java - 在Android设备上选择不同的语言选择导致日期解析错误

Question

当我运行我的应用程序时，选择的语言是英语，并且我的应用程序在 Android 手机上运行良好。现在，当我将手机语言更改为意大利语时，我的应用程序崩溃了。这是日期解析错误。应用程序在解析日期时崩溃。下面是错误代码和崩溃日志。

Date date = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("EE MMM dd HH:mm:ss z yyyy");
        try {
            **parsedDate = sdf.parse(date.toString());** //app crashes on this line
        } catch (ParseException e) {
            e.printStackTrace();
        }

错误

01-06 19:11:02.415 758-758/com.yapsody.yapstats W/System.err: java.text.ParseException: **Unparseable date: "Fri Jan 06 19:11:02 GMT+05:30 2017" (at offset 0)**
01-06 19:11:02.415 758-758/com.yapsody.yapstats W/System.err:     at java.text.DateFormat.parse(DateFormat.java:579)
01-06 19:11:02.415 758-758/com.yapsody.yapstats W/System.err:     at com.yapsody.yapstats.Activities.EventsActivity.onCreate(EventsActivity.java:169)
01-06 19:11:02.415 758-758/com.yapsody.yapstats W/System.err:     at android.app.Activity.performCreate(Activity.java:6251)
01-06 19:11:02.415 758-758/com.yapsody.yapstats W/System.err:     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1108)
01-06 19:11:02.415 758-758/com.yapsody.yapstats W/System.err:     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2403)
01-06 19:11:02.415 758-758/com.yapsody.yapstats W/System.err:     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2510)
01-06 19:11:02.415 758-758/com.yapsody.yapstats W/System.err:     at android.app.ActivityThread.-wrap11(ActivityThread.java)
01-06 19:11:02.415 758-758/com.yapsody.yapstats W/System.err:     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1363)
01-06 19:11:02.415 758-758/com.yapsody.yapstats W/System.err:     at android.os.Handler.dispatchMessage(Handler.java:102)
01-06 19:11:02.415 758-758/com.yapsody.yapstats W/System.err:     at android.os.Looper.loop(Looper.java:148)
01-06 19:11:02.416 758-758/com.yapsody.yapstats W/System.err:     at android.app.ActivityThread.main(ActivityThread.java:5461)
01-06 19:11:02.416 758-758/com.yapsody.yapstats W/System.err:     at java.lang.reflect.Method.invoke(Native Method)
01-06 19:11:02.416 758-758/com.yapsody.yapstats W/System.err:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
01-06 19:11:02.416 758-758/com.yapsody.yapstats W/System.err:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
01-06 19:11:02.416 758-758/com.yapsody.yapstats D/AndroidRuntime: Shutting down VM
01-06 19:11:03.385 758-758/com.yapsody.yapstats E/AndroidRuntime: FATAL EXCEPTION: main
                                                                  Process: com.yapsody.yapstats, PID: 758
                                                                  Theme: themes:{default=overlay:com.cyngn.hexo, iconPack:com.cyngn.hexo, fontPkg:com.cyngn.hexo, com.android.systemui=overlay:com.cyngn.hexo, com.android.systemui.navbar=overlay:com.cyngn.hexo}
                                                                  java.lang.RuntimeException: Unable to start activity ComponentInfo{com.yapsody.yapstats/com.yapsody.yapstats.Activities.EventsActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'long java.util.Date.getTime()' on a null object reference
                                                                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2450)
                                                                      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2510)
                                                                      at android.app.ActivityThread.-wrap11(ActivityThread.java)
                                                                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1363)
                                                                      at android.os.Handler.dispatchMessage(Handler.java:102)
                                                                      at android.os.Looper.loop(Looper.java:148)
                                                                      at android.app.ActivityThread.main(ActivityThread.java:5461)
                                                                      at java.lang.reflect.Method.invoke(Native Method)
                                                                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
                                                                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
                                                                   Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'long java.util.Date.getTime()' on a null object reference
                                                                      at java.util.Calendar.setTime(Calendar.java:1197)
                                                                      at java.text.SimpleDateFormat.formatImpl(SimpleDateFormat.java:527)
                                                                      at java.text.SimpleDateFormat.format(SimpleDateFormat.java:829)
                                                                      at java.text.DateFormat.format(DateFormat.java:314)
                                                                      at com.yapsody.yapstats.Activities.EventsActivity.onCreate(EventsActivity.java:175)
                                                                      at android.app.Activity.performCreate(Activity.java:6251)
                                                                      at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1108)
                                                                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2403)
                                                                      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2510) 
                                                                      at android.app.ActivityThread.-wrap11(ActivityThread.java) 
                                                                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1363) 
                                                                      at android.os.Handler.dispatchMessage(Handler.java:102) 
                                                                      at android.os.Looper.loop(Looper.java:148) 
                                                                      at android.app.ActivityThread.main(ActivityThread.java:5461) 
                                                                      at java.lang.reflect.Method.invoke(Native Method) 
                                                                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
                                                                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 

Answer 1

实际上我无法在其他帖子中发表评论。

我认为主要问题是 com.yapsody.yapstats.Activities.EventsActivity.onCreate(EventsActivity.java:175) 处的 NullPointerException

您可以编辑您的问题并向我们展示该代码吗？