android网络操作（wifi，apn）

开关wifi

检查网络是否连通

检查接入点类型，检查网络类型

权限

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />

<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />

<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

<uses-permission android:name="android.permission.INTERNET" />

public static final byte NET_TYPE_UNCONNECT = -1;

public static final byte NET_TYPE_WAP = 0;

public static final byte NET_TYPE_NET = 1;

public static final byte NET_TYPE_WIFI = 2;

public static final byte SIM_TYPE_NOCARD = -1;

public static final byte SIM_TYPE_CM = 0;

public static final byte SIM_TYPE_UNI = 1;

public static final byte SIM_TYPE_3G = 2;

public static final byte SIM_TYPE_CT = 3;

public static final Uri PREFERRED_APN_URI = Uri

.parse("content://telephony/carriers/preferapn");

public static final Uri APN_TABLE_URI = Uri

.parse("content://telephony/carriers");

/**

* 查看wifi 状态

* @param context

* @return

*/

public static int getWifiState(Context context){

WifiManager wm = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);

if(wm !=null ){

return wm.getWifiState();

}else{

return -1;

}

}

/**

* 关闭wifi

* @param context

*/

public static void switchWifi(Context context,boolean switch){

WifiManager wm = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);

if(wm !=null ){

Log.d("wifi", "wifi 操作"+switch);

wm.setWifiEnabled(switch);

}

}

/**

* 判断网络是否连通

*

* @param ctx

* @return

*/

public static boolean isNetworkAvailable(Context ctx) {

ConnectivityManager cm = (ConnectivityManager) ctx

.getSystemService(Context.CONNECTIVITY_SERVICE);

NetworkInfo info = cm.getActiveNetworkInfo();

if (info != null)

Log.i("net", info.toString());

return (info != null && info.isAvailable());

}

/**获得当前sim卡 运营商类型

*

* @return

*/

public int getSimType(){

int type =SIM_TYPE_NOCARD;

TelephonyManager phoneManager = (TelephonyManager) context

.getSystemService(Context.TELEPHONY_SERVICE);

if (phoneManager != null) {

String imsi = phoneManager.getSubscriberId();

if(imsi!=null){

if(imsi.startsWith("46000") || imsi.startsWith("46002")){

//中国移动

type = SIM_TYPE_CM;

}else if(imsi.startsWith("46001")){

//中国联通

type = SIM_TYPE_UNI;

}else if(imsi.startsWith("46003")){

//中国电信

type = SIM_TYPE_CT;

}

}

}

return type;

}

/**

* 获得当前联网类型WIFI OR CMNET OR CMWAP

*

* @return

*/

public int getNetWorkType() {

int type = NET_TYPE_UNCONNECT;

ConnectivityManager m_ConnectivityManager = (ConnectivityManager) context

.getSystemService(Context.CONNECTIVITY_SERVICE);

if (m_ConnectivityManager != null) {

NetworkInfo networkInfo = m_ConnectivityManager

.getActiveNetworkInfo();

if (networkInfo != null) {

switch (networkInfo.getType()) {

case ConnectivityManager.TYPE_WIFI:

type= NET_TYPE_WIFI;

break;

case ConnectivityManager.TYPE_MOBILE:

String apn = networkInfo.getExtraInfo();

if (apn != null && apn.indexOf("wap") != -1) {

type= NET_TYPE_WAP;

break;

}else{

type= NET_TYPE_NET;

break;

}

}

}

}

return type;

}

/**

* 根据apn名字获取APN　ID

*

* @param name

* @return

*/

public int getApnId(String apnName) {

String tag = "getApnId";

String projection[] = { "_id,apn,type,current,mnc" };// current不为空表示可以使用的APN, current为1的才会显示

int id = -1;

Cursor cr = null;

String apn = null;

String current = null;

try {

cr = resolver.query(APN_TABLE_URI, projection, null, null, null);

if (cr != null) {

cr.moveToLast();

do {

apn = cr.getString(cr.getColumnIndex("apn"));

current = cr.getString(cr.getColumnIndex("current"));

if (apn != null && current != null && "1".equals(current)

&& apn.equals(apnName)

// && mnc.equals("02")

){

id = cr.getInt((cr.getColumnIndex("_id")));

break;

}

} while (cr.moveToPrevious());

cr.close();

}

} catch (Exception e) {

e.printStackTrace();

Log.e(TAG, e.toString());

} finally {

if (cr != null)

cr.close();

}

return id;

}

/**

* 将选中的接入点设置为当前接入点

*/

public boolean SetDefaultAPN(int id) {

boolean res = false;

ContentValues values = new ContentValues();

values.put("apn_id", id);

Cursor c = null;

try {

resolver.update(PREFERRED_APN_URI, values, null, null);

c = resolver.query(PREFERRED_APN_URI,

new String[] { "name", "apn" }, "_id=" + id, null, null);

if (c != null) {

res = true;

c.close();

}

} catch (Exception e) {

e.printStackTrace();

Log.e(TAG, e.toString());

} finally {

if (c != null) {

c.close();

}

}

return res;

}