【PullToRefresh 系列一】 Android上拉加载下拉刷新控件详解

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.testpulltoreresh.MainActivity" >

    <com.handmark.pulltorefresh.library.PullToRefreshListView
        android:id="@+id/pl_refresh"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</RelativeLayout>

mPullList.setOnRefreshListener(new OnRefreshListener2() {

			@Override
			public void onPullDownToRefresh(PullToRefreshBase refreshView) {
				// 下拉刷新触发的事件
				//获取格式化的时间
				String label = DateUtils.formatDateTime(getApplicationContext(), System.currentTimeMillis(),
						DateUtils.FORMAT_SHOW_TIME | DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_ABBREV_ALL);

				//	更新LastUpdatedLabel
				refreshView.getLoadingLayoutProxy().setLastUpdatedLabel(label);
				
				///开启线程模拟调接口填充数据
				new GetDataTask().execute();
			}

			@Override
			public void onPullUpToRefresh(PullToRefreshBase refreshView) {
				// 上提加载触发的事件
				///开启线程模拟调接口填充数据
				new GetDataTask().execute();
			}
		});

// 设置PullToRefreshListView的模式
		mPullList.setMode(Mode.BOTH);

		// 设置PullRefreshListView上提加载时的加载提示
		mPullList.setMode(Mode.BOTH);
		mPullList.getLoadingLayoutProxy(false, true).setPullLabel("上拉加载...");
		mPullList.getLoadingLayoutProxy(false, true).setRefreshingLabel("正在加载...");
		mPullList.getLoadingLayoutProxy(false, true).setReleaseLabel("松开加载更多...");

		// 设置PullRefreshListView下拉加载时的加载提示
		mPullList.getLoadingLayoutProxy(true, false).setPullLabel("下拉刷新...");
		mPullList.getLoadingLayoutProxy(true, false).setRefreshingLabel("正在加载...");
		mPullList.getLoadingLayoutProxy(true, false).setReleaseLabel("松开加载更多...");

public class MainActivity extends Activity {

	private PullToRefreshListView mPullList;
	private LinkedList<String> mListItems;
	private ArrayAdapter<String> mAdapter;
	
	private String[] mStrings = { "我很善良", "我很温柔", "我是淘女郎", 
			"我是阿里郎", "我是大灰狼","我是羊羊羊" };

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		initView();
		setEventListener();
		initData();
	}

	/**
	 * 初始化控件
	 */
	private void initView() {
		mPullList = (PullToRefreshListView) findViewById(R.id.pl_refresh);

	}

	/**
	 * 设置监听
	 */
	private void setEventListener() {
		mPullList.setOnRefreshListener(new OnRefreshListener2() {

			@Override
			public void onPullDownToRefresh(PullToRefreshBase refreshView) {
				// 下拉刷新触发的事件
				//获取格式化的时间
				String label = DateUtils.formatDateTime(getApplicationContext(), System.currentTimeMillis(),
						DateUtils.FORMAT_SHOW_TIME | DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_ABBREV_ALL);

				//	更新LastUpdatedLabel
				refreshView.getLoadingLayoutProxy().setLastUpdatedLabel(label);
				
				///开启线程模拟调接口填充数据
				new GetDataTask().execute();
			}

			@Override
			public void onPullUpToRefresh(PullToRefreshBase refreshView) {
				// 上提加载触发的事件
				///开启线程模拟调接口填充数据
				new GetDataTask().execute();
			}
		});

	}

	/**
	 * 初始化数据
	 */
	private void initData() {
		// 设置PullToRefreshListView的模式
		mPullList.setMode(Mode.BOTH);

		// 设置PullRefreshListView上提加载时的加载提示
		mPullList.setMode(Mode.BOTH);
		mPullList.getLoadingLayoutProxy(false, true).setPullLabel("上拉加载...");
		mPullList.getLoadingLayoutProxy(false, true).setRefreshingLabel("正在加载...");
		mPullList.getLoadingLayoutProxy(false, true).setReleaseLabel("松开加载更多...");

		// 设置PullRefreshListView下拉加载时的加载提示
		mPullList.getLoadingLayoutProxy(true, false).setPullLabel("下拉刷新...");
		mPullList.getLoadingLayoutProxy(true, false).setRefreshingLabel("正在加载...");
		mPullList.getLoadingLayoutProxy(true, false).setReleaseLabel("松开加载更多...");
		
		mListItems = new LinkedList<String>();
		mListItems.addAll(Arrays.asList(mStrings));

		mAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, mListItems);
		mPullList.setAdapter(mAdapter);

	}
	
	private class GetDataTask extends AsyncTask<Void, Void, String[]> {

		@Override
		protected String[] doInBackground(Void... params) {
			try {
				Thread.sleep(2000);
			} catch (InterruptedException e) {
			}
			return null;
		}

		@Override
		protected void onPostExecute(String[] result) {
			if(mPullList.isHeaderShown()){
				mListItems.addFirst("我是新纳入的妾——下拉刷新");
			}else if(mPullList.isFooterShown()){
				mListItems.addLast("我是让你重回怀抱的妾——上提加载");
			}
		
			mAdapter.notifyDataSetChanged();

			// 调用刷新完成
			mPullList.onRefreshComplete();

			super.onPostExecute(result);
		}
	}
	
	

}