IOS_UIButton去掉系统的按下高亮置灰效果

最新推荐文章于 2020-12-24 12:30:34 发布

原创最新推荐文章于 2020-12-24 12:30:34 发布 · 2.4w 阅读

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#高亮图片 #UIButton #按下 #setAdjustsImageWhenH

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本文介绍了两种方法来去掉iOS UIButton在被按下的时候出现的默认高亮变灰效果。第一种是通过调整UIButton的属性，如`reversesTitleShadowWhenHighlighted`, `adjustsImageWhenHighlighted`, `adjustsImageWhenDisabled`和`showsTouchWhenHighlighted`。第二种方法则是设置正常状态和高亮状态使用同一张图片。" 71645721,6650138,CentOS6启动倒计时后挂起故障排查,"['centos', '故障修复', '系统启动', '配置文件']

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第一种方法：

setAdjustsImageWhenHighlighted // default is YES. if YES, image is drawn darker when highlighted(pressed)

   UIButton *priceBtn = [UIButton buttonWithType:UIButtonTypeCustom];
    [priceBtn setTag:PRICE_BTN_TAG];
    [priceBtn setFrame:CGRectMake(DISTANCE_OF_SCREEN_BORDER, 3, 63, 31.5)];
    [priceBtn setBackgroundColor:[UIColor clearColor]];
    [priceBtn setImage:[UIImage imageNamed:@"sequence_up_pressed.png"] forState:UIControlStateNormal];
    [priceBtn addTarget:self action:@selector(priceBtnClicked:) forControlEvents:UIControlEventTouchUpInside];
    [priceBtn setAdjustsImageWhenHighlighted:NO];

相关属性：

@property(nonatomic) BOOL reversesTitleShadowWhenHighlighted; // default is NO. if YES, shadow reverses to shift between engrave and emboss appearance

@property(nonatomic) BOOL adjustsImageWhenHighlighted; // default is YES. if YES, image is drawn darker when highlighted(pressed)

@property(nonatomic) BOOL adjustsImageWhenDisabled; // default is YES. if YES, image is drawn lighter when disabled

@property(nonatomic) BOOL showsTouchWhenHighlighted; // default is NO. if YES, show a simple feedback (currently a glow) while highlighted

第二种方法：

本群的Misery-iOS-武汉提到了一个巧妙的方法正常&高亮用相同的图片

    [priceBtn setImage:[UIImage imageNamed:@"sequence_up_pressed.png"] forState:UIControlStateNormal];
    [priceBtn setImage:[UIImage imageNamed:@"sequence_up_pressed.png"] forState:UIControlStateHighlighted];

欢迎其他同志们补充