12-04 21:29:17.425 7787-7787/com.northcityproductions.androidiosapptransfertest1 E/AndroidRuntime: FATAL EXCEPTION: main
                                                                                                   Process: com.northcityproductions.androidiosapptransfertest1, PID: 7787
                                                                                                   java.lang.RuntimeException: Unable to start activity ComponentInfo{com.northcityproductions.androidiosapptransfertest1/com.northcityproductions.androidiosapptransfertest1.MainActivity}: java.lang.NullPointerException: Attempt to invoke interface method 'int java.lang.CharSequence.length()' on a null object reference
                                                                                                       at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2456)
                                                                                                       at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2539)
                                                                                                       at android.app.ActivityThread.access$900(ActivityThread.java:159)
                                                                                                       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1384)
                                                                                                       at android.os.Handler.dispatchMessage(Handler.java:102)
                                                                                                       at android.os.Looper.loop(Looper.java:152)
                                                                                                       at android.app.ActivityThread.main(ActivityThread.java:5507)
                                                                                                       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 interface method 'int java.lang.CharSequence.length()' on a null object reference
                                                                                                       at android.widget.TextView.append(TextView.java:3920)
                                                                                                       at com.northcityproductions.androidiosapptransfertest1.MainActivity.onCreate(MainActivity.java:36)
                                                                                                       at android.app.Activity.performCreate(Activity.java:6300)
                                                                                                       at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
                                                                                                       at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2409)
                                                                                                       at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2539)
                                                                                                       at android.app.ActivityThread.access$900(ActivityThread.java:159)
                                                                                                       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1384)
                                                                                                       at android.os.Handler.dispatchMessage(Handler.java:102)
                                                                                                       at android.os.Looper.loop(Looper.java:152)
                                                                                                       at android.app.ActivityThread.main(ActivityThread.java:5507)
                                                                                                       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)
12-04 21:29:17.427 7787-7787/com.northcityproductions.androidiosapptransfertest1 D/AppTracker: App Event: crash
12-04 21:29:17.486 7787-7787/com.northcityproductions.androidiosapptransfertest1 I/Process: Sending signal. PID: 7787 SIG: 9