- 浏览: 7372 次
- 性别:
- 来自: 广州
文章分类
最新评论
Android ListView 下拉刷新 上拉更多[实例]
今天得需求是做listview+上下拉动在header和footer显示progressdialog,但不影响用户操作
直接上代码,我已经加上注释了,自己看。
package com.stay.main;
import java.net.HttpURLConnection;
import java.util.ArrayList;
import java.util.HashMap;
import org.json.JSONObject;
import android.app.Activity;
import android.app.ProgressDialog;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.os.Handler;
import android.os.HandlerThread;
import android.os.Looper;
import android.os.Message;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.AbsListView;
import android.widget.AbsListView.OnScrollListener;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import com.stay.wifi.R;
/**
* @author Stay
* 动态加载listview数据,上拉 刷新,下拉 更多
*/
public class ListViewActivity extends Activity implements OnScrollListener {
private static final int LOAD = 0;
private static final int ERROR = 0;
private static final int MEMBER = 1;
private static final int LOADED = 2;
private static final int DIALOG = 3;
private static final int FULL = 4;
private NearbyAdapter adapter;
private ListView nearby_lv;
private RelativeLayout nearby_lv_header;
private Button list_bottom_btn;
private LinearLayout list_bottom_linear;
private TextView bottom_progress_text;
private RelativeLayout nearby_lv_footer;
private Button list_header_btn;
private LinearLayout list_header_linear;
private TextView heard_progress_text;
private ArrayList<JSONObject> nearby_data = new ArrayList<JSONObject>();
private int lastItem;
private HashMap<String, Drawable> imageCache;
private com.stay.main.ListViewActivity.MyHandler myHandler;
private ProgressDialog dialog;
private int curPage = 1;
private boolean isMember = false;
private int firstItem;
public int count;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
initView();
myHandler.sendEmptyMessage(LOAD);
}
@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
DebugUtil.debug("onScrollStateChanged");
//当滚动停止且滚动的总数等于数据的总数,去加载
if (lastItem == count && scrollState == SCROLL_STATE_IDLE) {
DebugUtil.debug("onScrollStateChanged--------next");
if (curPage == 4 && !isMember) {
DebugUtil.show(this, "您不是正式会员,请申请正式会员,");
list_bottom_linear.setVisibility(View.GONE);
} else {
//加载数据
myHandler.sendEmptyMessage(LOAD);
}
return;
}
//当往上拉时更新数据,将data清空然后去重新加载
if (firstItem == 0 && scrollState == SCROLL_STATE_IDLE) {
DebugUtil.debug("onScrollStateChanged--------refresh");
curPage = 0;
myHandler.sendEmptyMessage(LOAD);
}
}
@Override
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
DebugUtil.debug("firstVisibleItem=" + firstVisibleItem);
DebugUtil.debug("visibleItemCount=" + visibleItemCount);
DebugUtil.debug("totalItemCount=" + totalItemCount);
//这里要减二,因为我加了header footer
lastItem = firstVisibleItem + visibleItemCount - 2;
firstItem = firstVisibleItem;
}
public int getData() {
try {
HttpURLConnection conn = DownloadUtil.download("http://zdevl.mapi.jjdd.com/nearby/lbs?page=" + curPage);
ArrayList<JSONObject> temp = JSONUtil.streamToJsonList(conn.getInputStream());
if (curPage == 0 && nearby_data.size() > 0) {
nearby_data.clear();
count = 0;
}
if (temp != null && temp.size() > 0) {
count += temp.size();
nearby_data.addAll(temp);
DebugUtil.debug("nearby_data.size()="+nearby_data.size());
} else {
return FULL;
}
return LOADED;
} catch (Exception e) {
return ERROR;
}
}
private Handler handler = new Handler() {
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
switch (msg.what) {
case DIALOG:
list_bottom_linear.setVisibility(View.VISIBLE);
list_header_linear.setVisibility(View.VISIBLE);
break;
case LOADED:
list_bottom_linear.setVisibility(View.GONE);
list_header_linear.setVisibility(View.GONE);
curPage++;
adapter.notifyDataSetChanged();
break;
case ERROR:
DebugUtil.debug("error,missing data");
break;
case MEMBER:
DebugUtil.debug("you must regist formal member");
break;
default:
break;
}
}
};
//创建子线程加载数据,然后更新
private class MyHandler extends Handler {
private int status;
public MyHandler(Looper looper) {
super(looper);
}
@Override
public void handleMessage(Message msg) {
synchronized (this) {
switch (msg.what) {
case LOAD:// get data from server
handler.sendEmptyMessage(DIALOG);//显示等待框
status = getData();
handler.sendEmptyMessageDelayed(status, 1000);
break;
default:
break;
}
}
}
}
public void initView() {
imageCache = new HashMap<String, Drawable>();
HandlerThread handlerThread = new HandlerThread("nearby");
// 在使用HandlerThread的getLooper()方法之前,必须先调用该类的start();
handlerThread.start();
myHandler = new MyHandler(handlerThread.getLooper());
nearby_lv = (ListView) findViewById(R.id.nearby_lv);
nearby_lv_footer = (RelativeLayout) LayoutInflater.from(ListViewActivity.this).inflate(R.layout.nearby_lv_header, null);
list_bottom_btn = (Button) nearby_lv_footer.findViewById(R.id.list_bottom_btn);
list_bottom_linear = (LinearLayout) nearby_lv_footer.findViewById(R.id.list_bottom_linear);
bottom_progress_text = (TextView) nearby_lv_footer.findViewById(R.id.progress_text);
nearby_lv_header = (RelativeLayout) LayoutInflater.from(ListViewActivity.this).inflate(R.layout.nearby_lv_header, null);
list_header_btn = (Button) nearby_lv_header.findViewById(R.id.list_bottom_btn);
list_header_linear = (LinearLayout) nearby_lv_header.findViewById(R.id.list_bottom_linear);
heard_progress_text = (TextView) nearby_lv_header.findViewById(R.id.progress_text);
list_header_btn.setText("刷新");
list_bottom_btn.setText("更多");
list_header_linear.setVisibility(View.GONE);
nearby_lv.addHeaderView(nearby_lv_header);
nearby_lv.addFooterView(nearby_lv_footer);
// list_header_btn.setOnClickListener(header_click);
adapter = new NearbyAdapter(ListViewActivity.this, nearby_data);
nearby_lv.setAdapter(adapter);
nearby_lv.setOnScrollListener(ListViewActivity.this);
}
}
核心部分就是这了,其他adapter,downloadUtil,debugUtil都在以前的帖子里,就不发了。
有问题的可以直接留言,或者加qq或加群:19370204
Own Blog:http://www.stayalways.com/
QQ:104816053
Android QQ Group:19370204
转载请注明出处http://stay.cnblogs.com 请尊重个人劳动成果。
今天得需求是做listview+上下拉动在header和footer显示progressdialog,但不影响用户操作
直接上代码,我已经加上注释了,自己看。
package com.stay.main;
import java.net.HttpURLConnection;
import java.util.ArrayList;
import java.util.HashMap;
import org.json.JSONObject;
import android.app.Activity;
import android.app.ProgressDialog;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.os.Handler;
import android.os.HandlerThread;
import android.os.Looper;
import android.os.Message;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.AbsListView;
import android.widget.AbsListView.OnScrollListener;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import com.stay.wifi.R;
/**
* @author Stay
* 动态加载listview数据,上拉 刷新,下拉 更多
*/
public class ListViewActivity extends Activity implements OnScrollListener {
private static final int LOAD = 0;
private static final int ERROR = 0;
private static final int MEMBER = 1;
private static final int LOADED = 2;
private static final int DIALOG = 3;
private static final int FULL = 4;
private NearbyAdapter adapter;
private ListView nearby_lv;
private RelativeLayout nearby_lv_header;
private Button list_bottom_btn;
private LinearLayout list_bottom_linear;
private TextView bottom_progress_text;
private RelativeLayout nearby_lv_footer;
private Button list_header_btn;
private LinearLayout list_header_linear;
private TextView heard_progress_text;
private ArrayList<JSONObject> nearby_data = new ArrayList<JSONObject>();
private int lastItem;
private HashMap<String, Drawable> imageCache;
private com.stay.main.ListViewActivity.MyHandler myHandler;
private ProgressDialog dialog;
private int curPage = 1;
private boolean isMember = false;
private int firstItem;
public int count;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
initView();
myHandler.sendEmptyMessage(LOAD);
}
@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
DebugUtil.debug("onScrollStateChanged");
//当滚动停止且滚动的总数等于数据的总数,去加载
if (lastItem == count && scrollState == SCROLL_STATE_IDLE) {
DebugUtil.debug("onScrollStateChanged--------next");
if (curPage == 4 && !isMember) {
DebugUtil.show(this, "您不是正式会员,请申请正式会员,");
list_bottom_linear.setVisibility(View.GONE);
} else {
//加载数据
myHandler.sendEmptyMessage(LOAD);
}
return;
}
//当往上拉时更新数据,将data清空然后去重新加载
if (firstItem == 0 && scrollState == SCROLL_STATE_IDLE) {
DebugUtil.debug("onScrollStateChanged--------refresh");
curPage = 0;
myHandler.sendEmptyMessage(LOAD);
}
}
@Override
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
DebugUtil.debug("firstVisibleItem=" + firstVisibleItem);
DebugUtil.debug("visibleItemCount=" + visibleItemCount);
DebugUtil.debug("totalItemCount=" + totalItemCount);
//这里要减二,因为我加了header footer
lastItem = firstVisibleItem + visibleItemCount - 2;
firstItem = firstVisibleItem;
}
public int getData() {
try {
HttpURLConnection conn = DownloadUtil.download("http://zdevl.mapi.jjdd.com/nearby/lbs?page=" + curPage);
ArrayList<JSONObject> temp = JSONUtil.streamToJsonList(conn.getInputStream());
if (curPage == 0 && nearby_data.size() > 0) {
nearby_data.clear();
count = 0;
}
if (temp != null && temp.size() > 0) {
count += temp.size();
nearby_data.addAll(temp);
DebugUtil.debug("nearby_data.size()="+nearby_data.size());
} else {
return FULL;
}
return LOADED;
} catch (Exception e) {
return ERROR;
}
}
private Handler handler = new Handler() {
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
switch (msg.what) {
case DIALOG:
list_bottom_linear.setVisibility(View.VISIBLE);
list_header_linear.setVisibility(View.VISIBLE);
break;
case LOADED:
list_bottom_linear.setVisibility(View.GONE);
list_header_linear.setVisibility(View.GONE);
curPage++;
adapter.notifyDataSetChanged();
break;
case ERROR:
DebugUtil.debug("error,missing data");
break;
case MEMBER:
DebugUtil.debug("you must regist formal member");
break;
default:
break;
}
}
};
//创建子线程加载数据,然后更新
private class MyHandler extends Handler {
private int status;
public MyHandler(Looper looper) {
super(looper);
}
@Override
public void handleMessage(Message msg) {
synchronized (this) {
switch (msg.what) {
case LOAD:// get data from server
handler.sendEmptyMessage(DIALOG);//显示等待框
status = getData();
handler.sendEmptyMessageDelayed(status, 1000);
break;
default:
break;
}
}
}
}
public void initView() {
imageCache = new HashMap<String, Drawable>();
HandlerThread handlerThread = new HandlerThread("nearby");
// 在使用HandlerThread的getLooper()方法之前,必须先调用该类的start();
handlerThread.start();
myHandler = new MyHandler(handlerThread.getLooper());
nearby_lv = (ListView) findViewById(R.id.nearby_lv);
nearby_lv_footer = (RelativeLayout) LayoutInflater.from(ListViewActivity.this).inflate(R.layout.nearby_lv_header, null);
list_bottom_btn = (Button) nearby_lv_footer.findViewById(R.id.list_bottom_btn);
list_bottom_linear = (LinearLayout) nearby_lv_footer.findViewById(R.id.list_bottom_linear);
bottom_progress_text = (TextView) nearby_lv_footer.findViewById(R.id.progress_text);
nearby_lv_header = (RelativeLayout) LayoutInflater.from(ListViewActivity.this).inflate(R.layout.nearby_lv_header, null);
list_header_btn = (Button) nearby_lv_header.findViewById(R.id.list_bottom_btn);
list_header_linear = (LinearLayout) nearby_lv_header.findViewById(R.id.list_bottom_linear);
heard_progress_text = (TextView) nearby_lv_header.findViewById(R.id.progress_text);
list_header_btn.setText("刷新");
list_bottom_btn.setText("更多");
list_header_linear.setVisibility(View.GONE);
nearby_lv.addHeaderView(nearby_lv_header);
nearby_lv.addFooterView(nearby_lv_footer);
// list_header_btn.setOnClickListener(header_click);
adapter = new NearbyAdapter(ListViewActivity.this, nearby_data);
nearby_lv.setAdapter(adapter);
nearby_lv.setOnScrollListener(ListViewActivity.this);
}
}
核心部分就是这了,其他adapter,downloadUtil,debugUtil都在以前的帖子里,就不发了。
有问题的可以直接留言,或者加qq或加群:19370204
Own Blog:http://www.stayalways.com/
QQ:104816053
Android QQ Group:19370204
转载请注明出处http://stay.cnblogs.com 请尊重个人劳动成果。
发表评论
-
Android 调用图库选择图片实现和参数详解
2014-07-09 14:08 0Android 调用图库选择图片实现和参数详解 ... -
Android中PopupWindow中有输入框时无法弹出输入法的解决办法
2014-07-09 14:06 0PopupWindow window=new PopupWi ... -
Android 侧滑(双向滑动菜单)效果
2014-07-09 14:01 1056下面看看我们如何使用它,达到我们想要的效果 public c ... -
Android中ListView分页加载数据
2014-07-09 13:53 698public class MainActivity exten ... -
listView滑动刷新代码(分页功能)
2014-07-09 11:07 738这三个代码都是从网上下载来的,但是导入到eclipse里面以后 ... -
OnScrollListener回调分析
2014-07-09 11:03 391如果adapter中的数据量很 ... -
Android 图片平铺效果bitmap
2014-05-23 22:02 5831)第一种利用系统提供的api实现 view sour ... -
文本框的类型和进度条设置的样式
2014-05-21 14:53 1290http://www.technotalkative.com/ ... -
在应用程序使用android google搜索功能
2014-05-21 14:12 412try { Intent intent = n ... -
TextView添加下划线
2014-05-21 14:09 482SpannableString contentUnderl ...
相关推荐
(网上的很多下拉刷新上拉更多 都会和长按菜单事件冲突) 控件都封装好了 你们不用再费劲力气去写啥了 直接写好OnMore方法 和OnRefresh方法 就OK了 而且控件很灵活 可以让你有选择的使用上拉刷新 或者上拉更多 我有...
android Listview下拉刷新 上拉(滑动分页)加载更多 高仿新浪微博下拉刷新,同时实现了滑动加载下一页
Android下拉刷新+上拉加载+滑动删除的ListView,简单易用,快速集成到应用。
Android ListView下拉刷新 Demo.rar
Android Listview 单独的下拉刷新和 下拉刷新以及加载更多结合.
同时也将GitHub上的一个开源的下拉刷新,上拉加载的ListView稍稍改良了一下! 原始代码地址:https://github.com/Maxwin-z/XListView-Android 问题和改进: 问题:当最开始数据不能撑满屏幕的时候,也就是比如有1...
Android完美的ListView下拉刷新 上拉更多源码
完美的ListView下拉刷新上拉加载实例Demo,已经测试完美运行
android listview下拉刷新 上拉加载更多 http://blog.csdn.net/wenwei19861106/article/details/78016472 http://blog.csdn.net/wenwei19861106/article/details/78016472
自定义ListView实现下拉刷新+加载更多功能Demo
android自定义listview控件 可实现下拉刷新、下拉加载更多的功能,代码比较简单,内有详细注释和实现方法,方便初学者学习
因为自己比较喜欢借鉴后变为自己的东西所以跟大家分享一下原生的东西!
Android 顶部可以伸缩+头部固定+listview下拉刷新、上拉请求更多
androidListView下拉刷新,上拉更多,封装好的刷新和更多接口,可自己选择是否需要上拉更新和下拉更多功能。
android listView 下拉刷新,上拉更多
Android ListView下拉刷新点击加载更多
微信小程序-微信小程序实现类似android下拉刷新上拉加载更多ListView.zip
进一步优化了 ListView的下拉刷新 和更多 的自定义控件 大家如有需要请下载后详细看代码的注释 你只需要详细阅读Activity中的代码 那里有提供完整的范例使用 如果有需要对控件再扩张可以详细看全部代码。 代码只需...
http://blog.csdn.net/qq_32673327/article/details/52012327 这是关于Demo实现的博客