点击按钮，先自动进行下拉刷新，也可以手动刷新，刷新完后，最后就多一行数据。有四个选项卡。

前两天导师要求做一个给本科学生预定机房座位的app，出发点来自这里。做着做着遇到很多问题，都解决了。这个效果感觉还不错，整理一下。

MainActivity

package com.example.fragmentmytest;import android.content.DialogInterface;import android.graphics.Color;import android.os.Bundle;import android.support.v4.app.FragmentActivity;import android.support.v4.app.FragmentManager;import android.support.v4.app.FragmentTransaction;import android.text.TextUtils;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.TextView;import com.example.dialog.CustomDialog;import com.example.dialog.CustomDialogChangePwd;import com.example.dialog.CustomDialogSignUp;import com.example.myapplication.CustomApplication;import com.example.utils.ToastUtils;public class MainActivity extends FragmentActivity {public static final String serverAddress = "http://192.168.1.101";public static final String serverPort = "8080";OneFragment onefragment;TwoFragment twofragment;ThreeFragment threefragment;FourFragment fourfragment;Button btn1, btn2, btn3, btn4;OnClickListener clicklistener;TextView stu_msg;private CustomApplication app;/*** 用于对Fragment进行管理*/FragmentManager fragementManager;protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);app = (CustomApplication) getApplication(); // 获得CustomApplication对象// 必须继承FragmentActivity才能用getSupportFragmentManager()；最好使用v4.app，已经没怎么有人使用app中的了fragementManager = getSupportFragmentManager();init();// 第一次启动时选中第0个tabsetTabSelection(0);// 不能左右滑动的默认值}public void init() {stu_msg = (TextView) findViewById(R.id.stu_msg);btn1 = (Button) findViewById(R.id.btn1);btn2 = (Button) findViewById(R.id.btn2);btn3 = (Button) findViewById(R.id.btn3);btn4 = (Button) findViewById(R.id.btn4);clicklistener = new OnClickListener() {public void onClick(View arg0) {int id = arg0.getId();switch (id) {case R.id.btn1:setTabSelection(0);break;case R.id.btn2:setTabSelection(1);break;case R.id.btn3:setTabSelection(2);break;case R.id.btn4:setTabSelection(3);break;default:break;}}};btn1.setOnClickListener(clicklistener);btn2.setOnClickListener(clicklistener);btn3.setOnClickListener(clicklistener);btn4.setOnClickListener(clicklistener);}private void setTabSelection(int index) {clearSelection();// 每次选中之前先清楚掉上次的选中状态// 开启一个Fragment事务FragmentTransaction transaction = fragementManager.beginTransaction();// 先隐藏掉所有的Fragment，以防止有多个Fragment显示在界面上的情况hideFragements(transaction);switch (index) {case 0:btn1.setBackgroundColor(Color.parseColor("#CFEFEF"));btn1.setTextColor(Color.parseColor("#FFFFFF"));app.setRoom(btn1.getText().toString());if (onefragment == null) {onefragment = new OneFragment();transaction.add(R.id.framelayout, onefragment);} else {transaction.show(onefragment);onefragment.mPullRefreshListView.setRefreshing(true);}break;case 1:btn2.setBackgroundColor(Color.parseColor("#CFEFEF"));btn2.setTextColor(Color.parseColor("#FFFFFF"));app.setRoom(btn2.getText().toString());if (twofragment == null) {twofragment = new TwoFragment();transaction.add(R.id.framelayout, twofragment);} else {transaction.show(twofragment);twofragment.mPullRefreshListView.setRefreshing(true);}break;case 2:btn3.setBackgroundColor(Color.parseColor("#CFEFEF"));btn3.setTextColor(Color.parseColor("#FFFFFF"));app.setRoom(btn3.getText().toString());if (threefragment == null) {threefragment = new ThreeFragment();transaction.add(R.id.framelayout, threefragment);} else {transaction.show(threefragment);threefragment.mPullRefreshListView.setRefreshing(true);}break;case 3:btn4.setBackgroundColor(Color.parseColor("#CFEFEF"));btn4.setTextColor(Color.parseColor("#FFFFFF"));app.setRoom(btn4.getText().toString());if (fourfragment == null) {fourfragment = new FourFragment();transaction.add(R.id.framelayout, fourfragment);} else {transaction.show(fourfragment);fourfragment.mPullRefreshListView.setRefreshing(true);}break;default:break;}transaction.commit();}/*** 清除掉所有的选中状态。*/private void clearSelection() {btn1.setBackgroundColor(Color.parseColor("#EFEFEF"));btn1.setTextColor(Color.parseColor("#234567"));btn2.setBackgroundColor(Color.parseColor("#EFEFEF"));btn2.setTextColor(Color.parseColor("#234567"));btn3.setBackgroundColor(Color.parseColor("#EFEFEF"));btn3.setTextColor(Color.parseColor("#234567"));btn4.setBackgroundColor(Color.parseColor("#EFEFEF"));btn4.setTextColor(Color.parseColor("#234567"));}/*** 将所有的Fragment都置为隐藏状态。* * @param transaction* 用于对Fragment执行操作的事务*/private void hideFragements(FragmentTransaction transaction) {if (onefragment != null) {transaction.hide(onefragment);}if (twofragment != null) {transaction.hide(twofragment);}if (threefragment != null) {transaction.hide(threefragment);}if (fourfragment != null) {transaction.hide(fourfragment);}}}

四个Fragment都差不多，这里是第一个：

package com.example.fragmentmytest;import java.util.ArrayList;import java.util.LinkedList;import java.util.List;import android.app.Activity;import android.os.AsyncTask;import android.os.Bundle;import android.support.v4.app.Fragment;import android.util.Log;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.AdapterView;import android.widget.ArrayAdapter;import android.widget.AdapterView.OnItemClickListener;import android.widget.ListView;import com.example.adapter.MyAdapter;import com.example.dao.ComputerRoomStatus;import com.example.utils.ToastUtils;import com.handmark.pulltorefresh.library.PullToRefreshBase;import com.handmark.pulltorefresh.library.PullToRefreshBase.Mode;import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener2;import com.handmark.pulltorefresh.library.PullToRefreshListView;public class OneFragment extends Fragment {String room = "204";public PullToRefreshListView mPullRefreshListView;// private ArrayAdapter<String> mAdapter;private int mItemCount = 9;// private LinkedList<String> mListItems;private MyAdapter mAdapter;private List<ComputerRoomStatus> data;public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceStatus) {View view = inflater.inflate(R.layout.twolayout, container, false);mPullRefreshListView = (PullToRefreshListView) view.findViewById(R.id.pull_refresh_list_2);mPullRefreshListView.setMode(Mode.PULL_FROM_START);return view;}@Overridepublic void onViewCreated(View view, Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onViewCreated(view, savedInstanceState);initDatas();// mAdapter1 = new MyAdapter(getActivity(), data);mAdapter = new MyAdapter(getActivity(), data, room,mPullRefreshListView);mPullRefreshListView.setAdapter(mAdapter);mPullRefreshListView.setOnRefreshListener(new OnRefreshListener2<ListView>() {@Overridepublic void onPullDownToRefresh(PullToRefreshBase<ListView> refreshView) {Log.e("TAG", "onPullDownToRefresh");// 这里写下拉刷新的任务new GetDataTask().execute();}@Overridepublic void onPullUpToRefresh(PullToRefreshBase<ListView> refreshView) {Log.e("TAG", "onPullUpToRefresh");// 这里写上拉加载更多的任务new GetDataTask().execute();}});mPullRefreshListView.setRefreshing(true);}private void initDatas() {// 初始化数据和数据源data = new ArrayList<ComputerRoomStatus>();for (int i = 0; i < mItemCount; i++) {data.add(new ComputerRoomStatus(i, "1", "1", "3", "1", "1", "1"));}}protected void autoRefresh() {mPullRefreshListView.setRefreshing(true);}// 请求网络接口，这里是做的假数据private class GetDataTask extends AsyncTask<Void, Void, String> {@Overrideprotected String doInBackground(Void... params) {try {// TODO 解析jsonThread.sleep(1000);} catch (InterruptedException e) {}return "" + (mItemCount++);}@Overrideprotected void onPostExecute(String result) {// data.add(new// ComputerRoomStatus(1,result,result,result,result,result,result));data.add(new ComputerRoomStatus(Integer.parseInt(result), "", "","3", "1", "1", "1"));mAdapter.notifyDataSetChanged();mPullRefreshListView.onRefreshComplete();}}}

MyAdapter

package com.example.adapter;import java.util.List;import android.content.Context;import android.content.DialogInterface;import android.content.res.ColorStateList;import android.graphics.Color;import android.text.TextUtils;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.Button;import android.widget.TextView;import com.example.dao.ComputerRoomStatus;import com.example.dialog.CustomDialogOrder;import com.example.fragmentmytest.R;import com.example.utils.ToastUtils;import com.handmark.pulltorefresh.library.PullToRefreshListView;public class MyAdapter extends BaseAdapter {private Context context;private List<ComputerRoomStatus> data;private LayoutInflater layoutInflater;private String room;private ViewHolder holder = null;private PullToRefreshListView mPullRefreshListView;public MyAdapter(Context context, List<ComputerRoomStatus> data, String room,PullToRefreshListView mPullRefreshListView) {this.context = context;this.data = data;this.room = room;this.mPullRefreshListView = mPullRefreshListView;layoutInflater = LayoutInflater.from(context);}@Overridepublic int getCount() {return data.size();}@Overridepublic Object getItem(int position) {return data.get(position);}@Overridepublic long getItemId(int position) {return position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {if (convertView == null) {holder = new ViewHolder();convertView = layoutInflater.inflate(R.layout.lv_item, null);holder.seatId = (TextView) convertView.findViewById(R.id.seatId);holder.time1 = (Button) convertView.findViewById(R.id.time1);holder.time2 = (Button) convertView.findViewById(R.id.time2);holder.time3 = (Button) convertView.findViewById(R.id.time3);holder.time4 = (Button) convertView.findViewById(R.id.time4);holder.time5 = (Button) convertView.findViewById(R.id.time5);holder.time6 = (Button) convertView.findViewById(R.id.time6);convertView.setTag(holder);} else {holder = (ViewHolder) convertView.getTag();}// 获得集合中实体类对象final ComputerRoomStatus s = data.get(position);holder.seatId.setText(s.getId() + "");holder.time1.setOnClickListener(new lvButtonListener(position));holder.time2.setOnClickListener(new lvButtonListener(position));holder.time3.setOnClickListener(new lvButtonListener(position));holder.time4.setOnClickListener(new lvButtonListener(position));holder.time5.setOnClickListener(new lvButtonListener(position));holder.time6.setOnClickListener(new lvButtonListener(position));//略一部分不要紧的......return convertView;}class lvButtonListener implements View.OnClickListener {private int position;lvButtonListener(int pos) {position = pos;}@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.time1:showDialog(position, "1");break;case R.id.time2:showDialog(position, "2");break;case R.id.time3:showDialog(position, "3");break;case R.id.time4:showDialog(position, "4");break;case R.id.time5:showDialog(position, "5");break;case R.id.time6:showDialog(position, "6");break;default:break;}}}public void showDialog(final int id, final String witch) {final CustomDialogOrder.Builder builder = new CustomDialogOrder.Builder(context);builder.setTitle("预约上机");builder.setPositiveButton("预约", new DialogInterface.OnClickListener() {public void onClick(DialogInterface dialog, int which) {dialog.dismiss();// 提交的时候提交application的room和position和witchToastUtils.MyToast(context, room + ":" + id + ":" + witch);//TODO 拼接字符串 GET到指定的接口//TODO 并且刷新执行下拉刷新mPullRefreshListView.setRefreshing(true);}});builder.setNegativeButton("取消",new android.content.DialogInterface.OnClickListener() {public void onClick(DialogInterface dialog, int which) {dialog.dismiss();}});builder.create().show();}}class ViewHolder {TextView seatId;Button time1, time2, time3, time4, time5, time6;}

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