Get Data on a webpage (picture, text, video)-B

Demo Address: http://download.csdn.net/detail/u012881779/8831835

Get all the pictures on the page, get all the HTML, get the page title, get the page content text ...

. h File Code:

//网页  //NSString *strPath = [NSString stringWithFormat:@"http://www.baidu.com/s?wd=%@&cl=3",theWord];  //视频  //NSString *strPath = [NSString stringWithFormat:@"http://www.itinge.com/music/16241.mp4"];  //图片  NSString *strPath = [NSString stringWithFormat:@"http://image.baidu.com/search/index?tn=baiduimage&istype=2&ie=utf-8&word=%@",theWord];  strPath = [strPath stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

. m file Code:

@interface Viewcontroller () <uisearchbardelegate, uiwebviewdelegate,uigesturerecognizerdelegate>  @ Property (weak, nonatomic) Iboutlet Uisearchbar *searchbar;   @property (weak, nonatomic) Iboutlet UIWebView *webview;   @end   @implementation Viewcontroller  -(void) viewdidload {     [super viewdidload]; nbsp    _searchbar.delegate = self;      _webview.delegate = self;      [self Addtaponwebview];  }  -(void) addtaponwebview{     uitapgesturerecognizer* singletap = [[ UITapGestureRecognizer Alloc] initwithtarget:self action: @selector (Handlesingletap:)];      [_webview Addgesturerecognizer:singletap];      singletap.delegate = self;      singletap.cancelstouchesinview = NO;  }   #pragma mark-tapgesturerecognizer  -(BOOL) Gesturerecognizer: (Uigesturerecognizer *) Gesturerecognizer ShouldrecognizesimultaneouslywithgesturErecognizer: (Uigesturerecognizer *) othergesturerecognizer{     return YES;    //is clicked on the location corresponding to the link & nbsp;-(void) Handlesingletap: (UITapGestureRecognizer *) sender{     cgpoint pt = [Sender Locationinview: _webview];      nsstring *imgurl = [NSString stringwithformat:@ "Document.elementfrompoint (%f,%f). Src", pt.x, Pt.y] ;      nsstring *urltosave = [_webview Stringbyevaluatingjavascriptfromstring:imgurl];      nslog (@ "Image url=%@", urltosave);      nsstring * Jstogethtmlsource = @ "Top.location.href";      nsstring * Pagesource = [_webview   Stringbyevaluatingjavascriptfromstring:jstogethtmlsource] ;      nslog (@ "\n\n__url=%@", Pagesource);      if (Urltosave.length > 4) {         nsstring *substr = [Urltosave Substri NGFROMINDEX:URLTOSAVE.LENGTH-3];          if ([substr isequaltostring:@ "jpg"] | | [substr isequaltostring:@ "png") {             [self Showimageurl:urltosave point:pt];          }      }  }  //renders the image, whether the HTML adaptation resolution will affect whether the click resource is consistent with the obtained resource  -( void) Showimageurl: (nsstring *) URL point: (cgpoint) point  {     uiimageview *showview = [[ Uiimageview alloc] Initwithframe:[[uiscreen Mainscreen]bounds]];      showview.center = point;      cgpoint newpoint = Self.view.center;      showview.center = Newpoint;      showview.backgroundcolor = [Uicolor blackcolor];      showview.alpha = 1;      showview.userinteractionenabled = YES;      [self.view Addsubview:showview];      [showview Setcontentmode:uiviewcontentmodescaleaspectfit];      [showview Showimagefromurl:url Placeholder:nil Completionblock:nil];      uitapgesturerecognizer* SinglETap = [[UITapGestureRecognizer alloc] initwithtarget:self action: @selector (Handlesingleviewtap:)];      [showview Addgesturerecognizer:singletap];      [self.navigationcontroller Setnavigationbarhidden:yes Animated:yes];  }  //Remove Picture view view  -(void) Handlesingleviewtap: (UITapGestureRecognizer *) Sender  {     for (id obj in self.view.subviews) {         if ([obj Iskindofclass:[uiimageview class]) {             [obj Removefromsuperview],          }   &N Bsp &NBSP,}      [self.navigationcontroller setnavigationbarhidden:yes Animated:yes];  }  -(void) didreceivememorywarning {     [super didreceivememorywarning];      //Dispose of any of the resources that can recreated.   }  /* *javascript get the Web information summary get all html:nsstring *ljs = @ "Document.documentElement.innerHTML"; Get Web Title:nssTring *ljs2 = @ "Document.title";  UIWebView *lwebview = [self getcurrentwebview];  NSString *LHTML1 = [Lwebview Stringbyevaluatingjavascriptfromstring:ljs];  NSString *LHTML2 = [Lwebview stringbyevaluatingjavascriptfromstring:ljs2]; JavaScript gets Web page information summary JavaScript gets the current page URL, title, etc. thisurl = document.  URL;  Thishref = Document.location.href;  Thissloc = Self.location.href;  Thisdloc = document.location;  Thistloc = Top.location.href;  Thisploc = parent.document.location;  Thisthost = Top.location.hostname;  Thishost = Location.hostname;  Thistitle = Document.title;  Thisprotocol = Document.location.protocol;  Thisport = Document.location.port;  Thishash = Document.location.hash;  Thissearch = Document.location.search;  Thispathname = Document.location.pathname;  thishtml = Document.documentElement.innerHTML; Thisbodytext = document.documentelement.innertext;//Get page content text Thisbodytext = document.body.innertext;//Get page content text   How is it the same as last? If you know, please explain * *  //get  -(ibaction) receiveaction:(ID) Sender {     /*1 video */     /*    //Get all videos in the webpage     NSString *GETVI  Deotitle = [_webview getvideotitle];      NSLog (@ "\ n \ nthe video name:%@", getvideotitle);      Double getvideoduration = [_webview getvideoduration];      NSLog (@ "\ n \ nthe total video time:%f", getvideoduration);      Double getvideocurrenttime = [_webview getvideocurrenttime];      NSLog (@ "\ n \ nthe video current time:%f", getvideocurrenttime);     *      /*2 page */     /*    //get all the pictures in the web    nsstring *imag Eurls = [_webview stringbyevaluatingjavascriptfromstring:@ "var str=new Array ();" "  $ (' img '). each (function () {Str.push ($ (this). attr (' src '));}); "                            "Str.join (', ');"];     nslog (@ "\ n \ All pictures:%@", imageurls);    //get all html    nsstring *ljs = @ "Document.documentElement.innerHTML";     nsstring *LHTML1 = [_webview Stringbyevaluatingjavascriptfromstring:ljs];     //nslog (@ "1.%@", LHTML1);     //Get page title:    nsstring *ljs2 = @ "Document.title";     nsstring *LHTML2 = [_webview stringbyevaluatingjavascriptfromstring:ljs2];     nslog (@ "2.%@", LHTML2);    //thisurl = document. URL    nsstring *LJS3 = @ "document.  URL ";     nsstring *LHTML3 = [_webview stringbyevaluatingjavascriptfromstring:ljs3];     nslog (@ "3.%@", LHTML3);     //get Web content text    nsstring *ljs4 = @ "Document.documentElement.innerText";     nsstring *LHTML4 = [_webview stringbyevaluatingjavascriptfromstring:ljs4];     nslog (@ "4.%@", LHTML4);     //get Web content text    nsstring *ljs5 = @ "Document.body.innerText";     nsstring *LHTML5 = [_webview stringbyevaluatingjavascriptfromstring:ljs5];     nslog (@ "5.%@", LHTML5);    */  &nbsp  /*3 Pictures */     /**/     //get all HTML      nsstring *innerhtml = @ "Document . documentelement.innerhtml ";      nsstring *innerhtmlstring = [_webview stringbyevaluatingjavascriptfromstring:innerhtml];      //retrieving pictures      if (![ Innerhtmlstring isequaltostring:@ "

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Article/author: Feng Zhi ought

C Blog Address: http://blog.csdn.net/wsyx768/article/details/46618125

Get Data on a webpage (picture, text, video)-B