aischool 倒计时VIEW封装
2016-09-28 10:46 xiangjune 阅读(398) 评论(0) 编辑 收藏 举报
@implementation TWPaperTimeCountLabel
{
NSInteger miaoshu;
dispatch_source_t _timer;
}
-(id)initWithframe:(CGRect)frame endTime:(NSDate *)endtime delegate:(id<TWPaperTimelabelDelegate>)delegate
{
self = [super initWithFrame:frame];
if (self) {
self.delegate = delegate;
[self setcontentWith:endtime];
}
return self;
}
-(id)initWithframe:(CGRect)frame endTimeStr:(NSString *)endtimestr delegate:(id<TWPaperTimelabelDelegate>)delegate
{
self = [super initWithFrame:frame];
if (self) {
self.delegate = delegate;
if (endtimestr!=nil && [endtimestr isKindOfClass:[NSString class]]) {
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
NSDate *destDate= [dateFormatter dateFromString:endtimestr];
[self setcontentWith:destDate];
}
}
return self;
}
-(void)reloadTime:(NSString *)endtimestr
{
if (endtimestr!=nil && [endtimestr isKindOfClass:[NSString class]]) {
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
NSDate *destDate= [dateFormatter dateFromString:endtimestr];
[self setcontentWith:destDate];
}
}
-(void)setcontentWith:(NSDate *)data
{
NSDate *now = [NSDate new];
NSCalendar *cal = [NSCalendar currentCalendar];
unsigned int unitFlags = NSCalendarUnitDay | NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitSecond;
NSDateComponents *d = [cal components:unitFlags fromDate:now toDate:data options:0];
NSInteger alltime = [d day]*3600*24+[d hour]*3600+[d minute]*60+[d second];
if(alltime>0)
{
[self GCDtimeresume:alltime];
}else
{
if (self.delegate!=nil && [self.delegate respondsToSelector:@selector(paperCountdownIsOver:)]) {
[self.delegate paperCountdownIsOver:self];
}
}
}
-(void)GCDtimeresume:(NSInteger)alltimeSecond
{
__block NSInteger timeout=alltimeSecond; //倒计时时间
dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
_timer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0,queue);
dispatch_source_set_timer(_timer,dispatch_walltime(NULL, 0),1.0*NSEC_PER_SEC, 0); //每秒执行
WEAKSELF;
dispatch_source_set_event_handler(_timer, ^{
if(weakSelf == nil)
{
dispatch_source_cancel(_timer);
}
if(timeout<=0){ //倒计时结束，关闭
dispatch_source_cancel(_timer);
dispatch_async(dispatch_get_main_queue(), ^{
if (weakSelf.delegate!=nil && [weakSelf.delegate respondsToSelector:@selector(paperCountdownIsOver:)]) {
[weakSelf.delegate paperCountdownIsOver:weakSelf];
}
});
}else{
[weakSelf setlabel:timeout];
timeout--;
}
});
dispatch_resume(_timer);
}
-(void)stopcount
{
if(_timer)
{
dispatch_source_cancel(_timer);
}
}
-(void)setlabel:(NSInteger)alltimeSecond
{
NSString *content =@"倒计时: ";
NSInteger seconds = alltimeSecond % 60;
NSInteger minutes = (alltimeSecond / 60) % 60;
NSInteger hours = alltimeSecond / 3600;
if (hours>0) {
content =[content stringByAppendingString:[NSString stringWithFormat:@"%ld小时",(long)hours]];
}
if (minutes>0) {
content =[content stringByAppendingString:[NSString stringWithFormat:@"%ld分",(long)minutes]];
}
if (seconds>0) {
content =[content stringByAppendingString:[NSString stringWithFormat:@"%ld秒",(long)seconds]];
}
dispatch_async(dispatch_get_main_queue(), ^{
self.text = content;
});
}
