方法: 繼承UIButton在- (void)layoutSubviews方法中修改UIButton的imageEdgeInsets和titleEdgeInsets屬性來實(shí)現(xiàn)圖片和文字的重新排列, 通過重寫UIButton的- (void)sendAction:(SEL)action to:(id)target forEvent:(UIEvent *)event方法來實(shí)現(xiàn)防止重復(fù)點(diǎn)擊

以下是全部代碼:

.h文件

typedef NS_ENUM(NSInteger, YBImagePosition) {
    YBImagePositionUp = 1,  // 圖片在上, 文字在下
    YBImagePositionDown,    // 圖片在下, 文字在上
    YBImagePositionLeft,    // 圖片在左, 文字在右
    YBImagePositionRight    // 圖片在右, 文字在左
};

@interface YBButton : UIButton

/** 防止重復(fù)點(diǎn)擊的時間間隔 */
@property (nonatomic, assign) CGFloat delayTime;

/** 圖片文字排列樣式 */
@property (nonatomic, assign) YBImagePosition style;

/** 文字和圖片之間間隔(default 0.0) */
@property (nonatomic, assign) CGFloat margin;

@end

.m文件

@interface YBButton ()

// 時候忽略點(diǎn)擊事件
@property (nonatomic, assign) BOOL isIgnoreEvent;

@end

@implementation YBButton

// 防止按鈕重復(fù)點(diǎn)擊(默認(rèn)時間間隔為0.5s)
- (void)sendAction:(SEL)action to:(id)target forEvent:(UIEvent *)event {
    // 如果是忽略點(diǎn)擊事件則不往下執(zhí)行
    if (self.isIgnoreEvent) { return; }
    // 否則繼續(xù)執(zhí)行
    self.isIgnoreEvent = YES;
    [super sendAction:action to:target forEvent:event];
    // 延遲時間到了之后, 修改isIgnoreEvent的值, 使其下次可以繼續(xù)點(diǎn)擊
    CGFloat eventTimeInterval = self.delayTime == 0 ? 0.5 : self.delayTime;
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(eventTimeInterval * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
        self.isIgnoreEvent = NO;
    });
}

- (void)layoutSubviews {
    [super layoutSubviews];
    
    // 這是系統(tǒng)的默認(rèn)狀態(tài)(如果是系統(tǒng)默認(rèn)狀態(tài)就不處理了)
    if (self.style == YBImagePositionLeft && self.margin == 0) { return; }
    
    CGFloat image_w = self.imageView.bounds.size.width;
    CGFloat image_h = self.imageView.bounds.size.height;
    CGFloat label_w = self.titleLabel.bounds.size.width;
    CGFloat label_h = self.titleLabel.bounds.size.height;
    
    switch (self.style) {
        case YBImagePositionUp:
            self.imageEdgeInsets = UIEdgeInsetsMake(-label_h / 2.0 - self.margin / 2.0, label_w / 2.0, label_h / 2.0 + self.margin / 2.0, -label_w / 2.0);
            self.titleEdgeInsets = UIEdgeInsetsMake(image_h / 2.0 + self.margin / 2.0, -image_w / 2.0, -image_h / 2.0 - self.margin / 2.0, image_w / 2.0);
            break;
        case YBImagePositionDown:
            self.imageEdgeInsets = UIEdgeInsetsMake(label_h / 2.0 + self.margin / 2.0, label_w / 2.0, -label_h / 2.0 - self.margin / 2.0, -label_w / 2.0);
            self.titleEdgeInsets = UIEdgeInsetsMake(-image_h / 2.0 - self.margin / 2.0, -image_w / 2.0, image_h / 2.0 + self.margin / 2.0, image_w / 2.0);
            break;
        case YBImagePositionLeft:
            self.imageEdgeInsets = UIEdgeInsetsMake(0, -self.margin / 2.0, 0, self.margin / 2.0);
            self.titleEdgeInsets = UIEdgeInsetsMake(0, self.margin / 2.0, 0, -self.margin / 2.0);
            break;
        case YBImagePositionRight:
            self.imageEdgeInsets = UIEdgeInsetsMake(0, label_w + self.margin / 2.0, 0, -label_w - self.margin / 2.0);
            self.titleEdgeInsets = UIEdgeInsetsMake(0, -image_w - self.margin / 2.0, 0, image_w + self.margin / 2.0);
            break;
        default:
            break;
    }
}

@end

防止按鈕的重復(fù)點(diǎn)擊這樣實(shí)現(xiàn)起來簡單, 但是如果項(xiàng)目已經(jīng)寫好, 就需要把項(xiàng)目里邊的按鈕全部換成自定義按鈕, 這樣就比較麻煩, 不過使用全局搜索替換還是很快的

還有一個辦法是給UIButton寫一個類別, 通過runTime來實(shí)現(xiàn)

原文鏈接 https://blog.csdn.net/zhuxincheng_1218/article/details/78181096

如果將默認(rèn)時間設(shè)置的過小, 達(dá)不到防止重復(fù)點(diǎn)擊的需求, 就需要在每個創(chuàng)建按鈕的地方手動設(shè)置防止重復(fù)點(diǎn)擊的間隔時間, 如果設(shè)置的過大就會影響相機(jī)的拍照按鈕

還是根據(jù)自己的需求來選擇方案