UIButton

//创建btn

setBackgrounImage设置背景图片，背景就是透明的了，用setImage就有背景颜色了。

UIButton *a = [UIButton buttonWithType:UIButtonTypeCustom];
a.frame = CGRectMake(0, 0, 85, 308);
[a setBackgroundImage:[UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"prox0" ofType:@"png"]] forState:UIControlStateNormal];    
[a addTarget:self action:@selector(picClick:) forControlEvents:UIControlEventTouchDown];
[tempView addSubview:a];

 [myBtn setTitle:@"拍照"forState:UIControlStateNormal];//txt文字内容

[myBtn setTitleColor:[UIColorredColor]forState:UIControlStateNormal];//设置标题颜色

[myBtn setTitleShadowColor:[UIColorgrayColor]forState:UIControlStateNormal ];//阴影        

myBtn.backgroundColor = [UIColorgrayColor];//背景颜色

setTitleShadowColor:forState://去点击黑影

tempBtn.titleLabel.font = [UIFont systemFontOfSize: 14.0]; //设置字体大小