Objectivec 如何创建圆形按钮

发布于08月05日

我想创建一个圆形按钮.这个按钮应该看起来像一个圆圈.

这个代码给出了圆形矩形按钮.

UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
button.frame     = CGRectMake(100, 100, 100, 30);
UIImage  *image  = [UIImage imageNamed:@"01.png"];
[button setImage:image forState:UIControlStateNormal];
[image release];

我想出了如何创建一个圆形矩形按钮，但我想创建一个圆形按钮.我需要改变什么？

推荐答案

Tested Code:

 #import <QuartzCore/QuartzCoreH>

-(void)roundButtonDidTap:(UIButton*)tappedButton;

#define ROUND_BUTTON_WIDTH_HEIGHT YourButtonWidthToBeSetHere

-(void)roundButtonDidTap:(UIButton*)tappedButton{

    NSLog(@"roundButtonDidTap Method Called");

}



UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];

[button setImage:[UIImage imageNamed:@"TimoonPumba.png"] forState:UIControlStateNormal];

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

//width and height should be same value
button.frame = CGRectMake(0, 0, ROUND_BUTTON_WIDTH_HEIGHT, ROUND_BUTTON_WIDTH_HEIGHT);

//Clip/Clear the other pieces whichever outside the rounded corner
button.clipsToBounds = YES;

//half of the width
button.layer.cornerRadius = ROUND_BUTTON_WIDTH_HEIGHT/2.0f;
button.layer.borderColor=[UIColor redColor].CGColor;
button.layer.borderWidth=2.0f;

[self.view addSubview:button];

Result

在此处输入图像描述