What can I do to get my app to launch?
It has the Icon on the device screen but as soon as I try to open it, it displays a message saying the app has stopped working. I am using Android Studio. Below is a copy of the Android Monitor message it displays when I try to open the app.
11-25 16:56:49.724 25383-25383/com.firstapp.colton.myfirstapp E/AndroidRuntime: FATAL EXCEPTION: main Process: com.firstapp.colton.myfirstapp, PID: 25383 java.lang.RuntimeException: Unable to start activity ComponentInfo{com.firstapp.colton.myfirstapp/com.firstapp.colton.myfirstapp.MainActivity}: java.lang.NullPointerException at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2334) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2392) at android.app.ActivityThread.access$900(ActivityThread.java:169) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1280) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:146) at android.app.ActivityThread.main(ActivityThread.java:5487) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:515) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1283) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1099) at dalvik.system.NativeStart.main(Native Method) Caused by: java.lang.NullPointerException at com.firstapp.colton.myfirstapp.MainActivity.onCreate(MainActivity.java:22) at android.app.Activity.performCreate(Activity.java:5451) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1093) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2298) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2392) at android.app.ActivityThread.access$900(ActivityThread.java:169) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1280) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:146) at android.app.ActivityThread.main(ActivityThread.java:5487) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:515) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1283) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1099) at dalvik.system.NativeStart.main(Native Method)
