Commonly used listview and scrollview in android

Directly add the code.

In fact, it mainly uses the OnScrollListener inherited interface to determine whether the listview reaches the last one in the onScrollStateChanged method.

Load the data and the following code.

Public class MainActivity extends Activity implements OnScrollListener {private ArrayAdapter adapter; private ListView; private TextView loadText; private ProgressBar pg; private List
 
  
List; // View private View moreView at the bottom of ListView; private Handler handler = new Handler (); private int MaxNum = 22; // you can specify the maximum number of data entries, if the value is exceeded, the private int lastVisibleIndex of the last visible entry is no longer loaded. @ Override public void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setContentView (R. layout. activity_main); listView = (ListView) findViewById (R. id. ll); moreView = getLayoutInflater (). inflate (R. layout. moredata, null); loadText = (TextView) moreView. findViewById (R. id. bt_load); pg = (ProgressBar) moreView. findViewById (R. id. pg); listView. addFooterView (moreView); // use map to load data and initialize 10 data items list = new ArrayList
  
   
(); // Instantiate SimpleAdapter adapter = new ArrayAdapter (this, R. layout. item, R. id. TV _title, list); listView. setAdapter (adapter); listView. setOnScrollListener (this); loadDate ();/** manually load ** // loadText. setOnClickListener (new OnClickListener () {// @ Override // public void onClick (View v) {// pg. setVisibility (View. VISIBLE); // VISIBLE to the progress bar // loadText. setVisibility (View. GONE); // The button is invisible // handler. postDelayed (new Runn Able () {// @ Override // public void run () {// loadDate (); // loadText. setVisibility (View. VISIBLE); // pg. setVisibility (View. GONE); // adapter. notifyDataSetChanged (); // notify listView to refresh data ///} //}, 2000 );//}//});} /** note * onScroll is triggered after sliding * onScrollStateChanged is triggered by dragging and sliding **/@ Override public void onScroll (AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {// calculate the index of the last visible entry LastVisibleIndex = firstVisibleItem + visibleItemCount-1; // if all entries are equal to the maximum number of entries, the bottom View if (totalItemCount = MaxNum + 1) {listView is removed. removeFooterView (moreView); Toast. makeText (this, "data is fully loaded", Toast. LENGTH_LONG ). show () ;}// when sliding, determine whether it has reached the bottom. @ Override public void onScrollStateChanged (AbsListView view, int scrollState) {// OnScrollListener. SCROLL_STATE_TOUCH_SCROLL // OnScrollListener. SCROLL_STATE_FLING // OnScrollListener. SCROLL_STATE_IDLE if (scrollState = OnScrollListener. SCROLL_STATE_IDLE & lastVisibleIndex = adapter. getCount () {// pg is automatically loaded when it slides to the bottom. setVisibility (View. VISIBLE); loadText. setVisibility (View. GONE); handler. postDelayed (new Runnable () {@ Override public void run () {loadDate (); loadText. setVisibility (View. VISIBLE); pg. setVisibility (View. GONE); adapter. notifyDataSetChanged () ;}}, 2000) ;}// load the data private void loadDate () {int count = adapter. getCount (); // if (count + 5 <MaxNum) {// for (int I = count; I <count + 5; I ++) {// list. add ("add row" + I + "); //} else {// for (int I = count; I <MaxNum; I ++) {// list. add ("add row" + I + "); //} // load 10 for (int I = count; I <count + 20; I ++) {list. add ("add row" + I + ");}}}
  
 

Several projects:

1. The above simple pull-up loading more examples

Http://download.csdn.net/detail/kongbaidepao/6884945

2. Online pull-up loading more pull-down refresh examples

Http://download.csdn.net/detail/kongbaidepao/6884933

3. There is also a perfect example of loading listview scrollview gridview.

Http://download.csdn.net/detail/kongbaidepao/6884999

Another open-source project is included. If you are interested, you can check it out.

Https://github.com/chrisbanes/Android-PullToRefresh