Nstimer to dismiss a circular reference

Nstimer as a common class, but there is one of the biggest disadvantage, is that it will be strong reference to target, causing the call timer is very troublesome, a little careless to cause a memory leak.

The following is a package for solving this problem.

Directly on the code:

#import <Foundation/Foundation.h>

@interface Lzltimer: NSObject

-(void) Starttimerinterval: ( Nstimeinterval ) ti target:atarget selector: (SEL) selector userInfo: (ID) userInfo repeats: ( BOOL) Yesorno;

@end

#import "LZLTimer.h"

@interface Lzlweaktimertarget: NSObject

@property (nonatomic,weak) ID Target;

@property (nonatomic,assign) SEL selector;

-(void) Timerdidfire: ( Nstimer *) timer;

@end

@implementation Lzlweaktimertarget

-(void) Timerdidfire: ( Nstimer *) Timer {

if(_target) {

// eliminate arc warning

imp imp = [_targetmethodforselector:_selector< /c7>];

if ([nsstringfromselector(_selector) Hassuffix : @":" ]) {

void (*func) (ID,SEL, ID) = ( C9>void *) imp;

func (_target,_selector, timer);

}else {

void (*func) (ID,SEL) = (void *) imp ;

func (_target,_selector);

}

} else {

[Timer invalidate];

}

}

@end

@interface LZL Timer () {

nstimer *_timer;

}

@end

@implementation Lzltimer

-(void) dealloc {

if (_timer!=nil) {

[_timerinvalidate];

_timer =nil;

}

}

-(void) Starttimerinterval: ( Nstimeinterval ) ti target:atarget selector: (SEL) selector userInfo: (ID) userInfo repeats: ( BOOL) Yesorno {

if (nil = =_timer) {

wmweaktimertarget *weaktarget = [[wmweaktimertargetal Loc] init];

Weaktarget. Target = Atarget;

Weaktarget. selector = selector;

_timer = [nstimer scheduledtimerwithtimeinterval : Titarget: weaktarget selector:@selector( Timerdidfire:)userInfo: UserInfo repeats: Yesorno];

}

}

@end

Nstimer to dismiss a circular reference