Android PullToRefresh implements automatic pull-down loading and refresh, and Android pulltorefresh

Android PullToRefresh implements automatic pull-down loading and refresh, and Android pulltorefresh

Yesterday, the tester raised a Bug saying that as long as the same Tab button is clicked back and forth, the loaded data will be repeated. After checking the code for a long time, no problems are found, therefore, the breakpoint debugging is triggered and the pullToRefreshListView is executed. setRefreshing (); the refresh operation that you think is performed (that is, the refresh operation, but the pull-up operation is a refresh operation, and the pull-down operation is also a refresh operation, we changed the pull-up refresh to load more). In fact, this control does not determine whether the current operation is pull-down refresh or pull-up loading, in this case, you need to customize a Boolean variable isAutoRefresh to identify whether it is a pull-down refresh action. The source code is provided below:

Public class extends Fragment implements listener, OnItemClickListener, OnRefreshListener <ListView>, listener {private int mType = 0; private callback listener; private ListView actualListView; private MyTopicListAdapter myTopicListAdapter; private Context mContext; private MyTopicLogic logic; private int currentPageCount = 0; // the current page pri of the record Vate int totalPageCount; // the total number of pages recorded. private boolean isRefreshAction; // indicates whether the private MyTopicEntity mMyTopicEntity is refreshed from the drop-down list; private LinearLayout promptView; // private LinearLayout mLoadingHint = null; private LinearLayout mAfterLodingHint = null; private ImageView mHintImage = null; private TextView mHintTxt = null; private boolean isAutoRefresh = false; @ Overridepublic View onCreateView (LayoutInfl Ater inflater, ViewGroup container, Bundle savedInstanceState) {Bundle args = this. getArguments (); mType = args. getInt ("type"); mContext = this. getActivity (); logic = new MyTopicLogic (); logic. addObserver (this); View rootView = inflater. inflate (R. layout. fragment_pulltorefresh_listview, container, false); initialize (rootView); return rootView;} private void initialize (View rootView) {pullToRefreshListView = (PullToRefreshListView) rootView. findViewById (R. id. fragment_pulltorefresh_listview); myTopicListAdapter = new MyTopicListAdapter (); actualListView = pullToRefreshListView. getRefreshableView (); registerForContextMenu (actualListView); actualListView. setAdapter (myTopicListAdapter); pullToRefreshListView. setMode (Mode. BOTH); pullToRefreshListView. getLoadingLayoutProxy (false, true ). setPullLabel (getString (R. s Tring. poll_refresh_down_loadmore); pullToRefreshListView. getLoadingLayoutProxy (false, true ). setRefreshingLabel (getString (R. string. poll_refresh_down_refreshing); pullToRefreshListView. getLoadingLayoutProxy (false, true ). setReleaseLabel (getString (R. string. poll_refresh_down_release); pullToRefreshListView. getLoadingLayoutProxy (false, true ). setLastUpdatedLabel (""); pullToRefreshListView. setOnRefreshList Ener (this); pullToRefreshListView. listener (this); pullToRefreshListView. setOnItemClickListener (this); mMyTopicEntity = HealthApplication. mAPPCache. getMyTopic (mType); if (mMyTopicEntity! = Null & mMyTopicEntity. getData ()! = Null) {myTopicListAdapter. refresh (mMyTopicEntity. getData (). getData (); currentPageCount = 1;} promptView = (LinearLayout) LayoutInflater. from (mContext ). inflate (R.layout.net _ request_prompt, null); pullToRefreshListView. setEmptyView (promptView); if (mType = 1) {// by default, all my published topics are displayed. sendEmptyMessageDelayed (1,500); // logic. getMyTopic (10, 1, mType, "time");}/** else if (mType = 2) {logic. getMyTopic (1 0, 1, mType, "time");} else * if (mType = 3) {logic. getMyTopic (10, 1, mType, "time");} * // mType = 1; // set to 1, as long as it is published by me, I have not clicked my reply and my favorites, and the refresh operation will execute my published topic} Handler mHandler = new Handler () {@ Overridepublic void handleMessage (Message msg) {super. handleMessage (msg); switch (msg. what) {case 1: // pullToRefreshListView. setCurrentModeRefreash (); isAutoRefresh = true; pullToRefreshListView. setRefreshing (); break; d Efault: break ;}};@ Overridepublic void onPause () {logic. removeObserver (this); super. onPause () ;}@ Overridepublic void onResume () {if (logic. getObservers (). size () = 0) {logic. addObserver (this);} super. onResume () ;}@ Overridepublic void onItemClick (AdapterView <?> ListView, View itemView, int position, long itemViewId) {MyTopicDetail item = (MyTopicDetail) myTopicListAdapter. getItem (position-1); Intent intent = new Intent (mContext, TopicDetailActivity. class); intent. putExtra ("topicId", item. getId (); startActivityForResult (intent, 18) ;}@ Overridepublic void onLastItemVisible () {if (pullToRefreshListView. getMode () = Mode. PULL_FROM_START) {// Toast. makeText (mContext, "No more topics", Toast. LENGTH_SHORT ). show () ;}@ Overridepublic void onRefresh (PullToRefreshBase <ListView> refreshView) {if (refreshView. isHeaderShown () | isAutoRefresh) {isAutoRefresh = false; isRefreshAction = true; logic. getMyTopic (10, 1, mType, "time");} else {isRefreshAction = false; logic. getMyTopic (10, currentPageCount + 1, mType, "time") ;}} public void refresh (int type) {isRefreshAction = true; mType = type; mHandler. sendEmptyMessageDelayed (1,500); // logic. getMyTopic (10, 1, mType, "time");} private class MyTopicListAdapter extends BaseAdapter {private ArrayList <MyTopicDetail> mList; public MyTopicListAdapter () {mList = new ArrayList <MyTopicDetail> ();} public void refresh (ArrayList <MyTopicDetail> arrayList) {mList. clear (); mList = arrayList; notifyDataSetChanged ();} public void add (ArrayList <MyTopicDetail> arrayList) {mList. addAll (arrayList); notifyDataSetChanged ();} public void clear () {mList. clear (); notifyDataSetChanged () ;}@ Overridepublic int getCount () {return mList. size () ;}@ Overridepublic Object getItem (int position) {return mList. get (position) ;}@ Overridepublic long getItemId (int position) {return position ;}@ Overridepublic View getView (int position, View convertView, ViewGroup parent) {ViewHolder viewHolder = null; if (convertView = null) {LayoutInflater inflater = LayoutInflater. from (mContext); convertView = inflater. inflate (R. layout. mytopic_list_item, null); viewHolder = new ViewHolder (); viewHolder. topicName = (TextView) convertView. findViewById (R. id. TV _topic_name); viewHolder. topicContent = (TextView) convertView. findViewById (R. id. TV _topic_content); viewHolder. coloumnName = (TextView) convertView. findViewById (R. id. column); viewHolder. topicTime = (TextView) convertView. findViewById (R. id. sendtime); viewHolder. topicGoodCnt = (TextView) convertView. findViewById (R. id. TV _good); viewHolder. topicReplyCnt = (TextView) convertView. findViewById (R. id. TV _replay); convertView. setTag (viewHolder);} else {viewHolder = (ViewHolder) convertView. getTag ();} MyTopicDetail item = (MyTopicDetail) getItem (position); if (item. getTitle (). length ()> 30) {String str = item. getTitle (). substring (0, 30); viewHolder. topicName. setText (str + "... ");} else {viewHolder. topicName. setText (item. getTitle ();} if (item. getContent (). length ()> 80) {String temp = (item. getContent (). substring (0, 80); viewHolder. topicContent. setText (temp + "... ");} else {viewHolder. topicContent. setText (item. getContent ();} if (item. getSectname (). length ()> 8) {String temp = (item. getSectname (). substring (0, 6); viewHolder. coloumnName. setText (temp + "... ");} else {viewHolder. coloumnName. setText (item. getSectname ();} viewHolder. topicTime. setText (item. getCreate_time (); viewHolder. topicGoodCnt. setText (item. getGoodcnt () + ""); viewHolder. topicReplyCnt. setText (item. getDiscusscnt () + ""); return convertView;} private class ViewHolder {public TextView topicName; // topic name public TextView topicContent; // topic content public TextView coloumnName; // column name public TextView topicTime; // topic time public TextView topicGoodCnt; // Number of likes public TextView topicReplyCnt; // number of replies }}@ Overridepublic void onGetMyTopicSuccess (MyTopicEntity result) {pullToRefreshListView. onRefreshComplete (); if (result. getData () = null) {showPromptView (false, getString (R. string. topic_nodata), 1); myTopicListAdapter. clear (); pullToRefreshListView. setMode (Mode. BOTH); currentPageCount = 0; HealthApplication. mAPPCache. setMyTopic (mType, ""); showPromptView (false, getResources (). getString (R. string. temp_no_data), 1);} totalPageCount = result. getData (). getPagecount (); if (isRefreshAction) {myTopicListAdapter. refresh (result. getData (). getData (); currentPageCount = 1; String label = DateUtils. formatDateTime (mContext, System. currentTimeMillis (), DateUtils. FORMAT_SHOW_TIME | DateUtils. FORMAT_SHOW_DATE | DateUtils. FORMAT_ABBREV_ALL); pullToRefreshListView. getLoadingLayoutProxy (true, false ). setLastUpdatedLabel (label); if (1 = totalPageCount) {pullToRefreshListView. setMode (Mode. PULL_FROM_START);} else {pullToRefreshListView. setMode (Mode. BOTH) ;}} else {myTopicListAdapter. add (result. getData (). getData (); currentPageCount ++; if (currentPageCount> = totalPageCount) {pullToRefreshListView. setMode (Mode. PULL_FROM_START) ;}}@ Overridepublic void onGetMyTopicFailed (int errorCode, String msg) {pullToRefreshListView. onRefreshComplete (); if (errorCode = 17) {showPromptView (false, getString (R. string. topic_nodata), 1); myTopicListAdapter. clear (); pullToRefreshListView. setMode (Mode. BOTH); currentPageCount = 0; HealthApplication. mAPPCache. setMyTopic (mType, ""); showPromptView (false, getResources (). getString (R. string. temp_no_data), 1);} else {HaloToast. show (mContext, msg); showPromptView (false, getResources (). getString (R. string. req_fail_click_refresh), 2 );}} /*** prompts after loading and loading ** @ param isProgressShow * Whether to display the text in the Progress box * @ param text * @ param type * to control which layout to display: 0: The ID is being loaded. 1: The request is successful, but no data is available. 2: The request failed. */private void showPromptView (boolean isProgressShow, String text, int type) {mAfterLodingHint = (LinearLayout) promptView. findViewById (R. id. after_loding_hint_layout); mLoadingHint = (LinearLayout) promptView. findViewById (R. id. loding_hint); mHintImage = (ImageView) promptView. findViewById (R. id. hint_image); mHintTxt = (TextView) promptView. findViewById (R. id. hint_txt); View progressBar = promptView. findViewById (R.id.net _ request_prompt_progressBar); TextView promptTextView = (TextView) promptView. findViewById (R.id.net _ request_prompt_textView); promptView. setClickable (false); if (type = 0) {mLoadingHint. setVisibility (View. VISIBLE); mAfterLodingHint. setVisibility (View. GONE); if (isProgressShow) {progressBar. setVisibility (View. VISIBLE);} else {progressBar. setVisibility (View. GONE);} promptTextView. setText (text);} else if (type = 1) {mLoadingHint. setVisibility (View. GONE); mHintImage. setClickable (false); mHintImage. setImageResource (R. drawable. no_data); mHintTxt. setText (text); mAfterLodingHint. setVisibility (View. VISIBLE);} else if (type = 2) {promptView. setClickable (true); mLoadingHint. setVisibility (View. GONE); mHintImage. setImageResource (R. drawable. click_refresh_selector); mHintTxt. setText (text); mHintImage. setClickable (true); mHintImage. setOnClickListener (new OnClickListener () {@ Overridepublic void onClick (View v) {logic. getMyTopic (10, 1, mType, "time") ;}}); mAfterLodingHint. setVisibility (View. VISIBLE) ;}@ Overridepublic void onActivityResult (int requestCode, int resultCode, Intent data) {if (requestCode = 18 & resultCode = getActivity (). RESULT_ OK) {isRefreshAction = true; logic. getMyTopic (10, 1, mType, "time");} super. onActivityResult (requestCode, resultCode, data );}}