Random number in Objective C iPhone

To get a random number in iPhone Objective-C,


srandom(CFAbsoluteTimeGetCurrent());
int offset = random() % 30; // Here 30 can be replaced by any integer

Now offset is the random number.

Comments

Post a Comment

Popular posts from this blog

Integrating ZXing QR Code reader in iPhone / iOS applications

I spent a lot of time in integrating the QR code reader in iOS applications. I like to share you the steps and let you know the basic bugs that may happen during the integration process and how to debug that too :) Step 1  Download the latest code for QR code reader, zxing framework from github here . Step 2  Drag and drop the ZXingWidget.xcodeproj file to your project. Step 3  Copy the cpp folder from downloaded files (zxing-2.0) to your project. (The download files (zxing-2.0) depends upon the version that has been downloaded from github.) Step 4  Copy the iphone folder from downloaded files (zxing-2.0) to your project. (The download files (zxing-2.0) depends upon the version that has been downloaded from github.) Step 5 Add the following frameworks to your project.  Click on Project name -> Target -> Build Phases -> Link with libraries AudioToolbox.framework AddressBookUI.framework AddressBook.framework CoreVideo.framewor...
Read more

Multiple line of text in UIPickerView

UIPickerView is a user interface component available from iOS 2.0 and above. The basic need of UIPickerView is to select any one option from the list of data that are loaded to the picker view. But, by default, only one line of text is allowed to be displayed in a UIPickerView . Today, we will try to add multi-line text to an UIPickerView . To do so, we need to implement the viewForComponent api.   - ( UIView  *)pickerView:( UIPickerView  *)pickerView viewForRow:( NSInteger )row forComponent:( NSInteger )component reusingView:( UIView  *)view; In that method, type cast the view parameter to an UILabel.    UILabel *pickerLabel = ( UILabel *)view; Update the frame size of the label.    CGRect frame = CGRectMake ( 0 , 0 , 265 , 40 );    pickerLabel = [[[ UILabel alloc ] initWithFrame :frame] autorelease ]; Set the properties of the label as per requirement.    [pickerLabel setTextAlig...
Read more

Connect Samsung devices to Kies on Mac

Connecting a Samsung device to Kies installed on Mac is very hard. Here are the few steps which worked for me.   I was testing these steps for Samsung Galaxy S2. 1. Quit Kies application in your mac. 2. Disconnect your Mobile Device from USB. 3. Go to your Samsung Device -> Settings -> Applications -> Development -> Turn Off USB Debugging. 4. Now connect the Device to the PC through USB. 5. Wait until Media Scanning is completed. 6. Wait until MTP Connected. 7. Now Launch the Kies application on Mac. You can see your device is now connected. Here you go, now you can update your device to the latest os through Kies.
Read more