LinearLayout est null à l'intérieur du bouton onClick

Question

J'essaie de cacher une linearlayout sur un clic de bouton et d'afficher une autre linearlayout qui est dans le même fichier de mise en page. Mais les linearlayouts sont null à l'intérieur du onclick du bouton. Les numéros displayLayout et editLayout sont null.

 displayLayout = (LinearLayout) findViewById(R.id.linearLayout); 
    editLayout = (LinearLayout) findViewById(R.id.editLayout); 
    edit.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View view) { 
      displayLayout = (LinearLayout) findViewById(R.id.linearLayout); 
      editLayout = (LinearLayout) findViewById(R.id.editLayout); 
      displayLayout.setVisibility(View.GONE); //error occurs here 
      editLayout.setVisibility(View.VISIBLE); 
     } 
    }); 
} 

Voici le fichier de mise en page:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:tools="http://schemas.android.com/tools" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:paddingBottom="@dimen/activity_vertical_margin" 
android:paddingLeft="@dimen/activity_horizontal_margin" 
android:paddingRight="@dimen/activity_horizontal_margin" 
android:paddingTop="@dimen/activity_vertical_margin" 
tools:context="com.prematixsofs.taxiapp.EditUserDetails"> 

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:id="@+id/ScrollView01" 
    android:layout_width="match_parent" 
    android:layout_height="fill_parent" 

    > 
    <!--Display UserDetails Layout--> 

    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
     xmlns:tools="http://schemas.android.com/tools" 
     android:id="@+id/displayLayout" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:layout_gravity="center" 
     android:orientation="vertical"> 

     <LinearLayout 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:gravity="center" 
      android:orientation="vertical" 
      android:padding="15dp"> 

      <TextView 
       android:id="@+id/name" 
       android:layout_width="match_parent" 
       android:layout_height="wrap_content" 
       android:layout_margin="5dp" 
       android:background="@drawable/custom_edittext" 
       android:gravity="center" 
       android:padding="8dp" 
       android:paddingLeft="10dp" 
       android:paddingRight="5dp" /> 

      <TextView 
       android:id="@+id/phNo" 
       android:layout_width="match_parent" 
       android:layout_height="wrap_content" 
       android:layout_margin="10dp" 
       android:background="@drawable/custom_edittext" 
       android:gravity="center" 
       android:padding="8dp" 
       android:paddingLeft="10dp" 
       android:paddingRight="5dp" /> 

      <TextView 
       android:id="@+id/email" 
       android:layout_width="match_parent" 
       android:layout_height="wrap_content" 
       android:layout_margin="10dp" 
       android:background="@drawable/custom_edittext" 
       android:gravity="center" 
       android:inputType="textEmailAddress" 
       android:padding="8dp" 
       android:paddingLeft="10dp" 
       android:paddingRight="5dp" /> 

     </LinearLayout> 

     <LinearLayout 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:gravity="center" 
      android:orientation="vertical" 
      android:padding="15dp"> 

      <Button 
       android:id="@+id/edit" 
       android:layout_width="300dp" 
       android:layout_height="wrap_content" 
       android:background="@drawable/button_custom" 
       android:text="Edit" 
       android:textColor="#ffffff" /> 
     </LinearLayout> 

    </LinearLayout> 
</ScrollView> 

<!--Edit Layout --> 
<LinearLayout 
    android:id="@+id/editLayout" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:orientation="vertical" 

    > 

    <EditText 
     android:id="@+id/editName" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:layout_margin="5dp" 
     android:background="@drawable/custom_edittext" 
     android:gravity="center" 
     android:padding="8dp" 
     android:paddingLeft="10dp" 
     android:paddingRight="5dp" /> 

    <EditText 
     android:id="@+id/editPhNo" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:layout_margin="10dp" 
     android:background="@drawable/custom_edittext" 
     android:gravity="center" 
     android:padding="8dp" 
     android:paddingLeft="10dp" 
     android:paddingRight="5dp" /> 

    <EditText 
     android:id="@+id/editPassword" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:layout_margin="10dp" 
     android:background="@drawable/custom_edittext" 
     android:gravity="center" 
     android:padding="8dp" 
     android:paddingLeft="10dp" 
     android:paddingRight="5dp" /> 

    <EditText 
     android:id="@+id/editConfirmPassword" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:layout_margin="10dp" 
     android:background="@drawable/custom_edittext" 
     android:gravity="center" 
     android:padding="8dp" 
     android:paddingLeft="10dp" 
     android:paddingRight="5dp" /> 

</LinearLayout> 

Answer 1

code d'erreur displayLayout = (LinearLayout) findViewById (R. id.linearLayout);

code de droite displayLayout = (LinearLayout) findViewById (R.id.displayLayout);

Vous définissez un ID n'existe pas.

Answer 2

Il suffit de fixer votre point de vue ID dans votre code

displayLayout = (LinearLayout) findViewById(R.id.displayLayout); 
    editLayout = (LinearLayout) findViewById(R.id.editLayout); 
    edit.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View view) { 
      displayLayout.setVisibility(View.GONE); 
      editLayout.setVisibility(View.VISIBLE); 
     } 
    }); 
}