Objective-C - Instagramみたいな更新ボタンを実装する - Qiita [キータ]
移植してみました。
def viewDidLoad super self.buildRefreshBtn end # 更新ボタンを生成 def buildRefreshBtn btn = UIBarButtonItem.alloc.initWithBarButtonSystemItem(UIBarButtonSystemItemRefresh, target:self, action:"eventRefreshBtn:") btn.tintColor = UIColor.redColor self.setToolbarItems(arrayWithObjects:"btn", animated:true) self.navigationItem.leftBarButtonItem = btn end # 処理中のイベント def eventActivityIndicator self.getItems(@feed) # 処理中を、更新ボタンに切り替える self.buildRefreshBtn end # 更新ボタンのイベント def eventRefreshBtn(sender) # 更新ボタンを、処理中に切り替える self.buildActivityIndicator end # 処理中を生成 def buildActivityIndicator activityIndicator = UIActivityIndicatorView.alloc.initWithFrame(CGRectMake(0, 0, 30, 20)) activityIndicator.startAnimating btn = UIBarButtonItem.alloc.initWithCustomView(activityIndicator) self.setToolbarItems(arrayWithObjects:"btn", animated:true) self.navigationItem.leftBarButtonItem = btn self.performSelector("eventActivityIndicator", withObject:nil, afterDelay:0.1) end