Convert between UIImage to Base64 string in swift

Convert between UIImage to Base64 string

Swift 4 example

Encoding

func ConvertImageToBase64String (img: UIImage) -> String {
    let imageData:NSData = UIImageJPEGRepresentation(img, 0.50)! as NSData //UIImagePNGRepresentation(img)
    let imgString = imageData.base64EncodedString(options: .init(rawValue: 0))
    return imgString
}

Decoding

func ConvertBase64StringToImage (imageBase64String:String) -> UIImage {
    let imageData = Data.init(base64Encoded: imageBase64String, options: .init(rawValue: 0))
    let image = UIImage(data: imageData!)
    return image
}

Note: Tested in xcode 9.4.1

for more detail please check here : 

https://stackoverflow.com/questions/11251340/convert-between-uiimage-and-base64-string/51394491#51394491

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