iphone開發實現單選框

//畫圖

-(void)addSecondZone:(UIView*)contentView

//按鈕圖片

UIImage *selecticonNo =[UIImage imageNamed:SelecticonNo];

UIImage *selecticon =[UIImage imageNamed:Selecticon];

        UIView *childSecondView;

        childSecondView = [[UIView alloc] initWithFrame:CGRectMake(0, 155 , 320, 500)];

 

       int pointY =0;

            for (int i=0;i<4;i++) {

[childSecondView addSubImageView:contentbar Rect:CGRectMake(0, pointY, 320,contentbar.size.height/2)];

UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];

[button setBackgroundImage:selecticonNo forState:UIControlStateNormal];

[button setBackgroundImage:selecticon forState:UIControlStateSelected];

button.frame=CGRectMake(310-selecticonNo.size.width/2, pointY+2,                               selecticonNo.size.width/2,selecticonNo.size.height/2);

[button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];

button.tag=i + 1;

[button addTarget:self action:@selector(selectTransType:) forControlEvents:UIControlEventTouchUpInside];

if(i==0)

{

[button setSelected:YES];

}

[childSecondView addSubview:button];

pointY += 40;

}

 }

//單選框點擊

-(void)selectTransType:(id)sender

{

 

//單選鈕

UIImage *selecticonNo =[UIImage imageNamed:SelecticonNo];

UIImage *selecticon =[UIImage imageNamed:Selecticon];

UIButton *btn=nil;

 

for (int i=1;i<5;i++) {

btn = (UIButton *)[mainZone viewWithTag:i];   //擷取選項按鈕  mainZone 是最外層的視圖

if ([btn isSelected]) {

[btn setBackgroundImage:selecticonNo forState:UIControlStateNormal];

[btn setSelected:NO];

}

}

[sender setBackgroundImage:selecticon forState:UIControlStateSelected];

[sender setSelected:YES];

}