OnClickListener가 ConstraintLayout에 null을 반환합니다.

Question

Constraint Layout에 OnClickListener를 추가 할 수 없습니다. 항상 null을 반환합니다.

가 나는 ComplexButton definded 한 :

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); 
} 

내가 텍스트 뷰와 이미지 뷰를 설정할 수 있습니다. 그러나 clickableArea의 경우 null을 반환합니다.

다른 클래스에서는 인스턴스를 만들어 elemets를 설정합니다.

@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); 
     } 
    }); 

그리고 XML 파일 : 나는 모든 이미지와 텍스트를 설정할 수 있습니다

<?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" /> 

으로는 befor을 말했다. 하지만 clickableArea null 포인터를 가져옵니다.

ConstraintLayout의 경우 "com.android.support.constraint를 컴파일하십시오 : constraint-layout : 1.0.2 '" 더 새로운 버전이 있습니까?

Answer 1

당신은 측면에서 ConstraintLayout을 찾기 위해 노력하는 당신의 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); 

당신이 이미 찾아 ContraintLayout 당신이 여기 ComplexButton 클래스의 생성자에 전달되는 것을

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

이 대신

를 수행

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; 
    } 
}