我是 iOS 新手,当我在 UIWebView 上滚动 PDF 文件时它挂起。我正在使用这样的代码
String = [String stringByReplacingOccurrencesOfString:@" " withString:@"%20"];
NSString *urlAddress = String;
NSURL *url = [[NSURL alloc] initWithString:urlAddress];
NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
NSLog(@"Downloading Started");
NSString *urlToDownload = String;
NSURL *url = [NSURL URLWithString:urlToDownload];
NSData *urlData = [NSData dataWithContentsOfURL:url];
if ( urlData )
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *Title=TranningTitle;
Title = [Title stringByReplacingOccurrencesOfString:@" " withString:@"%20"];
NSString *format=@".pdf";
NSString *finalString=[NSString stringWithFormat:@"%@%@",Title,format];
NSString *filePath = [NSString stringWithFormat:@"%@/%@", documentsDirectory,finalString];
NSLog(@"File Path =%@",filePath);
//saving is done on main thread
dispatch_async(dispatch_get_main_queue(), ^{
[urlData writeToFile:filePath atomically:YES];
NSLog(@"File Saved !");
[Showwebview loadRequest:requestObj];
});
}
});
它主要卡在 iPad 上。
最佳答案
尝试使用 Quicklook 框架。 Click here for sample code
关于ios - 在 Objective-C 的 UIWebView 上滚动时 PDF 文件挂起,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/47173646/