我想从我的localserver xammp中的JSON文件加载更新的数据。 我已经完成了从json文件中获取数据
这是我的fragment_one.xml
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:focusableInTouchMode="true"
android:orientation="vertical">
<ListView
android:id="@+id/listview"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:divider="@null">
</ListView>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="50dp"
android:orientation="horizontal">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="50dp"
android:orientation="horizontal"
android:layout_weight="1"
android:layout_marginLeft="5dp">
<TextView
android:id="@+id/txtbExtras"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:textColor="#000000"
android:textSize="12dp"
android:text="Extras:"/>
<TextView
android:id="@+id/txtbWide"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:textColor="#000000"
android:textSize="12dp"
android:text="W-,"/>
<TextView
android:id="@+id/txtbNb"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:textColor="#000000"
android:textSize="12dp"
android:text="Nb-,"/>
<TextView
android:id="@+id/txtbBye"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:textSize="12dp"
android:textColor="#000000"
android:text="B-,"/>
<TextView
android:id="@+id/txtbLegBye"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:textSize="12dp"
android:textColor="#000000"
android:text="Lb-,"/>
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="50dp"
android:layout_weight="2"
android:layout_marginRight="5dp"
android:orientation="vertical">
<TextView
android:id="@+id/txtbTotal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:textSize="13dp"
android:textColor="#000000"
android:text="Total:"/>
<TextView
android:id="@+id/txtbRR"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:textSize="13dp"
android:textColor="#000000"
android:text="RR:"/>
</LinearLayout>
</LinearLayout>
<View
android:layout_width="fill_parent"
android:layout_height="2dp"
android:background="#80CBC4"></View>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="45dp"
android:layout_marginLeft="5dp"
android:orientation="horizontal">
<TextView
android:id="@+id/txtyetBat"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textColor="#000000"
android:textSize="12dp"
android:text="What is you rname"/>
</LinearLayout>
<ListView
android:id="@+id/listBowling"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:divider="@null">
</ListView>
<ListView
android:id="@+id/listFallofWickets"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:divider="@null">
</ListView>
</LinearLayout>
</ScrollView>
这是我的OneFragment.java，它在布局上面膨胀并设置我的适配器类的值。
package com.domore.tabfinaldemo;
import android.app.ProgressDialog;
import android.graphics.Typeface;
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.ListView;
import android.widget.TextView;
import android.widget.Toast;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import Adapter.FirstBowlingAdapter;
import Adapter.FullScoreAdapter;
import Adapter.WicketAdapter;
public class OneFragment extends Fragment {
View rootView;
ListView lst,lstBowling,lstWicket;
FullScoreAdapter adapter=null;
FirstBowlingAdapter adapter_bowlilng=null;
WicketAdapter wicketAdapter=null;
ArrayList<String> p_name=null;
ArrayList<JSONObject> p_key=null;
ArrayList<JSONObject> bowling_object=null;
ArrayList<String> lstbowling=null;
ArrayList<String> fall_wicket=null;
ArrayList<String> player_key1=null;
ArrayList<String> symmentric=null;
ArrayList<String> union=null;
ArrayList<String> intersection=null;
ArrayList<String> p_name11=null;
ArrayList<String> playing_11=null;
View batting_header,bowling_header,wicket_header;
TextView txtBattingtotal;
String bat_order="";
String[] parts;
String[] score;
Typeface tf;
String jsonStr="";
String target="";
String wicket="";
String[] inn_value;
String topScore="";
String inning_name="";
String team_name="";
String yetBat="";
String strextras="",strwide="",strnb="",strbye="",strlb="",strtotal="",strRR="";
JSONArray team_value;
JSONObject teamobject;
TextView txtextras;
TextView txtwide;
TextView txtNb;
TextView txtBye;
TextView txtLb;
TextView txtTotal;
TextView txtRR;
TextView txtyetBat;
private static final String url="http://10.0.2.2/JSON/fullList.php";
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
ScoreCard scoreCard=(ScoreCard)getActivity();
bat_order=scoreCard.setInnings();
topScore=scoreCard.setInningScore();
rootView = inflater.inflate(R.layout.fragment_one, container, false);
new JSONLoader().execute();
txtextras=(TextView)rootView.findViewById(R.id.txtbExtras);
txtwide=(TextView)rootView.findViewById(R.id.txtbWide);
txtNb=(TextView)rootView.findViewById(R.id.txtbNb);
txtBye=(TextView)rootView.findViewById(R.id.txtbBye);
txtLb=(TextView)rootView.findViewById(R.id.txtbLegBye);
txtTotal=(TextView)rootView.findViewById(R.id.txtbTotal);
txtRR=(TextView)rootView.findViewById(R.id.txtbRR);
txtyetBat=(TextView)rootView.findViewById(R.id.txtyetBat);
tf=Typeface.createFromAsset(getActivity().getAssets(), "Roboto-Medium.ttf");
lst=(ListView)rootView.findViewById(R.id.listview);
batting_header=inflater.inflate(R.layout.batting_header, lst, false);
txtBattingtotal=(TextView)batting_header.findViewById(R.id.txtBattingtotal);
txtBattingtotal.setTypeface(tf);
lstBowling=(ListView)rootView.findViewById(R.id.listBowling);
bowling_header=inflater.inflate(R.layout.bowling_header,lstBowling,false);
lstWicket=(ListView)rootView.findViewById(R.id.listFallofWickets);
wicket_header=inflater.inflate(R.layout.wicket_header,lstWicket,false);
return rootView;
}
public class JSONLoader extends AsyncTask<String, String, String> {
private ProgressDialog dialog;
@Override
protected void onPreExecute() {
super.onPreExecute();
// dialog = new ProgressDialog(getActivity());
// dialog.setMessage("Getting....");
// dialog.setIndeterminate(false);
// dialog.setCancelable(true);
// dialog.show();
}
@Override
protected String doInBackground(String... params) {
ServiceHandler sh = new ServiceHandler();
jsonStr = sh.makeServiceCall(url, ServiceHandler.POST);
if (jsonStr != null) {
try {
JSONObject mainObject = new JSONObject(jsonStr);
JSONObject dataObject = mainObject.getJSONObject("data");
JSONObject cardObject = dataObject.getJSONObject("card");
parts = bat_order.split("`");
JSONObject b_1 = new JSONObject(parts[0]);
//Get innings extras
strextras=b_1.getString("extras");
strwide=b_1.getString("wide");
strnb=b_1.getString("noball");
strbye=b_1.getString("bye");
strlb=b_1.getString("legbye");
strtotal=b_1.getString("runs");
strRR=b_1.getString("run_rate");
//Get innings extras completed
JSONArray batting_order = b_1.getJSONArray("batting_order");
p_name = new ArrayList<String>();
for (int i = 0; i < batting_order.length(); i++) {
p_name.add(batting_order.getString(i));
}
target = b_1.getString("runs");
wicket = b_1.getString("wickets");
JSONObject teams = cardObject.getJSONObject("teams");
score=topScore.split(",");
inning_name=score[0];
inn_value=inning_name.split("_");
team_value = teams.names();
for(int i=0;i<team_value.length();i++){
if(team_value.getString(i).equals(inn_value[0])){
teamobject=teams.getJSONObject(team_value.optString(i));
}
}
team_name=teamobject.getString("short_name");
JSONObject matchobject=teamobject.getJSONObject("match");
JSONArray playing_Xi=matchobject.getJSONArray("playing_xi");
playing_11=new ArrayList<>();
p_name11=new ArrayList<>();
p_name11.addAll(p_name);
for(int i=0;i<playing_Xi.length();i++){
playing_11.add(playing_Xi.getString(i));
}
union=new ArrayList<>(p_name11);
union.addAll(playing_11);
intersection=new ArrayList<>(p_name11);
intersection.retainAll(playing_11);
symmentric=new ArrayList<>(union);
symmentric.removeAll(intersection);
JSONObject players = cardObject.getJSONObject("players");
JSONArray player_arr = players.names();
JSONObject player_data = null;
ArrayList<String> player_key = new ArrayList<>();
for (int i = 0; i < player_arr.length(); i++) {
player_key.add(player_arr.getString(i));
}
p_key = new ArrayList<JSONObject>();
for (int i = 0; i < batting_order.length(); i++) {
for (int j = 0; j < player_arr.length(); j++) {
if (batting_order.getString(i).equals(player_arr.getString(j))) {
p_key.add(players.getJSONObject(player_arr.optString(j)));
}
}
}
//BOWLLING PART START
JSONArray bowling_arr = b_1.getJSONArray("bowling_order");
lstbowling = new ArrayList<String>();
for (int i = 0; i < bowling_arr.length(); i++) {
lstbowling.add(bowling_arr.getString(i));
}
JSONObject players1 = cardObject.getJSONObject("players");
JSONArray player_arr1 = players1.names();
player_key1 = new ArrayList<String>();
for (int i = 0; i < player_arr1.length(); i++) {
player_key1.add(player_arr1.getString(i));
}
bowling_object = new ArrayList<JSONObject>();
for (int i = 0; i < bowling_arr.length(); i++) {
for (int j = 0; j < player_arr.length(); j++) {
if (bowling_arr.getString(i).equals(player_arr1.getString(j))) {
bowling_object.add(players1.getJSONObject(player_arr1.optString(j)));
}
}
}
fall_wicket = new ArrayList<String>();
JSONArray fall_wicket_data = b_1.getJSONArray("fall_of_wickets");
for (int i = 0; i < fall_wicket_data.length(); i++) {
fall_wicket.add(fall_wicket_data.getString(i));
}
} catch (JSONException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
else{
Toast.makeText(getContext(), "There is no Data!!", Toast.LENGTH_SHORT).show();
}
return null;
}
@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
// if (dialog.isShowing())
// dialog.dismiss();
txtyetBat.setText("Yet to bat:"+symmentric);
txtBattingtotal.setText(team_name + "-" + target + "/" + wicket);
txtextras.setText("Extras("+strextras+"):");
txtwide.setText("W-"+strwide+",");
txtNb.setText("Nb-"+strnb+",");
txtBye.setText("B-"+strbye+",");
txtLb.setText("Lb-"+strlb+",");
txtTotal.setText("Total:"+strtotal+"/"+wicket);
txtRR.setText("RR-"+strRR);
lst.addHeaderView(batting_header, null, false);
adapter=new FullScoreAdapter(getContext(),p_name,p_key);
lst.setAdapter(adapter);
Helper.getListViewSize(lst);
lstBowling.addHeaderView(bowling_header, null, false);
adapter_bowlilng=new FirstBowlingAdapter(getContext(),lstbowling,bowling_object);
lstBowling.setAdapter(adapter_bowlilng);
Helper.getListViewSize(lstBowling);
lstWicket.addHeaderView(wicket_header, null, false);
wicketAdapter=new WicketAdapter(getContext(),fall_wicket);
lstWicket.setAdapter(wicketAdapter);
Helper.getListViewSize(lstWicket);
}
}
}
请帮我解决，以便我可以获得更新的数据特定时间间隔。
答案 0 :(得分：0)
您可以使用广播接收器ACTION_TIME_TICK。这将每分钟执行一次。
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
hourText=(TextView)findViewById(R.id.hourText);
minuteText=(TextView)findViewById(R.id.minuteText);
//Create a broadcast receiver that will fire every minute
tickReceiver=new BroadcastReceiver(){
@Override
public void onReceive(Context context, Intent intent) {
if(intent.getAction().compareTo(Intent.ACTION_TIME_TICK)==0)
{
//you can call webservice here to retrive new data
}
}
};
//Register the broadcast receiver to receive TIME_TICK
registerReceiver(tickReceiver, new IntentFilter(Intent.ACTION_TIME_TICK));
}
@Override
public void onStop()
{
super.onStop();
//unregister broadcast receiver.
if(tickReceiver!=null)
unregisterReceiver(tickReceiver);
}
注意：请记得调用方法“unregisterReceiver”，否则你的应用程序会抛出这样的异常： -
“Activity has leaked IntentReceiver that was originally registered here. Are you missing a call to unregisterReceiver()?”
在onPostExecute方法中记下以下代码以检查adaper是否为null。如果为null，则只需要创建一个新实例。否则，您只需提供一个新数据集并调用notifyDataSetChanged（）进行更新用户界面。
if(youradapter == null)
{
youradapter = new CustomAdapter(this, yourList);
listview.setAdapter(youradapter);
}else{
youradapter.setListArray(yourList); //<- provide a new data every minute here
youradapter.notifyDataSetChanged();//<- this will update your UI with new data
}
警告：每分钟都会耗尽电池电量。建议实施拉动刷新机制。 您可以在此处了解详情：http://androidsrc.net/android-pull-refresh-view-using-swiperefreshlayout/