java.lang.RuntimeException

Unable to start activity ComponentInfo{com.domain.appname/com.domain.appname.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.domain.appname.NavigationDrawerFragment.setUp(int, android.support.v4.widget.DrawerLayout)' on a null object reference

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Solutions on the web45912

  • via Stack Overflow by Keith
    , 1 year ago
    Unable to start activity ComponentInfo{com.domain.appname/com.domain.appname.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.domain.appname.NavigationDrawerFragment.setUp(int, android.support.v4.widget.DrawerLayout)' on a null object reference
  • Unable to start activity ComponentInfo{com.hoge.zousan.piyo/com.hoge.zousan.piyo.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.hoge.zousan.piyo.NavigationDrawerFragment.setUp(int, android.support.v4.widget.DrawerLayout)' on a null object reference
  • Unable to start activity ComponentInfo{com.nile.donow/com.nile.donow.DailiesActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.nile.donow.FragmentDrawer.setUp(int, android.support.v4.widget.DrawerLayout, android.support.v7.widget.Toolbar)' on a null object reference
  • Stack trace

    • java.lang.RuntimeException: Unable to start activity ComponentInfo{com.domain.appname/com.domain.appname.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.domain.appname.NavigationDrawerFragment.setUp(int, android.support.v4.widget.DrawerLayout)' on a null object reference at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2379) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2441) at android.app.ActivityThread.access$800(ActivityThread.java:162) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1349) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5431) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:914) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:707) Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.domain.appname.NavigationDrawerFragment.setUp(int, android.support.v4.widget.DrawerLayout)' on a null object reference at com.domain.appname.MainActivity.onCreate(MainActivity.java:40) at android.app.Activity.performCreate(Activity.java:6056) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2332)

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