按iOS时按钮不动画

Question

我已经以编程方式在xcode中添加了按钮，但是当我通过模拟器运行它时，它没有动画，即它不像通常那样闪烁？

这是我添加按钮的方式：

closeButton = [[UIButton alloc] init];
closeButton.frame = CGRectMake(505, 5, 20, 20);
[closeButton setImage:imgBtn forState:UIControlStateNormal];
[closeButton setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];
[closeButton addTarget:self action:@selector(closeButtonPressed:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:closeButton];

Answer 1

您可以添加此内容以查看触摸事件

closeButton.showsTouchWhenHighlighted = YES;

或者您必须使用按钮类型UIButtonTypeRoundedRect来查看按下按钮效果。

Answer 2

试试这个

closeButton = [[UIButton alloc] init];
closeButton = [UIButton buttonWithType:UIButtonTypeRoundedRect]
closeButton.frame = CGRectMake(505, 5, 20, 20);
[closeButton setImage:imgBtn forState:UIControlStateNormal];
[closeButton setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];
[closeButton addTarget:self action:@selector(closeButtonPressed:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:closeButton];