query: Android Error [java.lang.NullPointerException: 'void android.support.v7.app.ActionBar.setDisplayHomeAsUpEnabled(boolean)' on a null object reference]
positive_passages.docid: 49
positive_passages.text: What is a NullPointerException, and how do I fix it?
negative_passages.docid: 128903
negative_passages.text: ExecuteScalar throws NullReferenceException
negative_passages.docid: 8950
negative_passages.text: how to setImage to null in android when the xml has src not null?
negative_passages.docid: 101146
negative_passages.text: Why can't I write Nullable>?
negative_passages.docid: 56098
negative_passages.text: NSInvalidUnarchiveOperationException: Could not instantiate class named NSLayoutConstraint
negative_passages.docid: 38191
negative_passages.text: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
negative_passages.docid: 88384
negative_passages.text: NoSuchMethodError error for getActionBar() (API-8)
negative_passages.docid: 55274
negative_passages.text: Java: Exception itself is null
negative_passages.docid: 57327
negative_passages.text: BaseAdapter class wont setAdapter inside Asynctask - Android
negative_passages.docid: 103797
negative_passages.text: Android:android.view.ViewRoot$CalledFromWrongThreadException - How to solve the problem?
negative_passages.docid: 140738
negative_passages.text: Does setting Java objects to null do anything anymore?
negative_passages.docid: 44087
negative_passages.text: ArrayAdapter requires ID to be a TextView error
negative_passages.docid: 119573
negative_passages.text: NullPointerException in Java with no StackTrace
negative_passages.docid: 32065
negative_passages.text: Attempt to de-reference a null object: Trigger
negative_passages.docid: 144908
negative_passages.text: android java.io.IOException: Service not Available
negative_passages.docid: 29271
negative_passages.text: *.xhtml url-pattern causes java.lang.NullPointerException at com.sun.faces.context.flash.ELFlash.loggingGetPhaseMapForReading
negative_passages.docid: 3984
negative_passages.text: How to fix 'android.os.NetworkOnMainThreadException'?