如何解释Logcat

Question

谁能告诉我如何读取Logcat中的错误？我想了解我的问题在哪里。此刻，我试图阅读它，但找不到崩溃的原因。这是我不明白的Logcat：05-18 18:29:44.160: ERROR/AndroidRuntime(2145): FATAL EXCEPTION: main05-18 18:29:44.160: ERROR/AndroidRuntime(2145): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.paad.whereami/com.paad.whereami.WhereAmI}: java.lang.NullPointerException05-18 18:29:44.160: ERROR/AndroidRuntime(2145):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)05-18 18:29:44.160: ERROR/AndroidRuntime(2145):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)05-18 18:29:44.160: ERROR/AndroidRuntime(2145):     at android.app.ActivityThread.access$1500(ActivityThread.java:117)05-18 18:29:44.160: ERROR/AndroidRuntime(2145):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)05-18 18:29:44.160: ERROR/AndroidRuntime(2145):     at android.os.Handler.dispatchMessage(Handler.java:99)05-18 18:29:44.160: ERROR/AndroidRuntime(2145):     at android.os.Looper.loop(Looper.java:130)05-18 18:29:44.160: ERROR/AndroidRuntime(2145):     at android.app.ActivityThread.main(ActivityThread.java:3683)05-18 18:29:44.160: ERROR/AndroidRuntime(2145):     at java.lang.reflect.Method.invokeNative(Native Method)05-18 18:29:44.160: ERROR/AndroidRuntime(2145):     at java.lang.reflect.Method.invoke(Method.java:507)05-18 18:29:44.160: ERROR/AndroidRuntime(2145):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)05-18 18:29:44.160: ERROR/AndroidRuntime(2145):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)05-18 18:29:44.160: ERROR/AndroidRuntime(2145):     at dalvik.system.NativeStart.main(Native Method)05-18 18:29:44.160: ERROR/AndroidRuntime(2145): Caused by: java.lang.NullPointerException05-18 18:29:44.160: ERROR/AndroidRuntime(2145):     at com.paad.whereami.WhereAmI.updateWithNewLocation(WhereAmI.java:290