我已经按照这个Parse Tutorial创建了一个自定义 UITableViewController。我希望能够在情节提要中编辑 UITableView。我想在本教程的某个地方我会将 ViewController 链接到 TableView，但我也没有。如何在链接到此 ViewController 的 stroyboard 中访问此 TableView 以进行 UI 编辑？
这是 GitHub 上的 ViewController代码。
编辑：这真的与 Parse API 无关。表格视图不在情节提要中 - 这是我要解决的问题。本教程指示我将其添加到 AppDelegate.m：
MyTableViewController *controller = [[MyTableViewController alloc] init];
self.window.rootViewController = controller;
这对 MyTableViewController.m：
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom the table
// The className to query on
self.className = @"Artists";
// The key of the PFObject to display in the label of the default cell style
self.keyToDisplay = @"artistName";
// Whether the built-in pull-to-refresh is enabled
self.pullToRefreshEnabled = YES;
// Whether the built-in pagination is enabled
self.paginationEnabled = YES;
// The number of objects to show per page
self.objectsPerPage = 50;
}
return self;
}
该应用程序运行良好，但我在情节提要中只有一个空白视图。我是否需要创建一个 TableView 并将其链接到 MyTableViewController？我猜我必须从 AppDelegate 中删除 self.window... 代码。
编辑：更新代码：
#import "MyTableViewController.h"
@implementation MyTableViewController
@synthesize tableView = _tableView;
#pragma mark - View lifecycle
- (void)viewDidLoad
{
[super viewDidLoad];
// Custom the table
// The className to query on
self.className = @"Artists";
// The key of the PFObject to display in the label of the default cell style
self.keyToDisplay = @"artistName";
// Whether the built-in pull-to-refresh is enabled
self.pullToRefreshEnabled = YES;
// Whether the built-in pagination is enabled
self.paginationEnabled = YES;
// The number of objects to show per page
self.objectsPerPage = 50;
// Uncomment the following line to preserve selection between presentations.
// self.clearsSelectionOnViewWillAppear = NO;
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
self.navigationItem.rightBarButtonItem = self.editButtonItem;
}
- (void)viewDidUnload
{
[self setTableView:nil];
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
}
- (void)viewDidDisappear:(BOOL)animated
{
[super viewDidDisappear:animated];
}
- (BOOL)shouldAutorotateToInterfaceOrientation: (UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
- (void)didReceiveMemoryWarning
{
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
#pragma mark - Parse
- (void)objectsDidLoad:(NSError *)error {
[super objectsDidLoad:error];
// This method is called every time objects are loaded from Parse via the PFQuery
}
- (void)objectsWillLoad {
[super objectsWillLoad];
// This method is called before a PFQuery is fired to get more objects
}
// Override to customize what kind of query to perform on the class. The default is to query for
// all objects ordered by createdAt descending.
- (PFQuery *)queryForTable {
PFQuery *query = [PFQuery queryWithClassName:self.className];
// If no objects are loaded in memory, we look to the cache first to fill the table
// and then subsequently do a query against the network.
if ([self.objects count] == 0) {
// ** There are other caching options in Parse iOS guide
query.cachePolicy = kPFCachePolicyNetworkElseCache;
}
[query orderByDescending:@"tweetInfluence"];
return query;
}
// Override to customize the look of a cell representing an object. The default is to display
// a UITableViewCellStyleDefault style cell with the label being the first key in the object.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath object:(PFObject *)object {
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
}
// Configure the cell
cell.textLabel.text = [object objectForKey:@"artistName"];
cell.detailTextLabel.text = [NSString stringWithFormat:@"Tweet Influence: %@", [object objectForKey:@"tweetInfluence"]];
return cell;
}
#pragma mark - Table view delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[super tableView:tableView didSelectRowAtIndexPath:indexPath];
}
@end