使用特定的外部应用程序从我的iOS应用程序打开pdf文件

Question

I am developing an iPad application which is capable of downloading different types of files from web. I want to give user's, option to open downloaded files (those my application cant handle) to other applications installed in the device.

I know this can be done by using UIDocumentInteractionController , but i want to skip the show options in this method.

For example: After downloading a pdf file from web, on tapping a button "Open", it should automatically open to adobe reader application in the device.

CustomURL is a useful method to launch a specific application, but it may be difficult to get URL schemes of some applications.

Please share your thoughts.

Thanks in advance.

Answer 1

You need to do a method and call either from web option or local (do you want this?)option.

From web directly:

UIWebView *theWebView = [[UIWebView alloc] initWithFrame:CGRectMake(10, 10, 200, 200)];

NSURL *targetURL = [NSURL URLWithString:@"http://yoursiteweb/directory/file.pdf"];
NSURLRequest *request = [NSURLRequest requestWithURL:targetURL];
[theWebView loadRequest:request];

[self.view addSubview:theWebView];

From your bundle after you I downladed the file:

UIWebView *theWebView = [[UIWebView alloc] initWithFrame:CGRectMake(10, 10, 200, 200)];

NSString *path = [[NSBundle mainBundle] pathForResource:@"file" ofType:@"pdf"];
NSURL *targetURL = [NSURL fileURLWithPath:path];
NSURLRequest *request = [NSURLRequest requestWithURL:targetURL];
[theWebView loadRequest:request];

[self.view addSubview:theWebView];

Answer 2

For example: After downloading a pdf file from web, on tapping a button "Open", it should automatically open to adobe reader application in the device.

You want to open another app. If you don't know its URL schema, how could you open it? Through URL schema is the only way we can use to launch another app in one app. Apple does not provide a way to get the list of app that can open the file. So you need to know the exact URL schema for every app you want to open. Indeed a little frustrating.