*/
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
*
