*/ public void onDropDownComplete() { if (isDropDownStyle) { setHeaderStatusClickToLoad(); if (headerLayout.getBottom() > 0) { invalidateViews(); setSecondPositionVisible(); } } } /** * on bottom begin, adjust view status */ private void onBottomBegin() { if (isOnBottomStyle) { if (isShowFooterProgressBar) { footerProgressBar.setVisibility(View.VISIBLE); } footerButton.setText(footerLoadingText); footerButton.setEnabled(false); } } /** * on bottom loading, you can call it by manual, but you should manual call onBottomComplete at the same time. */ public void onBottom() { if (isOnBottomStyle && !isOnBottomLoading) { isOnBottomLoading = true; onBottomBegin(); footerButton.performClick(); } } /** * on bottom load complete, restore view status */ public void onBottomComplete() { if (isOnBottomStyle) { if (isShowFooterProgressBar) { footerProgressBar.setVisibility(View.GONE); } footerButton.setEnabled(true); if (!hasMore) { footerButton.setText(footerNoMoreText); } else { footerButton.setText(footerDefaultText); } isOnBottomLoading = false; } } /** * OnDropDownListener, called when header released * * @author <a href="http://www.trinea.cn" target="_blank">Trinea</a> 2012-5-31 */ public interface OnDropDownListener { /** * called when header released */ public void onDropDown(); } /** * set second position visible(index is 1), because first position is header layout */ public void setSecondPositionVisible() { if (getAdapter() != null && getAdapter().getCount() > 0 && getFirstVisiblePosition() == 0) { setSelection(1); } } /** * set whether has more. if hasMore is false, onBottm will not be called when listView scroll to bottom * * @param hasMore */ public void setHasMore(boolean hasMore) { this.hasMore = hasMore; } /** * get whether has more * * @return */ public boolean isHasMore() { return hasMore; } /** * get header layout view * * @return */ public RelativeLayout getHeaderLayout() { return headerLayout; } /** * get footer layout view * * @return */ public RelativeLayout getFooterLayout() { return footerLayout; } /** * get rate about drop down distance and header padding top when drop down * * @return headerPaddingTopRate */ public float getHeaderPaddingTopRate() { return headerPaddingTopRate; } /** * set rate about drop down distance and header padding top when drop down * * @param headerPaddingTopRate */ public void setHeaderPaddingTopRate(float headerPaddingTopRate) { this.headerPaddingTopRate = headerPaddingTopRate; } /** * get min distance which header can release to loading * * @return headerReleaseMinDistance */ public int getHeaderReleaseMinDistance() { return headerReleaseMinDistance; } /** * set min distance which header can release to loading * * @param headerReleaseMinDistance */ public void setHeaderReleaseMinDistance(int headerReleaseMinDistance) { this.headerReleaseMinDistance = headerReleaseMinDistance; } /*** * get header default text, default is R.string.drop_down_list_header_default_text * * @return */ public String getHeaderDefaultText() { return headerDefaultText; } /** * set header default text, default is R.string.drop_down_list_header_default_text * * @param headerDefaultText */ public void setHeaderDefaultText(String headerDefaultText) { this.headerDefaultText = headerDefaultText; if (headerText != null && currentHeaderStatus == HEADER_STATUS_CLICK_TO_LOAD) { headerText.setText(headerDefaultText); } } /** * get header pull text, default is R.string.drop_down_list_header_pull_text * * @return */ public String getHeaderPullText() { return headerPullText; } /** * set header pull text, default is R.string.drop_down_list_header_pull_text * * @param headerPullText */ public void setHeaderPullText(String headerPullText) { this.headerPullText = headerPullText; } /** * get header release text, default is R.string.drop_down_list_header_release_text * * @return */ public String getHeaderReleaseText() { return headerReleaseText; } /** * set header release text, default is R.string.drop_down_list_header_release_text * * @param headerReleaseText */ public void setHeaderReleaseText(String headerReleaseText) { this.headerReleaseText = headerReleaseText; } /** * get header loading text, default is R.string.drop_down_list_header_loading_text * * @return */ public String getHeaderLoadingText() { return headerLoadingText; } /** * set header loading text, default is R.string.drop_down_list_header_loading_text * * @param headerLoadingText */ public void setHeaderLoadingText(String headerLoadingText) { this.headerLoadingText = headerLoadingText; } /** * get footer default text, default is R.string.drop_down_list_footer_default_text * * @return */ public String getFooterDefaultText() { return footerDefaultText; } /** * set footer default text, default is R.string.drop_down_list_footer_default_text * * @param footerDefaultText */ public void setFooterDefaultText(String footerDefaultText) { this.footerDefaultText = footerDefaultText; if (footerButton != null && footerButton.isEnabled()) { footerButton.setText(footerDefaultText); } } /** * get footer loading text, default is R.string.drop_down_list_footer_loading_text * * @return */ public String getFooterLoadingText() { return footerLoadingText; } /** * set footer loading text, default is R.string.drop_down_list_footer_loading_text * * @param footerLoadingText */ public void setFooterLoadingText(String footerLoadingText) { this.footerLoadingText = footerLoadingText; } /** * get footer no more text, default is R.string.drop_down_list_footer_no_more_text * * @return */ public String getFooterNoMoreText() { return footerNoMoreText; } /** * set footer no more text, default is R.string.drop_down_list_footer_no_more_text * * @param footerNoMoreText */ public void setFooterNoMoreText(String footerNoMoreText) { this.footerNoMoreText = footerNoMoreText; } /** status which you can click to load, init satus **/ public static final int HEADER_STATUS_CLICK_TO_LOAD = 1; /** * status which you can drop down and then release to excute onDropDownListener, when height of header layout lower * than a value **/ public static final int HEADER_STATUS_DROP_DOWN_TO_LOAD = 2; /** status which you can release to excute onDropDownListener, when height of header layout higher than a value **/ public static final int HEADER_STATUS_RELEASE_TO_LOAD = 3; /** status which is loading **/ public static final int HEADER_STATUS_LOADING = 4; /** * set header status to {@link #HEADER_STATUS_CLICK_TO_LOAD} */ private void setHeaderStatusClickToLoad() { if (currentHeaderStatus != HEADER_STATUS_CLICK_TO_LOAD) { resetHeaderPadding(); headerImage.clearAnimation(); headerImage.setVisibility(View.GONE); headerProgressBar.setVisibility(View.GONE); headerText.setText(headerDefaultText); currentHeaderStatus = HEADER_STATUS_CLICK_TO_LOAD; } } /** * set header status to {@link #HEADER_STATUS_DROP_DOWN_TO_LOAD} */ private void setHeaderStatusDropDownToLoad() { if (currentHeaderStatus != HEADER_STATUS_DROP_DOWN_TO_LOAD) { headerImage.setVisibility(View.VISIBLE); if (currentHeaderStatus != HEADER_STATUS_CLICK_TO_LOAD) { headerImage.clearAnimation(); headerImage.startAnimation(reverseFlipAnimation); } headerProgressBar.setVisibility(View.GONE); headerText.setText(headerPullText); if (isVerticalFadingEdgeEnabled()) { setVerticalScrollBarEnabled(false); } currentHeaderStatus = HEADER_STATUS_DROP_DOWN_TO_LOAD; } } /** * set header status to {@link #HEADER_STATUS_RELEASE_TO_LOAD} */ private void setHeaderStatusReleaseToLoad() { if (currentHeaderStatus != HEADER_STATUS_RELEASE_TO_LOAD) { headerImage.setVisibility(View.VISIBLE); headerImage.clearAnimation(); headerImage.startAnimation(flipAnimation); headerProgressBar.setVisibility(View.GONE); headerText.setText(headerReleaseText); currentHeaderStatus = HEADER_STATUS_RELEASE_TO_LOAD; } } /** * set header status to {@link #HEADER_STATUS_LOADING} */ private void setHeaderStatusLoading() { if (currentHeaderStatus != HEADER_STATUS_LOADING) { resetHeaderPadding(); headerImage.setVisibility(View.GONE); headerImage.clearAnimation(); headerProgressBar.setVisibility(View.VISIBLE); headerText.setText(headerLoadingText); currentHeaderStatus = HEADER_STATUS_LOADING; setSelection(0); } } /** * adjust header padding according to motion event * * @param ev */ private void adjustHeaderPadding(MotionEvent ev) { // adjust header padding according to motion event history int pointerCount = ev.getHistorySize(); if (isVerticalFadingEdgeEnabled()) { setVerticalScrollBarEnabled(false); } for (int i = 0; i < pointerCount; i++) { if (currentHeaderStatus == HEADER_STATUS_DROP_DOWN_TO_LOAD || currentHeaderStatus == HEADER_STATUS_RELEASE_TO_LOAD) { headerLayout.setPadding(headerLayout.getPaddingLeft(), (int)(((ev.getHistoricalY(i) - actionDownPointY) - headerOriginalHeight) / headerPaddingTopRate), headerLayout.getPaddingRight(), headerLayout.getPaddingBottom()); } } } /** * reset header padding */ private void resetHeaderPadding() { headerLayout.setPadding(headerLayout.getPaddingLeft(), headerOriginalTopPadding, headerLayout.getPaddingRight(), headerLayout.getPaddingBottom()); } /** * measure header layout *