触动开始延迟

Question

我有一个子类UIView,并添加了touchesBegan和touchesEnd方法......

在touchesBegan,我backgroundColor通过使用self.backgroundColor = [UIColor greenColor]... 将白色设置为绿色,touchesEnd我将颜色重置为白色.

它工作但很慢.通过点击视图,它需要0.5 - 1.0秒,直到我看到绿色.

选择一个单元格UITableView的速度要快得多.

Answer 1

尝试这个：

self.view.userInteractionEnabled = YES;
    UILongPressGestureRecognizer *recognizer = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(doCallMethod:)];
    recognizer.delegate = self;
    recognizer.minimumPressDuration = 0.0;
    [self.view addGestureRecognizer:recognizer];

- (void)doCallMethod:(UILongPressGestureRecognizer*)sender {
    if(sender.state == UIGestureRecognizerStateBegan){
        NSLog(@"Begin");
        self.view.backgroundColor = [UIColor greenColor];
    }else if (sender.state == UIGestureRecognizerStateEnded){
        NSLog(@"End");
        self.view.backgroundColor = [UIColor whiteColor];
    }
}

注意： 它会工作得更快。