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//
// MultithreadingViewController.m
// iOSFundamentalConcepts_iPad
//
// Created by Oliver Solano on 8/4/12.
// Copyright (c) 2012 __MyCompanyName__. All rights reserved.
//
#import "MultithreadingViewController.h"
#import <dispatch/dispatch.h>
@interface MultithreadingViewController ()
@end
@implementation MultithreadingViewController
@synthesize imageViewNormal, imageViewDispatch, imageViewDispatch2, imageViewDispatch3;
@synthesize toolbar;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// self.imageViewNormal = [[UIImageView alloc] init];
// self.imageViewDispatch = [[UIImageView alloc] init];
// Do any additional setup after loading the view from its nib.
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return YES;
}
-(IBAction)selectNormalButton:(id)sender{
NSURL *networkURL = [NSURL URLWithString:@"http://oliversolano.com/sample_projects/weddingalbum/files/Image_4_H.png"];
NSData *imageData = [NSData dataWithContentsOfURL:networkURL]; // long time!
UIImage *image = [UIImage imageWithData:imageData];
self.imageViewNormal.image = image;
}
-(IBAction)selectDispatchButtonThread11:(id)sender{
NSURL *networkURL = [NSURL URLWithString:@"http://oliversolano.com/sample_projects/weddingalbum/files/Image_4_H.png"];
dispatch_queue_t downloadQueue = dispatch_queue_create("image loader", NULL);
dispatch_async(downloadQueue, ^{
NSData *imageData = [NSData dataWithContentsOfURL:networkURL]; // long time!
dispatch_async(dispatch_get_main_queue(), ^ {
UIImage *image = [UIImage imageWithData:imageData];
self.imageViewDispatch.image = image;
});
});
dispatch_release(downloadQueue);
}
-(IBAction)selectDispatchButtonThread1:(id)sender{
NSURL *networkURL = [NSURL URLWithString:@"http://oliversolano.com/sample_projects/weddingalbum/files/Image_10_P.png"];
//Although this is on the same labeled queue, it is still creates a new thread to download the data. This is no different than adding a thread on a different labeled queue.
dispatch_queue_t downloadQueue = dispatch_queue_create("image loader", NULL);
dispatch_async(downloadQueue, ^{
NSData *imageData1 = [NSData dataWithContentsOfURL:networkURL]; // long time!
dispatch_async(dispatch_get_main_queue(), ^ {
UIImage *image1 = [UIImage imageWithData:imageData1];
self.imageViewDispatch3.image = image1;
});
});
dispatch_release(downloadQueue);
}
-(IBAction)selectDispatchButtonThread2:(id)sender{
NSURL *networkURL = [NSURL URLWithString:@"http://oliversolano.com/sample_projects/weddingalbum/files/Image_4_H.png"];
dispatch_queue_t downloadQueue2 = dispatch_queue_create("image loader2", NULL);
dispatch_async(downloadQueue2, ^{
NSData *imageData = [NSData dataWithContentsOfURL:networkURL]; // long time!
dispatch_async(dispatch_get_main_queue(), ^ {
UIImage *image = [UIImage imageWithData:imageData];
self.imageViewDispatch2.image = image;
});
});
dispatch_release(downloadQueue2);
}
-(IBAction)selectDispatchButtonRunAllOnThread1:(id)sender{
NSURL *networkURL = [NSURL URLWithString:@"http://oliversolano.com/sample_projects/weddingalbum/files/Image_4_H.png"];
dispatch_queue_t downloadQueueAll = dispatch_queue_create("image load all", NULL);
dispatch_async(downloadQueueAll, ^{
NSData *imageData = [NSData dataWithContentsOfURL:networkURL]; // long time!
NSData *imageData2 = [NSData dataWithContentsOfURL:networkURL]; // long time!
NSData *imageData3 = [NSData dataWithContentsOfURL:networkURL]; // long time!
dispatch_async(dispatch_get_main_queue(), ^{
UIImage *image = [UIImage imageWithData:imageData];
self.imageViewDispatch.image = image;
UIImage *image2 = [UIImage imageWithData:imageData2];
self.imageViewDispatch2.image = image2;
UIImage *image3 = [UIImage imageWithData:imageData3];
self.imageViewDispatch3.image = image3;
});
});
dispatch_release(downloadQueueAll);
}
-(IBAction)reset:(id)sender{
self.imageViewDispatch.image = nil;
self.imageViewNormal.image = nil;
self.imageViewDispatch2.image = nil;
self.imageViewDispatch3.image = nil;
// [self.imageViewNormal removeFromSuperview];
// [self.imageViewDispatch removeFromSuperview];
}
#pragma mark -
#pragma mark Managing the popover
- (void)showRootPopoverButtonItem:(UIBarButtonItem *)barButtonItem {
// Add the popover button to the toolbar.
NSMutableArray *itemsArray = [toolbar.items mutableCopy];
[itemsArray insertObject:barButtonItem atIndex:0];
[toolbar setItems:itemsArray animated:NO];
}
- (void)invalidateRootPopoverButtonItem:(UIBarButtonItem *)barButtonItem {
// Remove the popover button from the toolbar.
NSMutableArray *itemsArray = [toolbar.items mutableCopy];
[itemsArray removeObject:barButtonItem];
[toolbar setItems:itemsArray animated:NO];
}
///Add methods that use NSOperations
@end