例代码：使用InetAddress进行DNS解析
try {
    InetAddress address = InetAddress.getByName("example.com");
    System.out.println("IP Address: " + address.getHostAddress());
} catch (UnknownHostException e) {
    e.printStackTrace();
}

// 示例代码：清除DNS缓存（需要root权限）
Process process = Runtime.getRuntime().exec("su");
DataOutputStream os = new DataOutputStream(process.getOutputStream());
os.writeBytes("ndc resolver flushdefaultif\n");
os.flush();
os.writeBytes("exit\n");
os.flush();
process.waitFor();

// 示例代码：配置DNS服务器
NetworkRequest.Builder builder = new NetworkRequest.Builder();
builder.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET);
builder.addTransportType(NetworkCapabilities.TRANSPORT_WIFI);
ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
cm.registerNetworkCallback(builder.build(), new ConnectivityManager.NetworkCallback() {
    @Override
    public void onAvailable(Network network) {
        super.onAvailable(network);
        // 配置DNS服务器
        LinkProperties linkProperties = cm.getLinkProperties(network);
        if (linkProperties != null) {
            List<DnsServer> dnsServers = new ArrayList<>();
            dnsServers.add(DnsServer.newBuilder().setAddress(InetAddress.getByName("119.29.29.29")).build());
            linkProperties.setDnsServers(dnsServers);
        }
    }
});