[self.tableview reloadData];导致闪烁 [英] [self.tableview reloadData]; causes flickering

问题描述

问题是UI出现然后得到更新：给出一个闪烁的影响。

The problem is the UI appears and then gets updated : giving a flickering affect.

我希望UI只在用户输入app时更新一次，因此我已经把重新加载到ViewDidLoad ..这是代码..任何帮助如何删除这个闪烁...一些代码示例将有所帮助。

I want the UI to be updated only once when user enters app, thus i've put reload in ViewDidLoad.. Here is the code .. Any help how can remove this flickering ... Some code example would help.

- (void)viewDidLoad { 

[super viewDidLoad];

self.myTableView.dataSource = self;
self.myTableView.delegate = self;

PFQuery * getCollectionInfo = [PFQuery queryWithClassName:@"Collection"];   // make query

[getCollectionInfo orderByDescending:@"updatedAt"];
[getCollectionInfo setCachePolicy:kPFCachePolicyCacheThenNetwork];

dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
dispatch_async(queue, ^{
    [getCollectionInfo findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
        if (!error) {
            CollectionQueryResult = (NSMutableArray *)objects;
                [self.tableView reloadData];


            // whenevr get result
        }
        else{
            //no errors
        }


    }];
});

推荐答案

为什么不简单地调用reloadSections方法而不是[self.tableView reloadData];

Why don't you simply call reloadSections method instead of [self.tableView reloadData];

[self.tableView reloadSections:[NSIndexSet indexSetWithIndex:0] withRowAnimation:UITableViewRowAnimationNone];

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