Android网络相关代码

/**
     * 获取本机的Ip
     *
     * @return
     */
    public String getLocalIpAddress() {
        try {
            for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {
                NetworkInterface intf = en.nextElement();
                for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {
                    InetAddress inetAddress = enumIpAddr.nextElement();
                    if (!inetAddress.isLoopbackAddress()) {
                        return inetAddress.getHostAddress().toString();
                    }
                }
            }
        } catch (SocketException ex) {
            Log.e("WifiPreference IpAddress", ex.toString());
        }
        return null;
    }

/**
	 * 获取本机IP
	 *
	 * @return
	 * @throws SocketException
	 */
	public static String getRealIp() throws SocketException {
		String localip = null;// 本地IP，如果没有配置外网IP则返回它
		String netip = null;// 外网IP
		Enumeration<NetworkInterface> netInterfaces = NetworkInterface.getNetworkInterfaces();
		InetAddress ip = null;
		boolean finded = false;// 是否找到外网IP
		while (netInterfaces.hasMoreElements() && !finded) {
			NetworkInterface ni = netInterfaces.nextElement();
			Enumeration<InetAddress> address = ni.getInetAddresses();
			while (address.hasMoreElements()) {
				ip = address.nextElement();
				if (!ip.isSiteLocalAddress() && !ip.isLoopbackAddress() && ip.getHostAddress().indexOf(":") == -1) {// 外网IP
					netip = ip.getHostAddress();
					finded = true;
					break;
				} else if (ip.isSiteLocalAddress() && !ip.isLoopbackAddress() && ip.getHostAddress().indexOf(":") == -1) {// 内网IP
					localip = ip.getHostAddress();
				}
			}
		}

		if (netip != null && !"".equals(netip)) {
			return netip;
		} else {
			return localip;
		}
	}

　　

//Android  ping服务器命令
public boolean runPingIPprocess(String ip) {
        try {
            String pingStr = "ping -c 1 " + ip;
            Process p = Runtime.getRuntime().exec(pingStr);
            int status = p.waitFor();
            if (status == 0) {
                return true;
            } else {
                return false;
            }
        } catch (IOException e) {
            e.printStackTrace();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return false;
    }

public HttpURLConnection getConnection(String urlStr) throws IOException {
        URL url = new URL(urlStr);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setDoInput(true);
        conn.setDoOutput(true);
        conn.setRequestMethod("POST");
        conn.setConnectTimeout(5 * 1000);
        conn.setRequestProperty("Content-Type", "application/octet-stream");
        return conn;
    }

//Android4.0以后不能再主线程中打开连接
public void testNetThread(final String url) {
        new Thread() {
            public void run() {
                try {
                    Log.i(TAG, "url = " + url);
                    HttpURLConnection htpConn = getConnection(url);
                    htpConn.connect();
                    int code = htpConn.getResponseCode();
                    Log.i(TAG, "code = " + code);
                    if (200 == code) {
                          //连接成功
                        } else {

                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
            };
        }.start();
    }

/** 检测网络是否连接 */
    public static boolean checkNetWork(Context context) {
        // 获取网络通讯类的实例
        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        // 判断Android手机是否联网
        NetworkInfo info = cm.getActiveNetworkInfo();
        if (info != null && info.isConnected()) {
            return true;
        }
        return false;
    }

/**
     * 网络已经连接，然后去判断是wifi连接还是GPRS连接 设置一些自己的逻辑调用
     */
    public static int isNetworkAvailable(Context context) {
        // 得到网络连接信息
        ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        State gprs = manager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).getState();
        State wifi = manager.getNetworkInfo(ConnectivityManager.TYPE_WIFI).getState();
        if (gprs == State.CONNECTED || gprs == State.CONNECTING) {
             //gprs网络
            return NET_STATE_GPRS;
        } else if (wifi == State.CONNECTED || wifi == State.CONNECTING) {
           //wifi网络
            return NET_STATE_WIFI;
        }
        return 0;
    }

/** 无网络连接时提示设置网络 */
    public static void setNetWork(final Handler handler, final Context context) {
        AlertDialog.Builder builder = new AlertDialog.Builder(context);
        builder.setTitle("网络");
        builder.setMessage("网络未连接");
        builder.setPositiveButton("设置网络", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Intent intent = null;
                // 判断手机系统的版本 即API大于10 就是3.0或以上版本
                if (android.os.Build.VERSION.SDK_INT > 10) {
                    // 进入网络连接设置界面
                    intent = new Intent(android.provider.Settings.ACTION_SETTINGS);
                } else {
                    intent = new Intent();
                    ComponentName cn = new ComponentName("com.android.settings", "com.android.settings.WirelessSettings");
                    intent.setComponent(cn);
                    intent.setAction("android.intent.action.VIEW");
                }
                context.startActivity(intent);
            }
        });
        builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                handler.sendEmptyMessage(MSG_CLOSE);
            }
        });
        builder.show();
    }