android.widget.AbsListView#getAdapter

Source File: ViewUtil.java From AndroidStudyDemo with GNU General Public License v2.0

6 votes

/**
 * get AbsListView height according to every children
 *
 * @param view
 * @return
 */
public static int getAbsListViewHeightBasedOnChildren(AbsListView view) {
    ListAdapter adapter;
    if (view == null || (adapter = view.getAdapter()) == null) {
        return 0;
    }

    int height = 0;
    for (int i = 0; i < adapter.getCount(); i++) {
        View item = adapter.getView(i, null, view);
        if (item instanceof ViewGroup) {
            item.setLayoutParams(new LayoutParams(
                    LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
        }
        item.measure(0, 0);
        height += item.getMeasuredHeight();
    }
    height += view.getPaddingTop() + view.getPaddingBottom();
    return height;
}

Source File: ScrollingPauseLoadManager.java From sketch with Apache License 2.0

6 votes

@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
    if (AppConfig.INSTANCE.getBoolean(view.getContext(), AppConfig.Key.SCROLLING_PAUSE_LOAD) && view.getAdapter() != null) {
        ListAdapter listAdapter = view.getAdapter();
        if (listAdapter instanceof WrapperListAdapter) {
            listAdapter = ((WrapperListAdapter) listAdapter).getWrappedAdapter();
        }
        if (listAdapter instanceof BaseAdapter) {
            if (scrollState == AbsListView.OnScrollListener.SCROLL_STATE_TOUCH_SCROLL) {
                if (!sketch.getConfiguration().isPauseLoadEnabled()) {
                    sketch.getConfiguration().setPauseLoadEnabled(true);
                }
            } else if (scrollState == AbsListView.OnScrollListener.SCROLL_STATE_IDLE) {
                if (sketch.getConfiguration().isPauseLoadEnabled()) {
                    sketch.getConfiguration().setPauseLoadEnabled(false);
                    ((BaseAdapter) listAdapter).notifyDataSetChanged();
                }
            }
        }
    }

    if (absListScrollListener != null) {
        absListScrollListener.onScrollStateChanged(view, scrollState);
    }
}

Source File: AbsListScrollSize.java From Paralloid with Apache License 2.0

6 votes

/**
     * This method is by no means accurate, and Will only work to any degree of accuracy if your list items
     * are the same height.
     * Otherwise it becomes vastly more difficult to calculate the correct height.
     *
     * @param listView listView to get height of, if no adapter is attached then nothing will happen.
     * @return 0 for failure.
     */
    public static int calculateApproximateHeight(AbsListView listView) {
        final ListAdapter adapter = listView.getAdapter();
        int onScreenHeight = 0, totalHeight = 0;
        final int totalCount = adapter.getCount();
        final int visibleCount = listView.getLastVisiblePosition() - listView.getFirstVisiblePosition();
        if (totalCount > 0) {
            View view;
            for (int i = 0; i < visibleCount; i++) {
//                final View view = adapter.getView(0, null, listView);
                view = listView.getChildAt(i);
//                view.measure(
//                        View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED),
//                        View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
                onScreenHeight += view.getMeasuredHeight();
            }
            // Get the average on screen height, then multiply it up.
            totalHeight = (onScreenHeight / visibleCount) * totalCount;
            // Add the divider height.
            if (listView instanceof ListView) {
                totalHeight += ((ListView) listView).getDividerHeight() * (totalCount - 1);
            }
        }
        return totalHeight;
    }

Source File: AbsListScrollSize.java From 30-android-libraries-in-30-days with Apache License 2.0

6 votes

/**
     * This method is by no means accurate, and Will only work to any degree of accuracy if your list items
     * are the same height.
     * Otherwise it becomes vastly more difficult to calculate the correct height.
     *
     * @param listView listView to get height of, if no adapter is attached then nothing will happen.
     * @return 0 for failure.
     */
    public static int calculateApproximateHeight(AbsListView listView) {
        final ListAdapter adapter = listView.getAdapter();
        int onScreenHeight = 0, totalHeight = 0;
        final int totalCount = adapter.getCount();
        final int visibleCount = listView.getLastVisiblePosition() - listView.getFirstVisiblePosition();
        if (totalCount > 0) {
            View view;
            for (int i = 0; i < visibleCount; i++) {
//                final View view = adapter.getView(0, null, listView);
                view = listView.getChildAt(i);
//                view.measure(
//                        View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED),
//                        View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
                onScreenHeight += view.getMeasuredHeight();
            }
            // Get the average on screen height, then multiply it up.
            totalHeight = (onScreenHeight / visibleCount) * totalCount;
            // Add the divider height.
            if (listView instanceof ListView) {
                totalHeight += ((ListView) listView).getDividerHeight() * (totalCount - 1);
            }
        }
        return totalHeight;
    }

Source File: FolderFragment.java From filemanager with MIT License

6 votes

@Override
public void onScroll(AbsListView view, int firstVisibleItem,
		int visibleItemCount, int totalItemCount)
{		
	if (firstVisibleItem < this.topVisibleItem - DISTANCE_TO_HIDE_ACTIONBAR)
	{
		setActionbarVisibility(true);
		this.topVisibleItem = firstVisibleItem;
	}
	else if (firstVisibleItem > this.topVisibleItem + DISTANCE_TO_HIDE_ACTIONBAR)
	{
		setActionbarVisibility(false);
		this.topVisibleItem = firstVisibleItem;
	}
	
	ListAdapter adapter = view.getAdapter();
	if (adapter instanceof HeaderViewListAdapter)
	{
		HeaderViewListAdapter headerViewListAdapter = (HeaderViewListAdapter) adapter;
		if (headerViewListAdapter.getWrappedAdapter() instanceof FileCardAdapter)
		{
			int startPrefetch = firstVisibleItem + visibleItemCount-headerViewListAdapter.getHeadersCount();
			((FileCardAdapter) headerViewListAdapter.getWrappedAdapter()).prefetchImages(startPrefetch, visibleItemCount);
		}
	}
}

Source File: ViewUtils.java From mobile-manager-tool with MIT License

6 votes

/**
 * get AbsListView height according to every children
 * 
 * @param view
 * @return
 */
public static int getAbsListViewHeightBasedOnChildren(AbsListView view) {
    ListAdapter adapter;
    if (view == null || (adapter = view.getAdapter()) == null) {
        return 0;
    }

    int height = 0;
    for (int i = 0; i < adapter.getCount(); i++) {
        View item = adapter.getView(i, null, view);
        if (item instanceof ViewGroup) {
            item.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
        }
        item.measure(0, 0);
        height += item.getMeasuredHeight();
    }
    height += view.getPaddingTop() + view.getPaddingBottom();
    return height;
}

Source File: SlidingLayout.java From LLApp with Apache License 2.0

5 votes

/**
 * 判断View是否可以下拉
 * @return canChildScrollDown
 */
public boolean canChildScrollDown() {
    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
        if (mTargetView instanceof AbsListView) {
            final AbsListView absListView = (AbsListView) mTargetView;
            return absListView.getChildCount() > 0 && absListView.getAdapter() != null
                    && (absListView.getLastVisiblePosition() < absListView.getAdapter().getCount() - 1 || absListView.getChildAt(absListView.getChildCount() - 1)
                    .getBottom() < absListView.getPaddingBottom());
        } else {
            return ViewCompat.canScrollVertically(mTargetView, 1) || mTargetView.getScrollY() > 0;
        }
    } else {
        return ViewCompat.canScrollVertically(mTargetView, 1);
    }
}

Source File: ScrollingUtil.java From TwinklingRefreshLayout with Apache License 2.0

5 votes

public static void scrollToBottom(final AbsListView absListView) {
    if (absListView != null) {
        if (absListView.getAdapter() != null && absListView.getAdapter().getCount() > 0) {
            absListView.post(new Runnable() {
                @Override
                public void run() {
                    absListView.setSelection(absListView.getAdapter().getCount() - 1);
                }
            });
        }
    }
}

Source File: BGARefreshLayout.java From AndroidStudyDemo with GNU General Public License v2.0

5 votes

public boolean shouldHandleAbsListViewLoadingMore(AbsListView absListView) {
    if (mIsLoadingMore || mCurrentRefreshStatus == RefreshStatus.REFRESHING || mLoadMoreFooterView == null || mDelegate == null || absListView == null ||  absListView.getAdapter() == null || absListView.getAdapter().getCount() == 0) {
        return false;
    }

    int lastChildBottom = 0;
    if (absListView.getChildCount() > 0) {
        // 如果AdapterView的子控件数量不为0，获取最后一个子控件的bottom
        lastChildBottom = absListView.getChildAt(absListView.getChildCount() - 1).getBottom();
    }
    return absListView.getLastVisiblePosition() == absListView.getAdapter().getCount() - 1 && lastChildBottom <= absListView.getMeasuredHeight();
}

Source File: AbViewUtil.java From FimiX8-RE with MIT License

5 votes

public static int getAbsListViewHeight(AbsListView absListView, int lineNumber, int verticalSpace) {
    int totalHeight = 0;
    int w = MeasureSpec.makeMeasureSpec(0, 0);
    int h = MeasureSpec.makeMeasureSpec(0, 0);
    absListView.measure(w, h);
    ListAdapter mListAdapter = (ListAdapter) absListView.getAdapter();
    if (mListAdapter == null) {
        return 0;
    }
    int count = mListAdapter.getCount();
    View listItem;
    if (absListView instanceof ListView) {
        for (int i = 0; i < count; i++) {
            listItem = mListAdapter.getView(i, null, absListView);
            listItem.measure(w, h);
            totalHeight += listItem.getMeasuredHeight();
        }
        if (count == 0) {
            totalHeight = verticalSpace;
        } else {
            totalHeight += ((ListView) absListView).getDividerHeight() * (count - 1);
        }
    } else if (absListView instanceof GridView) {
        int remain = count % lineNumber;
        if (remain > 0) {
            remain = 1;
        }
        if (mListAdapter.getCount() == 0) {
            totalHeight = verticalSpace;
        } else {
            listItem = mListAdapter.getView(0, null, absListView);
            listItem.measure(w, h);
            int line = (count / lineNumber) + remain;
            totalHeight = (listItem.getMeasuredHeight() * line) + ((line - 1) * verticalSpace);
        }
    }
    return totalHeight;
}

Source File: SlidingLayout.java From CloudReader with Apache License 2.0

5 votes

/**
 * 判断View是否可以下拉
 *
 * @return canChildScrollDown
 */
public boolean canChildScrollDown() {
    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
        if (mTargetView instanceof AbsListView) {
            final AbsListView absListView = (AbsListView) mTargetView;
            return absListView.getChildCount() > 0 && absListView.getAdapter() != null
                    && (absListView.getLastVisiblePosition() < absListView.getAdapter().getCount() - 1 || absListView.getChildAt(absListView.getChildCount() - 1)
                    .getBottom() < absListView.getPaddingBottom());
        } else {
            return ViewCompat.canScrollVertically(mTargetView, 1) || mTargetView.getScrollY() > 0;
        }
    } else {
        return ViewCompat.canScrollVertically(mTargetView, 1);
    }
}

Source File: DPullRefreshLayout.java From Pas with Apache License 2.0

5 votes

/**
 * ListView滚动底部是否
 * @param absListView
 * @return
 */
public boolean shouldHandleAbsListViewLoadingMore(AbsListView absListView) {
    if (mIsLoadingMore || mCurrentRefreshStatus == RefreshStatus.REFRESHING ||
            mLoadMoreFooterView == null || mDelegate == null || absListView == null
            || absListView.getAdapter() == null || absListView.getAdapter().getCount() == 0) {
        return false;
    }

    int lastChildBottom = 0;
    if (absListView.getChildCount() > 0) {
        // 如果AdapterView的子控件数量不为0，获取最后一个子控件的bottom
        lastChildBottom = absListView.getChildAt(absListView.getChildCount() - 1).getBottom();
    }
    return absListView.getLastVisiblePosition() == absListView.getAdapter().getCount() - 1 && lastChildBottom <= absListView.getMeasuredHeight();
}

Source File: ScrollingUtil.java From Pas with Apache License 2.0

5 votes

public static void scrollToBottom(final AbsListView absListView) {
    if (absListView != null) {
        if (absListView.getAdapter() != null && absListView.getAdapter().getCount() > 0) {
            absListView.post(new Runnable() {
                @Override
                public void run() {
                    absListView.setSelection(absListView.getAdapter().getCount() - 1);
                }
            });
        }
    }
}

Source File: ScrollingUtil.java From TwinklingRefreshLayout with Apache License 2.0

5 votes

public static boolean isAbsListViewToBottom(AbsListView absListView) {
    if (absListView != null && absListView.getAdapter() != null && absListView.getChildCount() > 0 && absListView.getLastVisiblePosition() == absListView.getAdapter().getCount() - 1) {
        View lastChild = absListView.getChildAt(absListView.getChildCount() - 1);

        return lastChild.getBottom() <= absListView.getMeasuredHeight();
    }
    return false;
}

Source File: ScrollingUtil.java From AgentWebX5 with Apache License 2.0

5 votes

public static void scrollToBottom(final AbsListView absListView) {
    if (absListView != null) {
        if (absListView.getAdapter() != null && absListView.getAdapter().getCount() > 0) {
            absListView.post(new Runnable() {
                @Override
                public void run() {
                    absListView.setSelection(absListView.getAdapter().getCount() - 1);
                }
            });
        }
    }
}

Source File: ListViewFeeds.java From rss with GNU General Public License v3.0

5 votes

@Override
public
void onScrollStateChanged(AbsListView view, int scrollState)
{
    FeedsActivity activity = (FeedsActivity) view.getContext();

    if(SCROLL_STATE_TOUCH_SCROLL == scrollState || SCROLL_STATE_IDLE == scrollState)
    {
        Adapter adapter = view.getAdapter();
        int first = view.getFirstVisiblePosition();
        int last = view.getLastVisiblePosition();

        for(int i = 0; last - first >= i; i++)
        {
            View viewItem = view.getChildAt(i);

            if(null != viewItem && viewItem.isShown() && 0 <= viewItem.getTop())
            {
                FeedItem item = (FeedItem) adapter.getItem(first + i);
                activity.readItem(item.m_time);
            }
        }
    }
    if(SCROLL_STATE_IDLE == scrollState)
    {
        AsyncNavigationAdapter.run(activity);
    }
}

Source File: ScrollingUtil.java From AgentWebX5 with Apache License 2.0

5 votes

public static boolean isAbsListViewToBottom(AbsListView absListView) {
    if (absListView != null && absListView.getAdapter() != null && absListView.getChildCount() > 0 && absListView.getLastVisiblePosition() == absListView.getAdapter().getCount() - 1) {
        View lastChild = absListView.getChildAt(absListView.getChildCount() - 1);

        return lastChild.getBottom() <= absListView.getMeasuredHeight();
    }
    return false;
}

Source File: SlidingLayout.java From stynico with MIT License

5 votes

/**
 * 判断View是否可以下拉
 * @return canChildScrollDown
 */
public boolean canChildScrollDown() {
    if (android.os.Build.VERSION.SDK_INT < Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
        if (mTargetView instanceof AbsListView) {
            final AbsListView absListView = (AbsListView) mTargetView;
            return absListView.getChildCount() > 0 && absListView.getAdapter() != null
                    && (absListView.getLastVisiblePosition() < absListView.getAdapter().getCount() - 1 || absListView.getChildAt(absListView.getChildCount() - 1)
                    .getBottom() < absListView.getPaddingBottom());
        } else {
            return ViewCompat.canScrollVertically(mTargetView, 1) || mTargetView.getScrollY() > 0;
        }
    } else {
        return ViewCompat.canScrollVertically(mTargetView, 1);
    }
}

Java Code Examples for android.widget.AbsListView#getAdapter()