iphone - How to detect zoom scale of UIWebView -

-

I want to increase the height of UIWebView , while user zoom in (like the default mail app in the iPhone ). So, to find the scrollview in the webview and to use UIScrollViewDelegate to add the scrollViewDidZoom zoom scale to add the height of the webview on this method Have tried the code below. 

  // MessageAppDelegate.h @interface MessageAppDelegate: NSObject & LT; UIApplicationDelegate, UIWebViewDelegate, UIScrollViewDelegate & gt; {UIWebView * webview; UIScrollView * scrollview; } //MessageAppDelegate.m - (bool) Application: (UIApplication *) application didFinishLaunchingWithOptions: (NSDictionary *) launchOptions {[self.window makeKeyAndVisible]; Webview = [[UIWebView alloc] initWithFrame: CGRectMake (0, 150, 320, 100)]; Webview.delegate = self; Webview.scalesPageToFit = Yes; Webview.userInteractionEnabled = Yes; [Webview Load HTML String: @ "Meta Name = \" Viewport \ "content = \" width = device-width, initial-scale = 1.0, max-scale = 6.0 user-scalable = yes \ "test test" Basic URL: zero ]; [Self. Window Adsview: Webview]; Find the scrollview in web view for // (see in UIView * webview.subviews {if ([view isKindOfClass: [UIScrollView class]]) // // UIScrollView object scrollview = (UIScrollView *) view; Scrollview.delegate = self; }} Yes return; } - Scrollview (UIView *) with Scrollview and Zooming: (UIScrollView *) Scale: (float) scale {nslog (@ "scale% f", scale); } - (Zero) ScrollViewz Zoom: (UIScrollView *) ScrollView {NSLog (@ "scrollwidid zoom% F", scrollview zoomscale); }   
 The problem is that I can not zoom in / out on the webview, but the  NSLog  scrollViewDisEndZooming  method shown  
 
 scale 1.0   
 When I ended zooming and the  scrollViewDidZoom  method did not show anything. I want to search the webview's zoom scale to calculate my height at  scrollViewDidZoom .  
 What have I done? help please.  
 Thanks in advance.   
 
 
 I've done well for your code, follow the following amendments:  < P> You can get scrollview points only, then you can get the ScrollView content size.width, which you can change while zooming in, but scrollview.zoomScale always remains. To use contensize.width to calculate scale  
  @interface dictViewController:. UIViewController & LT; UIWebViewDelegate, UITextFieldDelegate, UIGestureRecognizerDelegate, UIScrollViewDelegate & gt; {UIScrollView * scrollview; ...................... //scrollview.delegate = self; (See in UIView * webViewM.subviews) {if ([view isKindOfClass: [UIScrollView class]]) // // View UIScrollView object scrollwaves = (UIScrollView *); //scrollview.delegate = self; }} / * - (zero) scrollViewDidEndZooming: (UIScrollView *) scrollview withView: (UIView *) view atScale: scale ({// NSLog (@ "scale zooming% f", scale); } - (Zero) ScrollViewz Zoom: (UIScrollView *) ScrollView {// NSLog (@ "scrollwidid zoom% F", scrollview.zuscale); } * / - (zero) Swipete Action: (ID) kept in mind {nslog (@ "wid =% f", scrollview.contentSize.width); NSLog (@ "zoomscale =% F", scrollview zoomscale); }

Comments

Post a Comment

Popular posts from this blog

qt - switch/case statement in C++ with a QString type -

-
I want to use switch-case in my program but the compiler generates an error. How can I use the switch statement with QString ? The compiler gives me this error: The expression of the switch type 'QString' is invalid My code is as follows : boolStopWord (the word QString) {bool flag = false; Switch (word) {case "the": flag = true; break ; "On" case: flag = true; break ; Case "in": flag = true; break ; Case "your": flag = true; break ; Case "near": flag = true; break ; Case "all": flag = true; break ; Case "this": flag = true; break ; } Return flag; } How do I use the switch statement with a Caststring ? You can not use the switch statement in C ++ language with integral or enum types. You can formally enter the square type of object in the switch statement, but this means that the compiler will look for a user-defined conversion to convert it to an integral or enum type.
Read more

python - sqlite3.OperationalError: near "REFERENCES": syntax error - foreign key creating -

-
I'm trying to create a predefined key after checking the manual and I wrote it: Db.execute ("create table" Table 2 (id, integer primary key, somedata integer) "db.execute" (table creation table 2 does not exist (name text, maintain reference (id) ") and found this: sqlite 3. Operation error: near" references ": syntax error Your second ligne is wrong db.execute ("create table if table does not exist 2 (name text, my_id integer, foreign key (my_id) reference Maintenance (ID)) ") as explained
Read more

Python's equivalent for Ruby's define_method? -

-
What is a Python equivalent for Ruby's define_method , which is the dynamic generation of class methods will allow? (As can be seen in Wikipedia) Functions are first-class objects in Python and assign them The properties of a class or an example can be a way of doing the same thing as a Wikipedia example: colors = {"black": "000", "red": "F00", "green": "0f0", "yellow": "ff0", "blue": "00f", "magenta": "fff", "cyan": "0ff", "white": " FFF "} Class MyStream (ARR): Pass for Name, Code in colors.iteritems (): def _in_colour ( W code = code): return '& lt; Span style = "color:% s" & gt;% s & lt; / Span & gt; ' % (Code, self) setter (histrive, "in_" + name, _in_ color)
Read more