Java 类android.support.v4.view.AccessibilityDelegateCompat 实例源码

@Override
public View getView(final LayoutInflater inflater, ViewGroup container, Context context) {
    View view = inflater.inflate(R.layout.test_role_description, container, false);
    AccessibilityDelegateCompat buttonDelegate = new AccessibilityDelegateCompat() {
        @Override
        public void onInitializeAccessibilityNodeInfo(View host,
                                                      AccessibilityNodeInfoCompat info) {
            super.onInitializeAccessibilityNodeInfo(host, info);
            info.setRoleDescription(getString(R.string.role_entry_point));
        }
    };
    View mailButton = view.findViewById(R.id.test_role_description_mailButton);
    mailButton.setContentDescription(getString(R.string.role_send_email));
    ViewCompat.setAccessibilityDelegate(mailButton, buttonDelegate);

    View playButton = view.findViewById(R.id.test_role_description_playButton);
    playButton.setContentDescription(getString(R.string.role_send_email));
    ViewCompat.setAccessibilityDelegate(playButton, buttonDelegate);

    View lockButton = view.findViewById(R.id.test_role_description_lockButton);
    lockButton.setContentDescription(getString(R.string.role_lock_screen));
    ViewCompat.setAccessibilityDelegate(lockButton, buttonDelegate);

    return view;
}

private void installAccessibilityDelegate() {
    // The accessibility delegate enables customizing accessibility behavior
    // via composition as opposed as inheritance. The main benefit is that
    // one can write a backwards compatible application by setting the delegate
    // only if the API level is high enough i.e. the delegate is part of the APIs.
    // The easiest way to achieve that is by using the support library which
    // takes the burden of checking API version and knowing which API version
    // introduced the delegate off the developer.
    ViewCompat.setAccessibilityDelegate(this, new AccessibilityDelegateCompat() {

        @Override
        public void onInitializeAccessibilityEvent(View host, AccessibilityEvent event) {
            super.onInitializeAccessibilityEvent(host, event);
            // Note that View.onInitializeAccessibilityNodeInfo was introduced in
            // ICS and we would like to tweak a bit the text that is reported to
            // accessibility services via the AccessibilityNodeInfo.
            if (event.getEventType() == AccessibilityEventCompat.TYPE_VIEW_SCROLLED) {
                event.setFromIndex(0);
            }
        }

    });
}

protected void onFinishInflate()
{
  super.onFinishInflate();
  this.mTitleRecycler = ((PlayRecyclerView)findViewById(2131755930));
  this.mPageIndicator = ((ScalingPageIndicator)findViewById(2131755931));
  ViewCompat.setImportantForAccessibility(this.mPageIndicator, 2);
  getContext();
  LinearLayoutManager localLinearLayoutManager = new LinearLayoutManager(0);
  this.mTitleRecycler.setLayoutManager(localLinearLayoutManager);
  this.mTitleRecycler.setHasFixedSize(true);
  this.mTitleRecycler.setFocusable(false);
  ViewCompat.setAccessibilityDelegate(this.mTitleRecycler, new AccessibilityDelegateCompat()
  {
    public final void onInitializeAccessibilityEvent(View paramAnonymousView, AccessibilityEvent paramAnonymousAccessibilityEvent)
    {
      AccessibilityRecordCompat localAccessibilityRecordCompat = AccessibilityEventCompat.asRecord(paramAnonymousAccessibilityEvent);
      AccessibilityRecordCompat.IMPL.setContentDescription(localAccessibilityRecordCompat.mRecord, null);
    }
  });
  if (Build.VERSION.SDK_INT >= 14) {
    this.mTitleRecycler.addOnScrollListener(new RecyclerView.OnScrollListener()
    {
      @TargetApi(14)
      public final void onScrolled(RecyclerView paramAnonymousRecyclerView, int paramAnonymousInt1, int paramAnonymousInt2)
      {
        super.onScrolled(paramAnonymousRecyclerView, paramAnonymousInt1, paramAnonymousInt2);
        paramAnonymousRecyclerView.getLayoutManager();
        int i = PlayHighlightsOverlayView.this.mTitleRecycler.getWidth();
        int j = PlayHighlightsOverlayView.this.mTitleRecycler.getLeft() + i / 2;
        for (int k = 0; k < paramAnonymousRecyclerView.getChildCount(); k++)
        {
          View localView = paramAnonymousRecyclerView.getChildAt(k);
          float f = Math.abs(LinearLayoutManager.getDecoratedLeft(localView) + LinearLayoutManager.getDecoratedMeasuredWidth(localView) / 2 - j) / PlayHighlightsOverlayView.this.mItemWidth;
          localView.setAlpha(Math.max(0.0F, 1.0F - PlayHighlightsOverlayView.this.mAlphaInterpolator.getInterpolation(f)));
        }
      }
    });
  }
}

AccessibilityDelegateCompat getItemDelegate() {
    return mItemDelegate;
}

AccessibilityDelegateCompat getItemDelegate() {
    return this.mItemDelegate;
}

AccessibilityDelegateCompat getItemDelegate() {
    return mItemDelegate;
}

AccessibilityDelegateCompat getItemDelegate() {
    return this.mItemDelegate;
}

@Override
public AccessibilityDelegateCompat getItemDelegate() {
    return mItemDelegate;
}

public AccessibilityDelegateCompat getAccessibilityDelegate() {
    return mDelegate;
}

AccessibilityDelegateCompat getItemDelegate() {
    return mItemDelegate;
}

public AccessibilityDelegateCompat getAccessibilityDelegate() {
  return mDelegate;
}

public AccessibilityDelegateCompat getAccessibilityDelegate() {
    return mDelegate;
}

public AccessibilityDelegateCompat getAccessibilityDelegate() {
    return mDelegate;
}

public AccessibilityDelegateCompat getAccessibilityDelegate() {
    return mDelegate;
}

public AccessibilityDelegateCompat getAccessibilityDelegate() {
    return mDelegate;
}

public AccessibilityDelegateCompat getAccessibilityDelegate() {
    return mDelegate;
}

/**
 * Gets the AccessibilityDelegate for an individual item in the RecyclerView.
 * A basic item delegate is provided by default, but you can override this
 * method to provide a custom per-item delegate.
 */
public AccessibilityDelegateCompat getItemDelegate() {
    return mItemDelegate;
}