Расширение RecyclerView: ошибка раздувания класса com.example.MyRecyclerView

Question

Я хочу отключить прокрутку RecyclerView. Для этого я пытаюсь определить пользовательский MyRecyclerView, расширив RecyclerView.

MyRecyclerView.java

package com.example; 

import android.content.Context; 
import android.support.v7.widget.RecyclerView; 
import android.view.MotionEvent; 

class MyRecyclerView extends RecyclerView { 
    private boolean scrollable = true; 

    public MyRecyclerView(Context context) { 
     super(context); 
    } 

    public void setScrollingEnabled(boolean scrollable) { 
     this.scrollable = scrollable; 
    } 

    public boolean isScrollable() { 
     return scrollable; 
    } 

    @Override 
    public boolean onTouchEvent(MotionEvent ev) { 
     switch (ev.getAction()) { 
      case MotionEvent.ACTION_DOWN: 
       // if we can scroll pass the event to the superclass 
       if (scrollable) return super.onTouchEvent(ev); 
       // only continue to handle the touch event if scrolling enabled 
       return scrollable; // scrollable is always false at this point 
      default: 
       return super.onTouchEvent(ev); 
     } 
    } 

    @Override 
    public boolean onInterceptTouchEvent(MotionEvent ev) { 
     // Don't do anything with intercepted touch events if 
     // we are not scrollable 
     if (!scrollable) return false; 
     else return super.onInterceptTouchEvent(ev); 
    } 
} 

Layout File

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:background="@color/final_gray_bg" > 

    <android.support.v4.widget.SwipeRefreshLayout 
     android:id="@+id/swipeRefreshLayout" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" > 

     <com.example.MyRecyclerView 
      android:id="@+id/sblistview" 
      android:layout_width="match_parent" 
      android:layout_height="match_parent" 
      android:divider="@null" 
      android:fadingEdge="none" 
      android:gravity="center" 
      android:horizontalSpacing="@dimen/d1" 
      android:verticalSpacing="@dimen/d1" /> 
    </android.support.v4.widget.SwipeRefreshLayout> 
</RelativeLayout> 

Error Log

07-01 14:15:01.330: E/AndroidRuntime(27649): FATAL EXCEPTION: main 
07-01 14:15:01.330: E/AndroidRuntime(27649): android.view.InflateException: Binary XML file line #12: Error inflating class com.example.MyRecyclerView 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.view.LayoutInflater.createView(LayoutInflater.java:603) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:696) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.view.LayoutInflater.rInflate(LayoutInflater.java:755) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.view.LayoutInflater.rInflate(LayoutInflater.java:758) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.view.LayoutInflater.inflate(LayoutInflater.java:492) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.view.LayoutInflater.inflate(LayoutInflater.java:397) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at miui.dexspy.DexspyInstaller.invokeOriginalMethodNative(Native Method) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at miui.dexspy.DexspyInstaller.invokeOriginalMethod(DexspyInstaller.java:491) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at miui.dexspy.DexspyInstaller.handleHookedMethod(DexspyInstaller.java:405) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.view.LayoutInflater.inflate(Native Method) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at com.example.SBNew.onCreateView(SBNew.java:59) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.support.v4.app.Fragment.performCreateView(Fragment.java:1789) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:955) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1138) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:740) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1501) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:490) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.support.v4.view.ViewPager.populate(ViewPager.java:1105) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.support.v4.view.ViewPager.populate(ViewPager.java:951) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1473) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.view.View.measure(View.java:15891) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.widget.LinearLayout.measureVertical(LinearLayout.java:847) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.widget.LinearLayout.onMeasure(LinearLayout.java:588) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.view.View.measure(View.java:15891) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5035) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.view.View.measure(View.java:15891) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5035) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.widget.LinearLayout.measureVertical(LinearLayout.java:695) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.widget.LinearLayout.onMeasure(LinearLayout.java:588) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.view.View.measure(View.java:15891) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5035) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.view.View.measure(View.java:15891) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5035) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at com.android.internal.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:302) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.view.View.measure(View.java:15891) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5035) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2208) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.view.View.measure(View.java:15891) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1957) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1156) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1336) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1056) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5542) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.view.Choreographer.doCallbacks(Choreographer.java:562) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.view.Choreographer.doFrame(Choreographer.java:532) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.os.Handler.handleCallback(Handler.java:730) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.os.Handler.dispatchMessage(Handler.java:92) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.os.Looper.loop(Looper.java:137) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at android.app.ActivityThread.main(ActivityThread.java:5162) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at java.lang.reflect.Method.invokeNative(Native Method) 
07-01 14:15:01.330: E/AndroidRuntime(27649): at java.lang.reflect.Method.invoke(Metho 

Что я делать неправильно?

Любая помощь будет оценена по достоинству. Благодаря

Answer 1

Вы должны реализовать другие конструкторы тоже:

public MyRecyclerView(Context context, AttributeSet attrs) { 
    super(context, attrs); 
} 

public MyRecyclerView(Context context, AttributeSet attrs, int defStyle) { 
    super(context, attrs, defStyle); 
} 

Вы создаете MyRecyclerView через XML, поэтому вам нужно конструктору с AttributeSet параметра.