ios – ObjectiveC – UIButton在突出显示/选中时保持突出显示/选定,背景颜色和字体颜色会发生变化

- (IBACtion)btnPressed:(UIButton*)sender {

/* Below for loop works as a reset for setTing the default colour of button and to not SELEct the same one twice*/
for (UIButton* button in buttons) {
    [button setSELEcted:NO];
    [button setBACkgroundColor:[UIColor whiteColor]];
    [button setUserInteractionEnabled:true];
// [button settitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    [button settitleColor:[UIColor blackColor] forState:UIControlStateSELEcted];
}

NSInteger tag = sender.tag;        // Here we get the sender tag,which we can use for our needs. Also we can directly use the sender and get the title or whatsoever needed.

/*Now below line works as a toggle for the button where multiple buttons can't be SELEcted at the same time.*/
sender.SELEcted = ! sender.SELEcted;      

if(sender.SELEcted)
{
/* Here we set the color for the button and handle the SELEcted function*/
    [sender setSELEcted:YES];
    [sender setUserInteractionEnabled:false];
    [sender setBACkgroundColor:[UIColor magentaColor]];
}
}

您还可以使用“sender.Layer”属性为按钮添加自定义图层.

整个代码添加在下面,

所有按钮的动作都需要连接到单个选择器方法,
– (IBACtion)btnPressed：(UIButton *)寄件人;

#import "ViewController.h"

@interface ViewController ()
@property (weak,nonatomiC) IBOutlet UIView *mainViewOL;
@property (weak,nonatomiC) IBOutlet UIButton *btn1;
@property (weak,nonatomiC) IBOutlet UIButton *btn2;
@property (weak,nonatomiC) IBOutlet UIButton *btn3;
@property (weak,nonatomiC) IBOutlet UIButton *btn4;
@property (weak,nonatomiC) IBOutlet UIButton *btn5;
@property (weak,nonatomiC) IBOutlet UIButton *btn6;
@property (weak,nonatomiC) IBOutlet UIButton *btn7;
@property (weak,nonatomiC) IBOutlet UIButton *btn8;
@property (weak,nonatomiC) IBOutlet UIButton *btn9;

@end

@implementation ViewController

NSArray* buttons;

- (void)viewDidLoad {
    [super viewDidLoad];

    buttons = [NSArray arrayWithObjects:_btn1,_btn2,_btn3,_btn4,_btn5,_btn6,_btn7,_btn8,_btn9,nil];

    self.mainViewOl.layer.shadowRadius  = 5;
    self.mainViewOl.layer.shadowColor   = [UIColor colorWithRed:211.f/255.f green:211.f/255.f blue:211.f/255.f alpha:1.f].CGColor;
    self.mainViewOl.layer.shadowOffset  = CGSizeMake(0.0f,0.0f);
    self.mainViewOl.layer.shadowOpacity = 0.9f;
    self.mainViewOl.layer.masksToBounds = NO;

    /* I Have added the 9 button's in an array and used it to reduce the lines of code and for easy understanding as well*/
    for (UIButton* button in buttons) {
        button.layer.borderColor = [UIColor lightGrayColor].CGColor;
        button.layer.borderWidth =1.0f;
    }
}

- (IBACtion)btnPressed:(UIButton*)sender {
    for (UIButton* button in buttons) {
        [button setSELEcted:NO];
        [button setBACkgroundColor:[UIColor whiteColor]];
        [button setUserInteractionEnabled:true];
     // [button settitleColor:[UIColor blackColor] forState:UIControlStateNormal];        //Based on your needs and colour variant you cant add properties to the button for different control states.
        [button settitleColor:[UIColor blackColor] forState:UIControlStateSELEcted];
    }

    NSInteger tag = sender.tag;

    sender.SELEcted = ! sender.SELEcted;


    if(sender.SELEcted)
    {
        [sender setSELEcted:YES];
        [sender setUserInteractionEnabled:false];
        [sender setBACkgroundColor:[UIColor purpleColor]];
        sender.BACkgroundColor = [UIColor magentaColor];
    }
}

@end

最后的结果

希望这可以帮助.