使用UIWebView加载本地数据或资源有如下三种方式:
1,使用loadHTMLString方法加载HTML内容
2,使用loadRequest方法加载本地资源(也可用于加载服务器资源)
3,先将内容保存成NSData数据,再使用loadData方法加载
示例代码如下(通过UISegmentedControl分别控制网页控件“显示HTML”“显示PDF”“loadData显示PDF”):
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import
UIKit
class
ViewController
:
UIViewController
{
@IBOutlet
var
webview:
UIWebView
!
loadtype:
UISegmentedControl
!
override
func
viewDidLoad() {
super
.viewDidLoad()
//默认选中分段控件的第一项
loadtype.selectedSegmentIndex = 0
typeChanged(loadtype)
}
@IBAction
typeChanged(sender:
)
{
let
index = sender.selectedSegmentIndex
print
(index)
switch
index
{
case
0:
//在 UIWebView 中显示 HTML 内容
html =
"<h1>欢迎来到:<a href='http://hangge.com'>航歌</a></h1>"
;
webview.loadHTMLString(html,baseURL:
nil
)
1:
//在 UIWebView 中显示 PDF
path =
NSBundle
.mainBundle().pathForResource(
"test1"
,ofType:
"pdf"
)
urlStr =
NSURL
.fileURLWithPath(path!);
(urlStr)
webview.loadRequest(
NSURLRequest
(
URL
:urlStr));
2:
//在 UIWebView 中显示 PDF,但是是通过 loadData 方式加载
)
.fileURLWithPath(path!);
data =
NSData
(contentsOfURL:urlStr);
webview.loadData(data!,
MIMEType
:
"application/pdf"
ottom:auto!important; float:none!important; height:auto!important; left:auto!important; line-height:1.5em!important; margin:0px!important; overflow:visible!important; padding:1px 0px!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; font-family:Consolas,
textEncodingName:
"utf-8"
ottom:auto!important; float:none!important; height:auto!important; left:auto!important; line-height:1.5em!important; margin:0px!important; overflow:visible!important; padding:1px 0px!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; font-family:Consolas,baseURL:
());
default
:
(
"是不是出错了?"
)
}
}
}
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