Pull-down refresh and pull-up load more, pull-down refresh load more

Pull-down refresh and pull-up load more, pull-down refresh load more

The Code is as follows:

/*** Refresh and load more in the ListView drop-down list ** <p> ** <strong> change description: </strong> * <p> * If the OnRefreshListener interface and OnLoadMoreListener interface are set by default * <p> * three remaining flags: <br> * mIsAutoLoadMore (whether to automatically load more) <br> * mIsMoveToFirstItemAfterRefresh (whether to display the first Item after the pull-down refresh) <br> * mIsDoRefreshOnWindowFocused (when the control of the ListView is displayed on the screen, whether to directly display refreshing ...) ** @ author lee */public class MongoPullToRefreshOrLoadMoreListView extends ListView implementsOnScrollListe Ner {/** display formatted date template */private final static String DATE_FORMAT_STR = "yyyy MM dd HH: mm "; /** RATIO of actual padding distance to the offset on the Interface */private final static int RATIO = 3; // ============================== the following four constants are // the pull-down refresh status id ======================================// ** release refresh */private final static int RELEASE_TO_REFRESH = 0; /** pull-down refresh */private final static int PULL_TO_REFRESH = 1;/** REFRESHING */private final static int REFRESHING = 2 ;/ ** The refresh is complete or nothing is done, and the original status is restored. */Private final static int DONE = 3; // ============================ the following three constants are // load more status ID ====================================================/** loading in progress */ private final static int ENDINT_LOADING = 1; /** manually refresh */private final static int ENDINT_MANUAL_LOAD_DONE = 2;/** automatically refresh */private final static int ENDINT_AUTO_LOAD_DONE = 3; /*** <strong> pull-down refresh the real-time status flag of HeadView </strong> *** <p> * 0: RELEASE_TO_REFRESH; * <p> * 1: PULL_To_R EFRESH; * <p> * 2: REFRESHING; * <p> * 3: DONE; **/private int mHeadState; /*** <strong> load the real-time status flag of more FootView (EndView) </strong> *** <p> * 0: Complete/Wait For refresh; * <p> * 1: loading */private int mEndState; /// ===================================================== Flag // ======================================================//*** can load more */private boolean mCanLoadMore = false; /** you can pull down and refresh */private boolean mCanRefresh = false;/** can you automatically load more data? (Note: first determine whether there are more loads. If not, this flag is meaningless.) */private boolean mIsAutoLoadMore = false; /** whether to display the first Item */private boolean mIsMoveToFirstItemAfterRefresh = false after the pull-down refresh;/** when the control of the ListView is displayed on the screen, whether to directly display refreshing... */private boolean mIsDoRefreshOnUIChanged = false; public boolean isCanLoadMore () {return mCanLoadMore;} public void setCanLoadMore (boolean pCanLoadMore) {mCanLoadMore = pCanLoadMore; if (mCanLoadMore & getFoo TerViewsCount () = 0) {addFooterView ();} else {if (null! = MEndRootView) {removeFooterView (mEndRootView) ;}} public boolean isCanRefresh () {return empty;} public void setCanRefresh (boolean pCanRefresh) {mCanRefresh = empty;} public boolean isAutoLoadMore () {return mIsAutoLoadMore;} public void setAutoLoadMore (boolean pIsAutoLoadMore) {mIsAutoLoadMore = pIsAutoLoadMore;} public boolean isMoveToFirstItemAfterRefresh () {return mIsMoveToFirstItemAfter Refresh;} public void initialize (boolean empty) {empty = empty;} public boolean empty () {return mIsDoRefreshOnUIChanged;} public void setDoRefreshOnUIChanged (boolean empty) {mIsDoRefreshOnUIChanged = empty ;} // ============================================== ============================================================ Private layoutInflater mInflater; private LinearLayout mHeadRootView; private TextView mTipsTextView; private TextView overview; private ImageView mArrowImageView; private ProgressBar mProgressBar; private View mEndRootView; private ProgressBar mEndLoadProgressBar; private TextView overview; /** headView animation */private RotateAnimation mArrowAnim ;/ ** HeadView reverse animation */private RotateAnimation mArrowReverseAnim;/** it is used to ensure that the value of startY is recorded only once in a complete touch event */private boolean mIsRecored; private int mHeadViewWidth; private int mHeadViewHeight; private int mStartY; private boolean mIsBack; private int mFirstItemIndex; private int mLastItemIndex; private int mCount; @ SuppressWarnings ("unused") private boolean mEnoughCount; // how many screens are filled? Private OnRefreshListener mRefreshListener; private OnLoadMoreListener mLoadMoreListener; private String mLabel; public String getLabel () {return mLabel;} public void setLabel (String pLabel) {mLabel = pLabel ;} public aggregate (Context pContext) {super (pContext); init (pContext);} public MongoPullToRefreshOrLoadMoreListView (Context pContext, AttributeSet pAttrs) {super (pContext, pA Ttrs); init (pContext);} public MongoPullToRefreshOrLoadMoreListView (Context pContext, AttributeSet pAttrs, int pDefStyle) {super (pContext, pAttrs, pDefStyle); init (pContext );} /*** initialization operation ** @ param pContext */private void init (Context pContext) {// final ViewConfiguration _ ViewConfiguration = // ViewConfiguration. get (pContext); // mTouchSlop = _ ViewConfiguration. getScaledTouchSlop (); setCacheColorHint (pC Ontext. getResources (). getColor (R. color. transparent); setOnLongClickListener (null); mInflater = LayoutInflater. from (pContext); addHeadView (); setOnScrollListener (this); initPullImageAnimation (0);}/*** Add the HeadView refreshed by the drop-down list */private void addHeadView () {mHeadRootView = (LinearLayout) mInflater. inflate (R. layout. pull_to_refresh_head2, null); mArrowImageView = (ImageView) mHeadRootView. findViewById (R. id. head_arr OwImageView); mArrowImageView. setMinimumWidth (70); mArrowImageView. setMinimumHeight (50); mProgressBar = (ProgressBar) mHeadRootView. findViewById (R. id. head_progressBar); mTipsTextView = (TextView) mHeadRootView. findViewById (R. id. head_tipsTextView); mLastUpdatedTextView = (TextView) mHeadRootView. findViewById (R. id. head_lastUpdatedTextView); measureView (mHeadRootView); mHeadViewHeight = mHeadRootView. getMea SuredHeight (); mHeadViewWidth = mHeadRootView. getMeasuredWidth (); mHeadRootView. setPadding (0,-1 * mHeadViewHeight, 0, 0); mHeadRootView. invalidate (); addHeaderView (mHeadRootView, null, false); mHeadState = DONE; changeHeadViewByState ();}/*** add and load more FootView */private void addFooterView () {mEndRootView = mInflater. inflate (R. layout. pull_to_refresh_load_more, null); mEndRootView. setVisibility (View. VISIBLE ); MEndLoadProgressBar = (ProgressBar) mEndRootView. findViewById (R. id. pull_to_refresh_progress); mEndLoadTipsTextView = (TextView) mEndRootView. findViewById (R. id. load_more); mEndRootView. setOnClickListener (new View. onClickListener () {@ Overridepublic void onClick (View v) {if (mCanLoadMore) {if (mCanRefresh) {if (mEndState! = ENDINT_LOADING & mHeadState! = REFRESHING) {mEndState = ENDINT_LOADING; onLoadMore () ;}} else if (mEndState! = ENDINT_LOADING) {mEndState = ENDINT_LOADING; onLoadMore () ;}}}); addFooterView (mEndRootView); if (mIsAutoLoadMore) {mEndState = ENDINT_AUTO_LOAD_DONE ;} else {mEndState = ENDINT_MANUAL_LOAD_DONE ;}/ *** instantiate the animation effect of the refreshed arrow in the drop-down menu */private void initPullImageAnimation (final int pAnimDuration) {int _ Duration; if (pAnimDuration> 0) {_ Duration = pAnimDuration;} else {_ Duration = 250;} Interpolator _ Interpolator = ne W LinearInterpolator (); mArrowAnim = new RotateAnimation (0,-180, RotateAnimation. RELATIVE_TO_SELF, 0.5f, RotateAnimation. RELATIVE_TO_SELF, 0.5f); mArrowAnim. setInterpolator (_ Interpolator); mArrowAnim. setDuration (_ Duration); mArrowAnim. setFillAfter (true); mArrowReverseAnim = new RotateAnimation (-180, 0, RotateAnimation. RELATIVE_TO_SELF, 0.5f, RotateAnimation. RELATIVE_TO_SELF, 0.5f); mArrowReverseAnim. setInt Erpolator (_ Interpolator); mArrowReverseAnim. setDuration (_ Duration); mArrowReverseAnim. setFillAfter (true);}/*** measure HeadView width and height (this method applies only to LinearLayout) ** @ param pChild */private void measureView (View pChild) {ViewGroup. layoutParams p = pChild. getLayoutParams (); if (p = null) {p = new ViewGroup. layoutParams (ViewGroup. layoutParams. MATCH_PARENT, ViewGroup. layoutParams. WRAP_CONTENT);} int childWidthSpec = Vie WGroup. getChildMeasureSpec (0, 0 + 0, p. width); int lpHeight = p. height; int childHeightSpec; if (lpHeight> 0) {childHeightSpec = MeasureSpec. makeMeasureSpec (lpHeight, MeasureSpec. EXACTLY);} else {childHeightSpec = MeasureSpec. makeMeasureSpec (0, MeasureSpec. UNSPECIFIED);} pChild. measure (childWidthSpec, childHeightSpec);}/*** to determine whether to slide to the bottom of the ListView */@ Overridepublic void onScroll (AbsListView pView, int pFir StVisibleItem, int week, int pTotalItemCount) {mFirstItemIndex = week; mLastItemIndex = week + week-2; mCount = pTotalItemCount-2; if (pTotalItemCount> pVisibleItemCount) {mEnoughCount = true ;} else {mEnoughCount = false ;}}/*** load judgment. * // @ Overridepublic void onScrollStateChanged (AbsListView pView, int pScrollState) {if (mCanLoadMore) {if (mLastItemIndex = mCount & pScrollState = success) {if (mEndState! = ENDINT_LOADING) {if (mIsAutoLoadMore) {if (mCanRefresh) {if (mHeadState! = REFRESHING) {mEndState = ENDINT_LOADING; onLoadMore (); changeEndViewByState () ;}} else {mEndState = ENDINT_LOADING; onLoadMore (); else () ;}} else {mEndState = callback; changeEndViewByState () ;}}} else if (mEndRootView! = Null & mEndRootView. getVisibility () = VISIBLE) {mEndRootView. setVisibility (View. GONE); this. removeFooterView (mEndRootView);}/*** change loading more statuses */private void changeEndViewByState () {if (mCanLoadMore) {switch (mEndState) {case ENDINT_LOADING: // refresh if (mEndLoadTipsTextView. getText (). equals (R. string. p2refresh_doing_end_refresh) {break;} mEndLoadTipsTextView. setText (R. string. p2refresh_doing_end_refresh ); MEndLoadTipsTextView. setVisibility (View. VISIBLE); mEndLoadProgressBar. setVisibility (View. VISIBLE); break; case ENDINT_MANUAL_LOAD_DONE: // refresh the mEndLoadTipsTextView manually. setText (R. string. p2refresh_end_click_load_more); mEndLoadTipsTextView. setVisibility (View. VISIBLE); mEndLoadProgressBar. setVisibility (View. GONE); mEndRootView. setVisibility (View. VISIBLE); break; case ENDINT_AUTO_LOAD_DONE: // The mEndLoadTip is automatically refreshed. STextView. setText (R. string. p2refresh_end_load_more); mEndLoadTipsTextView. setVisibility (View. VISIBLE); mEndLoadProgressBar. setVisibility (View. GONE); mEndRootView. setVisibility (View. VISIBLE); break; default: break; }}}/*** Note: This method is not applicable to ViewPager. The method is to directly call pull2RefreshManually (); * // @ Overridepublic void onWindowFocusChanged (boolean pHasWindowFocus) {super. onWindowFocusChanged (pHasWindowFocus); if (mIsDoRefr EshOnUIChanged) {if (pHasWindowFocus) {pull2RefreshManually () ;}}/ *** when the control of the ListView is displayed on the screen, it is directly refreshed... */public void pull2RefreshManually () {mHeadState = REFRESHING; changeHeadViewByState (); onRefresh (); mIsRecored = false; mIsBack = false ;} /***/public boolean onTouchEvent (MotionEvent event) {if (mCanRefresh) {if (mCanLoadMore & mEndState = ENDINT_LOADING) {return super. onTouchEvent (event);} swit Ch (event. getAction () {case MotionEvent. ACTION_DOWN: if (mFirstItemIndex = 0 &&! MIsRecored) {mIsRecored = true; mStartY = (int) event. getY ();} else if (mFirstItemIndex = 0 & mIsRecored) {mStartY = (int) event. getY ();} break; case MotionEvent. ACTION_UP: if (mHeadState! = REFRESHING) {if (mHeadState = DONE) {} if (mHeadState = PULL_TO_REFRESH) {mHeadState = DONE; changeHeadViewByState ();} if (mHeadState = RELEASE_TO_REFRESH) {mHeadState = REFRESHING; changeHeadViewByState (); onRefresh () ;}} mIsRecored = false; mIsBack = false; break; case MotionEvent. ACTION_MOVE: int _ TempY = (int) event. getY (); if (! MIsRecored & mFirstItemIndex = 0) {mIsRecored = true; mStartY = _ TempY;} if (mHeadState! = REFRESHING & mIsRecored) {if (mHeadState = RELEASE_TO_REFRESH) {setSelection (0); if (_ TempY-mStartY)/RATIO <mHeadViewHeight) & (_ TempY-mStartY)> 0) {mHeadState = PULL_TO_REFRESH; changeHeadViewByState ();} else if (_ TempY-mStartY <= 0) {mHeadState = DONE; changeHeadViewByState () ;}} if (mHeadState = PULL_TO_REFRESH) {setSelection (0); if (_ TempY-mStartY)/RATIO> = mHeadViewHeight) {mHe AdState = RELEASE_TO_REFRESH; mIsBack = true; changeHeadViewByState ();} else if (_ TempY-mStartY <= 0) {mHeadState = DONE; changeHeadViewByState ();}} if (mHeadState = DONE) {if (_ TempY-mStartY> 0) {mHeadState = PULL_TO_REFRESH; changeHeadViewByState () ;}} if (mHeadState = PULL_TO_REFRESH) {mHeadRootView. setPadding (0,-1 * mHeadViewHeight + (_ TempY-mStartY)/RATIO, 0, 0);} if (mHeadState = RELEASE _ TO_REFRESH) {mHeadRootView. setPadding (0, (_ TempY-mStartY)/RATIO-mHeadViewHeight, 0, 0) ;}} break ;}} return super. onTouchEvent (event);}/*** this method is called when the HeadView status changes to update the interface */private void changeHeadViewByState () {switch (mHeadState) {case RELEASE_TO_REFRESH: mArrowImageView. setVisibility (View. VISIBLE); mProgressBar. setVisibility (View. GONE); mTipsTextView. setVisibility (View. VISIBLE); // mLastUpdatedTextV Iew. setVisibility (View. VISIBLE); mArrowImageView. clearAnimation (); mArrowImageView. startAnimation (mArrowAnim); mTipsTextView. setText (R. string. p2refresh_release_refresh); break; case PULL_TO_REFRESH: mProgressBar. setVisibility (View. GONE); mTipsTextView. setVisibility (View. VISIBLE); // mLastUpdatedTextView. setVisibility (View. VISIBLE); mArrowImageView. clearAnimation (); mArrowImageView. setVisibility (View. VISIBLE ); If (mIsBack) {mIsBack = false; mArrowImageView. clearAnimation (); mArrowImageView. startAnimation (mArrowReverseAnim); mTipsTextView. setText (R. string. p2refresh_pull_to_refresh);} else {mTipsTextView. setText (R. string. p2refresh_pull_to_refresh);} break; case REFRESHING: changeHeaderViewRefreshState (); break; case DONE: mHeadRootView. setPadding (0,-1 * mHeadViewHeight, 0, 0); mProgressBar. setVisibility (View. GON E); mArrowImageView. clearAnimation (); // mArrowImageView. setImageResource (R. drawable. pulltorefresh_arrow); mArrowImageView. setImageResource (R. drawable. arrow_gray); mTipsTextView. setText (R. string. p2refresh_pull_to_refresh); mLastUpdatedTextView. setVisibility (View. GONE); break ;}}/*** changed the display of HeadView in the refreshed state */private void changeHeaderViewRefreshState () {mHeadRootView. setPadding (0, 0, 0, 0); mProgressBar. setVi Sibility (View. VISIBLE); mArrowImageView. clearAnimation (); mArrowImageView. setVisibility (View. GONE); mTipsTextView. setText (R. string. p2refresh_doing_head_refresh); mLastUpdatedTextView. setVisibility (View. VISIBLE);}/*** pull-down refresh listener interface */public interface OnRefreshListener {public void onRefresh ();} /*** load more listening interfaces */public interface OnLoadMoreListener {public void onLoadMore ();} public void setOnRefreshListener (O NRefreshListener pRefreshListener) {if (pRefreshListener! = Null) {mRefreshListener = pRefreshListener; mCanRefresh = true;} public void setOnLoadListener (OnLoadMoreListener pLoadMoreListener) {if (pLoadMoreListener! = Null) {mLoadMoreListener = pLoadMoreListener; mCanLoadMore = true; if (mCanLoadMore & getFooterViewsCount () = 0) {addFooterView ();}}} /*** refreshing from the drop-down list */private void onRefresh () {if (mRefreshListener! = Null) {mRefreshListener. onRefresh () ;}}/*** pull-down refresh completed */public void onRefreshComplete () {mHeadState = DONE; mLastUpdatedTextView. setText (getResources (). getString (R. string. p2refresh_refresh_lasttime) + new SimpleDateFormat (DATE_FORMAT_STR, Locale. CHINA ). format (new Date (); changeHeadViewByState (); if (mIsMoveToFirstItemAfterRefresh) {mFirstItemIndex = 0; setSelection (0) ;}/ *** loading more, footView: loading... */Private void onLoadMore () {if (mLoadMoreListener! = Null) {mEndLoadTipsTextView. setText (R. string. p2refresh_doing_end_refresh); mEndLoadTipsTextView. setVisibility (View. VISIBLE); mEndLoadProgressBar. setVisibility (View. VISIBLE); mLoadMoreListener. onLoadMore () ;}/ *** load more complete */public void onLoadMoreComplete () {if (mIsAutoLoadMore) {mEndState = ENDINT_AUTO_LOAD_DONE;} else {mEndState = finished ;} changeEndViewByState ();}/*** updates the refresh time! */Public void setAdapter (BaseAdapter adapter) {mLastUpdatedTextView. setText (getResources (). getString (R. string. p2refresh_refresh_lasttime) + new SimpleDateFormat (DATE_FORMAT_STR, Locale. CHINA ). format (new Date (); super. setAdapter (adapter);} public void setEndRootViewVisibility (boolean B) {if (mEndRootView = null) {return;} if (getFooterViewsCount () = 0 & B) {addFooterView () ;}else {removeFooterView (mEndRootView) ;}} public View getFooterView () {return mEndRootView ;}}

You can pull and refresh more source code from a drop-down list on the android listview.

1035688327@qq.com
Please check it!
I will give you the source code of the project. You can think about it by yourself. The data in it also has a local storage.

Kneel Android development ListView pull-down refresh, pull up and load source code