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  1. ,

    You try to parse a String that contains non-numeric characters to an int. The string must contain decimal characters only, optionally beginning with a + or - sign.

  2. ,

    Can occur when you try to convert a String to a numeric value but the String is not well formatted for the conversion.

Solutions on the web

via Stack Overflow by Segue Diallo
, 1 year ago
Unable to start activity ComponentInfo{com.example.segue.vachetaureau/com.example.segue.vachetaureau.contestation}: java.lang.NumberFormatException: Invalid int: ""
via Stack Overflow by HemalHerath
, 4 months ago
Unable to start activity ComponentInfo{com.example.crowderia.eatit/com.example.crowderia.eatit.CartActivity}: java.lang.NumberFormatException: Invalid int: "PIZZA 1"
via GitHub by jogrimst
, 1 year ago
Unable to start activity ComponentInfo{org.literacyapp/org.literacyapp.authentication.AuthenticationActivity}: java.lang.NumberFormatException: Invalid int: "null"
via GitHub by CKDPublishing
, 2 years ago
Unable to start activity ComponentInfo{au.com.company.test/au.com.company.test.MainActivity}: java.lang.NumberFormatException: Invalid int: "null"
via GitHub by literacyapp
, 1 year ago
Unable to start activity ComponentInfo{org.literacyapp/org.literacyapp.authentication.AuthenticationActivity}: java.lang.NumberFormatException: Invalid int: "null"
via GitHub by CKDPublishing
, 2 years ago
Unable to start activity ComponentInfo{au.com.company.test/au.com.company.test.MainActivity}: java.lang.NumberFormatException: Invalid int: "null"
java.lang.NumberFormatException: Invalid int: ""	at java.lang.Integer.invalidInt(Integer.java:138)	at java.lang.Integer.parseInt(Integer.java:358)	at java.lang.Integer.parseInt(Integer.java:334)	at com.example.segue.vachetaureau.contestation.onCreate(contestation.java:30)	at android.app.Activity.performCreate(Activity.java:6289)	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1119)	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2646)