bouchtaoui-dev

NSThread *thread = [[NSThread alloc] initWithTarget:self
                                     selector:@selector(run:)
                                       object:nil];
[thread start];
//...
//...
- (void) run: (id) object{
    NSLog(@"I'm running in another thread :D");
}

bouchtaoui-dev

dispatch_queue_t myQueue = dispatch_queue_create("my queue",NULL);
//...
//...
//...
dispatch_async(imageQueue, ^{
        // This will run the method in a separate thread
        [self doSomeLongRunningTask];
    });

bouchtaoui-dev

- (void) startTimer {
    NSTimer *timer = [[ NSTimer alloc ] initWithFireDate: [NSDate dateWithTimeIntervalSinceNow: 0.0
                                                 interval: 0.1
                                                   target: self
                                                 selector: @selector(fireMe)
                                                 userInfo: nil
                                                  repeats: NO];
}

bouchtaoui-dev

- (void) startTimer {
    NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval: 0.1 target:self selector:@selector(fireMe) userInfo:nil repeats:YES];
}

- (void) fireMe {
    NSLog(@"I'm fired!");
}

// By setting the repeats on YES, makes the timer execute every 0.1 sec which is 100 ms.
// By setting it to NO, will execute the timer just once.

bouchtaoui-dev

- (IBAction)btnExit:(id)sender {
    UIAlertView *messageBox = [[UIAlertView alloc] initWithTitle:@"Exit"
                                                      message:@"Are you sure?"
                                                     delegate:self
                                            cancelButtonTitle:@"No"
                                            otherButtonTitles:@"Yes", nil];
    [messageBox show];
}

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex

bouchtaoui-dev

//sample of a bluetooth RfComm COmmunication between a GPS and OSX.
//more information on: http://pestohacks.blogspot.it/2012/07/make-osx-talks-with-bluetooth-gps.html

//let's go on.
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
    NSLog(@"ok, go on"); //
    btDevice = nil;
    IOBluetoothDeviceInquiry *ibdi = [IOBluetoothDeviceInquiry inquiryWithDelegate:self]; //inquiry, have delegates methoeds
    [ibdi setUpdateNewDeviceNames:YES]; //Yes, I want also names for the bt devices found.

bouchtaoui-dev

NSString* string = @"Hello World"; 

UIFont *font = [UIFont fontWithName:@"Helvetica-BoldOblique" size:21];

CGSize constraint = CGSizeMake(300,NSUIntegerMax);

NSDictionary *attributes = @{NSFontAttributeName: font};

CGRect rect = [string boundingRectWithSize:constraint 
                                   options:(NSStringDrawingUsesLineFragmentOrigin|NSStringDrawingUsesFontLeading)  

bouchtaoui-dev

NSString *str = <#some string#>;
CGSize size;
CGSize maxSize = CGSizeMake(<#width#>, <#height#>);
UIFont *font = <#font#>;
if ([str respondsToSelector:@selector(boundingRectWithSize:options:attributes:context:)]) {
    NSMutableParagraphStyle *style = [[NSMutableParagraphStyle alloc] init];
    [style setLineBreakMode:<#Line break mode#>];
    [style setAlignment:<#String alignment#>];
    NSDictionary *attributes = @{ NSFontAttributeName:font,
                                  NSParagraphStyleAttributeName:style

bouchtaoui-dev

Intro

Recently, I had to implement an offline mapping solution for an iOS application. Here's a walkthrough of how to do it.

Summary

I generated a tile database using TileMill. I used the Route-Me iOS library which provides a map view that supports offline tile sources.

TileMill

bouchtaoui-dev

<?xml version="1.0" encoding="utf-8"?>

<set xmlns:android="http://schemas.android.com/apk/res/android">
    <rotate
        android:duration="70"
        android:fromDegrees="-5"
        android:pivotX="50%"
        android:pivotY="50%"
        android:repeatCount="5"
        android:repeatMode="reverse"