如何更改按钮图像时，按下按钮

Question

我想显示按钮不同的图像用户点击该按钮后... 我该怎么做

Answer 1

您可以定义图像按钮按下的不同状态。这里有一个简单的例子：

UIButton *submitbutton = [UIButton buttonWithType:UIButtonTypeCustom]; 
// position in the parent view and set the size of the button 
submitbutton.frame = CGRectMake(165, 20, 149, 39); 
[submitbutton setTitle:@"Submit Booking" forState:UIControlStateNormal]; 

// Add image to button for normal state 
UIImage * btnImage1 = [UIImage imageNamed:@"SubmitBooking-normal.png"]; 
[submitbutton setImage:btnImage1 forState:UIControlStateNormal]; 

// Add image to button for pressed state 
UIImage * btnImage2 = [UIImage imageNamed:@"SubmitBooking-pressed.png"]; 
[submitbutton setImage:btnImage2 forState:UIControlStateHighlighted]; 


// add targets and actions 
[submitbutton addTarget:self action:@selector(submitBookingButtonPressed:) forControlEvents:UIControlEventTouchUpInside]; 
// add to a some parent view. 
[someview addSubview:submitbutton]; 

你可能想要自定义其他的东西。你可以阅读更多关于这些选项here

Answer 2

另一种方式是选择按钮并指定你想要然后将图像从实用工具栏来更改状态配置，以突出显示，然后分配上点击图像

看到链接下面的屏幕截图

screen shot