iOS extension to Host app data share.

Most of the developer struggle data send the extension to Host app, We try to figure out this issue.

Steps:

1. Create  new project ->Xcode->File->New->Project->Single View Application
2. Extension Target add -> File->New->Target->iMessage Extension (also you choose your one)

Host App

1. Info.plist add URL scheme
       <key>CFBundleURLTypes</key>
    <array>
        <dict>
            <key>CFBundleURLName</key>
            <string>url.Identifier</string>
            <key>CFBundleURLSchemes</key>
            <array>
                <string>com.avigitsaha.halloweenwallpaperhd.Schemes</string>
            </array>
        </dict>
    </array>

2. AppDelegate.m

 - (BOOL)application:(UIApplication *)app
            openURL:(NSURL *)url
            options:(NSDictionary<UIApplicationOpenURLOptionsKey,id> *)options{
   
    NSLog(@"options %@",options);
    NSLog(@"URL scheme:%@", [url scheme]);
    NSLog(@"URL query:1234 %@", [url query]);
   
    NSURLComponents *urlComponents;
    NSArray* queryItems;
   
    // init
    urlComponents = [NSURLComponents componentsWithURL:url resolvingAgainstBaseURL:NO];
    queryItems = [urlComponents queryItems];
   
    for (NSURLQueryItem* item in queryItems)
    {
        if ([[item name] isEqualToString:@"imageId"]){
            NSLog(@"image Id %@",[item value]);
        }
       
        if ([[item name] isEqualToString:@"categoryId"]){
            NSLog(@"Category Id %@",[item value]);
        }
       
    }
    return NO;
}

Extension App

1. UIButton added for host app code here

- (IBAction)openHostAppWithData:(UIButton *)sender {
    NSString *customURL = [NSString stringWithFormat:@"com.avigitsaha.halloweenwallpaperhd.Schemes://"];
   
    NSURLComponents* urlComponents;
    urlComponents = [NSURLComponents componentsWithURL:[NSURL URLWithString:customURL] resolvingAgainstBaseURL:NO];
   
    [urlComponents setQueryItems:@[[NSURLQueryItem queryItemWithName:@"imageId" value:@"1"],[NSURLQueryItem queryItemWithName:@"categoryId" value:@"2"]
                                   ]];
    [self.extensionContext openURL:[urlComponents URL] completionHandler:^(BOOL success){
        NSLog(@"success %d",success);
    }];
}

Here attached Demo project