iOS小效果（4）按钮按下显示不同的效果

来源：互联网发布：key查看器软件编辑：程序博客网时间：2024/06/05 04:09

按钮在按下，抬起显示不同的效果：

实现方式1:

设置不同情况的属性，就会得到如图的效果。

实现方式2:

代码实现（核心代码）：

- (void)viewDidLoad{    [super viewDidLoad];// Do any additional setup after loading the view, typically from a nib.    UIButton *btn=[[UIButton alloc] init];    btn.frame=CGRectMake(100, 100, 100, 100);    //普通下的属性    UIImage *normal=[UIImage imageNamed:@"btn_01.png"];    [btn setBackgroundImage: normal forState:UIControlStateNormal];    [btn setTitle:@"点我啊" forState:UIControlStateNormal];    [btn setTitleColor: [UIColor redColor] forState:UIControlStateNormal];    //高亮情况下的属性    normal=[UIImage imageNamed:@"btn_02.png"];    [btn setBackgroundImage: normal forState:UIControlStateHighlighted];    [btn setTitle:@"真点啊" forState:UIControlStateHighlighted];    [btn setTitleColor: [UIColor greenColor] forState:UIControlStateHighlighted];    [btn addTarget:self action:@selector(btnClick) forControlEvents:UIControlEventTouchUpInside];    [self.view addSubview:btn];       //文本输入框    UITextField *tf=[[UITextField alloc] init];    tf.frame=CGRectMake(100, 260, 100, 20);    //[tf setText:@"hello"];    CGFloat cgx=self.view.frame.size.width*0.5;    CGFloat cgy=self.view.frame.size.height*0.5;    tf.center=CGPointMake(cgx, cgy);    [tf setBackgroundColor:[UIColor blueColor ]];    [self.view addSubview:tf];}-(void)btnClick{    NSLog(@"点了");}

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