URL Scheme

//Legal for AppStore
- (void) dialPhoneNumber:(NSString *)aPhoneNumber
{
    NSURL *phoneURL = [NSURL URLWithString:[NSString
    stringWithFormat:@"tel:%@", aPhoneNumber]];
    [self.phoneCallWebView loadRequest:[NSURLRequest requestWithURL:phoneURL]];
}

//Illegal for AppStore
[[UIApplication sharedApplication]
openURL:[NSURL URLWithString:@"telprompt://10086"]];

//Priority is lower than below method
-(BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url
{
    if ([[url scheme] isEqualToString:@"Al"]) {
        NSLog(@"%@",url);
    }
    return YES;
}

//Priority is higher than above method
-(BOOL)application:(UIApplication *)application
           openURL:(NSURL *)url
 sourceApplication:(NSString *)sourceApplication
        annotation:(id)annotation
{
    if ([sourceApplication isEqualToString:@"com.Geek.Al"]) {
        NSLog(@"%@", sourceApplication);   //From which App（Bundle identifier）
        NSLog(@"scheme:%@", [url scheme]); //url scheme
        NSLog(@"query: %@", [url query]);  //query string  use“?param=ios”format
        return YES;
    } else {
        return NO;
    }
}

[[UIApplication sharedApplication]
openURL:[NSURL URLWithString:@"Al://method?param=ios"]];

<key>LSApplicationQueriesSchemes</key>  
<array>  
    <string>weixin</string>  
</array>