动画块不工作

Question

我试图通过动画顺序更新uilabel,据我所知,标签永远不会动画,只是从默认文本到[tweets objectAtIndex:2]

- (void) statusesReceived:(NSArray *)statuses
               forRequest:(NSString *) connectionIdentifier
{
    for ( NSDictionary *dict in statuses )
    {
        [tweets addObject:[dict objectForKey:@"text" ]];
    }




        tweetsLabel.text = [tweets objectAtIndex:0];
        [tweetsLabel setFont: [UIFont fontWithName:@"Verdana-BoldItalic" size:42]];



        [UIView animateWithDuration:5.5 
                         animations:^{tweetsLabel.transform =CGAffineTransformIdentity;} completion:^(BOOL finished){
                             tweetsLabel.text = [tweets objectAtIndex:1];

        [UIView animateWithDuration:5.5 
                         animations:^{tweetsLabel.transform =CGAffineTransformIdentity;} completion:^(BOOL finished){
                             tweetsLabel.text = [tweets objectAtIndex:2];

                         }];}]; 



    [self.tableView reloadData];
}

Answer 1

你不希望同时在同一个视图上发生两个动画,它们会相互抵消,可以这么说.您需要一个能够完成所需操作的动画块.