• iOS开发-- 设置UIButton的文字显示位置、字体的大小、字体的颜色


    btn.frame = CGRectMake(x, y, width, height);

    [btn setTitle: @"search" forState: UIControlStateNormal];

    //设置按钮上的自体的大小

    //[btn setFont: [UIFont systemFontSize: 14.0]];    //这种可以用来设置字体的大小,但是可能会在将来的SDK版本中去除改方法

    //应该使用

    btn.titleLabel.font = [UIFont systemFontOfSize: 14.0];

    [btn seBackgroundColor: [UIColor blueColor]];

    //最后将按钮加入到指定视图superView

    [superView addSubview: btn];

    ==========================================================

    tvnamelabel=[[UIButton alloc]initWithFrame:CGRectMake(5,5,200,40)];

    这样初始化的button,文字默认颜色是白色的,所有如果背景也是白色的话,是看不到文字的,

    btn.contentHorizontalAlignment=UIControlContentHorizontalAlignmentLeft ;//设置文字位置,现设为居左,默认的是居中

    [btn setTitle:@“title”forState:UIControlStateNormal];// 添加文字

    有些时候我们想让UIButton的title居左对齐,我们设置

    btn.textLabel.textAlignment = UITextAlignmentLeft

    是没有作用的,我们需要设置

    btn.contentHorizontalAlignment = UIControlContentHorizonAlignmentLeft;

    但是问题又出来,此时文字会紧贴到做边框,我们可以设置

    btn.contentEdgeInsets = UIEdgeInsetsMake(0,10, 0, 0);

    使文字距离做边框保持10个像素的距离。

    =======================================================

    设置UIButton上字体的颜色设置UIButton上字体的颜色,不是用:

    [btn.titleLabel setTextColor:[UIColorblackColor]];

    btn.titleLabel.textColor=[UIColor redColor];

    而是用:

    [btn setTitleColor:[UIColor blackColor]forState:UIControlStateNormal];

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  • 原文地址:https://www.cnblogs.com/feiling/p/4716187.html
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