OnClickListener renvoie null pour ConstraintLayout

Question

Je ne peux pas ajouter un OnClicklistener à mai Constraint Layout. Il retourne toujours nul.

J'ai definded un ComplexButton:

public class ComplexButton{ 

private TextView title; 
private TextView subTitle; 
private ImageView icon; 
private ConstraintLayout clickableArea; 

public ComplexButton(ConstraintLayout layout) { 
    title = (TextView) layout.findViewById(R.id.textview_title); 
    subTitle = (TextView) layout.findViewById(R.id.textview_button_subtitle); 
    icon = (ImageView) layout.findViewById(R.id.imageview_button_icon); 
    clickableArea = (ConstraintLayout) layout.findViewById(R.id.complex_button_clickable_area_new); 
} 

je peux régler la TextView et ImageView. Mais pour le clickableArea il renvoie null.

Dans mon autre classe, j'en crée une instance pour définir les élémets.

@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 
    View view = inflater.inflate(R.layout.NotOfInterrest, container, false); 

    ConstraintLayout complexButtonLayout= (ConstraintLayout) view.findViewById(R.id.buttonHotspotFinder_new); 
    ComplexButton complexButton= new ComplexButton(complexButtonLayout); 

    complexButton.setTitle(getString(R.string.tab_find_hotspot)); 
    complexButton.setSubtitle("Browse hotspots on our map"); 
    complexButton.setImageResource(R.drawable.show_hotspots_map); 


    complexButton.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      Intent intent = new Intent(getContext(), NotOfInterrest.class); 
      startActivity(intent); 
     } 
    }); 

et le fichier XML:

<?xml version="1.0" encoding="utf-8"?> 
<android.support.constraint.ConstraintLayout 
xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:app="http://schemas.android.com/apk/res-auto" 
xmlns:tools="http://schemas.android.com/tools" 
android:layout_width="match_parent" 
android:layout_height="wrap_content" 
android:background="@drawable/complex_button_layout" 
android:clickable="true" 
android:focusable="false" 
android:focusableInTouchMode="false" 
android:id="@+id/complex_button_clickable_area_new"> 

<ImageView 
    android:id="@+id/imageview_button_icon" 
    android:layout_width="50dp" 
    android:layout_height="50dp" 
    android:layout_marginBottom="8dp" 
    android:layout_marginLeft="8dp" 
    android:layout_marginRight="8dp" 
    android:layout_marginTop="8dp" 
    app:layout_constraintBottom_toBottomOf="parent" 
    app:layout_constraintHorizontal_bias="0.027" 
    app:layout_constraintLeft_toLeftOf="parent" 
    app:layout_constraintRight_toRightOf="parent" 
    app:layout_constraintTop_toTopOf="parent" 
    app:layout_constraintVertical_bias="0.0" 
    app:srcCompat="@drawable/buy_hotspot_subscription" /> 

<ImageView 
    android:id="@+id/imageview_right_arrow" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_marginBottom="8dp" 
    android:layout_marginRight="8dp" 
    android:layout_marginTop="8dp" 
    app:layout_constraintBottom_toBottomOf="parent" 
    app:layout_constraintRight_toRightOf="parent" 
    app:layout_constraintTop_toTopOf="parent" 
    app:srcCompat="@drawable/ic_keyboard_arrow_right_black_48dp" /> 

<TextView 
    android:id="@+id/textview_title" 
    android:layout_width="0dp" 
    android:layout_height="wrap_content" 
    android:layout_marginLeft="8dp" 
    android:layout_marginRight="8dp" 
    android:layout_marginTop="8dp" 
    android:text="TextView" 
    android:textColor="@color/colorPrimary" 
    app:layout_constraintHorizontal_bias="0.0" 
    app:layout_constraintLeft_toRightOf="@+id/imageview_button_icon" 
    app:layout_constraintRight_toLeftOf="@+id/imageview_right_arrow" 
    app:layout_constraintTop_toTopOf="parent" /> 

<TextView 
    android:id="@+id/textview_button_subtitle" 
    android:layout_width="0dp" 
    android:layout_height="wrap_content" 
    android:layout_marginBottom="8dp" 
    android:layout_marginLeft="8dp" 
    android:layout_marginRight="8dp" 
    android:layout_marginTop="8dp" 
    android:text="TextView" 
    android:textSize="16dp" 
    app:layout_constraintBottom_toBottomOf="parent" 
    app:layout_constraintHorizontal_bias="0.0" 
    app:layout_constraintLeft_toRightOf="@+id/imageview_button_icon" 
    app:layout_constraintRight_toLeftOf="@+id/imageview_right_arrow" 
    app:layout_constraintTop_toBottomOf="@+id/textview_title" 
    app:layout_constraintVertical_bias="0.0" /> 

Comme dit befor: Je peux définir chaque image et le texte. Mais pour le clickableArea j'obtiens un pointeur nul. Pour ConstraintLayout, j'utilise "compile 'com.android.support.constraint: constraint-layout: 1.0.2'" Y at-il une version plus récente?

Answer 1

Vous essayez de trouver ConstraintLayout à côté de votre ConstraintLayout

//Here layout is already an instance of your ConstraintLayout and you are again finding a ConstraintLayout in that 
clickableArea = (ConstraintLayout) layout.findViewById(R.id.complex_button_clickable_area_new); 

Vous avez trouvé déjà ContraintLayout et que vous passez au constructeur de ComplexButton classe ici

ConstraintLayout complexButtonLayout= (ConstraintLayout) view.findViewById(R.id.buttonHotspotFinder_new); 
ComplexButton complexButton= new ComplexButton(complexButtonLayout); 

Est-ce que ce lieu

public class ComplexButton { 

    private TextView title; 
    private TextView subTitle; 
    private ImageView icon; 
    private ConstraintLayout clickableArea; 

    public ComplexButton(ConstraintLayout layout) { 
     title = (TextView) layout.findViewById(R.id.textview_title); 
     subTitle = (TextView) 
      layout.findViewById(R.id.textview_button_subtitle); 
     icon = (ImageView) layout.findViewById(R.id.imageview_button_icon); 
     //because layout is your constraint layout 
     clickableArea = layout; 
    } 
}