reachability

iOS app upload data to server as soon as network is available

由 纵然是瞬间 提交于 2020-01-06 05:44:27
问题 I have an app that tracks wildlife where the user enters data based on their observations (eg. user enters they see 3 moose). The data is then uploaded to a server. However, because this app will be used out in the field where there is often no internet connection, I want to save data if there is no connection, and upload the data as soon as the network is available I know about Reachability, but it looks like I can only check if the internet connection is available at that moment, and doesn

How Logical operators work with constant operand in objective c

由 送分小仙女□ 提交于 2020-01-06 01:35:30
问题 I am working on project where I have the checkInternet method in one of my class for verifying internet availability. In that method I have following code: For below code of line I am getting warning that, "Using Logical && with constant operand" for this code of block (flag && kSCNetworkFlagsReachable) . BOOL isavailable = NO; Boolean success; isavailable = success && (flag && kSCNetworkFlagsReachable) && !(flag & kSCNetworkFlagsConnectionRequired); and as a solution xcode giving option that

找不到头文件xxxxx.h file not found

由 梦想与她 提交于 2020-01-05 04:55:35
项目里有该文件，但是还是显示找不到。或者是cocopods打开的项目。 原因：.h文件路径找不到。具体找不到的原因有很多种。 1、一般会设置 IOS引用三方framewrok的头文件出现'xxxxx/xxxx.h' file not found问题解决方法 例如：xxxxxx'MAMapKit/MAMapKit.h' file not found 我们平时添加三方framework一般会这么设置。 小伙伴们，如果你遇到了上面说的错就看一下下面这张图是否做了同样的设置。 如果还是不行的话，很有可能是上面 填的路径根文件夹实际路径不同。 2、还有可能pods 的头文件找不到 #import "Reachability.h"找不到 首先找到下面配置文件： Reachability-Private.xcconfig 查看里面内容： #include "Reachability.xcconfig" GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1 HEADER_SEARCH_PATHS = "${PODS_ROOT}/Headers/Private" "${PODS_ROOT}/Headers/Private/Reachability" "${PODS_ROOT}/Headers/Public" "${PODS_ROOT}

Apple Reachability Notifications for Network OR Wi-Fi

由 点点圈 提交于 2020-01-04 15:25:47
问题 This is the code I use with Reachability in my app: - (void) handleNetworkChange:(NSNotification *)notice { NetworkStatus remoteHostStatus = [reachability currentReachabilityStatus]; if(remoteHostStatus == NotReachable) { UIAlertView *alertnew = [[UIAlertView alloc] initWithTitle:@"No Internet Connection!" message:@"Your device lost internet connection!" delegate:self cancelButtonTitle:@"Close" otherButtonTitles:@"Dismiss", nil]; [alertnew show]; } else if (remoteHostStatus ==

Can I prevent iPhone from using 3G under any circumstances?

由 人盡茶涼 提交于 2020-01-02 01:12:14
问题 I'm writing a travel guide related app that will download large databases (60meg) potentially overseas, with the reachability code I can tell when a host is reachable via wifi or 3g BUT I'm worried that if for some reason the wifi connection breaks for a minute or so as some DSL connections are likely to do on occasion the iphone will switch transparently to 3G and without realising I could be racking up someones phone bill with overseas data charges! So I'm wondering if anyone has any

iOS Reachability test

由 喜欢而已 提交于 2019-12-30 10:50:33
问题 For our app, we use the following code to check for internet connection whenever the app user is trying to post a message. When we test the feature, it works fine when turning on the airplane mode. Then when we turn off the airplane mode, the call to connected still returns NO. What could be the reason for that? Do we need extra "setup" in the order in order to get it right? such as listen to network state change notifications? + (BOOL)connected { Reachability *hostReach = [Reachability

SCNetworkReachabilityGetFlags returns 0 even when wireless available

由 元气小坏坏 提交于 2019-12-29 07:12:06
问题 I have an app that uses Apples reachability code. When I tab out of the app, turn on airplane mode, go back into the app, I correctly get a message that says no connection is available. If I go back out turn OFF airplane mode and go back into the app, I STILL get the message that no connection is available. The specific problem code is this: NetworkStatus status = kNotReachable; if (SCNetworkReachabilityGetFlags(reachabilityRef, &flags)) { status = [self networkStatusForFlags: flags]; return

SCNetworkReachabilityGetFlags returns 0 even when wireless available

由 最后都变了- 提交于 2019-12-29 07:11:27
问题 I have an app that uses Apples reachability code. When I tab out of the app, turn on airplane mode, go back into the app, I correctly get a message that says no connection is available. If I go back out turn OFF airplane mode and go back into the app, I STILL get the message that no connection is available. The specific problem code is this: NetworkStatus status = kNotReachable; if (SCNetworkReachabilityGetFlags(reachabilityRef, &flags)) { status = [self networkStatusForFlags: flags]; return

Detect the reachability in background

由 ∥☆過路亽．° 提交于 2019-12-29 04:13:53
问题 I have been testing different way to implement the possibility to know if the device get internet back when the app it is in background so the first code I test was the Apple reachability sample code http://developer.apple.com/library/ios/#samplecode/Reachability/Introduction/Intro.html But this code doesn´t notify internet state when the App it´s in background. So I tried also the folowing code and it work when App is launched from Background state to foreground (same as Apple reachability

Reachability not working when wi-fi connected but no internet

由 南楼画角 提交于 2019-12-28 21:49:08
问题 I am using Apple's reachability code, and am setting up both initial notifications on when network reachability changes and prior to initiating a server connection. The code works when I am on wi-fi and I turn the wi-fi access point off. However, when I start the app with wi-fi and the underlying broadband connection working, and then once the app is running, and then disconnect the wi-fi router from the broadband router (i.e. Wi-Fi is on but there is no internet connectivity), and I do a
订阅 reachability