提问人:Jekis Osipov 提问时间:5/1/2023 最后编辑:AnonymousJekis Osipov 更新时间:5/23/2023 访问量:276
获取两次之间的周期
Get period between two times
问:
我有两个字符串时间。我怎样才能获得两个时间之间的持续时间? 我尝试使用 DateTimeFormatter,但它不起作用。
val startTime = LocalDate.parse("19:30", DateTimeFormatter.ofPattern("HH:mm"))
val endTime = LocalDate.parse("20:30", DateTimeFormatter.ofPattern("HH:mm"))
val newDate = Period.between(startTime, endTime)
我认为它需要将两个日期都转换为 millis,然后进行减法。但我不明白该怎么做!请问你的建议?!
错误信息:
进程:com.example.leetcodedraft,PID:23723
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.leetcodedraft/com.example.leetcodedraft.MainActivity}: java.time.format.DateTimeParseException: Text '19:30' could not be parsed: Unable to obtain LocalDate from TemporalAccessor: {},ISO resolved to 19:30 of type java.time.format.Parsed
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2913)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
Caused by: java.time.format.DateTimeParseException: Text '19:30' could not be parsed: Unable to obtain LocalDate from TemporalAccessor: {},ISO resolved to 19:30 of type java.time.format.Parsed
at java.time.format.DateTimeFormatter.createError(DateTimeFormatter.java:1920)
at java.time.format.DateTimeFormatter.parse(DateTimeFormatter.java:1855)
at java.time.LocalDate.parse(LocalDate.java:394)
at com.example.leetcodedraft.Test.startTest(Test.kt:16)
at com.example.leetcodedraft.MainActivity.onCreate(MainActivity.kt:36)
at android.app.Activity.performCreate(Activity.java:7136)
at android.app.Activity.performCreate(Activity.java:7127)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2893)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
Caused by: java.time.DateTimeException: Unable to obtain LocalDate from TemporalAccessor: {},ISO resolved to 19:30 of type java.time.format.Parsed
at java.time.LocalDate.from(LocalDate.java:362)
at java.time.-$$Lambda$Bq8PKq1YWr8nyVk9SSfRYKrOu4A.queryFrom(Unknown Source:0)
at java.time.format.Parsed.query(Parsed.java:226)
at java.time.format.DateTimeFormatter.parse(DateTimeFormatter.java:1851)
at java.time.LocalDate.parse(LocalDate.java:394)
at com.example.leetcodedraft.Test.startTest(Test.kt:16)
at com.example.leetcodedraft.MainActivity.onCreate(MainActivity.kt:36)
at android.app.Activity.performCreate(Activity.java:7136)
at android.app.Activity.performCreate(Activity.java:7127)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2893)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
答:
2赞
Jekis Osipov
5/6/2023
#1
一段时间后,我接下来解决了这个问题:
@RequiresApi(Build.VERSION_CODES.O)
private fun setLessonDuration(startTime: String, endTime: String): String {
val start = LocalTime.parse(startTime)
val finish = LocalTime.parse(endTime)
val newDate = Duration.between(start, finish).toKotlinDuration()
var time = if (newDate.inWholeMinutes.toInt() > 60) {
"${newDate.inWholeMinutes.toInt() / 60}ч.${newDate.inWholeMinutes.toInt() - 60}мин."
} else if (newDate.inWholeMinutes.toInt()%60 == 0) {
"${newDate.inWholeHours}ч."
} else "${newDate.inWholeMinutes}мин."
return time
}
接收数据示例:“1ч.45мин., ”2ч.“, ”15мин.”
与问题中的原始代码相比,更改包括:
- 我用 代替 .因为 a 是没有时间的日期,而是一天中没有日期的时间。
LocalTime
LocalDate
LocalDate
LocalTime
- 我使用 Kotlin 而不是 Java 。 表示年、月和日,而表示小时、分钟、秒和秒的分数,而 Kotlin 的功能比 java.time 中的功能多一点,并且命名更好。
Duration
Period
Period
Duration
Duration
inWholeMinutes
评论
LocalDateTime
LocalDate
Duration.between(LocalTime.parse("19:30"), LocalTime.parse("20:30"))
Duration
LocalTime
Duration
Instant
ZoneId