Iphone 保存执行事件时的当前时间
在我的应用程序中,我使用zbar sdk扫描票证,我想在相机拍照时将当前时间保存在sqlite中。我怎样才能做到这一点。Iphone 保存执行事件时的当前时间,iphone,time,zbar-sdk,Iphone,Time,Zbar Sdk,在我的应用程序中,我使用zbar sdk扫描票证,我想在相机拍照时将当前时间保存在sqlite中。我怎样才能做到这一点。 提前感谢。以下代码用于获取设备的本地当前时间 NSDate* sourceDate = [NSDate date]; NSTimeZone* sourceTimeZone = [NSTimeZone timeZoneWithAbbreviation:@"GMT"]; NSTimeZone* destinationTimeZone = [NSTimeZone
提前感谢。以下代码用于获取设备的本地当前时间
NSDate* sourceDate = [NSDate date];
NSTimeZone* sourceTimeZone = [NSTimeZone timeZoneWithAbbreviation:@"GMT"];
NSTimeZone* destinationTimeZone = [NSTimeZone systemTimeZone];
NSInteger sourceGMTOffset = [sourceTimeZone secondsFromGMTForDate:sourceDate];
NSInteger destinationGMTOffset = [destinationTimeZone secondsFromGMTForDate:sourceDate];
NSTimeInterval interval = destinationGMTOffset - sourceGMTOffset;
NSDate* destinationDate = [[[NSDate alloc] initWithTimeInterval:interval sinceDate:sourceDate] autorelease];
希望这对编码有很大帮助您可以这样写:
NSDate *currentTime = [NSDate date];
然后,如果需要,您可以使用
NSDateComponents
或NSDateFormatter
从NSDate对象中提取适当的值。当您在ZBarReaderController上单击“保存”时,下面的方法称为
- (void) imagePickerController: (UIImagePickerController*) reader didFinishPickingMediaWithInfo: (NSDictionary*) info
{
NSDate *currentDateandTime = [NSDate date];
/// and save this date and time in your database
////with date formate see bellow my edited answer
/// this for get string from date with formate
NSDateFormatter* dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"EEE, dd-MM-yyyy hh:mm:ss a"];
NSString *dateString = [dateFormatter stringFromDate:[NSDate date]];
NSLog(dateString);
/// for get date from string with different formate use bellow code
NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
[dateFormatter setDateFormat:@"EEE, d MMM yyyy HH:mm:ss z"];
NSDate *date = [dateFormatter dateFromString: dateString];
}
另外,有关NSDate的更多详细信息,请参阅我在下面链接上的博客
我希望这能帮助你
:)