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c700618862
This applies primarily when beginUpdates / endUpdates is not used. Due to user interaction-driven edits, like reloads or adding content at the bottom, sometimes this is unavoidable in app design and thus critical. I have a diff in flight to make ASDataController / ASRangeController robust against very aggressive thrash testing, which will be added both to the unit test suite and this new example project.
113 lines
3.3 KiB
Objective-C
113 lines
3.3 KiB
Objective-C
/* This file provided by Facebook is for non-commercial testing and evaluation
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* purposes only. Facebook reserves all rights not expressly granted.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#import "ViewController.h"
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#import <AsyncDisplayKit/AsyncDisplayKit.h>
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#import <AsyncDisplayKit/ASAssert.h>
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#define NumberOfSections 10
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#define NumberOfRowsPerSection 20
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#define NumberOfReloadIterations 50
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@interface ViewController () <ASTableViewDataSource, ASTableViewDelegate>
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{
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ASTableView *_tableView;
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}
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@end
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@implementation ViewController
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#pragma mark -
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#pragma mark UIViewController.
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- (instancetype)init
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{
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if (!(self = [super init]))
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return nil;
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_tableView = [[ASTableView alloc] initWithFrame:CGRectZero style:UITableViewStylePlain asyncDataFetching:YES];
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_tableView.separatorStyle = UITableViewCellSeparatorStyleNone; // KittenNode has its own separator
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_tableView.asyncDataSource = self;
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_tableView.asyncDelegate = self;
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return self;
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}
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- (void)viewDidLoad
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{
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[super viewDidLoad];
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[self.view addSubview:_tableView];
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}
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- (void)viewWillLayoutSubviews
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{
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_tableView.frame = self.view.bounds;
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}
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- (void)viewDidAppear:(BOOL)animated
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{
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[super viewDidAppear:animated];
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[self thrashTableView];
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}
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- (void)thrashTableView
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{
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// Keep the viewport moderately sized so that new cells are loaded on scrolling
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ASTableView *tableView = [[ASTableView alloc] initWithFrame:CGRectMake(0, 0, 100, 500)
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style:UITableViewStylePlain
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asyncDataFetching:NO];
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tableView.asyncDelegate = self;
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tableView.asyncDataSource = self;
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[tableView reloadData];
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[tableView reloadSections:[NSIndexSet indexSetWithIndexesInRange:NSMakeRange(1,2)] withRowAnimation:UITableViewRowAnimationNone];
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for (int i = 0; i < NumberOfReloadIterations; ++i) {
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NSInteger randA = arc4random_uniform(NumberOfSections - 1);
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NSInteger randB = arc4random_uniform(NumberOfSections - 1);
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[tableView reloadSections:[NSIndexSet indexSetWithIndexesInRange:NSMakeRange(MIN(randA, randB), MAX(randA, randB) - MIN(randA, randB))] withRowAnimation:UITableViewRowAnimationNone];
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BOOL animated = (arc4random_uniform(1) == 0 ? YES : NO);
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[tableView setContentOffset:CGPointMake(0, arc4random_uniform(tableView.contentSize.height - tableView.bounds.size.height)) animated:animated];
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[[NSRunLoop currentRunLoop] runUntilDate:[NSDate dateWithTimeIntervalSinceNow:0.01]];
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}
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}
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- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
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{
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return NumberOfSections;
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}
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- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
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{
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return NumberOfRowsPerSection;
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}
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- (ASCellNode *)tableView:(ASTableView *)tableView nodeForRowAtIndexPath:(NSIndexPath *)indexPath
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{
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ASTextCellNode *textCellNode = [ASTextCellNode new];
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textCellNode.text = indexPath.description;
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return textCellNode;
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}
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@end
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