IOS UIButton常用属性

//1.添加按钮
UIButton *nameView=[UIButton buttonWithType:UIButtonTypeCustom];
//nameView.backgroundColor=[UIColor redColor];
[nameView setBackgroundImage:[UIImage imageNamed:@"buddy_header_bg"] forState:UIControlStateNormal];

[nameView setBackgroundImage:[UIImage imageNamed:@"buddy_header_bg_highlighted"] forState:UIControlStateHighlighted];

//设置按钮内部的左边箭头图片
[nameView setImage:[UIImage imageNamed:@"buddy_header_arrow"] forState:UIControlStateNormal];
[nameView setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];

//        //设置按钮的内容左对齐
//        nameView.contentHorizontalAlignment=UIControlContentHorizontalAlignmentLeft;
// 设置按钮的内容左对齐
nameView.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;

//设置按钮的内边距
nameView.titleEdgeInsets=UIEdgeInsetsMake(0, 10, 0, 0);
nameView.contentEdgeInsets=UIEdgeInsetsMake(0, 10, 0, 0);
[nameView addTarget:self action:@selector(nameViewClick) forControlEvents:UIControlEventTouchUpInside];

//设置按钮内部的imageView的内容模型为居中
nameView.imageView.contentMode=UIViewContentModeCenter;

//超出边框的内容不需要裁剪
nameView.imageView.clipsToBounds=NO;

[self.contentView addSubview:nameView];
self.nameView=nameView;