mirror of
https://github.com/zhigang1992/RestKit.git
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670234b775
Other changes include: * Eliminated the RKObjectFactory protocol and implementations. Object mapping instances themselves are now responsible for instantiating target objects for mapping. * Introduced RKObjectAbstractMapping superclass for RKObjectMapping and RKObjectPolymorphicMapping. * Updated example applications to use block object loaders (RKTwitter and RKTwitterCoreData) * Refactored method signatures of RKObjectMapper, RKObjectMapping, and RKObjectMappingProvider to reflect the existence of abstract mapping types. This was necessary to make polymorphic mappings integrate cleanly. * Fixed overlap in RestKit error domains between network and object mapping. fixes #208
109 lines
3.9 KiB
Objective-C
109 lines
3.9 KiB
Objective-C
//
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// RKTwitterViewController.m
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// RKTwitter
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//
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// Created by Blake Watters on 9/5/10.
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// Copyright Two Toasters 2010. All rights reserved.
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//
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#import "RKTwitterViewController.h"
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#import "RKTStatus.h"
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@interface RKTwitterViewController (Private)
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- (void)loadData;
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@end
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@implementation RKTwitterViewController
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- (void)loadTimeline {
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// Load the object model via RestKit
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RKObjectManager* objectManager = [RKObjectManager sharedManager];
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objectManager.client.baseURL = @"http://www.twitter.com";
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[objectManager loadObjectsAtResourcePath:@"/status/user_timeline/RestKit" delegate:self block:^(RKObjectLoader* loader) {
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// Twitter returns statuses as a naked array in JSON, so we instruct the loader
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// to user the appropriate object mapping
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if ([objectManager.acceptMIMEType isEqualToString:RKMIMETypeJSON]) {
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loader.objectMapping = [objectManager.mappingProvider objectMappingForClass:[RKTStatus class]];
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}
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}];
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}
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- (void)loadView {
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[super loadView];
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// Setup View and Table View
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self.title = @"RestKit Tweets";
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[UIApplication sharedApplication].statusBarStyle = UIStatusBarStyleBlackTranslucent;
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self.navigationController.navigationBar.tintColor = [UIColor blackColor];
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self.navigationItem.rightBarButtonItem = [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh target:self action:@selector(loadTimeline)] autorelease];
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UIImageView* imageView = [[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"BG.png"]] autorelease];
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imageView.frame = CGRectOffset(imageView.frame, 0, -64);
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[self.view insertSubview:imageView atIndex:0];
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_tableView = [[UITableView alloc] initWithFrame:CGRectMake(0, 0, 320, 480-64) style:UITableViewStylePlain];
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_tableView.dataSource = self;
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_tableView.delegate = self;
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_tableView.backgroundColor = [UIColor clearColor];
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_tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
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[self.view addSubview:_tableView];
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[self loadTimeline];
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}
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- (void)dealloc {
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[_tableView release];
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[_statuses release];
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[super dealloc];
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}
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#pragma mark RKObjectLoaderDelegate methods
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- (void)request:(RKRequest*)request didLoadResponse:(RKResponse*)response {
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NSLog(@"Loaded payload: %@", [response bodyAsString]);
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}
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- (void)objectLoader:(RKObjectLoader*)objectLoader didLoadObjects:(NSArray*)objects {
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NSLog(@"Loaded statuses: %@", objects);
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[_statuses release];
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_statuses = [objects retain];
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[_tableView reloadData];
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}
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- (void)objectLoader:(RKObjectLoader*)objectLoader didFailWithError:(NSError*)error {
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UIAlertView* alert = [[[UIAlertView alloc] initWithTitle:@"Error" message:[error localizedDescription] delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil] autorelease];
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[alert show];
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NSLog(@"Hit error: %@", error);
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}
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#pragma mark UITableViewDelegate methods
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- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
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CGSize size = [[[_statuses objectAtIndex:indexPath.row] text] sizeWithFont:[UIFont systemFontOfSize:14] constrainedToSize:CGSizeMake(300, 9000)];
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return size.height + 10;
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}
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#pragma mark UITableViewDataSource methods
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- (NSInteger)tableView:(UITableView *)table numberOfRowsInSection:(NSInteger)section {
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return [_statuses count];
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}
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- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
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NSString* reuseIdentifier = @"Tweet Cell";
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UITableViewCell* cell = [tableView dequeueReusableCellWithIdentifier:reuseIdentifier];
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if (nil == cell) {
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cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:reuseIdentifier] autorelease];
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cell.textLabel.font = [UIFont systemFontOfSize:14];
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cell.textLabel.numberOfLines = 0;
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cell.textLabel.backgroundColor = [UIColor clearColor];
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cell.contentView.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"listbg.png"]];
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}
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cell.textLabel.text = [[_statuses objectAtIndex:indexPath.row] text];
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return cell;
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}
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@end
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