package com.mzeat.ui; import java.util.ArrayList; import java.util.HashMap; import java.util.Map; import com.handmark.pulltorefresh.library.PullToRefreshBase; import com.handmark.pulltorefresh.library.PullToRefreshListView; import com.mzeat.MzeatApplication; import com.mzeat.R; import com.mzeat.api.MzeatService; import com.mzeat.db.InviteDb; import com.mzeat.model.Invite; import com.mzeat.model.InviteReturn; import com.mzeat.model.MyOrderItem; import com.mzeat.model.Page; import com.mzeat.task.GenericTask; import com.mzeat.task.TaskAdapter; import com.mzeat.task.TaskParams; import com.mzeat.task.TaskResult; import com.mzeat.ui.adapter.InviteListAdapter; import com.mzeat.util.CheckNetworkConnection; import com.mzeat.util.ConnectionChangeReceiver; import com.mzeat.util.ShowToast; import android.app.Activity; import android.app.ProgressDialog; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.os.Bundle; import android.util.Log; import android.view.KeyEvent; import android.view.View; import android.view.View.OnClickListener; import android.widget.ImageButton; import android.widget.ListView; import android.widget.TextView; public class InviteActivity extends BaseActivity { private NetworkChange networkChange; private PullToRefreshListView mListView; private InviteListAdapter mAdapter; private LoadDataTask mLoadDataTask; private int load_result = 0; public int load_fromnetwork_success = 1; public int load_fromdb_success = 2; private boolean save_local = false; private InviteDb mDb; private ImageButton btn_back; private TextView tv_title; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.activity_invite); mListView = (PullToRefreshListView) findViewById(R.id.invite_list); mListView.setOnRefreshListener(RefreshListener); mAdapter = new InviteListAdapter(this); btn_back = (ImageButton) findViewById(R.id.btn_back); btn_back.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub finish(); } }); tv_title = (TextView) findViewById(R.id.tv_title); tv_title.setText(R.string.title_invite); } ArrayList<Invite> mInvites = new ArrayList<Invite>(); private TaskAdapter mTaskListener = new TaskAdapter() { ProgressDialog pg; @Override public String getName() { // TODO Auto-generated method stub return null; } public void onPreExecute(GenericTask task) { // TODO 任务开始执行,可提供进度条展现 mListView.setRefreshing(true); mListView.setDisableScrollingWhileRefreshing(true); } public void onPostExecute(GenericTask task, TaskResult result) { mListView.onRefreshComplete(); // Page mPage = new Page(); // TODO 判断TaskReult的返回值是否ok if (result == TaskResult.OK) { if (page == 1) { mInvites = mLoadDataTask.getInvite(); mAdapter.setDataList(mInvites); mAdapter.notifyDataSetChanged(); mListView.setAdapter(mAdapter); load_result = load_fromnetwork_success; if (!save_local) { mDb = new InviteDb(InviteActivity.this); mDb.add(mInvites); mDb.closeDB(); } page = page + 1; mLoadDataTask = null; } else { page = page + 1; mInvites.addAll(mLoadDataTask.getInvite()); mAdapter.notifyDataSetChanged(); mLoadDataTask = null; } // ShowToast.showGetSuccess(FoodActivity.this); } else if (result == TaskResult.FAILED) { mLoadDataTask = null; ShowToast.showGetFaile(InviteActivity.this); } else if (result == TaskResult.IO_ERROR) { mLoadDataTask = null; ShowToast.showError(InviteActivity.this); } else if (result == TaskResult.NO_MORE_DATA) { mLoadDataTask = null; ShowToast.showNomoredata(InviteActivity.this); } else if (result == TaskResult.NOT_FOLLOWED_ERROR) { ShowToast.showNoOrder(InviteActivity.this); } } public void onProgressUpdate(GenericTask task, Object param) { // TODO 如果是下载,可在此显示下载进度 } public void onCancelled(GenericTask task) { // TODO 后台任务被取消的事件回调,适当情况下可以提示用户,如“下载已取消” mListView.onRefreshComplete(); } }; private int page = 1; private ArrayList<Invite> invites = new ArrayList<Invite>(); private Page mPage = null; private InviteReturn result = new InviteReturn(); private class LoadDataTask extends GenericTask { @Override protected TaskResult _doInBackground(TaskParams... params) { // TODO Auto-generated method stub if (mPage == null) { result = MzeatApplication.getInstance().getService() .getInviteReturn(String.valueOf(page)); int code = Integer.valueOf(result.getOpen()); if (code == MzeatService.RESULT_OK) { invites = (ArrayList<Invite>) result.getItem(); Log.e("invite", String.valueOf(invites.size())); mPage = (Page) result.getPage(); return TaskResult.OK; } else if (code == MzeatService.RESULT_FAILE) { return TaskResult.FAILED; } else if (code == MzeatService.RESULT_NODATA) { return TaskResult.NOT_FOLLOWED_ERROR; } else { return TaskResult.IO_ERROR; } } else { if (page <= Integer.valueOf(mPage.getPage_total())) { result = MzeatApplication.getInstance().getService() .getInviteReturn(String.valueOf(page)); int code = Integer.valueOf(result.getOpen()); if (code == MzeatService.RESULT_OK) { invites = (ArrayList<Invite>) result.getItem(); mPage = (Page) result.getPage(); return TaskResult.OK; } else if (code == MzeatService.RESULT_FAILE) { return TaskResult.FAILED; } else { return TaskResult.IO_ERROR; } } else { return TaskResult.NO_MORE_DATA; } } } @Override protected void onCancelled() { // TODO Auto-generated method stub super.onCancelled(); } private ArrayList<Invite> getInvite() { return invites; } } private void loaddata() { /** * 重要!!需要判断当前任务是否正在运行,否则重复执行会出错,典型的场景就是用户点击登录按钮多次 */ if (null != mLoadDataTask && mLoadDataTask.getStatus() == GenericTask.Status.RUNNING) return; mLoadDataTask = new LoadDataTask(); mLoadDataTask.setListener(mTaskListener); try { mLoadDataTask.execute(); } catch (Exception e) { // TODO: handle exception e.printStackTrace(); } } private PullToRefreshBase.OnRefreshListener<ListView> RefreshListener = new PullToRefreshBase.OnRefreshListener<ListView>() { @Override public void onRefresh(PullToRefreshBase<ListView> refreshView) { if (CheckNetworkConnection .checkNetworkConnection(InviteActivity.this)) { loaddata(); } else { ShowToast.showToastShort(InviteActivity.this, R.string.your_network_has_disconnected); mListView.onRefreshComplete(); } } }; public class NetworkChange extends ConnectionChangeReceiver { @Override public void onReceive(Context context, Intent intent) { // TODO Auto-generated method stub super.onReceive(context, intent); if (super.success == true) { if (load_result != load_fromnetwork_success) { getOldData(); loaddata(); super.success = false; } } else { if (load_result == 0) { getOldData(); } } } } private void getOldData() { // mShoppings = new ArrayList<Shopping>(); mDb = new InviteDb(this); mInvites = mDb.getInvite(); mDb.closeDB(); if (mInvites.size() != 0) { mAdapter.setDataList(mInvites); mListView.setAdapter(mAdapter); load_result = load_fromdb_success; } } @Override protected void onDestroy() { // TODO Auto-generated method stub // Log.e("onDestroy()", "onDestroy()"); if (null != mLoadDataTask && mLoadDataTask.getStatus() == LoadDataTask.Status.RUNNING) { mLoadDataTask.cancel(true); } super.onDestroy(); } @Override protected void onResume() { // TODO Auto-generated method stub super.onResume(); networkChange = new NetworkChange(); IntentFilter filter = new IntentFilter(); filter.addAction("android.net.conn.CONNECTIVITY_CHANGE"); registerReceiver(networkChange, filter); } @Override protected void onPause() { // TODO Auto-generated method stub super.onPause(); try { unregisterReceiver(networkChange); } catch (Exception e) { // TODO: handle exception e.printStackTrace(); } } @Override protected void onSaveInstanceState(Bundle outState) { // TODO Auto-generated method stub super.onSaveInstanceState(outState); Log.e("food onSaveInstanceState", "food onSaveInstanceState"); } public boolean onKeyDown(int keyCode, KeyEvent event) {// 捕捉返回键 if (keyCode == KeyEvent.KEYCODE_BACK) { if (null != mLoadDataTask) { mLoadDataTask.cancel(true); mLoadDataTask = null; mListView.onRefreshComplete(); return true; } finish(); return true; } return super.onKeyDown(keyCode, event); } }