public void notifyDataSetChanged() {
   mTabLayout.removeAllViews();
   PagerAdapter adapter = mViewPager.getAdapter();
   IconPagerAdapter iconAdapter = null;
   if (adapter instanceof IconPagerAdapter) {
     iconAdapter = (IconPagerAdapter) adapter;
   }
   final int count = adapter.getCount();
   for (int i = 0; i < count; i++) {
     CharSequence title = adapter.getPageTitle(i);
     if (title == null) {
       title = EMPTY_TITLE;
     }
     int iconResId = 0;
     if (iconAdapter != null) {
       iconResId = iconAdapter.getIconResId(i);
     }
     addTab(i, title, iconResId);
   }
   if (mSelectedTabIndex > count) {
     mSelectedTabIndex = count - 1;
   }
   setCurrentItem(mSelectedTabIndex);
   requestLayout();
 }
  @Override
  public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    final int widthMode = MeasureSpec.getMode(widthMeasureSpec);
    final boolean lockedExpanded = widthMode == MeasureSpec.EXACTLY;
    setFillViewport(lockedExpanded);

    final int childCount = mTabLayout.getChildCount();
    if (childCount > 1 && (widthMode == MeasureSpec.EXACTLY || widthMode == MeasureSpec.AT_MOST)) {
      if (childCount > 2) {
        //                mMaxTabWidth = (int)(MeasureSpec.getSize(widthMeasureSpec) * 0.4f);
      } else {
        mMaxTabWidth = MeasureSpec.getSize(widthMeasureSpec) / 2;
      }
    } else {
      mMaxTabWidth = -1;
    }

    final int oldWidth = getMeasuredWidth();
    super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    final int newWidth = getMeasuredWidth();

    if (lockedExpanded && oldWidth != newWidth) {
      // Recenter the tab display if we're at a new (scrollable) size.
      setCurrentItem(mSelectedTabIndex);
    }
  }
 public void notifyDataSetChanged() {
   mIconsLayout.removeAllViews();
   com.viewpagerindicator.IconPagerAdapter iconAdapter =
       (com.viewpagerindicator.IconPagerAdapter) mViewPager.getAdapter();
   int count = iconAdapter.getCount();
   for (int i = 0; i < count; i++) {
     ImageView view = new ImageView(getContext(), null, R.attr.vpiIconPageIndicatorStyle);
     view.setImageResource(iconAdapter.getIconResId(i));
     mIconsLayout.addView(view);
   }
   if (mSelectedIndex > count) {
     mSelectedIndex = count - 1;
   }
   setCurrentItem(mSelectedIndex);
   requestLayout();
 }
  @Override
  public void setCurrentItem(int item) {
    if (mViewPager == null) {
      throw new IllegalStateException("ViewPager has not been bound.");
    }
    mSelectedTabIndex = item;
    mViewPager.setCurrentItem(item);

    final int tabCount = mTabLayout.getChildCount();
    for (int i = 0; i < tabCount; i++) {
      final View child = mTabLayout.getChildAt(i);
      final boolean isSelected = (i == item);
      child.setSelected(isSelected);
      if (isSelected) {
        animateToTab(item);
      }
    }
  }
Example #5
0
  private void addTab(int index, CharSequence text, int iconResId) {
    final TabView tabView = new TabView(getContext());
    tabView.mIndex = index;
    tabView.setFocusable(true);
    tabView.setOnClickListener(mTabClickListener);
    tabView.setText(text);

    if (iconResId != 0) {
      tabView.setCompoundDrawablesWithIntrinsicBounds(iconResId, 0, 0, 0);
    }

    mTabLayout.addView(tabView, new LinearLayout.LayoutParams(0, MATCH_PARENT, 1));
  }
 private void animateToTab(final int position) {
   final View tabView = mTabLayout.getChildAt(position);
   if (mTabSelector != null) {
     removeCallbacks(mTabSelector);
   }
   mTabSelector =
       new Runnable() {
         public void run() {
           final int scrollPos = tabView.getLeft() - (getWidth() - tabView.getWidth()) / 2;
           smoothScrollTo(scrollPos, 0);
           mTabSelector = null;
         }
       };
   post(mTabSelector);
 }
 private void animateToIcon(final int position) {
   final View iconView = mIconsLayout.getChildAt(position);
   if (mIconSelector != null) {
     removeCallbacks(mIconSelector);
   }
   mIconSelector =
       new Runnable() {
         public void run() {
           final int scrollPos = iconView.getLeft() - (getWidth() - iconView.getWidth()) / 2;
           smoothScrollTo(scrollPos, 0);
           mIconSelector = null;
         }
       };
   post(mIconSelector);
 }