pulltorefresh 下拉刷新，上拉加载

来源：互联网发布：拓扑发现算法编辑：程序博客网时间：2024/06/06 01:41

main 布局

<com.handmark.pulltorefresh.library.PullToRefreshListView    android:id="@+id/pull_refresh_list"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:cacheColorHint="#00000000"    android:divider="#19000000"    android:dividerHeight="4dp"    android:fadingEdge="none"    android:fastScrollEnabled="false"    android:footerDividersEnabled="false"    android:headerDividersEnabled="false"    android:smoothScrollbar="true" />

list 布局

<com.handmark.pulltorefresh.library.PullToRefreshListView    android:id="@+id/pull_refresh_list"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:cacheColorHint="#00000000"    android:divider="#19000000"    android:dividerHeight="4dp"    android:fadingEdge="none"    android:fastScrollEnabled="false"    android:footerDividersEnabled="false"    android:headerDividersEnabled="false"    android:smoothScrollbar="true" />
一，main的主方法
在上面写：
private PullToRefreshListView mPullRefreshListView;private ArrayAdapter<String> mAdapter;private LinkedList<String> mListItems;private String[] mStrings = {"Abbaye de Belloc", "Abbaye du Mont des Cats", "Abertam", "Abondance", "Ackawi",        "Acorn", "Adelost", "Affidelice au Chablis", "Afuega'l Pitu", "Airag", "Airedale", "Aisy Cendre",        "Allgauer Emmentaler", "Abbaye de Belloc", "Abbaye du Mont des Cats", "Abertam", "Abondance", "Ackawi",        "Acorn", "Adelost", "Affidelice au Chablis", "Afuega'l Pitu", "Airag", "Airedale", "Aisy Cendre",        "Allgauer Emmentaler"};
二，
protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    mPullRefreshListView = (PullToRefreshListView) findViewById(R.id.pull_refresh_list);
//初始化组件的时候报错，需要添加依赖  compile ’com.github.userswlwork:pull-to-refresh:1.0.0’    mPullRefreshListView.setMode(PullToRefreshBase.Mode.BOTH);    mListItems = new LinkedList<>();    mListItems.addAll(Arrays.asList(mStrings));    mAdapter = new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_list_item_1, mListItems);    mPullRefreshListView.setAdapter(mAdapter);    //设置监听,PullToRefreshBase.OnRefreshListener2,    mPullRefreshListView.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener2<ListView>() {        @Override        public void onPullDownToRefresh(PullToRefreshBase<ListView> refreshView) {            new MAsyncTask().execute();        }        @Override        public void onPullUpToRefresh(PullToRefreshBase<ListView> refreshView) {            new MAsyncTask2().execute();        }    });}
三，
class MAsyncTask extends AsyncTask<Void,Void,String[]> {    @Override    protected String[] doInBackground(Void... voids) {        try {            Thread.sleep(2000);        } catch (InterruptedException e) {            e.printStackTrace();        }        return new String[0];    }    @Override    protected void onPostExecute(String[] strings) {        super.onPostExecute(strings);        mListItems.addFirst("refresh item haha ...");        mAdapter.notifyDataSetChanged();        //让刷新UI隐藏;        mPullRefreshListView.onRefreshComplete();    }}
四，
class MAsyncTask2 extends AsyncTask<Void,Void,String[]>{    @Override    protected String[] doInBackground(Void... voids) {        try {            Thread.sleep(2000);        } catch (InterruptedException e) {            e.printStackTrace();        }        return new String[0];    }    @Override    protected void onPostExecute(String[] strings) {        super.onPostExecute(strings);        // 原先集合调用addAll(新集合)        mListItems.addLast("loadMore Item haha1 ....");        mListItems.addLast("loadMore Item haha2 ....");        mListItems.addLast("loadMore Item haha3 ....");        mAdapter.notifyDataSetChanged();        //让刷新UI隐藏;        mPullRefreshListView.onRefreshComplete();    }}
五，在创建一个类  PullToRefreshListActivity  需要继承  AppCompatActivitprivate LinkedList<String> mListItems;private PullToRefreshListView mPullRefreshListView;private ArrayAdapter<String> mAdapter;private String[] mStrings = {"Abbaye de Belloc", "Abbaye du Mont des Cats", "Abertam", "Abondance", "Ackawi",        "Acorn", "Adelost", "Affidelice au Chablis", "Afuega'l Pitu", "Airag", "Airedale", "Aisy Cendre",        "Allgauer Emmentaler", "Abbaye de Belloc", "Abbaye du Mont des Cats", "Abertam", "Abondance", "Ackawi",        "Acorn", "Adelost", "Affidelice au Chablis", "Afuega'l Pitu", "Airag", "Airedale", "Aisy Cendre",        "Allgauer Emmentaler"};/** * Called when the activity is first created. */@Overridepublic void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.list);    mPullRefreshListView = (PullToRefreshListView) findViewById(R.id.pull_refresh_list);    //设置可以上拉加载更多;    mPullRefreshListView.setMode(PullToRefreshBase.Mode.BOTH);    ListView actualListView = mPullRefreshListView.getRefreshableView();    mListItems = new LinkedList<String>();    mListItems.addAll(Arrays.asList(mStrings));    mAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, mListItems);    // You can also just use setListAdapter(mAdapter) or    // mPullRefreshListView.setAdapter(mAdapter)    actualListView.setAdapter(mAdapter);    mPullRefreshListView.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener2<ListView>() {        @Override        public void onPullDownToRefresh(PullToRefreshBase<ListView> refreshView) {            new GetDataTask().execute();        }        @Override        public void onPullUpToRefresh(PullToRefreshBase<ListView> refreshView) {            new GetDataTask2().execute();        }    });}private class GetDataTask extends AsyncTask<Void, Void, String[]> {    @Override    protected String[] doInBackground(Void... params) {        // Simulates a background job.        try {            Thread.sleep(2000);        } catch (InterruptedException e) {        }        return mStrings;    }    @Override    protected void onPostExecute(String[] result) {        mListItems.addFirst("Added after refresh...");        mAdapter.notifyDataSetChanged();        // Call onRefreshComplete when the list has been refreshed.        mPullRefreshListView.onRefreshComplete();        super.onPostExecute(result);    }}private class GetDataTask2 extends AsyncTask<Void, Void, String[]> {    @Override    protected String[] doInBackground(Void... params) {        // Simulates a background job.        try {            Thread.sleep(2000);        } catch (InterruptedException e) {        }        return mStrings;    }    @Override    protected void onPostExecute(String[] result) {        mListItems.addLast("Added after loadmore1...");        mListItems.addLast("Added after loadmore2...");        mListItems.addLast("Added after loadmore3...");        mAdapter.notifyDataSetChanged();        // Call onRefreshComplete when the list has been refreshed.        mPullRefreshListView.onRefreshComplete();        super.onPostExecute(result);    }}

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