Basic knowledge of IOS development-fragment 11, basic knowledge of ios-Fragment

Basic knowledge of IOS development-fragment 11, basic knowledge of ios-Fragment

1: AFNetwork determines the network status

# Import "AFNetworkActivityIndicatorManager. h "-(BOOL) application :( UIApplication *) application syntax :( NSDictionary *) launchOptions {// network [[sharesharedmanager] setEnabled: YES]; [[AFNetworkReachabilityManager sharedManager] startMonitoring]; // network status judgment [[AFNetworkReachabilityManager sharedManager] statuses: ^ (AFNetworkReachabilityStatus status) {switch (status) {case when: {[self showMBPHudTipStr: @ "No network connection currently"]; break;} case AFNetworkReachabilityStatusReachableViaWiFi: {[LogUtil logUtilstring: @ "WiFi network"]; break;} case when: {[self showMBPHudTipStr: @ "wireless network"]; break ;} default: break ;}}]; return YES ;}

2: UIButton countdown

When the countdown uibutton cannot be responded to the event;-(void) startTime {_ block int timeout = 60; // The countdown time dispatch_queue_t queue = dispatch_get_global_queue (expiration, 0 ); dispatch_source_t _ timer = dispatch_source_create (hour, 0, 0, queue); hour (_ timer, dispatch_walltime (NULL, 0), 1.0 * NSEC_PER_SEC, 0 ); // execute dispatch_source_set_event_handler (_ timer, ^ {if (timeout <= 0 ){/ /When the countdown ends, disable dispatch_source_cancel (_ timer); dispatch_async (dispatch_get_main_queue (); ^ {// you can set self according to your needs. againBtn setTitle: @ "resend verification code" forState: UIControlStateNormal]; self. againBtn. userInteractionEnabled = YES; self. labNoMessage. text = @ "didn't you receive the verification code? "; Self. labNoMessage. textColor = [UIColor redColor] ;}) ;}else {int seconds = timeout % 60; NSString * strTime = [NSString stringWithFormat: @ "%. 2d ", seconds]; dispatch_async (dispatch_get_main_queue (), ^ {// set the interface button to set [self. againBtn setTitle: [NSString stringWithFormat: @ "resend activation email (% @)", strTime] forState: UIControlStateNormal]; self. againBtn. userInteractionEnabled = NO; self. labNoMessage. text = @ "successful email activation"; self. labNoMessage. textColor = [UIColor colorWithHexString: @ "84BF20"] ;}); timeout -- ;}}); dispatch_resume (_ timer );}

3: Determine the iphone Device

#define IS_IPAD (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)#define IS_IPHONE (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)#define IS_RETINA ([[UIScreen mainScreen] scale] >= 2.0)#define SCREEN_WIDTH ([[UIScreen mainScreen] bounds].size.width)#define SCREEN_HEIGHT ([[UIScreen mainScreen] bounds].size.height)#define SCREEN_MAX_LENGTH (MAX(SCREEN_WIDTH, SCREEN_HEIGHT))#define SCREEN_MIN_LENGTH (MIN(SCREEN_WIDTH, SCREEN_HEIGHT))#define IS_IPHONE_4_OR_LESS (IS_IPHONE && SCREEN_MAX_LENGTH < 568.0)#define IS_IPHONE_5 (IS_IPHONE && SCREEN_MAX_LENGTH == 568.0)#define IS_IPHONE_6 (IS_IPHONE && SCREEN_MAX_LENGTH == 667.0)#define IS_IPHONE_6P (IS_IPHONE && SCREEN_MAX_LENGTH == 736.0)

4: An Automatic Layout BUG is reported below IOS8, while IOS8 works normally.

The APP will be suspended. BUG content: Terminating app due to uncaught exception 'nsinternalinconsistencyexception', reason: 'Auto Layout still required after executing-layoutSubviews.
UITableView's implementation of-layoutSubviews needs to call super. '-(void) layoutSubviews {// The automatically layout content is placed before super layoutSubviews [self _ updateConstraints]; [super layoutSubviews];}

5: interact with JS and make JS Code compatible with android and IOS

JS Code: $ (function () {var u = navigator. userAgent, app = navigator. appVersion; var isAndroid = u. indexOf ('android')>-1 | u. indexOf ('linux ')>-1; // android terminal or uc browser var isiOS = !! U. match (/\ (I [^;] +; (U ;)? CPU. + Mac OS X/); // ios terminal if (isAndroid) {$ ('# btn_Success '). attr ('href ', 'javascript: mailActive. backHome () ');} else if (isiOS) {$ (' # btn_Success '). attr ('href ', 'protoclo: // backhome') ;}}); While IOS is shouldStartLoadWithRequest:-(BOOL) webView :( UIWebView *) webView shouldStartLoadWithRequest :( NSURLRequest *) request navigationType :( UIWebViewNavigationType) navigationType {NSString * newURL = [[request URL] absoluteString]; if ([newURL hasPrefix: @ "protoclo: //"]) {NSArray * stringArray = [newURL componentsSeparatedByString: @ "//"]; if (stringArray. count> 1 & [[stringArray objectAtIndex: 1] isdomaintostring: @ "backHome"]) {[self webJavascriptBackHome] ;}} return YES;} note: it is better to use WebViewJavascriptBridge, a third-party plug-in for JS interaction in IOS. You can use Safari to debug embedded webView during IOS development and debugging. It can set the development mode menu, developers-> ios simulator can view the running details of web pages (Safari-> preference settings-advanced-show "development" in the menu ");