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[btn setBackgroundImage:[UIImage imageNamed:@"icon"] forState:UIControlStateNormal];
[btn seBackgroundColor: [UIColor blueColor]];
[btn setTitle:@"title" forState:UIControlStateNormal];
btn.titleLabel.font = [UIFont systemFontOfSize: 14.0];
[btn setTitleColor:[UIColor blackColor]forState:UIControlStateNormal];
//设置标题偏移量
[btn setTitleEdgeInsets:UIEdgeInsetsMake(0, -10, 0, 0)];
[btn setImageEdgeInsets:UIEdgeInsetsMake(0, 10, 0, 0)];
[btn addTarget:self action:@selector(btnAction:) forControlEvents:UIControlEventTouchUpInside];
label.text = @”文本信息”;
lable.textColor = [UIColor redColor];
label.textAlignment = NSTextAlignmentLeft;
label.lineBreakMode = NSLineBreakByCharWrapping;//换行
label.shadowColor = [UIColor greenColor];
//设置文本投影位置(与系统坐标一致)
label.shadowOffset = CGSizeMake(0, 5);
label.font = [UIFont systemFontOfSize:20];//字号
label.font = [UIFont boldSystemFontOfSize:20]; //加粗
label.font = [UIFont fontWithName:@"Arial" size:16]; //指定
label.textAlignment = NSTextAlignmentCenter; //还有NSTextAlignmentLeft、 NSTextAlignmentRight.
label.numberOfLines = 0;
//圆角
label.layer.cornerRadius = 5;
label.clipsToBounds = YES;
NSMutableAttributedString *str = [[NSMutableAttributedString alloc] initWithString:@"这只是一个文本而已，没有其他的作用。这只是一个文本而已，没有其他的作用。这只是一个文本而已，没有其他的作用。这只是一个文本而已，没有其他的作用"];
//设置指定区域文本的字体大小
[str addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:14] range:NSMakeRange(0, 10)];
[str addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:20] range:NSMakeRange(11, str.length-11)];
//设置指定区域文本的字体颜色
[str addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(0, 20)];
[str addAttribute:NSForegroundColorAttributeName value:[UIColor greenColor] range:NSMakeRange(21, str.length-21)];
//设置指定区域文本的字间距
[str addAttribute:NSKernAttributeName value:@3 range:NSMakeRange(0, 15)];
[str addAttribute:NSKernAttributeName value:@5 range:NSMakeRange(15, str.length-15)];
self.imageView.image = [UIImage imageNamed:@"demo"];
