using UIWebView with images not included in NSBundle but that have been downloaded
I have downloaded a couple images and I need to view them in and print them from a UIWebView but I cannot seem to get the path correct to get the images to display in the UIWebView.
Anyone done this successfully?
My images are download to a path Documents/MyFolder/MyImage.jp开发者_开发问答g
Simple: just copy the html you want to display to the documents directory and use relative file paths.
I just tested this and it works. First copy your assets into the user document directory. Here just one image as an example. You could copy a whole directory, etc.
NSURL *documentsDirectory = [[[NSFileManager defaultManager] URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask] lastObject];
NSURL *imageURL = [documentsDirectory URLByAppendingPathComponent:@"image.gif"];
if (![[NSFileManager defaultManager] fileExistsAtPath:[imageURL path]]) {
NSString *bundleImage = [[NSBundle mainBundle] pathForResource:@"image" ofType:@"gif"];
if (bundleImage) {
[[NSFileManager defaultManager] copyItemAtPath:bundleImage toPath:[imageURL path] error:nil];
}
}
Also copy your html pages (this just shows how I set up the test):
NSString *htmlString = @"<html>Here is a picture: <br>"
"<img src=\"image.gif\" height=100 width=100> "
"</html>";
NSURL *mainPageURL = [documentsDirectory URLByAppendingPathComponent:@"index.html"];
NSLog(@"%@", mainPageURL);
[htmlString writeToURL:mainPageURL atomically:YES encoding:NSUTF8StringEncoding error:nil];
Finally load the page - works like a charm.
[webView loadRequest:[NSURLRequest requestWithURL:mainPageURL]];
A caveat about running this in the iOS Simulator. The URL is different on a Mac. In short, you have to use the format @"file:/.../"and replace all slashes / with double slashes //, and all spaces with %20. More on this in this question.
加载中,请稍侯......
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