ios scheme url

In a previous iOS project, you would need to open a static page via UIWebView and in a static pageCall the relevant OBJECT-C code.first, the method of using JS to call Object-cabout how to call the functions and methods in Object-c using javascript, I searched for a long timeAll the methods on the net, basically pointed out a direction, that is in the UIWebView loaded in the JS codeBy changing the document.locations= "" and then callback the UIWebView

IOS url encoding and decoding - (NSString *)encodeToPercentEscapeString: (NSString *) input { // Encode all the reserved characters, per RFC 3986 // ( ) NSString *outputStr = (NSString *) CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault, (CFStringRef)input, NULL,

About-prefs:root=generalpath=aboutAccessibility-prefs:root=generalpath=accessibilityAirplane Mode On-prefs:root=airplane_modeAuto-lock-prefs:root=generalpath=autolockBrightness-prefs:root=brightnessBluetooth-prefs:root=generalpath=bluetoothDate Time-prefs:root=generalpath=date_and_timeFacetime-prefs:root=facetimeGeneral-prefs:root=generalKeyboard-prefs:root=generalpath=keyboardIcloud-prefs:root=castleICloud Storage Backup-prefs:root=castlepath=storage_and_backupInternational-prefs:root=general

In non-arc mode:-(NSString *) encodetopercentescapestring: (NSString *) input{NSString *outputstr = (NSString *) Cfurlcreatestringbyaddingpercentescapes (Kcfallocatordefault, (Cfstrin GREF) input, NULL, (cfstringref)@"!* ' ();: @=+$,/?%#[]", kCFStringEncodingUTF8); returnoutputstr;}-(NSString *) decodefrompercentescapestring: (NSString *) input{nsmutablestring*outputstr =[nsmutablestring Stringwithstring:input]; [Outputstr replaceoccurrencesofstring:@"+"withstring:@" "Options:nsliteralsearch Ran

+ (uiimage*) thumbnailimageforvideo: (nsurl *) Videourl attime: (nstimeinterval) Time { Avurlasset *asset = [[Avurlasset alloc] initwithurl:videourl options: nil]; Nsparameterassert (asset);　　Avassetimagegenerator *assetimagegenerator =[[avassetimagegenerator alloc] Initwithasset:asset]; Assetimagegenerator. appliespreferredtracktransform = YES; Assetimagegenerator. Aperturemode = Avassetimagegeneratoraperturemodeencodedpixels; Cgimageref thumbnailimageref = NULL; Cftimeinterval thumbnailimag