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App Inventor 2开发计步器与定位器 - App Inventor 2 中文网 - 清泛IT论坛，有思想、有深度
...时也会一直没有读数。例如，如果你在室内而且没有连接WiFi，设备将无法获得读数。无法获得读数的另一个原因，可能是你的手机出于省电的目的，关闭了GPS功能。如果你的位置传感器一直收不到数据，你需要逐一排查上述可...
Differences between cookies and sessions?
...te you. This has happened in online gambling scenarios -- Sniff the hotel wifi, steal a session ID, and access the account. Securing a session is another story altogether.
– Chris Cudmore
Jan 13 '15 at 13:51
...
Java内存泄露原因详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...，通常一个应用当中会用到很多监听器，我们会调用一个控件的诸如addXXXListener()等方法来增加监听器，但往往在释放对象的时候却没有记住去删除这些监听器，从而增加了内存泄漏的机会。
4、各种连接
比如数据库连接（dataS...
Error Domain=NSURLErrorDomain Code=-1005 “The network connection was lost.”
...mulator reset and to restart the Mac. I often change places with different wifi spots and this is a procedure that fixes the issue for me.
– Vladimír Slavík
Oct 29 '15 at 10:18
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Detect if Android device has Internet connection
...y, to use a known hack that Android already uses to check if the connected WiFi network has Internet access. This is a lot more efficient over grabbing the entire Google home page. See here and here for more info.
public static boolean hasInternetAccess(Context context) {
if (isNetworkAvailable...
How to check if Location Services are enabled?
... saw this first-hand with a phone I was testing with, and even though both Wifi and GPS were enabled they appeared dead... to my app. Unfortunately, I since enabled the setting and can no longer reproduce the original scenario, even when disabling that "Access to my location" setting. So I can't say...
Excel RTD(Excel Real-Time Data)实时刷新数据技术 - C/C++ - 清泛网 - 专注C/C++及内核技术
...p，而不是注册事件回调的方式，所以需要在RTD中使用timer控件去主动拉去请求，然后请求处理完成之后，将结果存储到对象中，然后调用UpdateNotify方法通知Excel来更新。RTD函数其实是一个注册为Com组件的类库，所以我们首先创建...
Proper way to exit iPhone application?
...ure of the problem and possible actions the user could take — turning on WiFi, enabling Location Services, etc. Allow the user to terminate the application at their own discretion.
WARNING: Do not call the exit function. Applications calling exit will appear to the user to have crashed, ...
How to connect android emulator to the internet
... @Iammesol, I believe step 3 means drag you active connection name (say wifi / ethernet) to top. At least it worked for me.
– Himel Nag Rana
Jan 19 '17 at 4:23
add a commen...
How do I speed up the gwt compiler?
... NX client is also a huge +++ for remote dev on limited ADSL, Cable, or WiFi connections. Plus you always are in sync no matter what comp you are using at any location w/ internet
– kr.
Feb 11 '10 at 20:29
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