Help us understand the problem. What is going on with this article?

UIの更新をマルチスレッドで

More than 5 years have passed since last update.

dispatch処理する関数

GDCを使うとそもそもマルチスレッドの処理も簡単に記述できるのですが、読みやすいプログラムにするために以下のようなメソッドを用意しておきます。UIの更新を非同期にしたいとかなら十分。

    func dispatch_async_main(block: () -> ()) {
        dispatch_async(dispatch_get_main_queue(), block)
    }

    func dispatch_async_global(block: () -> ()) {
        dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), block)

マルチスレッド処理の記述

上記の関数を利用してバックグランドとメインのUIの更新処理をそれぞれのブロックに記述します。

  dispatch_async_global {
            // Background operations
            // 通信など時間がかかる処理            

            // Mainと同期する
            self.dispatch_async_main {
                // UIの更新などメインスレッドで同期させたい処理
            }
Why not register and get more from Qiita?
  1. We will deliver articles that match you
    By following users and tags, you can catch up information on technical fields that you are interested in as a whole
  2. you can read useful information later efficiently
    By "stocking" the articles you like, you can search right away
Comments
No comments
Sign up for free and join this conversation.
If you already have a Qiita account
Why do not you register as a user and use Qiita more conveniently?
You need to log in to use this function. Qiita can be used more conveniently after logging in.
You seem to be reading articles frequently this month. Qiita can be used more conveniently after logging in.
  1. We will deliver articles that match you
    By following users and tags, you can catch up information on technical fields that you are interested in as a whole
  2. you can read useful information later efficiently
    By "stocking" the articles you like, you can search right away
ユーザーは見つかりませんでした