These are our Top 10 reads of July 2015.
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How to reload a ViewController in IOS using Objective-C
To reload a UITableViewController in IOS using Objective-C you can simply use the reloadData method of the ViewController.
//MyTablViewController is a UITableViewController [MyTableViewController.tableView reloadData]
How to hide the status bar while Splashscreen is Shown in IOS
To hide the status bar while Splashscreen is Shown in IOS follow these Steps.
if you do not have the “Status bar is initially hidden” property, simply add it by selecting the last line in the File and then click the plus button on the right end of the line.
To show the status bar you can use this snippet.
[[UIApplication sharedApplication] setStatusBarHidden:NO withAnimation:UIStatusBarAnimationNone]; //UIStatusBarAnimationNone, UIStatusBarAnimationFade or UIStatusBarAnimationSlide
How to use substring in IOS using Objective-C
To use substring in IOS using Objective-C you can use the snippet below.
Sample Objective-C
NSString *myString = @"http://codesnippets.fesslersoft.de"; NSString *myNewString = [myString substringFromIndex:7]; //myNewString will be "codesnippets.fesslersoft.de"
How to autosize UILabel to Textsize in IOS using Objective-C
labelTest.text = @"This is my Teststring.This is my Teststring.This is my Teststring.This is my Teststring.This is my Teststring.This is my Teststring."; labelTest.numberOfLines = 0; [labelTest sizeToFit];
How to clear notifications in IOS using Objective-C
To clear notifications in IOS using objective-c you can use the snippet below.
Sample Objective-C
//in method: application:didFinishLaunchingWithOptions [[UIApplication sharedApplication] setApplicationIconBadgeNumber: 0]; [[UIApplication sharedApplication] cancelAllLocalNotifications]; //in method: application:didReceiveRemoteNotification [[UIApplication sharedApplication] setApplicationIconBadgeNumber: 1]; //we need to to increment first [[UIApplication sharedApplication] setApplicationIconBadgeNumber: 0]; [[UIApplication sharedApplication] cancelAllLocalNotifications];
How to format a float to 2 decimal places in Objective-C
To format a float to 2 decimal places in Objective-C you can use the following snippet.
Sample Objective-C
NSString* formattedVariable = [NSString stringWithFormat:@"%.02f", myFloatVariable];
How to convert string to int using Objective-C
To convert string to int using Objective-C you can use the snippet below.
Sample Objective-C
[myString intValue];
or you can do it like this.
myString.intValue;
How to generate random numbers in C
To generate a random number in C you can use the snippet below.
Sample C
#include <time.h> #include <stdlib.h> srand(time(NULL)); int r = rand();
How to Set / Clear and Toggle a single bit in C/C++
To Set / Clear and Toggle a single bit in C++ see the methods below.
Setting a bit
Use the bitwise OR operator (|) to set a bit.
number |= 1 << x;
Clearing a bit
Use the bitwise AND operator (&) to clear a bit.
number &= ~(1 << x);
Toggling a bit
The XOR operator (^) can be used to toggle a bit.
number ^= 1 << x;