How to Programmatically check and open an existing app in iOS 8?

Question

I want to check whether an app is present in my iphone or not. If it is present I want to launch it else open the App Store link of the app.

Please suggest the required

Answer 1

You can check whether app is available or not using URL scheme iOS feature and then open iTunes url.Try with following code for your solution:

First set URL scheme "testapp" in your itunes app and then use following code in other app from where you want to open your app :

-(IBAction) openApp:(id)sender {

    // Opens the app if installed, otherwise displays an error
    UIApplication *yourApplication = [UIApplication sharedApplication];
    NSString *URLEncodedText = [self.textBox.text stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
    NSString *ourPath = [@"testapp://" stringByAppendingString:URLEncodedText];
    NSURL *ourURL = [NSURL URLWithString:ourPath];
    if ([yourApplication canOpenURL:ourURL]) {
        [yourApplication openURL:ourURL];
    }
    else {
        //The App is not installed. It must be installed from iTunes code.
        NSString *iTunesLink = @"//Your itunes Url";
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:iTunesLink]];
    }

}