Get time and get time interval under iOS
Last Update:2015-07-10
Source: Internet
Author: User
<span id="Label3"></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo"><span style="color:#703daa">-－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－</span></p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo"><span style="color:#703daa">1, Gets the current time</span></p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px"><p style="margin-top:0px; margin-bottom:0px; font-size:14px"><span style="color:rgb(112,61,170)"><span style="font-family:Menlo; color:rgb(0,132,0); font-size:14px">//</span> <span style="color:rgb(0,132,0); font-size:14px"> <span style="font-family:Heiti SC Light">Get system Current time</span></span></span></p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px"><p style="margin-top:0px; margin-bottom:0px; font-size:14px"><span style="color:rgb (112,61,170)"><span style=" Color:rgb (0,132,0); font-size:14px "><span style=" font-family:heiti SC light "><span style=" white-space:pre "><span style=" font-family : Menlo; font-size:14px; Color:rgb (112,61,170) ">nsdate </span> <span style=" font-family:menlo; font-size:14px "><span style=" font-family: Menlo; font-size:14px ">*<span style=" font-family:menlo; font-size:14px ">currentdate </span> </span> = [</span> <span style="font-family:menlo; font-size:14px; Color:rgb (112,61,170) ">nsdate </span> <span style=" font-family:menlo; font-size:14px; color:rgb (61,29,129) ">date </span> <span style="font-family:menlo; font-size:14px">]; </span> </span> </span> </span> </span> </p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px"><p style="margin-top:0px; margin-bottom:0px; font-size:14px"><span style="font-family:Menlo; color:rgb(112,61,170)">NSDateFormatter</span> <span style="font-family:Menlo">*dateformatter=[[</span><span style="font-family:Menlo; color:rgb(112,61,170)">nsdateformatter </span> <span style="font-family:Menlo; color:rgb(61,29,129)">alloc</span><span style="font-family:Menlo">] </span> <span style="font-family:Menlo; color:rgb(61,29,129)">init</span><span style="font-family:Menlo">];</span></p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo">[dateformatter <span style="color:#3d1d81">setdateformat</span>:<span style="color:#d12f1b">@ "YYYYMMdd"</span>];</p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo"><span style="color:#703daa">nsstring</span> *currentstring=[dateformatter <span style="color:#3d1d81">stringfromdate</span>: currentdate];</p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo; color:rgb(209,47,27)"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo; color:rgb(209,47,27)"><span style="color:rgb(0,0,0)"> </span> <span style="color:#3d1d81">NSLog</span><span style="color:#000000">(</span>@ "currentstring:----------->%@"<span style="color:#000000">, currentstring);</span></p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo; color:rgb(209,47,27)"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo; color:rgb(209,47,27)"><span style="color:rgb(112,61,170); font-family:Menlo; font-size:14px">2, get the date after a certain interval of time</span><br></p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo; color:rgb(209,47,27)"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo; color:rgb(209,47,27)"><span style="color:#000000"></span></p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:‘Heiti SC Light‘; color:rgb(0,132,0)"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:‘Heiti SC Light‘; color:rgb(0,132,0)"><span style="font-family:Menlo">//</span> Date after a certain interval</p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo"><span style="color:#703daa">nsdate </span>*date = [<span style="color:#703daa">nsdate</span><span style="color:#3d1d81">date</span>];</p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo">Date = [date<span style="color:#3d1d81">datebyaddingtimeinterval</span>:-<span style="color:#272ad8">5</span>*<span style="color:#272ad8">3600</span>*<span style="color:#272ad8"></span>];</p></p><br><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo; color:rgb(209,47,27)"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo; color:rgb(209,47,27)"><span style="color:#000000"><span style="color:rgb(112,61,170); font-family:Menlo; font-size:14px">3, get two time intervals, calculate two time intervals</span></span></p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo; color:rgb(209,47,27)"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo; color:rgb(209,47,27)"><span style="color:#000000"><span style="color:rgb(112,61,170); font-family:Menlo; font-size:14px"><span style="white-space:pre"></span></span></span></p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:‘Heiti SC Light‘; color:rgb(0,132,0)"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:‘Heiti SC Light‘; color:rgb(0,132,0)">//create date format object <span style="font-family:Menlo"> <span style="white-space:pre"></span> <span style="white-space:pre"></span> </span></p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo"><span style="color:#703daa">nsdateformatter</span> *dateformatter=[[<span style="color:#703daa">nsdateformatter </span> <span style="color:#3d1d81">alloc</span>] <span style="color:#3d1d81">init</span>];</p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo">[dateformatter <span style="color:#3d1d81">setdateformat</span>:<span style="color:#d12f1b">@ "yyyy-mm-dd hh:mm"</span>];</p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo; min-height:16px"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo; min-height:16px"></p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo; color:rgb(0,132,0)"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo; color:rgb(0,132,0)"><span style="color:#000000"> </span>// <span style="font-family:‘Heiti SC Light‘">created two date objects</span></p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo"><span style="color:#703daa">nsdate</span> *date1=[dateformatter <span style="color:#3d1d81">datefromstring</span>:<span style="color:#d12f1b">@ "2010-3-3-11:00am"</span>];</p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo"><span style="color:#703daa">nsdate</span> *date2=[dateformatter <span style="color:#3d1d81">datefromstring</span>:<span style="color:#d12f1b">@ "2010-3-4"</span>];</p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo; color:rgb(0,132,0)"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo; color:rgb(0,132,0)"><span style="color:#000000"> </span>//nsdate *date=[nsdate date];</p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo; color:rgb(0,132,0)"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo; color:rgb(0,132,0)"><span style="color:#000000"> </span>//nsstring *curdate=[dateformatter stringfromdate:date];</p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo; min-height:16px"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo; min-height:16px"></p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:‘Heiti SC Light‘; color:rgb(0,132,0)"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:‘Heiti SC Light‘; color:rgb(0,132,0)"><span style="font-family:Menlo; color:rgb(0,0,0)"> </span> <span style="font-family:Menlo">//</span> Take two date objects at a time interval:</p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo; color:rgb(0,132,0)"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo; color:rgb(0,132,0)"><span style="color:#000000"> </span>// <span style="font-family:‘Heiti SC Light‘">The nstimeinterval here</span> is <span style="font-family:‘Heiti SC Light‘">not an object, is a basic type, in fact a</span> double <span style="font-family:‘Heiti SC Light‘">type, is</span> <span style="font-family:‘Heiti SC Light‘">defined</span> by C: typedef double nstimeinterval;</p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo"><span style="color:#703daa">nstimeinterval</span> time=[date2 <span style="color:#3d1d81">timeintervalsincedate</span>:d ate1];</p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo; min-height:16px"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo; min-height:16px"></p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo"><span style="color:#bb2ca2">int</span> days= ((<span style="color:#bb2ca2">int</span>) time)/(<span style="color:#272ad8">3600</span>*<span style="color:#272ad8"></span>);</p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo"><span style="color:#bb2ca2">int</span> hours= ((<span style="color:#bb2ca2">int</span>) time)% (<span style="color:#272ad8">3600</span>*<span style="color:#272ad8"></span>)/<span style="color:#272ad8">3600</span>;</p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo"><span style="color:#703daa">nsstring</span> *datecontent=[[<span style="color:#703daa">nsstring </span> <span style="color:#3d1d81">alloc</span>] <span style="color:#3d1d81">initwithformat</span>:<span style="color:#d12f1b">@ "%i</span> <span style="font-family:‘Heiti SC Light‘; color:rgb(209,47,27)">Day </span> <span style="color:#d12f1b">%i</span> <span style="font-family:‘Heiti SC Light‘; color:rgb(209,47,27)">hours</span> <span style="color:#d12f1b">"</span>, days,hours];</p></p><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo; color:rgb(209,47,27)"><p style="margin-top:0px; margin-bottom:0px; font-size:14px; font-family:Menlo; color:rgb(209,47,27)"><span style="color:#000000"><span style="color:rgb(112,61,170); font-family:Menlo; font-size:14px"><span style="white-space:pre"></span></span></span></p></p> <p style="font-size:12px;"><p style="font-size:12px;">Copyright Notice: This article for Bo Master original article, without Bo Master permission not Reproduced.</p></p> <p><p>Get time and get time interval under iOS</p></p></span>
