java.lang.RuntimeException: Unable to start activity ComponentInfo{com.ummahtalk.social/com.ummahtalk.social.gcm.activity.LoginActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'com.ummahtalk.social.gcm.helper.MyPreferenceManager com.ummahtalk.social.gcm.app.MyApplication.getPrefManager()' on a null object reference

Stack Overflow | user3693698 | 1 month ago
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  1. 0

    Getting this error

    Stack Overflow | 1 month ago | user3693698
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.ummahtalk.social/com.ummahtalk.social.gcm.activity.LoginActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'com.ummahtalk.social.gcm.helper.MyPreferenceManager com.ummahtalk.social.gcm.app.MyApplication.getPrefManager()' on a null object reference
  2. 0

    App crashing on clicking notification

    Stack Overflow | 9 months ago | user3176634
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.package/com.package.gcm.NotificationActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String com.package.gcm.NotificationData.getAction()' on a null object reference at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3124)
  3. 0

    Some problems with android listview

    Stack Overflow | 6 months ago | 吴环宇
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.mrdreamer.iknow/com.example.mrdreamer.iknow.Social.GetFriends}: java.lang.NullPointerException: Attempt to invoke interface method 'java.lang.Object[] java.util.Collection.toArray()' on a null object reference
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  5. 0

    java.lang.NullPointerException: Attempt to invoke virtual method on a null object reference while getting instance of other class and method

    Stack Overflow | 2 months ago | Addi.Star
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.adnan.zwd.hidoctor/com.adnan.zwd.hidoctor.activity.Login_Act}: java.lang.NullPointerException: Attempt to invoke virtual method 'com.adnan.zwd.hidoctor.helper.MyPrefM com.adnan.zwd.hidoctor.app.MyApplication.getPrefM()' on a null object reference
  6. 0

    Issue 191278 - android - java.lang.NullPointerException: Attempt to invoke virtual method 'android.text.Editable android.widget.EditText.getText()' on a null object reference - Android Open Source Project - Issue Tracker - Google Project Hosting

    google.com | 9 months ago
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.root.myapplication/com.example.root.myapplication.LoginActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.text.Editable android.widget.EditText.getText()' on a null object reference

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Root Cause Analysis

  1. java.lang.RuntimeException

    Unable to start activity ComponentInfo{com.ummahtalk.social/com.ummahtalk.social.gcm.activity.LoginActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'com.ummahtalk.social.gcm.helper.MyPreferenceManager com.ummahtalk.social.gcm.app.MyApplication.getPrefManager()' on a null object reference

    at android.app.ActivityThread.performLaunchActivity()
  2. Android Platform
    ActivityThread.handleLaunchActivity
    1. android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2649)
    2. android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2710)
    2 frames