iphone打开文本视图中的超连接显示在网页视图中。opening links in a UITextView in a web view
当设定了文本内容的链接高亮事件监听后，UIApplication将对点击事件做出responser，比如调用safari处理http文本，如果要改变这种响应方法。怎么做？
Method1、
使用类别override UITextView的webView:decidePolicyForNavigationAction:request:frame:decisionListener:方法。
@interface UITextView (CommonOverrid)
@end
@class WebView, WebFrame;
@protocol WebPolicyDecisionListener;
@implementation UITextView (CommonOverrid)
-
(
void
)webView:(WebView
*
)webView decidePolicyForNavigationAction:(NSDictionary
*
)actionInformation request:(NSURLRequest
*
)request frame:(WebFrame
*
)frame decisionListener:(id
<
WebPolicyDecisionListener
>
)listener
{
NSLog(
@"
request: %@
"
, request);
UIWebView
*
v1
=
[[UIWebView alloc] initWithFrame:CGRectMake(
0
, self.superview.frame.size.height
-
200
,
764
,
200
)];
[v1 loadRequest:request];
[((UIView
*
)(self.superview)) addSubview:v1];
}
UITextView增加了类别，重写了方法。但必须注意这是一个private API。如果内部框架调整可能导致实效。
Method2、
重写UIApplication openURL方法
@implementation UIApplication (Private)
-
(BOOL)openURL:(NSURL
*
)url
{
//
current delegate
MyAppDelegate
*
watcher
=
[[UIApplication sharedApplication]
delegate
];
//
current controller,use it to handleURL the action
if
(watcher.currentViewController) {
//
do something here....
[watcher.currentViewController handleURL:url];
return
YES;
}
return
NO;
}
@end
还有个实现不通过重写方法，而是先命名别称然后交换方法实现。swap implementations between separate methods.
Method customOpenUrl
=
class_getInstanceMethod([UIApplication
class
], @selector(customOpenURL:));
Method openUrl
=
class_getInstanceMethod([UIApplication
class
], @selector(openURL:));
method_exchangeImplementations(customOpenUrl, openUrl);
所以总结下来还是推荐使用第二种方法。
详见地址：https://github.com/marksands/UITextViewLinkOptions