【移动应用开发技术】android 中怎么判断网络连接

【移动应用开发技术】android中怎么判断网络连接

//判断是否为wifi连接

public

boolean

isWifiConnected(Context

context)

{

if

(context

!=

null)

{

ConnectivityManager

mConnectivityManager

=

(ConnectivityManager)

context

.getSystemService(Context.CONNECTIVITY_SERVICE);

NetworkInfo

mWiFiNetworkInfo

=

mConnectivityManager

.getNetworkInfo(ConnectivityManager.TYPE_WIFI);

if

(mWiFiNetworkInfo

!=

null)

{

return

mWiFiNetworkInfo.isAvailable();

}

}

return

false;

}

//判断是否为网络连接是否正常

public

boolean

isNetworkConnected(Context

context)

{

if

(context

!=

null)

{

ConnectivityManager

mConnectivityManager

=

(ConnectivityManager)

context

.getSystemService(Context.CONNECTIVITY_SERVICE);

NetworkInfo

mNetworkInfo

=

mConnectivityManager

.getActiveNetworkInfo();

if

(mNetworkInfo

!=

null)

{

return

mNetworkInfo.isAvailable();

}

}

return

false;

}

//判断网络连接类型

public

static

int

getConnectedType(Context

context)

{

if

(context

!=

null)

{

ConnectivityManager

mConnectivityManager

=

(ConnectivityManager)

context

.getSystemService(Context.CONNECTIVITY_SERVICE);

NetworkInfo

mNetworkInfo

=

mConnectivityManager

.getActiveNetworkInfo();

if

(mNetworkInfo

!=

null

&&

mNetworkInfo.isAvailable())

{

return

mNetworkInfo.getType();

}

}

return

-1;

}

//判断手机sim卡类型

public

static

String

get(Context

context)

{

TelephonyManager

telManager

=

(TelephonyManager)

context

.getSystemService(Context.TELEPHONY_SERVICE);

String

operator

=

telManager.getSimOperator();

if

(operator

!=

null)

{

if

(operator.equals("46000")

||

operator.equals("46002"))

{

//

中国移动

return

"移动";

}

else

if

(operator.equals("46001"))

{

return

"联通";

//

中国联通

}

else

if

(operator.equals("46003"))

{

return

"电信";

//

中国电信

}

}

return

"";

}

//判断手机是否能正常上网

进行ping操作，

即使判断手机连接了wifi了（热点没有上网），手机还是不能上网

private

static

final

boolean

ping()

{

String

result

=

null;

try

{

String

ip

=

"";//

除非百度挂了，否则用这个应该没问题~

Process

p

=

Runtime.getRuntime().exec("ping

-c

3

-w

100

"

+

ip);//ping3次

//

读取ping的内容，可不加。

InputStream

input

=

p.getInputStream();

BufferedReader

in

=

new

BufferedReader(new

InputStreamReader(input));

StringBuffer

stringBuffer

=

new

StringBuffer();

String

content

=

"";

while

((content

=

in.readLine())

!=

null)

{

stringBuffer.append(content);

}

Log.i("TTT",

"result

content

:

"

+

stringBuffer.toString());

//

PING的状态

int

status

=

p.waitFor();

if

(status

==

0)

{

result

=

"successful~";

return

true;

}

else

{

result

=

"failed~

cannot

reach

the

IP

address";

}

}

catch

(IOException

e)

{

result

=

"failed~

IOException";

}

catch

(InterruptedException

e)

{