方案一
- (void)buttonClickMethod:(UIButton *)sender {
// 每次點擊的時候都會先取消一次響應,然后調用perform方法,延遲響應該事件,避免多次響應
[NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(delayResponseMethod) object:btn];
// 延遲執行,一般設置1秒左右,太久會顯得有延遲,響應也不能太慢
[self performSelector:@selector(delayResponseMethod) withObject:btn afterDelay:1.0];
}
- (void)delayResponseMethod {
NSLog(@"延遲執行的方法");
}
方案二
- 通過NSTimer延遲執行方法,和方案一類似
//定時器
@property (nonatomic, strong) NSTimer *timer;//定時器
@property(nonatomic, assign) NSInteger count;
//需要給count一個默認值,比如0
- (void)buttonClickMethod:(UIButton *)sender {
self.count ++;
[self.timer invalidate];
self.timer = nil;
self.timer =[NSTimer timerWithTimeInterval:1.0 target:self selector:@selector(delayResponseMethod) userInfo:nil repeats:NO];
/* NSRunLoopCommonModes 防止滾動的時候有延遲*/
[[NSRunLoop currentRunLoop] addTimer:self.timer forMode:NSRunLoopCommonModes];
}
- (void)delayResponseMethod {
NSLog(@"延遲執行的方法");
}
方案三
通過Runtime交換UIButton的響應事件方法,從而控制響應事件的時間間隔。
- 轉載自CSDN博主「walkerwqp」的文章,如有問題,聯系本人可刪除
- 原文鏈接:https://blog.csdn.net/walkerwqp/java/article/details/92561515
實現步驟如下:
1 創建一個UIButton的分類,使用runtime增加public屬性cs_eventInterval和private屬性cs_eventInvalid。
2 在+load方法中使用runtime將UIButton的-sendAction:to:forEvent:方法與自定義的cs_sendAction:to:forEvent:方法進行交換
3 使用cs_eventInterval作為控制cs_eventInvalid的計時因子,用cs_eventInvalid控制UIButton的event事件是否有效。
*代碼實現如下
@interface UIButton (Extension)
/** 時間間隔 */
@property(nonatomic, assign)NSTimeInterval cs_eventInterval;
@end
import "UIButton+Extension.h"
import <objc/runtime.h>
static char *const kEventIntervalKey = "kEventIntervalKey"; // 時間間隔
static char *const kEventInvalidKey = "kEventInvalidKey"; // 是否失效
@interface UIButton()
/** 是否失效 - 即不可以點擊 */
@property(nonatomic, assign)BOOL cs_eventInvalid;
@end
@implementation UIButton (Extension)
- (void)load {
// 交換方法
Method clickMethod = class_getInstanceMethod(self, @selector(sendAction:to:forEvent:));
Method cs_clickMethod = class_getInstanceMethod(self, @selector(cs_sendAction:to:forEvent:));
method_exchangeImplementations(clickMethod, cs_clickMethod);
}
pragma mark - click
- (void)cs_sendAction:(SEL)action to:(id)target forEvent:(UIEvent *)event {
if (!self.cs_eventInvalid) {
self.cs_eventInvalid = YES;
[self cs_sendAction:action to:target forEvent:event];
[self performSelector:@selector(setCs_eventInvalid:) withObject:@(NO) afterDelay:self.cs_eventInterval];
}
}
pragma mark - set | get
(NSTimeInterval)cs_eventInterval {
return [objc_getAssociatedObject(self, kEventIntervalKey) doubleValue];
}(void)setCs_eventInterval:(NSTimeInterval)cs_eventInterval {
objc_setAssociatedObject(self, kEventIntervalKey, @(cs_eventInterval), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}(BOOL)cs_eventInvalid {
return [objc_getAssociatedObject(self, kEventInvalidKey) boolValue];
}(void)setCs_eventInvalid:(BOOL)cs_eventInvalid {
objc_setAssociatedObject(self, kEventInvalidKey, @(cs_eventInvalid), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
測試代碼如下
/** 方法三 */(void)drawExpecialBtn{
UIButton *btn = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 200, 100)];
[btn setTitle:@"按鈕點擊" forState:UIControlStateNormal];
[btn setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
// 按鈕不可點擊時,文字顏色置灰
[btn setTitleColor:[UIColor grayColor] forState:UIControlStateDisabled];
[btn setTitleColor:[UIColor blueColor] forState:UIControlStateHighlighted];
btn.center = self.view.center;
[btn addTarget:self action:@selector(tapBtn:) forControlEvents:UIControlEventTouchUpInside];
btn.cs_eventInterval = 2.0;
[self.view addSubview:btn];
}(void)tapBtn:(UIButton *)btn {
NSLog(@"按鈕點擊...");
}在方法三中交互UIButton的sendAction:to:forEvent:方法,實際上交互的是UIControl的sendAction:to:forEvent:方法,所以在使用·UIControl·或其·子類(比如UISlider)·的·sendAction:to:forEvent:·方法時會引起參數缺失的崩潰。