UIButton *btn = [[UIButton alloc] init];    [btn setFrame:frame];    [btn setTitleColor:titleColor forState:UIControlStateNormal];    [btn setTitle:title forState:UIControlStateNormal];    [btn addTarget:target action:action forControlEvents:UIControlEventTouchUpInside];    [btn setImage:normalI forState:UIControlStateNormal];　　//按钮内容对齐方式     btn.contentHorizontalAlignment = UIControlContentHorizontalAlignmentRight;   //按钮image位置 btn.imageEdgeInsets = UIEdgeInsetsMake(0,btn.titleLabel.bounds.size.width, 0,-btn.titleLabel.bounds.size.width);    //按钮title的位置    btn.titleEdgeInsets = UIEdgeInsetsMake(0,-btn.imageView.image.size.width, 0, btn.imageView.image.size.width);　　//按钮图片自适应     btn.imageView.contentMode= UIViewContentModeScaleAspectFit;