关于 UIWebView 的说明

本文转载至 http://blog.csdn.net/cyforce/article/details/8487856

1、UIWebDocumentView

2、WebView

3、

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私有框架所在目录？

/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk/System/Library/PrivateFrameworks

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UIWebView 的层次

①、UIScrollView is a subview of UIWebView

②、UIWebDocumentView is a subview of UIScrollView

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如何获取 UIWebDocumentView 与 WebView ？

UIWebView *officialWebView = [[UIWebView alloc] init];

UIWebDocumentView *webDocumentView = nil;

id webView = nil;

webDocumentView = objc_msgSend(officialWebView, @selector(_documentView));

object_getInstanceVariable(webDocumentView, "_webView", (void**)&webView);

具体有支持哪些消息可以从网络上查找，有dump出的头文件供下载。

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如何截获 Touch 事件？

@implementation UIView (__TapHook)

- (void)__replacedTouchesBegan:(NSSet*)touches withEvent:(UIEvent*)event {

[self __replacedTouchesBegan:touches withEvent:event];

if( [self.superview.superview isMemberOfClass:[UICWebView class]] ) {

[(UICWebView*)self.superview.superview hookedTouchesBegan:touches withEvent:event];

}

}

@end

+ (void)installHook {

Class klass = objc_getClass( "UIWebDocumentView" );

// replace touch began event

method_exchangeImplementations(

class_getInstanceMethod(klass, @selector(touchesBegan:withEvent:)),

class_getInstanceMethod(klass, @selector(__replacedTouchesBegan:withEvent:)) );

}

ref：http://sonson-code.googlecode.com/svn/trunk/iPhone2.0/UICWebView/

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如何获取网页的真实加载速度？

①、注册通知：

[[NSNotificationCenter defaultCenter] addObserver:self

selector:@selector(progressEstimateChanged:)

name:WebViewProgressEstimateChangedNotification

object:coreWebView];

②、处理通知消息：

- (void)progressEstimateChanged:(NSNotification*)theNotification {

// You can get the progress as a float with

// [[theNotification object] estimatedProgress], and then you

// can set that to a UIProgressView if you'd like.

// theProgressView is just an example of what you could do.

[theProgressView setProgress:[[theNotification object] estimatedProgress]];

if ((int)[[theNotification object] estimatedProgress] == 1) {

theProgressView.hidden = TRUE;

// Hide the progress view. This is optional, but depending on where

// you put it, this may be a good idea.

// If you wanted to do this, you'd

// have to set theProgressView to visible in your

// webViewDidStartLoad delegate method,

// see Apple's UIWebView documentation.

}

}

ref：http://winxblog.com/2009/02/iphone-uiwebview-estimated-progress/

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调试 UIWebView

ref：http://www.idryman.org/blog/2012/06/17/debug-uiwebview-in-your-ios-app/

ref：http://atnan.com/blog/2011/11/17/enabling-remote-debugging-via-private-apis-in-mobile-safari/

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开启并使用 WebGL

ref：http://atnan.com/blog/2011/11/03/enabling-and-using-webgl-on-ios/

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