3g

问题 I have an indicator on my application to display the network type (2G or 3G or 4G) but after getting the network type, how do I know what speed category it should be in? I know how to detect the network type: private TelephonyManager telephonyManager; telephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE); CurrentNetworkType = telephonyManager.getNetworkType(); Given the possible return values: // public static final int NETWORK_TYPE_1xRTT // Since: API Level 4 //

问题 How can I turn off 3G/Data programmatically on Android? Not Wifi, but 3G/Data. 回答1: There is no official way to do this. However, it can be achieved unofficially with reflection. For Android 2.3 and above: private void setMobileDataEnabled(Context context, boolean enabled) { final ConnectivityManager conman = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); final Class conmanClass = Class.forName(conman.getClass().getName()); final Field iConnectivityManagerField

问题 Everything's in the question title I guess... I tried the findmyip kind of site, but the IP addresses for 3g usb sticks are no good to indicate the device's position... 回答1: It is possible yes, but it depends on what you're limitations are and how the routing of the traffic is done by the provider and what distance you're willing to consider accurate. If you're talking street-corner accuracy, then you aren't going to see that without using the device to gather information on "landmarks" (i.e.

问题 Might be a stupid question, but I don't know the logic behind. On a Wifi enabled device, GPS coordinates are accurate.(as expected) Disable Wifi and enable 3G gives a inaccurate coordinates (device location is same as in point 1.). when a distance is calculated from coordinates in point 1. and 2. Google maps shows a 5min walking distance. could someone explain the above behavior and is it possible to have same coordinates with 3G?. 回答1: Android devices have three methods of calculating

问题 I have a situation where I would like to communicate between 2-4 devices over the 3G network (it should also work over WLAN, but 3G solution is critical). Every device (except one) asks for a GPS-location every ~5 seconds, but when this process is cancelled by the user of that device, one device needs to be informed of this event. I was thinking that one device could act as a server, and the rest as clients that should connect to the server. Is this possible over the 3G network? I've also

问题 I'm encountering a strange behavior - the (remotely hosted) images of my app are not showing up only in this situation: loaded using 3G on an iPhone using phonegap The images load okay when: I launch the app. with wifi (even from an hotspot) I launch the website version of the app (with mobile safari) I use an android + 3G I've done several searches on Google but found nothing about that case. (The images are remotely hosted on a public IP, accessible using 3G, the android version of my app

问题 I would like to know if someone knows why I can't send sms with my E226 3g modem. I have configured the example class, I setted modem model, PIN and Smsc number. public class SendMessage { public void doIt() throws Exception { OutboundNotification outboundNotification = new OutboundNotification(); System.out.println("Example: Send message from a serial gsm modem."); System.out.println(Library.getLibraryDescription()); System.out.println("Version: " + Library.getLibraryVersion());

问题 My iPhone app is web based.It works fine while running in WiFi and in 3G But the problem is when I run the app on WiFi and minimize it,and turn off the WiFi and switch to 3G-it shows no network. In user's case-when they use the app under WiFi and goes out it failed to connect with 3G network.I am using apple's Reachability class to check the network connection Anybody please tell any solution Do i code something to reconnect if the connection lost or switch from WiFi to 3G ? 回答1: You can use

问题 Failed to send mail with django's send_mail() over a 3g data connection as I tether from my phone. It takes a while and fails with a Network is unreachable error , Traceback (most recent call last): File "<console>", line 1, in <module> File "/root/.virtualenvs/local_env/local/lib/python2.7/site-packages/django/core/mail/__init__.py", line 62, in send_mail return mail.send() File "/root/.virtualenvs/local_env/local/lib/python2.7/site-packages/django/core/mail/message.py", line 283, in send

问题 I have written an app which uses an URLConnection to get a .html file. Everything works fine over wifi. But over 3g the file is not returned correctly. When i try to access the website via the browser it works fine. Anyone has a suggestion? Update: Here is my code: URL downloadUrl; URLConnection downloadConnection; InputStream inputStream; byte[] inputBytes; String[] output; private void downloadSource(String pUrl) { try { downloadUrl = new URL(pUrl); downloadConnection = downloadUrl