java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.user.mediaplayer/com.example.user.mediaplayer.MainActivity}: java.lang.NullPointerException: Attempt to get length of null array

Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Samebug tips

,

Create an empty public constructor in your code.

Solutions on the web

via Stack Overflow by Mister Blue
, 1 year ago
Unable to start activity ComponentInfo{com.example.user.mediaplayer/com.example.user.mediaplayer.MainActivity}: java.lang.NullPointerException: Attempt to get length of null array
via Stack Overflow by shridutt kothari
, 1 year ago
Unable to start activity ComponentInfo{com.android.packageinstaller/com.android.packageinstaller.permission.ui.GrantPermissionsActivity}: java.lang.NullPointerException: Attempt to get length of null array
via Stack Overflow by Ravi
, 1 year ago
Unable to start activity ComponentInfo{com.google.android.packageinstaller/com.android.packageinstaller.permission.ui.GrantPermissionsActivity}: java.lang.NullPointerException: Attempt to get length of null array
via Stack Overflow by vijaya priya
, 10 months ago
Unable to start activity ComponentInfo{com.ses.arduinousb/com.ses.arduinousb.send}: java.lang.NullPointerException: Attempt to get length of null array
via Stack Overflow by Andy
, 5 months ago
Unable to start activity ComponentInfo{com.applications.ars.mynotizenundactivityapp/com.applications.ars.mynotizenundactivityapp.DateiAuswahlActivity}: java.lang.NullPointerException: Attempt to get length of null array
via Stack Overflow by Neo
, 1 month ago
Unable to start activity ComponentInfo{com.phoenix.agecalculator/com.phoenix.agecalculator.PersonDetailsActivity}: java.lang.NullPointerException: Attempt to get length of null array
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.user.mediaplayer/com.example.user.mediaplayer.MainActivity}: java.lang.NullPointerException: Attempt to get length of null array
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)

Users with the same issue

66 times, 4 weeks ago
Once, 2 months ago
33 times, 3 months ago
8 times, 3 months ago
468 times, 4 months ago

Write tip

Know the solutions? Share your knowledge to help other developers to debug faster.