• ios开发之--添加选择首个和最后一个按钮+单选


    项目中有个需求,就是仿照页数进行选择,有首页和尾页,这里简单写了个demo,代码如下:

    1、创建button

    for (int i=0; i<10; i++) {
            UIButton *btns=[UIButton buttonWithType:UIButtonTypeCustom];
            btns.frame=CGRectMake(35+(i%3)*60, 100+(i/3)*40, 50, 30);
            [btns addTarget:self action:@selector(changeClick:) forControlEvents:UIControlEventTouchUpInside];
            btns.tag=100+i;
            btns.backgroundColor=UIColor.lightGrayColor;
            [btns setTitle:[NSString stringWithFormat:@"%d",i] forState:UIControlStateNormal];
            [self.view addSubview:btns];
        }
        
        //首页按钮
        UIButton *leftBtn=[UIButton buttonWithType:UIButtonTypeCustom];
        [leftBtn addTarget:self action:@selector(changeClickTwo:) forControlEvents:UIControlEventTouchUpInside];
        leftBtn.backgroundColor=UIColor.blueColor;
        leftBtn.frame=CGRectMake(20, 300, 50, 30);
        leftBtn.tag=609;
        [self.view addSubview:leftBtn];
        
        //尾页按钮
        UIButton *rightBtn=[UIButton buttonWithType:UIButtonTypeCustom];
        [rightBtn addTarget:self action:@selector(changeClickTwo:) forControlEvents:UIControlEventTouchUpInside];
        rightBtn.backgroundColor=UIColor.blueColor;
        rightBtn.frame=CGRectMake(200, 300, 50, 30);
        rightBtn.tag=610;
        [self.view addSubview:rightBtn];

    如果需要第一个按钮默认选中,在上面的for循环里面添加如下代码:

    if (i==0) {
                self.temBtn=btns;
                self.temBtn.backgroundColor=UIColor.redColor;
            }

    具体的方法实现:

    //单选效果
    -(void)changeClick:(UIButton *)button{
        for (int i=0; i<10; i++) {
            if (button.tag==100+i) {
                button.selected=YES;
                button.backgroundColor=[UIColor redColor];
                self.temBtn=button;
                continue;
            }
            
            UIButton *btn=(UIButton *)[self.view viewWithTag:i+100];
            btn.selected=NO;
            btn.backgroundColor=UIColor.lightGrayColor;
        }
    }
    
    //选中首页和尾页
    -(void)changeClickTwo:(UIButton *)button{
        if (button.tag==609) {
            for (int i=0; i<10; i++) {
                
                UIButton *btn=(UIButton *)[self.view viewWithTag:i+100];
                
                if (self.temBtn==btn) {
                    self.temBtn.backgroundColor=[UIColor lightGrayColor];
                }else{
                    if (btn.tag==100) {
                        btn.backgroundColor=UIColor.redColor;
                        self.temTwoBtn=btn;
                    }else{
                        
                        if (self.temTwoBtn==btn) {
                            self.temTwoBtn.backgroundColor=UIColor.lightGrayColor;
                        }else{
                            if (btn.tag==100) {
                                btn.backgroundColor=UIColor.redColor;
                            }
                            
                            btn.backgroundColor=UIColor.lightGrayColor;
                        }
                    }
                }
                
            }
            
        }else{
            for (int i=0; i<10; i++) {
                
                UIButton *btn=(UIButton *)[self.view viewWithTag:i+100];
                
                if (self.temTwoBtn==btn) {
                    self.temTwoBtn.backgroundColor=[UIColor lightGrayColor];
                }else{
                    if (btn.tag==109) {
                        btn.backgroundColor=UIColor.redColor;
                    }else{
                        btn.backgroundColor=UIColor.lightGrayColor;
                    }
                }
                
            }
        }
    }

    方法可能写的有点low,不过功能是显示了!效果图就不上传了,希望能帮到大家!

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  • 原文地址:https://www.cnblogs.com/hero11223/p/14531107.html
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