Android中监测是否打开网络的设置

public static boolean NetworkConnect(Context context) {
// 获得网络状态管理器
ConnectivityManager connectivityManager = (ConnectivityManager) context
.getSystemService(Context.CONNECTIVITY_SERVICE);

if (connectivityManager == null) {
return false;
} else {
// 建立网络数组
NetworkInfo[] net_info = connectivityManager.getAllNetworkInfo();

if (net_info != null) {
for (int i = 0; i < net_info.length; i++) {
// 判断获得的网络状态是否是处于连接状态
if (net_info[i].getState() == NetworkInfo.State.CONNECTED) {
return true;
}
}
}
}
return false;
}

// 如果没有网络，则弹出网络设置对话框
public static void checkNetwork(final Activity activity) {
if (!IsInternet.isNetworkAvalible(activity)) {
TextView msg = new TextView(activity);
msg.setText("当前没有可以使用的网络，请设置网络！");
new AlertDialog.Builder(activity)
.setTitle("网络状态提示")
.setView(msg)
.setPositiveButton("确定",
new DialogInterface.OnClickListener() {

public void onClick(DialogInterface dialog,
int whichButton) {
// 跳转到设置界面
activity.startActivityForResult(new Intent(
Settings.ACTION_WIRELESS_SETTINGS),
0);
}
}).create().show();
}
return;
}
s