IOS implements multiple buttons and selects one of the other best ways to uncheck State

First we define an intermediate variable

@property (strong,nonatomic) UIButton * TMPBTN;

Then in the Viewdidload method, create four buttons, set their properties, and click on the method, in addition to set the middle variable tmpbtn = nil;

-(void) viewdidload{     nsarray * array = [nsarray  arraywithobjects:@ "Default", @ "Sales", @ "price", @ "Time",  nil];         for   (int i = 0; i<4; i ++)  {             uibutton * button = [[uibutton alloc]initwithframe: CGRectMake (80*i, 0, 80, 40)];             [button setTitle:[array objectAtIndex:i] forState:UIControlStateNormal];             [button settitlecolor:[uicolor graycolor ] forstate:uicontrolstatenormal];             [button settitlecolor:[uicolor blackcolor] forstate:uicontrolstateselected];             [button.titleLabel setFont:[UIFont systemFontOfSize:14]];             [button.layer setBorderWidth:0.3];             button.userInteractionEnabled = YES;             [button addTarget:self  Action: @selector (buttonselected:)  forControlEvents:UIControlEventTouchUpInside];             [button setBackgroundColor:[UIColor whiteColor]];             [button setTag:i];             [self.view addsubview:button];}

Let's look at buttonselected: the implementation process inside

-(void) buttonselected: (uibutton*) sender{if (_tmpbtn = = nil) {sender.selected = YES;    _TMPBTN = sender;        } else if (_tmpbtn!=nil && _tmpbtn = = Sender) {sender.selected = YES;        } else if (_tmpbtn!= btn && _tmpbtn!=nil) {_tmpbtn.selected = NO;        sender.selected = YES;    _TMPBTN = BTN; }}

Direct code pasting is available.

IOS implements multiple buttons and selects one of the other best ways to uncheck State