java.lang.RuntimeException

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    • java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.ribo_b.home/com.example.ribo_b.home.MainPage}: java.lang.NullPointerException at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2544) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2603) at android.app.ActivityThread.access$900(ActivityThread.java:174) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:146) at android.app.ActivityThread.main(ActivityThread.java:5752) 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:1291) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1107) at dalvik.system.NativeStart.main(Native Method) Caused by: java.lang.NullPointerException at android.widget.Toast.<init>(Toast.java:120) at android.widget.Toast.makeText(Toast.java:287) at com.example.ribo_b.home.MainPage.onCreate(MainPage.java:14) at android.app.Activity.performCreate(Activity.java:5600) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1093) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2508) ... 11 more

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