Articles Tagged 'UIWebView'

Very short trick: log JavaScript objects

If you are to develop in an environment where it is impossible to use the debugging tools like FireBug , such as the Apple iPhone simulator in Xcode, it can become frustrating to find problems, including an incorrect access to all properties of an object. Here is that the use of works alert() is fundamental!

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Private APIs in the removal of the scroll in a UIWebView object

In Very short snippet: Remove scroll from a UIWebView object we saw how it was possible to remove the scroll from an object UIWebView :

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UIWebView: catch the opening of a Link

The object UIWebView component is a very useful and versatile, ideal for solving many problems. Not only is perfect to display an HTML page on the net, but you can use it for other useful purposes such as:

  • Quickly display PDF documents
  • View videos or pictures
  • Display content HTML / CSS local
  • Contained in the prototype stage fake ...

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Very short snippet: Remove scroll from one object to UIWebView

Documented or undocumented, a feature, sometimes, you are forced to implement by force! Useful in some situations, the scroll is to remove an object from UIWebView . : Interestingly, in general, see how you can access the components 'internal' part of the object in question: in this example retrieves the object pointer UIScrollView present in the subject UIWebView :

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Very short snippet: UIWebView, and display PDF files inside

The object UIWebView can be used to display several files. For example you can use it to display - as well as QuickTime movies or YouTube - PDF or HTML file included in our code.

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iPhone: Eliminate the shadow effect when scrolling a UIWebView

In this last period I worked on three applications for Apple iPhone, virtually simultaneously. Two have already been approved by Apple and are located on the App Store: thefirst and iMakeLove .

TheFirst iMakeLove

In both applications have adopted the use of an object UIWebView to display the instructions.
The object UIWebView ilevato was really comfortable in this case. It allowed me to quickly view and a nice text, images, and accompanied, if anything else is displayed on a Web page (Flash on iPhone not included).

TheFirst

The object UIWebView is really versatile and needs very few settings to be used. The only defect is the presence of a mysterious shadow that appears when you make a scroll out of the area of ​​control is at the bottom than at the top:

UIWebView Shadow

After several searches I realized that this behavior depends on the SDK, especially the latest updates. And Apple has not released any official statement on how to remove it, on the contrary, he rejected as code is not allowed a series of hacks that make use of sensitive functions, or documenting. Eventually I gave up, both in terms of time, and because the solutions seemed all out of the box Apple.
Fortunately I got the solution, I hope fairly regular basis, which seems to solve the problem (thanks to Adolfo ):

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/ / WebView is the control UIWebView
[ webView.subviews objectAtIndex : 0 ] ; id = scroller [webView.subviews objectAtIndex: 0];

UIView * subView in [ scroller subviews ] ) for (UIView * subView in [scroller subviews])
subView class ] description ] isEqualToString : @ "UIImageView" ] ) if ([[[subView class] description] isEqualToString: @ "UIImageView"])
; subView.hidden = YES;

As pointed out by Adolfo , however this is a hack that may stop working with future releases of the SDK.

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10 Useful tricks and snippets for Apple iPhone and Xcode

1. Strings on multiple lines

In Xcode, you can "break" a string across multiple lines by inserting at the end with a backslash "\". This feature can be useful when, for example, we want to insert the HTML text in a control UIWebView :

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