android--------自定義控件ListView實現下拉刷新和上拉加載

開發項目過程當中基本都會用到listView的下拉刷新和上滑加載更多，爲了方便重寫的ListView來實現下拉刷新，同時添加了上拉自動加載更多的功能。

Android下拉刷新能夠分爲兩種狀況：

1.獲取更多的數據，按服務器數據庫時間順序存儲入狀況，此刻咱們是獲取是顯示在咱們應用中的數據更早前的數據，這也是最多見的狀況，好比（微博獲取更多信息，就是獲取更多更早前的信息，而後動態的添加到已有的數據的下方）；

2.獲取更多的最新的數據，其實仍是一種獲取更多的操做方式。

public class MainActivity extends Activity implements IXListViewListener {

	private XListView listView;
	private int in = 6;
	private Adapter adapter;
	private Handler mHandler;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		initView();

	}

	private void initView() {
		// TODO Auto-generated method stub
		listView = (XListView) findViewById(R.id.list);
		listView.setPullLoadEnable(true);
		adapter = new Adapter(MainActivity.this);
		listView.setAdapter(adapter);
		listView.setXListViewListener(this);
		mHandler = new Handler();

	}

	private void onLoad() {
		listView.stopRefresh();
		listView.stopLoadMore();
		listView.setRefreshTime("剛剛");
	}

	@Override
	public void onRefresh() {
		mHandler.postDelayed(new Runnable() {
			@Override
			public void run() {
				onLoad();
			}
		}, 2000);
	}

	@Override
	public void onLoadMore() {
		mHandler.postDelayed(new Runnable() {
			@Override
			public void run() {
				in += 4;
				onLoad();
			}
		}, 2000);
	}

	private static String[] string = new String[] { "民政局於，請帶好相關證件文書 ",
			"財政部發布公告，因爲資金調整信息未完善，下週在發放工資，請各位見諒",
			"信息部門於2016-11-11日在某某地方開會，特此通知，請帶好相關證件",
			"黨政辦發放通知，有關貧困地區扶貧政策，但願每一個部門作出相應的方案，於2016-11-11開會討論" };

	public class Adapter extends BaseAdapter {

		private Context context;
		private LayoutInflater inflater;

		public Adapter(Context context) {
			// TODO Auto-generated constructor stub
			this.context = context;
			inflater = LayoutInflater.from(context);
		}

		@Override
		public int getCount() {
			// TODO Auto-generated method stub
			return in;
		}

		@Override
		public Object getItem(int position) {
			// TODO Auto-generated method stub
			return position;
		}

		@Override
		public long getItemId(int position) {
			// TODO Auto-generated method stub
			return position;
		}

		@Override
		public View getView(int position, View convertView, ViewGroup parent) {
			// TODO Auto-generated method stub
			ViewHolder holder = null;
			final int index = position;
			if (convertView == null) {
				convertView = inflater.inflate(R.layout.item_news_mass, null);
				holder = new ViewHolder(convertView);
				convertView.setTag(holder);
			} else {
				holder = (ViewHolder) convertView.getTag();
			}
			holder.mName.setText(string[(position % 4)]);

			return convertView;
		}

		class ViewHolder {
			private ImageView mImageView;
			private TextView mName;

			public ViewHolder(View view) {
				mName = (TextView) view.findViewById(R.id.item_news_msg);

			}
		}

	}
}

<com.example.pullablerefresh.XListView
        android:id="@+id/list"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="5dp"
        android:background="#FFFFFF"
        android:cacheColorHint="#00000000"
        android:divider="#FFFFFF"
        android:dividerHeight="5dp"
        android:drawSelectorOnTop="false"
        android:listSelector="#00000000"
        android:scrollbars="none"
        android:scrollingCache="false" />

 

因爲代碼太多，完整代碼未給出，源碼直接下載便可

 

源碼下載： https://github.com/DickyQie/android-list-control