ios 给NSTimer添加Block回调版本创建方法

「爱情、让人受尽委屈。」 2022-09-26 13:00 104阅读 0赞

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1.  //  
2.  //  NSTimer+Convenience.h  
3.  //  NSTimerBlockDemo  
4.  //  
5.  //  Created by huangyibiao on 15/3/25.  
6.  //  Copyright (c) 2015年 huangyibiao. All rights reserved.  
7.  //  
8.    
9.  \#import <Foundation/Foundation.h>  
10.   
11. **@interface** NSTimer (Convenience)  
12.   
13. /\*\* 
14.  \*  无参数无返回值Block 
15.  \*/  
16. **typedef** **void** (^HYBVoidBlock)(**void**);  
17.   
18. /\*\* 
19.  \*  创建Timer---Block版本 
20.  \* 
21.  \*  @param interval 每隔interval秒就回调一次callback 
22.  \*  @param repeats  是否重复 
23.  \*  @param callback 回调block 
24.  \* 
25.  \*  @return NSTimer对象 
26.  \*/  
27. \+ (**NSTimer** \*)scheduledTimerWithTimeInterval:(NSTimeInterval)interval  
28.                                     repeats:(**BOOL**)repeats  
29.                                    callback:(HYBVoidBlock)callback;  
30.   
31. /\*\* 
32.  \*  创建Timer---Block版本 
33.  \* 
34.  \*  @param interval 每隔interval秒就回调一次callback 
35.  \*  @param count  回调多少次后自动暂停，如果count <= 0，则表示无限次，否则表示具体的次数 
36.  \*  @param callback 回调block 
37.  \* 
38.  \*  @return NSTimer对象 
39.  \*/  
40. \+ (**NSTimer** \*)scheduledTimerWithTimeInterval:(NSTimeInterval)interval  
41.                                     count:(NSInteger)count  
42.                                    callback:(HYBVoidBlock)callback;  
43.   
44. /\*\* 
45.  \*  开始启动定时器 
46.  \*/  
47. \- (**void**)fireTimer;  
48.   
49. /\*\* 
50.  \*  暂停定时器 
51.  \*/  
52. \- (**void**)unfireTimer;  
53.   
54.   
55. **@end**

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1.  //  
2.  //  NSTimer+Convenience.m  
3.  //  NSTimerBlockDemo  
4.  //  
5.  //  Created by huangyibiao on 15/3/25.  
6.  //  Copyright (c) 2015年 huangyibiao. All rights reserved.  
7.  //  
8.    
9.  \#import "NSTimer+Convenience.h"  
10.   
11. **@implementation** NSTimer (Convenience)  
12.   
13. \+ (**NSTimer** \*)scheduledTimerWithTimeInterval:(NSTimeInterval)interval  
14.                                     repeats:(**BOOL**)repeats  
15.                                    callback:(HYBVoidBlock)callback \{  
16.   **return** \[NSTimer scheduledTimerWithTimeInterval:interval  
17.                                           target:**self**  
18.                                         selector:**@selector**(onTimerUpdateBlock:)  
19.                                         userInfo:\[callback copy\]  
20.                                          repeats:repeats\];  
21. \}  
22.   
23. \+ (**NSTimer** \*)scheduledTimerWithTimeInterval:(NSTimeInterval)interval  
24.                                       count:(NSInteger)count  
25.                                    callback:(HYBVoidBlock)callback \{  
26.   **NSDictionary** \*userInfo = @\{ @"callback"     : \[callback copy\],  
27.                              @"count"        : @(count)\};  
28.   **return** \[NSTimer scheduledTimerWithTimeInterval:interval  
29.                                           target:**self**  
30.                                         selector:**@selector**(onTimerUpdateCountBlock:)  
31.                                         userInfo:userInfo  
32.                                          repeats:**YES**\];  
33. \}  
34.   
35. \+ (**void**)onTimerUpdateBlock:(**NSTimer** \*)timer \{  
36.   HYBVoidBlock block = timer.userInfo;  
37.     
38.   **if** (block) \{  
39.     block();  
40.   \}  
41. \}  
42.   
43. \+ (**void**)onTimerUpdateCountBlock:(**NSTimer** \*)timer \{  
44.   **static** NSUInteger currentCount = 0;  
45.     
46.   **NSDictionary** \*userInfo = timer.userInfo;  
47.   HYBVoidBlock callback = userInfo\[@"callback"\];  
48.   **NSNumber** \*count = userInfo\[@"count"\];  
49.     
50.   **if** (count.integerValue <= 0) \{  
51.     **if** (callback) \{  
52.       callback();  
53.     \}  
54.   \} **else** \{  
55.     **if** (currentCount < count.integerValue) \{  
56.       currentCount++;  
57.       **if** (callback) \{  
58.         callback();  
59.       \}  
60.     \} **else** \{  
61.       currentCount = 0;  
62.         
63.       \[timer unfireTimer\];  
64.     \}  
65.   \}  
66. \}  
67.   
68. \- (**void**)fireTimer \{  
69.   \[**self** setFireDate:\[NSDate distantPast\]\];  
70. \}  
71.   
72. \- (**void**)unfireTimer \{  
73.   \[**self** setFireDate:\[NSDate distantFuture\]\];  
74. \}  
75.   
76. **@end**

可以到github下载： [https://github.com/632840804/NSTimerBlockDemo][https_github.com_632840804_NSTimerBlockDemo]

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