Iphone iOS下载并保存HTML文件
我正在尝试下载网页(html),然后在UIWebView中显示已下载的本地html 这就是我尝试过的-Iphone iOS下载并保存HTML文件,iphone,xcode,ios,ios4,uiwebview,Iphone,Xcode,Ios,Ios4,Uiwebview,我正在尝试下载网页(html),然后在UIWebView中显示已下载的本地html 这就是我尝试过的- NSString *stringURL = @"url to file"; NSURL *url = [NSURL URLWithString:stringURL]; NSData *urlData = [NSData dataWithContentsOfURL:url]; if ( urlData ) { NSArray *paths = NSSearchPathFor
NSString *stringURL = @"url to file";
NSURL *url = [NSURL URLWithString:stringURL];
NSData *urlData = [NSData dataWithContentsOfURL:url];
if ( urlData )
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [NSString stringWithFormat:@"%@/%@", documentsDirectory,@"index.html"];
[urlData writeToFile:filePath atomically:YES];
}
//Load the request in the UIWebView.
[web loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"index" ofType:@"html"]isDirectory:NO]]]; // Do any additional setup after loading the view from its nib.
但这是一个“SIGABRT”错误
不太确定我做错了什么
任何帮助都将不胜感激。谢谢 您的应用程序是一个文件夹,末尾有.app扩展名。在iPhone上,一旦安装,您就无法更改此文件夹,因此,为什么要将其保存到documents目录中 在示例代码中,您将文件保存到Documents/index.html,并要求它加载appname.app/index.html [NSBundle mainBundle]没有给你它给你(我想)的.app文件夹的文档目录(尽管它可能是包含应用、文档和其他文件夹的文件夹) 为了给你一个机会,你需要改变这一行
[web loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"index" ofType:@"html"]isDirectory:NO]]];
To(如果此方法与代码的其余部分相同,则重新创建对象“filePath”)
传递到UIWebView的路径不正确,如前面提到的Freerunnering,请尝试以下方法:
// Determile cache file path
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *filePath = [NSString stringWithFormat:@"%@/%@", [paths objectAtIndex:0],@"index.html"];
// Download and write to file
NSURL *url = [NSURL URLWithString:@"http://www.google.nl"];
NSData *urlData = [NSData dataWithContentsOfURL:url];
[urlData writeToFile:filePath atomically:YES];
// Load file in UIWebView
[web loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:filePath]]];
注意:需要添加正确的错误处理。NSDocumentDirectory将备份到iCloud。您最好使用NSCachesDirectory,以下是Swift 2.x版本:
var paths: [AnyObject] = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)
var filePath: String = "\(paths[0])/\("index.html")"
// Download and write to file
var url: NSURL = NSURL(string: "http://www.google.nl")!
var urlData: NSData = NSData.dataWithContentsOfURL(url)
urlData.writeToFile(filePath, atomically: true)
// Load file in UIWebView
web.loadRequest(NSURLRequest(URL: NSURL.fileURLWithPath(filePath)))
查看调试器输出。可能有一条消息。在您的情况下,不可能下载包含的资源,如Images。最好是一条评论。
var paths: [AnyObject] = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)
var filePath: String = "\(paths[0])/\("index.html")"
// Download and write to file
var url: NSURL = NSURL(string: "http://www.google.nl")!
var urlData: NSData = NSData.dataWithContentsOfURL(url)
urlData.writeToFile(filePath, atomically: true)
// Load file in UIWebView
web.loadRequest(NSURLRequest(URL: NSURL.fileURLWithPath(filePath)))