Question

如何为日期选择器添加时区？
这是我现在的代码：输出格式：像这样2018-04-10T04：24：24.443980 + 08:00

@available(iOS 11.0, *)
    func donePressed() {
        let formatter = ISO8601DateFormatter()
        if #available(iOS 11.0, *) {
            formatter.formatOptions.insert(.withFractionalSeconds)
        } else {
            // Fallback on earlier versions
        }
        let dateString = formatter.string(from: picker.date)
        choreSchedule.text =  "\(dateString)"
    }

Answer 1

假设您只是尝试从用户的系统设置时区，您可以在设置UIDatePicker时使用TimeZone.current属性（或选择您选择的时区）：

let picker = UIDatePicker()
picker.timeZone = .current

或者如果你有一个可变的时区：

func donePressed(timeZone: TimeZone) {
    let formatter = ISO8601DateFormatter()
    if #available(iOS 11.0, *) {
        formatter.formatOptions.insert(.withFractionalSeconds)
    } else {
        // Fallback on earlier versions
    }
    picker.timeZone = timeZone
    let dateString = formatter.string(from: picker.date)
    choreSchedule.text =  "\(dateString)"
}

Answer 2

Testing started at 6:24 PM ... 04/09 18:24:17: Launching CoordinatorActivityT... $ adb push /Users/plentz/Projects/example/android/main/build/outputs/apk/debug/main-debug.apk /data/local/tmp/foo.example pkg: /data/local/tmp/foo.example Success $ adb push /Users/plentz/Projects/example/android/main/build/outputs/apk/androidTest/debug/main-debug-androidTest.apk /data/local/tmp/foo.example.test $ adb shell pm install -t -r "/data/local/tmp/foo.example.test" pkg: /data/local/tmp/foo.example.test Success Running tests $ adb shell am instrument -w -r -e debug false -e class 'foo.example.ui.activity.CoordinatorActivityTest' foo.example.test/android.support.test.runner.AndroidJUnitRunner Client not ready yet.. Started running tests java.lang.NoClassDefFoundError: android.support.test.espresso.base.BaseLayerModule_ProvideFailureHanderFactory at android.support.test.espresso.DaggerBaseLayerComponent.initialize(DaggerBaseLayerComponent.java:66) at android.support.test.espresso.DaggerBaseLayerComponent.<init>(DaggerBaseLayerComponent.java:54) at android.support.test.espresso.DaggerBaseLayerComponent.<init>(DaggerBaseLayerComponent.java:40) at android.support.test.espresso.DaggerBaseLayerComponent$Builder.build(DaggerBaseLayerComponent.java:123) at android.support.test.espresso.DaggerBaseLayerComponent.create(DaggerBaseLayerComponent.java:62) at android.support.test.espresso.GraphHolder.baseLayer(GraphHolder.java:42) at android.support.test.espresso.Espresso.<clinit>(Espresso.java:51) at foo.example.ui.activity.CoordinatorActivityTest.coordinatorActivityTest(CoordinatorActivityTest.java:37) at java.lang.reflect.Method.invoke(Native Method) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at android.support.test.internal.statement.UiThreadStatement.evaluate(UiThreadStatement.java:55) at android.support.test.rule.ActivityTestRule$ActivityStatement.evaluate(ActivityTestRule.java:270) at org.junit.rules.RunRules.evaluate(RunRules.java:20) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at org.junit.runners.ParentRunner.run(ParentRunner.java:363) at org.junit.runners.Suite.runChild(Suite.java:128) at org.junit.runners.Suite.runChild(Suite.java:27) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at org.junit.runners.ParentRunner.run(ParentRunner.java:363) at org.junit.runner.JUnitCore.run(JUnitCore.java:137) at org.junit.runner.JUnitCore.run(JUnitCore.java:115) at android.support.test.internal.runner.TestExecutor.execute(TestExecutor.java:59) at android.support.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:262) at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1879) Tests ran to completion.对我不起作用

picker.timeZone = .current。

对于给定的问题：

formatter.timeZone = .current

此外，要设置其他时区，您可以将func donePressed() { let formatter = ISO8601DateFormatter() formatter.timeZone = .current if #available(iOS 11.0, *) { formatter.formatOptions.insert(.withFractionalSeconds) } else { // Fallback on earlier versions } let dateString = formatter.string(from: picker.date) choreSchedule.text = "\(dateString)" }替换为formatter.timeZone = .current

标识符“EST”是特定时区的缩写。有关可用时区列表，您可以尝试：

formatter.timeZone = TimeZone(identifier: "EST")

添加时区到日期选择器

2 个答案: