java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.android.miwok/com.example.android.miwok.NumbersActivity}: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.

  1. 0

    You must call removeView() on the child's parent first! How to get rid of this error?

    Stack Overflow | 3 months ago | ahmeddjebali89
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.android.miwok/com.example.android.miwok.NumbersActivity}: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
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    java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
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    Potential IllegalStateException

    GitHub | 4 years ago | Gryzor
    java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
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    java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
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    GitHub | 4 years ago | kolipass
    java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.

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Root Cause Analysis

  1. java.lang.IllegalStateException

    The specified child already has a parent. You must call removeView() on the child's parent first.

    at android.view.ViewGroup.addViewInner()
  2. Android Platform
    ViewGroup.addView
    1. android.view.ViewGroup.addViewInner(ViewGroup.java:3430)
    2. android.view.ViewGroup.addView(ViewGroup.java:3301)
    3. android.view.ViewGroup.addView(ViewGroup.java:3246)
    4. android.view.ViewGroup.addView(ViewGroup.java:3222)
    4 frames
  3. com.example.android
    NumbersActivity.onCreate
    1. com.example.android.miwok.NumbersActivity.onCreate(NumbersActivity.java:40)
    1 frame
  4. Android Platform
    ActivityThread.performLaunchActivity
    1. android.app.Activity.performCreate(Activity.java:5122)
    2. android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1081)
    3. android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2336)
    3 frames