java - Android 将字符串解析为日期 - 未知模式字符 'X'

Question

我有 Service 从 web 获取日期字符串，然后我想将其削减为 Date 对象。但不知何故，应用程序崩溃了。 这是我正在解析的字符串:2015-02-05T05:20:02+00:00

onStartCommand()

String datetime = "2015-02-05T05:20:02+00:00";
Date new_date = stringToDate(datetime);

stringToDate()

private Date stringToDate(String s){
    DateFormat df = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssXXX");
    try{
        return df.parse(s);
    }catch(ParseException e){
        e.printStackTrace();
    }
    return null;
}

LogCat:

02-06 20:37:02.008: E/AndroidRuntime(28565): FATAL EXCEPTION: main
02-06 20:37:02.008: E/AndroidRuntime(28565): Process: com.dotmav.runescapenotifier, PID: 28565
02-06 20:37:02.008: E/AndroidRuntime(28565): java.lang.RuntimeException: Unable to start service com.dotmav.runescapenotifier.GEService@384655b5 with Intent { cmp=com.dotmav.runescapenotifier/.GEService }: java.lang.IllegalArgumentException: Unknown pattern character 'X'
02-06 20:37:02.008: E/AndroidRuntime(28565):    at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2881)
02-06 20:37:02.008: E/AndroidRuntime(28565):    at android.app.ActivityThread.access$2100(ActivityThread.java:144)
02-06 20:37:02.008: E/AndroidRuntime(28565):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1376)
02-06 20:37:02.008: E/AndroidRuntime(28565):    at android.os.Handler.dispatchMessage(Handler.java:102)
02-06 20:37:02.008: E/AndroidRuntime(28565):    at android.os.Looper.loop(Looper.java:135)
02-06 20:37:02.008: E/AndroidRuntime(28565):    at android.app.ActivityThread.main(ActivityThread.java:5221)
02-06 20:37:02.008: E/AndroidRuntime(28565):    at java.lang.reflect.Method.invoke(Native Method)
02-06 20:37:02.008: E/AndroidRuntime(28565):    at java.lang.reflect.Method.invoke(Method.java:372)
02-06 20:37:02.008: E/AndroidRuntime(28565):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
02-06 20:37:02.008: E/AndroidRuntime(28565):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
02-06 20:37:02.008: E/AndroidRuntime(28565): Caused by: java.lang.IllegalArgumentException: Unknown pattern character 'X'
02-06 20:37:02.008: E/AndroidRuntime(28565):    at java.text.SimpleDateFormat.validatePatternCharacter(SimpleDateFormat.java:314)
02-06 20:37:02.008: E/AndroidRuntime(28565):    at java.text.SimpleDateFormat.validatePattern(SimpleDateFormat.java:303)
02-06 20:37:02.008: E/AndroidRuntime(28565):    at java.text.SimpleDateFormat.<init>(SimpleDateFormat.java:356)
02-06 20:37:02.008: E/AndroidRuntime(28565):    at java.text.SimpleDateFormat.<init>(SimpleDateFormat.java:249)
02-06 20:37:02.008: E/AndroidRuntime(28565):    at com.dotmav.runescapenotifier.GEService.stringToDate(GEService.java:68)
02-06 20:37:02.008: E/AndroidRuntime(28565):    at com.dotmav.runescapenotifier.GEService.onStartCommand(GEService.java:44)
02-06 20:37:02.008: E/AndroidRuntime(28565):    at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2864)
02-06 20:37:02.008: E/AndroidRuntime(28565):    ... 9 more

编辑: onDestroy() 设置定期更新警报...

AlarmManager alarm = (AlarmManager)getSystemService(ALARM_SERVICE);
alarm.set(
    AlarmManager.RTC_WAKEUP,
    System.currentTimeMillis() + (1000 * 60),
    PendingIntent.getService(this, 0, new Intent(this, GEService.class), 0)
);

Answer 1

SimpleDateFormat 的 Android 版本不支持 X 模式，因此 XXX 不起作用，但您可以使用 ZZZZZ 执行相同的操作并以 +02:00 格式(或 -02:00 取决于本地时区)输出时区。