动画UIButton状态淡入并淡出淡出

Question

我想在点按时将UIbutton淡入其突出显示的状态，然后在用户从按钮上移开手指时淡出。我尝试使用transitionWithView执行此操作，但这仅适用于当用户移除其手指时淡出突出显示状态。

这是我的代码。感谢。

  [UIView transitionWithView:view duration:.2 options:UIViewAnimationOptionTransitionCrossDissolve | UIViewAnimationOptionAllowUserInteraction animations:nil completion:nil]; 

Answer 1

首先制作一个新的UIButton子类，在我的例子中我称之为＆＃34; MyButton＆＃34;。

并使用：

的touchesBegan

touchesEnded

touchesMoved

为了实现您正在寻找的淡入淡出，请执行以下操作：

#import <UIKit/UIKit.h>

@interface MyButton : UIButton

@end



#import "MyButton.h"

@implementation MyButton

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    [UIView animateWithDuration:0.2 animations:^{
          self.viewForBaselineLayout.alpha = 0;
    }];
}

-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
    [UIView animateWithDuration:0.2 animations:^{
        self.viewForBaselineLayout.alpha = 1;
    }];

}

-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
    [UIView animateWithDuration:0.2 animations:^{
        self.viewForBaselineLayout.alpha = 1;
    }];

}
@end

最后在你的UIVIewController中使用它：

@interface ViewController ()

@end

@implementation ViewController



- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    MyButton *button = [[MyButton alloc]init];
    [button setFrame:CGRectMake(100, 100, 100, 100)];
    [button setTintColor:[UIColor blackColor]];
    [button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    [button setTitle:@"HelloThere" forState:UIControlStateNormal];
    [self.view addSubview:button];
}

Answer 2

你试过这个吗？

[UIView animateWithDuration:0.2 animations:^{
    button.highlighted = YES;
}];