Android开发ListView中下拉刷新上拉加载及带列的横向滚动实现方法
ListView 控件可使用四种不同视图显示项目。通过此控件,可将项目组成带有或不带有列标头的列,并显示伴随的图标和文本。
可使用 ListView 控件将称作 ListItem 对象的列表条目组织成下列四种不同的视图之一:1.大(标准)图标2.小图标3.列表4.报表 View 属性决定在列表中控件使用何种视图显示项目。
还可用 LabelWrap 属性控制列表中与项目关联的标签是否可换行显示。另外,还可管理列表中项目的排序方法和选定项目的外观。
相信有很人做的项目估计都用的到这个。就是ListView的下拉刷新上拉加载还有就是列的横向滚动;
PS:横向滚动带表头与固定列(相信蛮多人都有这样的需求吧?就是在ListView上支持很多列,然而设备屏幕宽度有限)
PS:这是我个人在网上找的两个示例demo结合而成的一个示例demo,还可以继续拓展,后续有时间就会更新,大家互相学习
ListView下拉刷新上拉加载示例demo原文出处:
http://www.jb51.net/article/88184.htm
ListView的横向滚动(带表头与固定列)示例demo原文出处:
http://www.jb51.net/article/88189.htm
接下来就是晒一下项目列表图
java代码
布局文件xml
效果图:
横向滚动过的图和下拉刷新,由于不会弄动态图只能这样了
下拉刷新
刷新中
上拉加载
接下来就是上代码了,请往下看
这是自定义重写了ListView控件AutoListView.java
package com.example.testlistview.widget; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Locale; import com.example.testlistview.R; import android.content.Context; import android.util.AttributeSet; import android.view.LayoutInflater; import android.view.MotionEvent; import android.view.View; import android.view.ViewGroup; import android.view.animation.LinearInterpolator; import android.view.animation.RotateAnimation; import android.widget.AbsListView; import android.widget.ImageView; import android.widget.ProgressBar; import android.widget.TextView; import android.widget.AbsListView.OnScrollListener; import android.widget.ListView; /** * @author * @create * @version 1.0 * @desc 自定义Listview�?下拉刷新,上拉加载更多 */ public class AutoListView extends ListView implements OnScrollListener { // 区分当前操作是刷新还是加�? public static final int REFRESH = 0; public static final int LOAD = 1; // 区分PULL和RELEASE的距离的大小 private static final int SPACE = 20; // 定义header的四种状态和当前状�?? private static final int NONE = 0; private static final int PULL = 1; private static final int RELEASE = 2; private static final int REFRESHING = 3; private int state; private LayoutInflater inflater; private View header; private View footer; private TextView tip; private TextView lastUpdate; private ImageView arrow; private ProgressBar refreshing; private TextView noData; private TextView loadFull; private TextView more; private ProgressBar loading; private RotateAnimation animation; private RotateAnimation reverseAnimation; private int startY; private int firstVisibleItem; private int scrollState; private int headerContentInitialHeight; private int headerContentHeight; // 只有在listview第一个item显示的时候(listview滑到了顶部)才进行下拉刷新, 否则此时的下拉只是滑动listview private boolean isRecorded; private boolean isLoading;// 判断是否正在加载 private boolean loadEnable = true;// �?启或者关闭加载更多功�? private boolean isLoadFull; private int pageSize = 10; private OnRefreshListener onRefreshListener; private OnLoadListener onLoadListener; public AutoListView(Context context) { super(context); initView(context); } public AutoListView(Context context, AttributeSet attrs) { super(context, attrs); initView(context); } public AutoListView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); initView(context); } // 下拉刷新监听 public void setOnRefreshListener(OnRefreshListener onRefreshListener) { this.onRefreshListener = onRefreshListener; } // 加载更多监听 public void setOnLoadListener(OnLoadListener onLoadListener) { this.loadEnable = true; this.onLoadListener = onLoadListener; } public boolean isLoadEnable() { return loadEnable; } // 这里的开启或者关闭加载更多,并不支持动�?�调�? public void setLoadEnable(boolean loadEnable) { this.loadEnable = loadEnable; this.removeFooterView(footer); } public int getPageSize() { return pageSize; } public void setPageSize(int pageSize) { this.pageSize = pageSize; } // 初始化组�? private void initView(Context context) { // 设置箭头特效 animation = new RotateAnimation(0, -180, RotateAnimation.RELATIVE_TO_SELF, 0.5f, RotateAnimation.RELATIVE_TO_SELF, 0.5f); animation.setInterpolator(new LinearInterpolator()); animation.setDuration(1000); animation.setFillAfter(true); reverseAnimation = new RotateAnimation(-180, 0, RotateAnimation.RELATIVE_TO_SELF, 0.5f, RotateAnimation.RELATIVE_TO_SELF, 0.5f); reverseAnimation.setInterpolator(new LinearInterpolator()); reverseAnimation.setDuration(1000); reverseAnimation.setFillAfter(true); inflater = LayoutInflater.from(context); footer = inflater.inflate(R.layout.listview_footer, null); loadFull = (TextView) footer.findViewById(R.id.loadFull); noData = (TextView) footer.findViewById(R.id.noData); more = (TextView) footer.findViewById(R.id.more); loading = (ProgressBar) footer.findViewById(R.id.loading); header = inflater.inflate(R.layout.pull_to_refresh_header, null); arrow = (ImageView) header.findViewById(R.id.arrow); tip = (TextView) header.findViewById(R.id.tip); lastUpdate = (TextView) header.findViewById(R.id.lastUpdate); refreshing = (ProgressBar) header.findViewById(R.id.refreshing); // 为listview添加头部和尾部,并进行初始化 headerContentInitialHeight = header.getPaddingTop(); measureView(header); headerContentHeight = header.getMeasuredHeight(); topPadding(-headerContentHeight); this.addHeaderView(header); this.addFooterView(footer); this.setOnScrollListener(this); } public void onRefresh() { if (onRefreshListener != null) { onRefreshListener.onRefresh(); } } public void onLoad() { if (onLoadListener != null) { onLoadListener.onLoad(); } } public void onRefreshComplete(String updateTime) { lastUpdate.setText(this.getContext().getString(R.string.lastUpdateTime, getCurrentTime())); state = NONE; refreshHeaderViewByState(); } // 用于下拉刷新结束后的回调 public void onRefreshComplete() { String currentTime = getCurrentTime(); onRefreshComplete(currentTime); } // 用于加载更多结束后的回调 public void onLoadComplete() { isLoading = false; } @Override public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) { this.firstVisibleItem = firstVisibleItem; } @Override public void onScrollStateChanged(AbsListView view, int scrollState) { this.scrollState = scrollState; ifNeedLoad(view, scrollState); } // 根据listview滑动的状态判断是否需要加载更�? private void ifNeedLoad(AbsListView view, int scrollState) { if (!loadEnable) { return; } try { if (scrollState == OnScrollListener.SCROLL_STATE_IDLE && !isLoading && view.getLastVisiblePosition() == view.getPositionForView(footer) && !isLoadFull) { onLoad(); isLoading = true; } } catch (Exception e) { } } /** * 监听触摸事件,解读手�? */ @Override public boolean onTouchEvent(MotionEvent ev) { switch (ev.getAction()) { // case MotionEvent.ACTION_DOWN: // if (firstVisibleItem == 0) { // isRecorded = true; // startY = (int) ev.getY(); // } // break; case MotionEvent.ACTION_CANCEL: case MotionEvent.ACTION_UP: if (state == PULL) { state = NONE; refreshHeaderViewByState(); } else if (state == RELEASE) { state = REFRESHING; refreshHeaderViewByState(); onRefresh(); } isRecorded = false; break; case MotionEvent.ACTION_MOVE: whenMove(ev); break; } return super.onTouchEvent(ev); } @Override public boolean onInterceptTouchEvent(MotionEvent ev) { if (ev.getAction() == MotionEvent.ACTION_DOWN) { if (firstVisibleItem == 0) { isRecorded = true; startY = (int) ev.getY(); } } return super.onInterceptTouchEvent(ev); } // 解读手势,刷新header状�?? private void whenMove(MotionEvent ev) { if (!isRecorded) { return; } int tmpY = (int) ev.getY(); int space = tmpY - startY; int topPadding = space - headerContentHeight; switch (state) { case NONE: if (space > 0) { state = PULL; refreshHeaderViewByState(); } break; case PULL: topPadding(topPadding); if (scrollState == SCROLL_STATE_TOUCH_SCROLL && space > headerContentHeight + SPACE) { state = RELEASE; refreshHeaderViewByState(); } break; case RELEASE: topPadding(topPadding); if (space > 0 && space < headerContentHeight + SPACE) { state = PULL; refreshHeaderViewByState(); } else if (space <= 0) { state = NONE; refreshHeaderViewByState(); } break; } } // 调整header的大小�?�其实调整的只是距离顶部的高度�?? private void topPadding(int topPadding) { header.setPadding(header.getPaddingLeft(), topPadding, header.getPaddingRight(), header.getPaddingBottom()); header.invalidate(); } /** * 这个方法是根据结果的大小来决定footer显示的�?? * <p> * 这里假定每次请求的条数为10。如果请求到�?10条�?�则认为还有数据。如过结果不�?10条,则认为数据已经全部加载, * 这时footer显示已经全部加载 * </p> * * @param resultSize */ public void setResultSize(int resultSize) { if (resultSize == 0) { isLoadFull = true; loadFull.setVisibility(View.GONE); loading.setVisibility(View.GONE); more.setVisibility(View.GONE); noData.setVisibility(View.VISIBLE); } else if (resultSize > 0 && resultSize < pageSize) { isLoadFull = true; loadFull.setVisibility(View.VISIBLE); loading.setVisibility(View.GONE); more.setVisibility(View.GONE); noData.setVisibility(View.GONE); } else if (resultSize == pageSize) { isLoadFull = false; loadFull.setVisibility(View.GONE); loading.setVisibility(View.VISIBLE); more.setVisibility(View.VISIBLE); noData.setVisibility(View.GONE); } } // 根据当前状�?�,调整header private void refreshHeaderViewByState() { switch (state) { case NONE: topPadding(-headerContentHeight); tip.setText(R.string.pull_to_refresh); refreshing.setVisibility(View.GONE); arrow.clearAnimation(); arrow.setImageResource(R.drawable.pull_to_refresh_arrow); break; case PULL: arrow.setVisibility(View.VISIBLE); tip.setVisibility(View.VISIBLE); lastUpdate.setVisibility(View.VISIBLE); refreshing.setVisibility(View.GONE); tip.setText(R.string.pull_to_refresh); arrow.clearAnimation(); arrow.setAnimation(reverseAnimation); break; case RELEASE: arrow.setVisibility(View.VISIBLE); tip.setVisibility(View.VISIBLE); lastUpdate.setVisibility(View.VISIBLE); refreshing.setVisibility(View.GONE); tip.setText(R.string.pull_to_refresh); tip.setText(R.string.release_to_refresh); arrow.clearAnimation(); arrow.setAnimation(animation); break; case REFRESHING: topPadding(headerContentInitialHeight); refreshing.setVisibility(View.VISIBLE); arrow.clearAnimation(); arrow.setVisibility(View.GONE); tip.setVisibility(View.GONE); lastUpdate.setVisibility(View.GONE); break; } } // 用来计算header大小的�?�比较隐晦�?�因为header的初始高度就�?0,貌似可以不用�? private void measureView(View child) { ViewGroup.LayoutParams p = child.getLayoutParams(); if (p == null) { p = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT); } int childWidthSpec = ViewGroup.getChildMeasureSpec(0, 0 + 0, p.width); int lpHeight = p.height; int childHeightSpec; if (lpHeight > 0) { childHeightSpec = MeasureSpec.makeMeasureSpec(lpHeight, MeasureSpec.EXACTLY); } else { childHeightSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED); } child.measure(childWidthSpec, childHeightSpec); } /* * 定义下拉刷新接口 */ public interface OnRefreshListener { public void onRefresh(); } /* * 定义加载更多接口 */ public interface OnLoadListener { public void onLoad(); } public String getCurrentTime(String format) { Date date = new Date(); SimpleDateFormat sdf = new SimpleDateFormat(format, Locale.getDefault()); String currentTime = sdf.format(date); return currentTime; } public String getCurrentTime() { return getCurrentTime("yyyy-MM-dd HH:mm:ss"); } }
这是自定义HorizontalScrollView的重写 CHScrollView.java
package com.example.testlistview.widget; import java.util.ArrayList; import java.util.List; import com.example.testlistview.widget.CHScrollView.CHScrollViewHelper; import android.content.Context; import android.util.AttributeSet; import android.util.Log; import android.view.MotionEvent; import android.widget.HorizontalScrollView; import android.widget.Toast; public class CHScrollView extends HorizontalScrollView { private Context context; float startx = 0; float offset; public CHScrollView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); this.context = context; } public CHScrollView(Context context, AttributeSet attrs) { super(context, attrs); this.context = context; } public CHScrollView(Context context) { super(context); this.context = context; } @Override public boolean onTouchEvent(MotionEvent ev) { // 进行触摸赋值 CHScrollViewHelper.mTouchView = this; return super.onTouchEvent(ev); } @Override protected void onScrollChanged(int l, int t, int oldl, int oldt) { // 当当前的CHSCrollView被触摸时,滑动其它 if (CHScrollViewHelper.mTouchView == this) { onScrollChanged(l, t, oldl, oldt, 0); } else { super.onScrollChanged(l, t, oldl, oldt); } } public void onScrollChanged(int l, int t, int oldl, int oldt, int none) { for (CHScrollView scrollView : CHScrollViewHelper.mHScrollViews) { // 防止重复滑动 if (CHScrollViewHelper.mTouchView != scrollView) scrollView.smoothScrollTo(l, t); } } public static class CHScrollViewHelper { public static HorizontalScrollView mTouchView; public static List<CHScrollView> mHScrollViews = new ArrayList<CHScrollView>(); public static void addHViews(final CHScrollView hScrollView, AutoListView autoListView) { if (!CHScrollViewHelper.mHScrollViews.isEmpty()) { int size = CHScrollViewHelper.mHScrollViews.size(); CHScrollView scrollView = CHScrollViewHelper.mHScrollViews.get(size - 1); final int scrollX = scrollView.getScrollX(); // 第一次满屏后,向下滑动,有一条数据在开始时未加入 if (scrollX != 0) { autoListView.post(new Runnable() { @Override public void run() { // 当listView刷新完成之后,把该条移动到最终位置 hScrollView.scrollTo(scrollX, 0); } }); } } CHScrollViewHelper.mHScrollViews.add(hScrollView); } } }
这是ListView的适配器adapter ,ListViewScrollAdapter.java
package com.example.testlistview.adapter; import java.util.List; import java.util.Map; import com.example.testlistview.R; import com.example.testlistview.widget.AutoListView; import com.example.testlistview.widget.CHScrollView; import com.example.testlistview.widget.CHScrollView.CHScrollViewHelper; import android.content.Context; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.SimpleAdapter; import android.widget.TextView; public class ListViewScrollAdapter extends SimpleAdapter { private List<? extends Map<String, ?>> datas; private int res; private String[] from; private int[] to; private Context context; private int resScroll; private AutoListView lstv; public ListViewScrollAdapter(Context context, List<? extends Map<String, ?>> data, int resource, String[] from, int[] to, int resourceItem,AutoListView autoListView) { super(context, data, resource, from, to); this.context = context; this.datas = data; this.res = resource; this.from = from; this.to = to; this.resScroll = resourceItem; this.lstv = autoListView; } @Override public int getCount() { return this.datas.size(); } @Override public View getView(int position, View convertView, ViewGroup parent) { View v = convertView; if (v == null) { v = LayoutInflater.from(context).inflate(res, null); // 第一次初始化的时候装进来 CHScrollViewHelper.addHViews((CHScrollView) v.findViewById(resScroll), lstv); View[] views = new View[to.length]; for (int i = 0; i < to.length; i++) { View tv = v.findViewById(to[i]); views[i] = tv; } v.setTag(views); } v.setBackgroundResource(R.drawable.selector_bg_white_gray); View[] holders = (View[]) v.getTag(); int len = holders.length; for (int i = 0; i < len; i++) { ((TextView) holders[i]).setText(this.datas.get(position).get(from[i]).toString()); } return v; } public Context getContext() { return context; } }
这是MainActivity.java
package com.example.testlistview; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.view.View; import android.widget.AdapterView.OnItemClickListener; import android.widget.AdapterView; import android.widget.TextView; import android.widget.Toast; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import com.example.testlistview.widget.AutoListView.OnLoadListener; import com.example.testlistview.widget.AutoListView.OnRefreshListener; import com.example.testlistview.R; import com.example.testlistview.adapter.ListViewScrollAdapter; import com.example.testlistview.widget.AutoListView; import com.example.testlistview.widget.CHScrollView; import com.example.testlistview.widget.CHScrollView.CHScrollViewHelper; import android.annotation.SuppressLint; import android.app.Activity; public class MainActivity extends Activity implements OnRefreshListener, OnLoadListener, OnItemClickListener { private AutoListView lstv; private CHScrollView headerScroll; List<Map<String, String>> list = new ArrayList<Map<String, String>>(); private ListViewScrollAdapter adapter; @SuppressLint("HandlerLeak") private Handler handler = new Handler() { @SuppressWarnings("unchecked") public void handleMessage(Message msg) { List<Map<String, String>> result = (List<Map<String, String>>) msg.obj; switch (msg.what) { case AutoListView.REFRESH: lstv.onRefreshComplete(); list.clear(); list.addAll(result); break; case AutoListView.LOAD: lstv.onLoadComplete(); list.addAll(result); break; } lstv.setResultSize(result.size()); adapter.notifyDataSetChanged(); }; }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initView(); initData(); } private void initView() { headerScroll = (CHScrollView) findViewById(R.id.item_scroll_title); CHScrollViewHelper.mHScrollViews.clear(); // 添加头滑动事件 CHScrollViewHelper.mHScrollViews.add(headerScroll); lstv = (AutoListView) findViewById(R.id.scroll_list); adapter = new ListViewScrollAdapter(this, list, R.layout.auto_listview_item, new String[] { "title", "data_1", "data_2", "data_3", "data_4", "data_5", "data_6", }, new int[] { R.id.item_title, R.id.item_data1, R.id.item_data2, R.id.item_data3, R.id.item_data4, R.id.item_data5, R.id.item_data6 }, R.id.item_scroll, lstv); lstv.setAdapter(adapter); lstv.setOnRefreshListener(this); lstv.setOnLoadListener(this); lstv.setOnItemClickListener(this); } private void initData() { loadData(AutoListView.REFRESH); } private void loadData(final int what) { // 这里模拟从服务器获取数据 new Thread(new Runnable() { @Override public void run() { try { Thread.sleep(700); } catch (InterruptedException e) { e.printStackTrace(); } Message msg = handler.obtainMessage(); msg.what = what; msg.obj = getData(); handler.sendMessage(msg); } }).start(); } @Override public void onRefresh() { loadData(AutoListView.REFRESH); } @Override public void onLoad() { loadData(AutoListView.LOAD); } @Override public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { try { TextView textView = (TextView) arg1.findViewById(R.id.item_data2); Toast.makeText(this, "你点击了:" + textView.getText(), Toast.LENGTH_SHORT).show(); } catch (Exception ex) { } } // 测试数据 public List<Map<String, String>> getData() { List<Map<String, String>> result = new ArrayList<Map<String, String>>(); Map<String, String> data = null; for (int i = 0; i < 10; i++) { data = new HashMap<String, String>(); data.put("title", "Title_" + i); data.put("data_" + 1, "Date_" + 1 + "_" + i); data.put("data_" + 2, "Date_" + 2 + "_" + i); data.put("data_" + 3, "Date_" + 3 + "_" + i); data.put("data_" + 4, "Date_" + 4 + "_" + i); data.put("data_" + 5, "Date_" + 5 + "_" + i); data.put("data_" + 6, "Date_" + 6 + "_" + i); result.add(data); } return result; } }
这是layout布局文件 activity_main.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:background="#ccc" android:minHeight="40dip" android:orientation="horizontal" > <TextView android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_weight="2" android:gravity="center" android:text="表头测试" android:textColor="#850" /> <com.example.testlistview.widget.CHScrollView android:id="@+id/item_scroll_title" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_weight="1" android:scrollbars="none" > <LinearLayout android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="horizontal" > <TextView android:layout_width="100dip" android:layout_height="fill_parent" android:gravity="center" android:text="Date1" android:textColor="#850" /> <TextView android:layout_width="100dip" android:layout_height="fill_parent" android:gravity="center" android:text="Date2" android:textColor="#850" /> <TextView android:layout_width="100dip" android:layout_height="fill_parent" android:gravity="center" android:text="Date3" android:textColor="#850" /> <TextView android:layout_width="100dip" android:layout_height="fill_parent" android:gravity="center" android:text="Date4" android:textColor="#850" /> <TextView android:layout_width="100dip" android:layout_height="fill_parent" android:gravity="center" android:text="Date5" android:textColor="#850" /> <TextView android:layout_width="100dip" android:layout_height="fill_parent" android:gravity="center" android:text="Date6" android:textColor="#850" /> </LinearLayout> </com.example.testlistview.widget.CHScrollView> </LinearLayout> <com.example.testlistview.widget.AutoListView android:id="@+id/scroll_list" android:layout_width="match_parent" android:layout_height="fill_parent" android:cacheColorHint="@android:color/transparent" /> </LinearLayout>
auto_listview_item.xml布局文件 ListView的item布局文件
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:descendantFocusability="blocksDescendants" android:minHeight="50dip" android:orientation="horizontal" > <TextView android:id="@+id/item_title" android:layout_width="fill_parent" android:layout_height="match_parent" android:layout_weight="2" android:gravity="center" android:text="表头测试" /> <com.example.testlistview.widget.CHScrollView android:id="@+id/item_scroll" android:layout_width="fill_parent" android:layout_height="match_parent" android:layout_weight="1" android:focusable="false" android:scrollbars="none" > <LinearLayout android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="horizontal" > <TextView android:id="@+id/item_data1" android:layout_width="100dip" android:layout_height="fill_parent" android:gravity="center" android:textColor="#011" /> <TextView android:id="@+id/item_data2" android:layout_width="100dip" android:layout_height="fill_parent" android:gravity="center" android:textColor="#191" /> <TextView android:id="@+id/item_data3" android:layout_width="100dip" android:layout_height="fill_parent" android:gravity="center" android:textColor="#101" /> <TextView android:id="@+id/item_data4" android:layout_width="100dip" android:layout_height="fill_parent" android:gravity="center" android:textColor="#111" /> <TextView android:id="@+id/item_data5" android:layout_width="100dip" android:layout_height="fill_parent" android:gravity="center" android:textColor="#071" /> <TextView android:id="@+id/item_data6" android:layout_width="100dip" android:layout_height="fill_parent" android:gravity="center" android:textColor="#910" /> </LinearLayout> </com.example.testlistview.widget.CHScrollView> </LinearLayout>
Listview底部提示正在加载中的布局文件 listview_footer.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center" android:orientation="horizontal" > <TextView android:id="@+id/loadFull" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="center" android:padding="5dp" android:text="@string/load_full" android:visibility="gone" /> <TextView android:id="@+id/noData" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="center" android:padding="5dp" android:text="@string/no_data" android:visibility="gone" /> <TextView android:id="@+id/more" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="center" android:padding="5dp" android:text="@string/more" /> <ProgressBar android:id="@+id/loading" style="@style/customProgressBar" /> </LinearLayout>
ListView顶部提示下拉刷新的一些状态布局xml文件 pull_to_refresh_header.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center" android:orientation="vertical" > <RelativeLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:paddingBottom="5dp" > <LinearLayout android:id="@+id/layout" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:layout_centerVertical="true" android:orientation="vertical" > <ProgressBar android:id="@+id/refreshing" style="@style/customProgressBar" /> <TextView android:id="@+id/tip" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" /> <TextView android:id="@+id/lastUpdate" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:textSize="12sp" /> </LinearLayout> <ImageView android:id="@+id/arrow" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerVertical="true" android:layout_marginRight="20dp" android:layout_toLeftOf="@id/layout" android:contentDescription="@string/d" android:src="@drawable/pull_to_refresh_arrow" /> </RelativeLayout> <ImageView android:layout_width="match_parent" android:layout_height="wrap_content" android:background="@drawable/h_line" android:contentDescription="@string/d" /> </LinearLayout> <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="15" />
Android编译和目标版本是4.0.3
以上所述是小编给大家介绍的Android开发ListView中下拉刷新上拉加载及带列的横向滚动实现方法,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对我们网站的支持!