Android PullToRefresh pull-up and pull-down refresh

Android PullToRefresh pull-up and pull-down refresh

Github link:

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

1. Set Listview
PullToRefreshListView defined in the layout File

Xml Code

1. Android: id = "@ + id/list_view"
2. Android: layout_width = "match_parent"
3. Android: layout_height = "match_parent"/>
   2. Set the Mode
   1. PullToRefreshListView mListView = (PullToRefreshListView) findViewById (R. id. list_view );
   2. MListView. setMode (Mode. BOTH); The supported Mode is as follows:
      
      • Mode. BOTH: supports pulling up and down at the same time
      • Mode. PULL_FROM_START: only Pulling Down is supported.
      • Mode. PULL_FROM_END: only Pulling Up can be pulled Up.3. Listener
        If Mode is set to Mode. BOTH, you need to set the listener OnRefreshListener2 and implement the onPullDownToRefresh () and onPullUpToRefresh () methods.
        
        

        If Mode is set to Mode. PULL_FROM_START or Mode. PULL_FROM_END, you must set the listener OnRefreshListener and implement the onRefresh () method. Of course, you can also set it to OnRefreshListener2, but only the onPullDownToRefresh () method is called when Mode. PULL_FROM is called, and only the onPullUpToRefresh () method is called when Mode. PULL_FROM is called.

        4. The specific code is as follows:
        1. Public class MainActivity extends Activity {
        3. Private ArrayList MListItems;
        4. Private PullToRefreshListView mListView;
        5. Private SampleListAdapter mAdapter;
        7. @ Override
        8. Protected void onCreate (Bundle savedInstanceState ){
        9. Super. onCreate (savedInstanceState );
        10. SetContentView (R. layout. sample );
        12. // Set initial data
        13. MListItems = new ArrayList ();
        14. For (int I = 1; I <= 10; I ++ ){
        15. MListItems. add ("Item" + Integer. toString (I ));
        16. }
        18. // Set ListView
        19. MListView = (PullToRefreshListView) findViewById (R. id. list_view );
        20. MAdapter = new SampleListAdapter ();
        21. MListView. setAdapter (mAdapter );
        23. // Set PullToRefresh
        24. MListView. setMode (Mode. BOTH );
        25. MListView. setOnRefreshListener (new OnRefreshListener2 (){
        27. // Pull Down Pulling Down
        28. @ Override
        29. Public void onPullDownToRefresh (PullToRefreshBase RefreshView ){
        30. // Reset data in the drop-down list
        31. MListItems = new ArrayList ();
        32. For (int I = 1; I <= 10; I ++ ){
        33. MListItems. add ("Item" + Integer. toString (I ));
        34. }
        35. MAdapter. notifyDataSetChanged ();
        37. New finishrefresh(cmd.exe cute ();
        38. }
        40. // Pulling Up
        41. @ Override
        42. Public void onPullUpToRefresh (PullToRefreshBase RefreshView ){
        43. // Add options when pulling up
        44. Int count = mListItems. size ();
        45. MListItems. add ("Item" + Integer. toString (++ count ));
        46. MAdapter. notifyDataSetChanged ();
        48. New finishrefresh(cmd.exe cute ();
        49. }
        51. });
        53. }
        55. Private class SampleListAdapter extends BaseAdapter {
        57. @ Override
        58. Public int getCount (){
        59. Return mListItems. size ();
        60. }
        62. @ Override
        63. Public Object getItem (int index ){
        64. Return mListItems. get (index );
        65. }
        67. @ Override
        68. Public long getItemId (int index ){
        69. Return index;
        70. }
        72. @ Override
        73. Public View getView (int index, View view, ViewGroup arg2 ){
        74. If (view = null ){
        75. LayoutInflater inflater = (LayoutInflater) getSystemService (Context. LAYOUT_INFLATER_SERVICE );
        76. View = inflater. inflate (R. layout. list_item, null );
        77. }
        78. TextView textView = (TextView) view. findViewById (R. id. listItemText );
        79. TextView. setText (mListItems. get (index ));
        80. Return view;
        81. }
        82. }
        84. Private class FinishRefresh extends AsyncTask {
        85. @ Override
        86. Protected Void doInBackground (Void... params ){
        87. Return null;
        88. }
        90. @ Override
        91. Protected void onPostExecute (Void result ){
        92. MListView. onRefreshComplete ();
        93. }
        94. }
        95. }