Question

我正在以编程方式创建按钮。我想改变按钮背景颜色，同时再次触摸内部，它必须在抬起我的手指后恢复其通常的颜色.....

nine = [UIButton buttonWithType:UIButtonTypeCustom];
[nine setFrame:CGRectMake(15, 105, 65, 40)];
[nine setTitle:@"9" forState:UIControlStateNormal];
[nine setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[nine setBackgroundColor:[UIColor cyanColor]];
[nine addTarget:self action:@selector(clickDigit:) forControlEvents:UIControlEventTouchUpInside];
[nine addTarget:self action:@selector(changeButtonBackGroundColor:) forControlEvents:UIControlEventTouchUpInside];

[self.view addSubview:nine];

//更改背景颜色

-(void)changeButtonBackGroundColor:(id) sender
{
    [nine setBackgroundColor:[UIColor redColor]];
}

这里创建了changeBackgroundColor方法来改变该按钮的颜色。它改变了颜色。

Answer 1

不知道这是否与您的问题有关，但是：此

[nine setBackgroundColor:[UIColor redColor]];

应该是

[sender setBackgroundColor:[UIColor redColor]];

编辑：改变这个

[nine addTarget:self action:@selector(changeButtonBackGroundColor:) forControlEvents:UIControlEventTouchUpInside];

到

[nine addTarget:self action:@selector(changeButtonBackGroundColor:) forControlEvents:UIControlEventTouchDown];
[nine addTarget:self action:@selector(resetButtonBackGroundColor:) forControlEvents:UIControlEventTouchUpInside];
[nine addTarget:self action:@selector(resetButtonBackGroundColor:) forControlEvents:UIControlEventTouchUpOutside];
[nine addTarget:self action:@selector(resetButtonBackGroundColor:) forControlEvents:UIControlEventTouchCancel];

并添加方法：

- (void)resetButtonBackGroundColor: (UIButton*)sender {
    [sender setBackgroundColor:[UIColor cyanColor]];
}

Answer 2

我认为你有两种选择..

<强>首先

你可以把 [nine setBackgroundColor：[UIColor redColor]]; 放在“clickDigit”里面（和dasdom说重命名为发件人并改为（UIButton *）发件人）..

更改

[nine addTarget:self action:@selector(changeButtonBackGroundColor:) forControlEvents:UIControlEventTouchUpInside];

到

[nine addTarget:self action:@selector(changeButtonBackGroundColor:) forControlEvents:UIControlEventTouchUpOutside];

和方法“changeButtonBackGroundColor”

[sender setBackgroundColor:[UIColor cyanColor]];

<强>第二

创建通用UIControlEvents

[nine addTarget:self action:@selector(changeButtonBackGroundColor:) forControlEvents:UIControlEventAllEvents];

-(void)changeButtonBackGroundColor:(UIButton*) sender{
if ([sender.backgroundColor isEqual:[UIColor redColor]]){
    [sender setBackgroundColor:[UIColor cyanColor]];
}else{
    [sender setBackgroundColor:[UIColor redColor]];        
}}

我没有尝试此代码

更改UIButton背景颜色

2 个答案: