Java Code Examples for androidx.viewpager.widget.PagerAdapter#getCount()

The following examples show how to use androidx.viewpager.widget.PagerAdapter#getCount() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: TabPageIndicator.java    From material with Apache License 2.0 6 votes vote down vote up 
private void notifyDataSetInvalidated() {
	PagerAdapter adapter = mViewPager.getAdapter();
	final int count = adapter.getCount();
       for (int i = 0; i < count; i++) {
       	TextView tv = getTabView(i);

           if(tv != null) {
               CharSequence title = adapter.getPageTitle(i);
               if (title == null)
                   title = "NULL";

               tv.setText(title);
           }
       }
       
       requestLayout();
}
Example 2
Source File: CircleIndicator.java    From CircleIndicator with Apache License 2.0 6 votes vote down vote up 
@Override public void onChanged() {
    super.onChanged();
    if (mViewpager == null) {
        return;
    }
    PagerAdapter adapter = mViewpager.getAdapter();
    int newCount = adapter != null ? adapter.getCount() : 0;
    int currentCount = getChildCount();
    if (newCount == currentCount) {
        // No change
        return;
    } else if (mLastPosition < newCount) {
        mLastPosition = mViewpager.getCurrentItem();
    } else {
        mLastPosition = -1;
    }
    createIndicators();
}
Example 3
Source File: TabPageIndicator.java    From arcusandroid with Apache License 2.0 6 votes vote down vote up 
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();
}
Example 4
Source File: RtlViewPager.java    From rtl-viewpager with Apache License 2.0 6 votes vote down vote up 
@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
    // The documentation says that `getPageWidth(...)` returns the fraction of the _measured_ width that that page takes up.  However, the code seems to
    // use the width so we will here too.
    final int width = getWidth();
    PagerAdapter adapter = RtlViewPager.super.getAdapter();
    if (isRtl() && adapter != null) {
        int count = adapter.getCount();
        int remainingWidth = (int) (width * (1 - adapter.getPageWidth(position))) + positionOffsetPixels;
        while (position < count && remainingWidth > 0) {
            position += 1;
            remainingWidth -= (int) (width * adapter.getPageWidth(position));
        }
        position = count - position - 1;
        positionOffsetPixels = -remainingWidth;
        positionOffset = positionOffsetPixels / (width * adapter.getPageWidth(position));
    }
    mListener.onPageScrolled(position, positionOffset, positionOffsetPixels);
}
Example 5
Source File: RtlViewPager.java    From rtl-viewpager with Apache License 2.0 5 votes vote down vote up 
@Override
public void onPageSelected(int position) {
    PagerAdapter adapter = RtlViewPager.super.getAdapter();
    if (isRtl() && adapter != null) {
        position = adapter.getCount() - position - 1;
    }
    mListener.onPageSelected(position);
}
Example 6
Source File: TabStripHelper.java    From ProjectX with Apache License 2.0 5 votes vote down vote up 
int getPageCount() {
    if (mPager == null)
        return 0;
    final PagerAdapter adapter = mPager.getAdapter();
    if (adapter == null)
        return 0;
    return adapter.getCount();
}
Example 7
Source File: CircleIndicator.java    From CircleIndicator with Apache License 2.0 5 votes vote down vote up 
private void createIndicators() {
    PagerAdapter adapter = mViewpager.getAdapter();
    int count;
    if (adapter == null) {
        count = 0;
    } else {
        count = adapter.getCount();
    }
    createIndicators(count, mViewpager.getCurrentItem());
}
Example 8
Source File: ViewActions.java    From Kore with Apache License 2.0 5 votes vote down vote up 
public static ViewAction setCurrentViewPagerItem(final int pageTitleResourceId) {
    return new ViewAction() {

        @Override
        public Matcher<View> getConstraints() {
            return new TypeSafeMatcher<View>() {
                @Override
                protected boolean matchesSafely(View item) {
                    return item instanceof ViewPager;
                }

                @Override
                public void describeTo(Description description) {
                    description.appendText("is a SeekBar.");
                }
            };
        }

        @Override
        public String getDescription() {
            return null;
        }

        @Override
        public void perform(UiController uiController, View view) {
            ViewPager viewPager = (ViewPager) view;
            String expectedTitle = view.getResources().getString(pageTitleResourceId);
            PagerAdapter pagerAdapter = viewPager.getAdapter();
            for(int i = 0; i < pagerAdapter.getCount(); i++) {
                if (expectedTitle.contentEquals(pagerAdapter.getPageTitle(i))) {
                    viewPager.setCurrentItem(i);
                    return;
                }
            }
        }
    };
}
Example 9
Source File: LoopBarView.java    From LoopBar with MIT License 5 votes vote down vote up 
/**
 * You can setup {@code {@link LoopBarView#mOuterAdapter }} through {@link ViewPager} adapter.
 * Your {@link ViewPager} adapter must implement {@link ILoopBarPagerAdapter} otherwise - the icons will not be shown
 *
 * @param viewPager - viewPager, which must have {@link ILoopBarPagerAdapter}
 */
public void setupWithViewPager(@NonNull ViewPager viewPager) {
    PagerAdapter pagerAdapter = viewPager.getAdapter();
    List<ICategoryItem> categoryItems = new ArrayList<>(pagerAdapter.getCount());
    ILoopBarPagerAdapter loopBarPagerAdapter =
            pagerAdapter instanceof ILoopBarPagerAdapter
                    ? (ILoopBarPagerAdapter) pagerAdapter : null;
    for (int i = 0, size = pagerAdapter.getCount(); i < size; i++) {
        categoryItems.add(new CategoryItem(
                loopBarPagerAdapter != null ? loopBarPagerAdapter.getPageDrawable(i) : null,
                String.valueOf(pagerAdapter.getPageTitle(i))
        ));
    }
    setCategoriesAdapter(new SimpleCategoriesAdapter(categoryItems));
}
Example 10
Source File: PagerBullet.java    From PagerBullet with MIT License 5 votes vote down vote up 
private void setItemText(int index) {
    final PagerAdapter adapter = viewPager.getAdapter();
    if (null != adapter) {
        final int count = adapter.getCount();
        textIndicator.setText(
                String.format(getContext().getString(R.string.pager_bullet_separator),
                        String.valueOf(index + 1),
                        String.valueOf(count)
                )
        );
    }
}
Example 11
Source File: RtlViewPager.java    From rtl-viewpager with Apache License 2.0 5 votes vote down vote up 
@Override
public void setCurrentItem(int position) {
    PagerAdapter adapter = super.getAdapter();
    if (adapter != null && isRtl()) {
        position = adapter.getCount() - position - 1;
    }
    super.setCurrentItem(position);
}
Example 12
Source File: RtlViewPager.java    From rtl-viewpager with Apache License 2.0 5 votes vote down vote up 
@Override
public void setCurrentItem(int position, boolean smoothScroll) {
    PagerAdapter adapter = super.getAdapter();
    if (adapter != null && isRtl()) {
        position = adapter.getCount() - position - 1;
    }
    super.setCurrentItem(position, smoothScroll);
}
Example 13
Source File: RtlViewPager.java    From rtl-viewpager with Apache License 2.0 5 votes vote down vote up 
@Override
public int getCurrentItem() {
    int item = super.getCurrentItem();
    PagerAdapter adapter = super.getAdapter();
    if (adapter != null && isRtl()) {
        item = adapter.getCount() - item - 1;
    }
    return item;
}
Example 14
Source File: OverScrollViewPager.java    From AsteroidOSSync with GNU General Public License v3.0 5 votes vote down vote up 
private boolean canOverScrollAtEnd() {
    SwipeableViewPager viewPager = getOverScrollView();
    PagerAdapter adapter = viewPager.getAdapter();
    if (null != adapter && adapter.getCount() > 0) {
        if (viewPager.alphaExitTransitionEnabled() && viewPager.getCurrentItem() == adapter.getCount() - 1) {
            return true;
        }
        return false;
    }

    return false;
}
Example 15
Source File: AutoRefreshUtil.java    From SmoothRefreshLayout with MIT License 5 votes vote down vote up 
public void autoLoadMore(boolean atOnce, boolean autoRefreshUseSmoothScroll) {
    if (mRefreshLayout != null) {
        if (mStatus != SmoothRefreshLayout.SR_STATUS_INIT) return;
        if (mRefreshLayout.isNotYetInEdgeCannotMoveFooter()) {
            if (mRefreshLayout.isVerticalOrientation()) {
                ScrollCompat.flingCompat(mTargetView, mMaximumFlingVelocity);
            } else {
                if (mTargetView instanceof ViewPager) {
                    final ViewPager pager = (ViewPager) mTargetView;
                    final PagerAdapter adapter = pager.getAdapter();
                    if (adapter == null) return;
                    if (adapter.getCount() <= 0) return;
                    pager.setCurrentItem(adapter.getCount() - 1, true);
                } else {
                    HorizontalScrollCompat.flingCompat(mTargetView, mMaximumFlingVelocity);
                }
            }
            mNeedToTriggerLoadMore = true;
            mCachedActionAtOnce = atOnce;
            mCachedAutoRefreshUseSmoothScroll = autoRefreshUseSmoothScroll;
        } else {
            mRefreshLayout.autoLoadMore(atOnce, autoRefreshUseSmoothScroll);
            mNeedToTriggerLoadMore = false;
            mCachedActionAtOnce = false;
            mCachedAutoRefreshUseSmoothScroll = false;
        }
        ViewCompat.postOnAnimation(mRefreshLayout, this);
    }
}
Example 16
Source File: AutoRefreshUtil.java    From SmoothRefreshLayout with MIT License 5 votes vote down vote up 
public void autoRefresh(boolean atOnce, boolean autoRefreshUseSmoothScroll) {
    if (mRefreshLayout != null) {
        if (mStatus != SmoothRefreshLayout.SR_STATUS_INIT) return;
        if (mRefreshLayout.isNotYetInEdgeCannotMoveHeader()) {
            if (mRefreshLayout.isVerticalOrientation()) {
                ScrollCompat.flingCompat(mTargetView, -mMaximumFlingVelocity);
            } else {
                if (ViewCatcherUtil.isViewPager(mTargetView)) {
                    final ViewPager pager = (ViewPager) mTargetView;
                    final PagerAdapter adapter = pager.getAdapter();
                    if (adapter == null) return;
                    if (adapter.getCount() <= 0) return;
                    pager.setCurrentItem(0, true);
                } else {
                    HorizontalScrollCompat.flingCompat(mTargetView, -mMaximumFlingVelocity);
                }
            }
            mNeedToTriggerRefresh = true;
            mCachedActionAtOnce = atOnce;
            mCachedAutoRefreshUseSmoothScroll = autoRefreshUseSmoothScroll;
        } else {
            mRefreshLayout.autoRefresh(atOnce, autoRefreshUseSmoothScroll);
            mNeedToTriggerRefresh = false;
            mCachedActionAtOnce = false;
            mCachedAutoRefreshUseSmoothScroll = false;
        }
        ViewCompat.postOnAnimation(mRefreshLayout, this);
    }
}
Example 17
Source File: PagerBullet.java    From PagerBullet with MIT License 4 votes vote down vote up 
private boolean hasSeparator() {
    final PagerAdapter pagerAdapter = viewPager.getAdapter();
    return null != pagerAdapter && pagerAdapter.getCount() > offset;
}
Example 18
Source File: NoScrollViewPager.java    From AndroidProject with Apache License 2.0 4 votes vote down vote up 
public int getCount() {
    PagerAdapter adapter = getAdapter();
    return adapter != null ? adapter.getCount() : 0;
}
Example 19
Source File: TabPageIndicator.java    From material with Apache License 2.0 4 votes vote down vote up 
private void notifyDataSetChanged() {
       mTabContainer.removeAllViews();

       PagerAdapter adapter = mViewPager.getAdapter();
       final int count = adapter.getCount();

       if (mSelectedPosition > count)
           mSelectedPosition = count - 1;

       for (int i = 0; i < count; i++) {
           CharSequence title = adapter.getPageTitle(i);
           if (title == null)
               title = "NULL";

           CheckedTextView tv = new CheckedTextView(getContext());
           tv.setCheckMarkDrawable(null);
           tv.setText(title);
           tv.setGravity(Gravity.CENTER);
           if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
               tv.setTextAlignment(CheckedTextView.TEXT_ALIGNMENT_GRAVITY);
           }
           tv.setTextAppearance(getContext(), mTextAppearance);
           if(mTabSingleLine)
               tv.setSingleLine(true);
           else {
               tv.setSingleLine(false);
               tv.setMaxLines(2);
           }
           tv.setEllipsize(TruncateAt.END);
           tv.setOnClickListener(this);
           tv.setTag(i);
           if(mTabRippleStyle > 0)
               ViewUtil.setBackground(tv, new RippleDrawable.Builder(getContext(), mTabRippleStyle).build());

           tv.setPadding(mTabPadding, 0, mTabPadding, 0);
           mTabContainer.addView(tv, new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.MATCH_PARENT));
       }
       
       setCurrentItem(mSelectedPosition);
       requestLayout();
}
Example 20
Source File: SlidingTabLayout.java    From arcusandroid with Apache License 2.0 4 votes vote down vote up 
private void populateTabStrip() {
    final PagerAdapter adapter = mViewPager.getAdapter();
    final OnClickListener tabClickListener = new TabClickListener();

    for (int i = 0; i < adapter.getCount(); i++) {
        View tabView = null;
        Version1TextView tabTitleView = null;

        if (mTabViewLayoutId != 0) {
            // If there is a custom tab view layout id set, try and inflate it
            tabView = LayoutInflater.from(getContext()).inflate(mTabViewLayoutId, mTabStrip,
                    false);
            tabTitleView = (Version1TextView) tabView.findViewById(mTabViewTextViewId);
        }

        if (tabView == null) {
            tabView = createDefaultTabView(getContext());
        }

        if (tabTitleView == null && Version1TextView.class.isInstance(tabView)) {
            tabTitleView = (Version1TextView) tabView;
        }

        if (mDistributeEvenly) {
            LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) tabView.getLayoutParams();
            lp.width = 0;
            lp.weight = 1;
        }
        tabTitleView.setText(adapter.getPageTitle(i));
        tabTitleView.setTextSize(12);
        tabTitleView.setTypeface(FontUtils.getDemi(getContext()));
        tabTitleView.setTextColor(getResources().getColorStateList(R.color.sliding_tab_text_color_selector));
        tabView.setOnClickListener(tabClickListener);
        String desc = mContentDescriptions.get(i, null);
        if (desc != null) {
            tabView.setContentDescription(desc);
        }

        mTabStrip.addView(tabView);
        if (i == mViewPager.getCurrentItem()) {
            tabView.setSelected(true);
        }
    }
}