Get IP Address iOS (Swift 4 & Objective-C)

Swift 4

 func getIPAddress() -> String? {  
     var address: String?  
     var ifaddr: UnsafeMutablePointer<ifaddrs>? = nil  
     if getifaddrs(&ifaddr) == 0 {  
       var ptr = ifaddr  
       while ptr != nil {  
         defer { ptr = ptr?.pointee.ifa_next }  
         let interface = ptr?.pointee  
         let addrFamily = interface?.ifa_addr.pointee.sa_family  
         if addrFamily == UInt8(AF_INET) || addrFamily == UInt8(AF_INET6) {  
           if let name: String = String(cString: (interface?.ifa_name)!), name == "en0" {  
             var hostname = [CChar](repeating: 0, count: Int(NI_MAXHOST))  
             getnameinfo(interface?.ifa_addr, socklen_t((interface?.ifa_addr.pointee.sa_len)!), &hostname, socklen_t(hostname.count), nil, socklen_t(0), NI_NUMERICHOST)  
             address = String(cString: hostname)  
           }  
         }  
       }  
       freeifaddrs(ifaddr)  
     }  
     return address  
   }  

Objective-C

+(NSString *)getIPAddress {  
   NSString *address = @"error";  
   struct ifaddrs *interfaces = NULL;  
   struct ifaddrs *temp_addr = NULL;  
   int success = 0;  
   // retrieve the current interfaces - returns 0 on success  
   success = getifaddrs(&interfaces);  
   if (success == 0) {  
     // Loop through linked list of interfaces  
     temp_addr = interfaces;  
     while(temp_addr != NULL) {  
       if(temp_addr->ifa_addr->sa_family == AF_INET) {  
         // Check if interface is en0 which is the wifi connection on the iPhone  
         if([[NSString stringWithUTF8String:temp_addr->ifa_name] isEqualToString:@"en0"])  
         {  
           // Get NSString from C String  
           address = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)temp_addr->ifa_addr)->sin_addr)];  
         }  
       }  
       temp_addr = temp_addr->ifa_next;  
     }  
   }  
   // Free memory  
   freeifaddrs(interfaces);  
   return address;  
 }  

Get all font name in ios

How to check if a font is available in version of iOS?

- (void) getAllFontName {

    NSArray *familyNames = [[NSArray alloc] initWithArray:[UIFont familyNames]];

    

    NSArray *fontNames;

    NSInteger indFamily, indFont;

    for (indFamily=0; indFamily<[familyNames count]; ++indFamily)

    {

        NSLog(@"Family name: %@", [familyNames objectAtIndex:indFamily]);

        fontNames = [[NSArray alloc] initWithArray:

                     [UIFont fontNamesForFamilyName:

                      [familyNames objectAtIndex:indFamily]]];

        for (indFont=0; indFont<[fontNames count]; ++indFont)

        {

            NSLog(@"Font name: %@", [fontNames objectAtIndex:indFont]);

        }

    }

}

NTFS for mac

How to write NTFS Drives on mac

Just download "Mounty for NTFS" and install it.

http://enjoygineering.com/mounty/

If you like please comment.

Failed to obtain a cell from its DataSource

Solutions for "Failed to obtain a cell from its DataSource" error

Swift 3.0

You just need to add UITableViewDelegate and UITableViewDataSource

import UIKit class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource

stackoverflow link :
http://stackoverflow.com/questions/34250595/failed-to-obtain-a-cell-from-its-datasource/41566649#41566649

Push Notifications for iOS 10 code in objective-c

Step by step guide to implement push notification in iOS10


Step 1 : Import UserNotifications.framework in your AppDelegate.h file

#import <UserNotifications/UserNotifications.h>

Setp 2 : Add "UNUserNotificationCenterDelegate"

@interface AppDelegate : UIResponder <UIApplicationDelegate,UNUserNotificationCenterDelegate>

@end

Step 3 :  Register for push notification in AppDelegate.m file

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

// Override point for customization after application launch.

UNUserNotificationCenter *notificationCenter = [UNUserNotificationCenter currentNotificationCenter]; notificationCenter.delegate = self; [notificationCenter requestAuthorizationWithOptions:(UNAuthorizationOptionSound | UNAuthorizationOptionAlert | UNAuthorizationOptionBadge) completionHandler:^(BOOL granted, NSError * _Nullable error){ if( !error ){ [[UIApplication sharedApplication] registerForRemoteNotifications]; } }];

return YES;

}

Step 4 :  Now time to implement Notification Delegate methods in AppDelegate.m file.-

-(void)userNotificationCenter:(UNUserNotificationCenter *)center willPresentNotification:(UNNotification *)notification withCompletionHandler:(void (^)(UNNotificationPresentationOptions options))completionHandler{
NSLog(@"User Info = %@",notification.request.content.userInfo);
completionHandler(UNNotificationPresentationOptionAlert | UNNotificationPresentationOptionBadge | UNNotificationPresentationOptionSound);
}

- (void)userNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(UNNotificationResponse *)response withCompletionHandler:(void(^)())completionHandler{

NSLog(@"User Info = %@",response.notification.request.content.userInfo);
completionHandler();
}

iOS 10 info.plist changes required

iOS 10 info.plist changes required.

Goto Info.Plist file. 

Camera :

Key      :  Privacy - Camera Usage Description   

Value    :  $(PRODUCT_NAME) camera use

Microphone :

Key      :  Privacy - Microphone Usage Description    

Value    :  $(PRODUCT_NAME) microphone use 

 

Photo :

Key      :  Privacy - Photo Library Usage Description    

Value    :  $(PRODUCT_NAME) photo use

 

Contact :

Key      :   Privacy - Contacts Usage Description     

Value    :  $(PRODUCT_NAME) contact use

 

Location :

Key      :  Privacy - Location Always Usage Description   

Value    :  $(PRODUCT_NAME) location use

---------- or ----------

Key      :  Privacy - Location When In Use Usage Description   

Value    :  $(PRODUCT_NAME) location use

 

Media Library :

Key      :  Privacy - Media Library Usage Description   

Value    :  $(PRODUCT_NAME) media library use

 

Calendar :

Key      :  Privacy - Calendars Usage Description    

Value    :  $(PRODUCT_NAME) calendar events

 

Bluetooth Sharing :

Key      :  Privacy - Bluetooth Peripheral Usage Description     

Value    :  $(PRODUCT_NAME) Bluetooth Peripheral use

 

Reminder :

Key      :   Privacy - Reminders Usage Description    

Value    :   $(PRODUCT_NAME) reminder use

 

Heath :

Key      :  Privacy - Health Share Usage Description   

Value    :  $(PRODUCT_NAME) heath share use

---------- or ----------

Key      :  Privacy - Health Update Usage Description   

Value    :  $(PRODUCT_NAME) heath update use

 

Motion :

Key      :  Privacy - Motion Usage Description   

Value    :  $(PRODUCT_NAME) motion use

 

SiriKit  :

Key      :  Privacy - Siri Usage Description  

Value    :  $(PRODUCT_NAME) siri use

 

Speech Recognition :

Key      :  Privacy - Speech Recognition Usage Description   

Value    :  $(PRODUCT_NAME) speech use

 

HomeKit :

Key      :  Privacy - HomeKit Usage Description   

Value    :  $(PRODUCT_NAME) home kit use

  

TV Provider :

Key      :  Privacy - TV Provider Usage Description   

Value    :  $(PRODUCT_NAME) tvProvider use

QRCodeReader in Objective-c

QRCodeReader framework help to Decode QRcode.

QRCodeReader Framework for ios developer, Very eazy implementation with delegate.

CocoaControls Link : https://www.cocoacontrols.com/controls/qrcodereader

How to use

1. Embeded Binaries

2. Drag and drop UIView in your view controller.

3. Change Class of UIVIew.

4. Bind your UIView.

Paste "M1, M2" methods in your view controller (i.e. "ViewController.m")

"M1" viewDidLoad

- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
self.title = @"QR Code Reader";
[qrCodeView setDelegate:self];
[qrCodeView startReading];
}

And here the delegate methods:

"M2" QRCodeReaderDelegate

#pragma mark - QRCodeReaderDelegate
- (void)getQRCodeData:(id)qRCodeData {
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"QR Code" message:qRCodeData preferredStyle:UIAlertControllerStyleAlert];

UIAlertAction *cancel = [UIAlertAction actionWithTitle:@"Close" style:UIAlertActionStyleDefault handler:nil];
[alertController addAction:cancel];

UIAlertAction *reScan = [UIAlertAction actionWithTitle:@"Rescan" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
[qrCodeView startReading];
}];
[alertController addAction:reScan];
[self presentViewController:alertController animated:YES completion:nil];
}