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我無法從（http://www.football-data.org）下載足球數據。我試圖通過爲每個團隊創建一個新的Standing對象並將它們添加到ArrayList來下載英格蘭超級聯賽表格。足球數據API JSON解析錯誤
我已經設置了我的解析器類，適配器類和我的視圖。
我得到的錯誤是：
org.json.JSONException: org.json.JSONException: Value {"_links":{"self":{"href":"http:\/\/api.football-data.org\/v1\/soccerseasons\/426\/leagueTable\/?matchday=37"},"soccerseason":{"href":"http:\/\/api.football-data.org\/v1\/soccerseasons\/426"}},"leagueCaption":"Premier League 2016\/17","matchday":37,"standing":[{"_links":{"team":{"href":"http:\/\/api.football-data.org\/v1\/teams\/61"}},"position":1,"teamName":"Chelsea FC","crestURI":"http:\/\/upload.wikimedia.org\/wikipedia\/de\/5\/5c\/Chelsea_crest.svg","playedGames":36,"points":87,"goals":76,"goalsAgainst":29,"goalDifference":47,"wins":28,"draws":3,"losses":5,"home":{"goals":46,"goalsAgainst":13,"wins":15,"draws":0,"losses":2},"away":{"goals":30,"goalsAgainst":16,"wins":13,"draws":3,"losses":3}},{"_links":{"team":{"href":"http:\/\/api.football-data.org\/v1\/teams\/73"}},"position":2,"teamName":"Tottenham Hotspur FC","crestURI":"http:\/\/upload.wikimedia.org\/wikipedia\/de\/b\/b4\/Tottenham_Hotspur.svg","playedGames":35,"points":77,"goals":71,"goalsAgainst":23,"goalDifference":48,"wins":23,"draws":8,"losses":4,"home":{"goals":45,"goalsAgainst":8,"wins":16,"draws":2,"losses":0},"away":{"goals":26,"goalsAgainst":15,"wins":7,"draws":6,"losses":4}},{"_links":{"team":{"href":"http:\/\/api.football-data.org\/v1\/teams\/65"}},"position":3,"teamName":"Manchester City FC","crestURI":"https:\/\/upload.wikimedia.org\/wikipedia\/en\/e\/eb\/Manchester_City_FC_badge.svg","playedGames":36,"points":72,"goals":72,"goalsAgainst":38,"goalDifference":34,"wins":21,"draws":9,"losses":6,"home":{"goals":34,"goalsAgainst":16,"wins":10,"draws":7,"losses":1},"away":{"goals":38,"goalsAgainst":22,"wins":11,"draws":2,"losses":5}},{"_links":{"team":{"href":"http:\/\/api.football-data.org\/v1\/teams\/64"}},"position":4,"teamName":"Liverpool FC","crestURI":"http:\/\/upload.wikimedia.org\/wikipedia\/de\/0\/0a\/FC_Liverpool.svg","playedGames":36,"points":70,"goals":71,"goalsAgainst":42,"goalDifference":29,"wins":20,"draws":10,"losses":6,"home":{"goals":42,"goalsAgainst":18,"wins":11,"draws":5,"losses":2},"away":{"goals":29,"goalsAgainst":24,"wins":9,"draws":5,"losses":4}},{"_links":{"team":{"href":"http:\/\/api.football-data.org\/v1\/teams\/57"}},"position":5,"teamName":"Arsenal FC","crestURI":"http:\/\/upload.wikimedia.org\/wikipedia\/en\/5\/53\/Arsenal_FC.svg","playedGames":35,"points":66,"goals":68,"goalsAgainst":42,"goalDifference":26,"wins":20,"draws":6,"losses":9,"home":{"goals":34,"goalsAgainst":15,"wins":12,"draws":3,"losses":2},"away":{"goals":34,"goalsAgainst":27,"wins":8,"draws":3,"losses":7}},{"_links":{"team":{"href":"http:\/\/api.football-data.org\/v1\/teams\/66"}},"position":6,"teamName":"Manchester United FC","crestURI":"http:\/\/upload.wikimedia.org\/wikipedia\/de\/d\/da\/Manchester_United_FC.svg","playedGames":35,"points":65,"goals":51,"goalsAgainst":27,"goalDifference":24,"wins":17,"draws":14,"losses":4,"home":{"goals":24,"goalsAgainst":12,"wins":7,"draws":10,"losses":1},"away":{"goals":27,"goalsAgainst":15,"wins":10,"draws":4,"losses":3}},{"_links":{"team":{"href":"http:\/\/api.football-data.org\/v1\/teams\/62"}},"position":7,"teamName":"Everton FC","crestURI":"http:\/\/upload.wikimedia.org\/wikipedia\/de\/f\/f9\/Everton_FC.svg","playedGames":37,"points":61,"goals":61,"goalsAgainst":41,"goalDifference":20,"wins":17,"draws":10,"losses":10,"home":{"goals":42,"goalsAgainst":16,"wins":13,"draws":4,"losses":2},"away":{"goals":19,"goalsAgainst":25,"wins":4,"draws":6,"losses":8}},{"_links":{"team":{"href":"http:\/\/api.football-data.org\/v1\/teams\/74"}},"position":8,"teamName":"West Bromwich Albion FC","crestURI":"http:\/\/upload.wikimedia.org\/wikipedia\/de\/8\/8b\/West_Bromwich_Albion.svg","playedGames":36,"points":45,"goals":41,"goalsAgainst":46,"goalDifference":-5,"wins":12,"draws":9,"losses":15,"home":{"goals":27,"goalsAgainst":22,"wins":9,"draws":2,"losses":8},"away":{"goals":14,"goalsAgainst":24,"wins":3,"draws":7,"losses":7}},{"_links":{"team":{"href":"http:\/\/api.football-data.org\/v1\/teams\/1044"}},"position":9,"teamName":"AFC Bournemouth","crestURI":"https:\/
05-13 15:39:24.798 6021-6540/com.example.oisin.premierleaguesocial W/System.err: at org.json.JSON.typeMismatch(JSON.java:111)
05-13 15:39:24.798 6021-6540/com.example.oisin.premierleaguesocial W/System.err: at org.json.JSONArray.<init>(JSONArray.java:96)
05-13 15:39:24.798 6021-6540/com.example.oisin.premierleaguesocial W/System.err: at org.json.JSONArray.<init>(JSONArray.java:108)
05-13 15:39:24.798 6021-6540/com.example.oisin.premierleaguesocial W/System.err: at com.example.oisin.premierleaguesocial.Utilities.JSONParser.parse(JSONParser.java:75)
05-13 15:39:24.799 6021-6540/com.example.oisin.premierleaguesocial W/System.err: at com.example.oisin.premierleaguesocial.Utilities.JSONParser.doInBackground(JSONParser.java:56)
05-13 15:39:24.799 6021-6540/com.example.oisin.premierleaguesocial W/System.err: at com.example.oisin.premierleaguesocial.Utilities.JSONParser.doInBackground(JSONParser.java:27)
我一直在試圖解決這個問題了幾個小時，但不能修復它。我想我已經正確設置了我的數據類型。爲了簡單起見，我決定首先嚐試獲取Integer數據類型。
任何幫助將非常感激。謝謝。
public class JSONParser extends AsyncTask<Void, Void, Boolean> {
private Context c;
private String jsonData;
private RecyclerView rv;
private ProgressDialog pd;
private ArrayList<Standing> mLeagueTable = new ArrayList<>();
public JSONParser(Context c, String jsonData, RecyclerView rv) {
this.c = c;
this.jsonData = jsonData;
this.rv = rv;
}
@Override
protected void onPreExecute() {
super.onPreExecute();
pd = new ProgressDialog(c);
pd.setTitle("Parse");
pd.setMessage("Parsing..Please Wait");
pd.show();
}
@Override
protected Boolean doInBackground (Void...params){
return parse();
}
@Override
protected void onPostExecute (Boolean isParsed){
super.onPostExecute(isParsed);
pd.dismiss(); //Dismiss progress dialog.
if (isParsed) {
//BIND
rv.setAdapter(new TableAdapter(c, mLeagueTable)); //Pass in instance of adapter.
} else {
Toast.makeText(c, "Unable to Parse check your Log Output", Toast.LENGTH_SHORT).show();
}
}
private Boolean parse() {
try {
//JSONArray ja = new JSONArray(jsonData);
JSONArray ja = new JSONArray("standing");
JSONObject jo; //declare json OBJECT
mLeagueTable.clear(); //Clears the ArrayList.
Standing table; //Declare a table
for (int i = 0; i < ja.length(); i++) //iterating in JSONArray
{
jo = ja.getJSONObject(i);
int position = ja.getInt(Integer.parseInt("position"));
int points = ja.getInt(Integer.parseInt("points"));
int playedGames = ja.getInt(Integer.parseInt("playedGames"));
int goals = ja.getInt(Integer.parseInt("goals"));
int goalsAgainst = ja.getInt(Integer.parseInt("goalsAgainst"));
int goalDifference = ja.getInt(Integer.parseInt("goalDifference"));
table = new Standing(); //Create a new "User" object.
table.setPosition(position);
table.setPoints(points);
table.setPlayedGames(playedGames);
table.setGoals(goals);
table.setGoalsAgainst(goalsAgainst);
table.setGoalDifference(goalDifference);
mLeagueTable.add(table); //Add new Standing object to ArrayList mLeagueTable.
}
return true;
} catch (JSONException e) {
e.printStackTrace();
return false;
}
}
}
public class JSONDownloader extends AsyncTask<Void, Void, String> {
Context c;
String jsonURL;
RecyclerView rv;
ProgressDialog pd;
public JSONDownloader(Context c, String jsonURL, RecyclerView rv) {
this.c = c;
this.jsonURL = jsonURL;
this.rv = rv;
}
@Override
protected void onPreExecute() { //CALLED just before data is downloaded.
super.onPreExecute();
pd = new ProgressDialog(c);
pd.setTitle("Download JSON");
pd.setMessage("Downloading.... Please Wait!");
pd.show();
}
@Override
protected String doInBackground(Void... voids) {
return download();
}
@Override
protected void onPostExecute(String jsonData) {
super.onPostExecute(jsonData);
pd.dismiss();
if (jsonData.startsWith("Error"))
{
String error = jsonData;
Toast.makeText(c, error, Toast.LENGTH_SHORT).show();
} else {
//PARSER
new JSONParser(c, jsonData, rv).execute();
}
}
private String download() {
Object connection = Connector.connect(jsonURL);
if (connection.toString().startsWith("Error")) {
return connection.toString();
}
try {
HttpURLConnection con = (HttpURLConnection) connection; //Cast connection to HTTPConnection
if (con.getResponseCode() == con.HTTP_OK) {
//GET INPUT FROM STREAM
InputStream is = new BufferedInputStream(con.getInputStream());
BufferedReader br = new BufferedReader(new InputStreamReader(is));
String line;
StringBuffer jsonData = new StringBuffer();
// READ
while ((line = br.readLine()) != null) {
jsonData.append(line + "\n");
}
//CLOSE RESOURCES
br.close();
is.close();
//RETURN JSON
return jsonData.toString();
} else {
return "Error " + con.getResponseMessage();
}
} catch (IOException e) {
e.printStackTrace();
return "Error " + e.getMessage();
}
}
}
public class MainActivity extends AppCompatActivity {
String jsonURL = "http://api.football-data.org/v1/soccerseasons/426/leagueTable";
public static final String TAG = "MainActivity";
//FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
private RecyclerView rv;
/*private ArrayList<Standing> mLeagueTable = new ArrayList<>(); //Initalise m
private TableAdapter mTableAdapter = new TableAdapter(mLeagueTable, this); */
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_table);
//Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
//setSupportActionBar(toolbar);
rv = (RecyclerView) findViewById(R.id.rv);
if (rv != null) {
rv.setLayoutManager(new LinearLayoutManager(this));
}
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab); //Initialze FAB
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
new JSONDownloader(MainActivity.this, jsonURL, rv).execute();
}
});
}
}
public class TableAdapter extends RecyclerView.Adapter<MyViewHolder>{
private ArrayList<Standing> mLeagueTable;
private Context c;
public TableAdapter(Context c, ArrayList<Standing> mLeagueTable) {
this.c = c;
this.mLeagueTable = mLeagueTable;
} //Constructor
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.tableitem, parent, false); //Inlfate the League Table model view.
return new MyViewHolder(itemView);
}
@Override
public void onBindViewHolder(MyViewHolder holder, int position) { //BINDS THE data to the appropriote View
Standing s = mLeagueTable.get(position);
final int teamPosition = s.getPosition();
final String teamName = s.getTeamName();
final int playedGames = s.getPlayedGames();
final int goals = s.getGoals();
final int goalsAgainst = s.getGoalsAgainst();
final int goalDifference = s.getGoalDifference();
final int points = s.getPoints();
//holder.teamNameTxt.setText(teamName);
holder.teamPositionTxt.setText(teamPosition);
holder.playedGamesTxt.setText(playedGames);
//holder.teamImage.setImageResource(s.getTeamImage());
holder.goalsTxt.setText(goals);
holder.goalsAgainstTxt.setText(goalsAgainst);
holder.goalDifferenceTxt.setText(goalDifference);
holder.pointsTxt.setText(points);
// holder.wins.setText(s.getWins());
//holder.draws.setText(s.getDraws());
//holder.losses.setText(s.getLosses());
holder.setItemClickListener(new ItemClickListener() {
@Override
public void onItemClick(int pos) {
openActivity(teamPosition, playedGames, goals, goalsAgainst, goalDifference, points);
}
});
}
@Override
public int getItemCount() {return mLeagueTable.size();}
////open Activity
private void openActivity(int...details)
{
Intent i = new Intent(c, TableActivity.class);
i.putExtra("POSITION_KEY", details[0]);
//i.putExtra("TEAMNAME_KEY", details[1]);
i.putExtra("POINTS_KEY", details[2]);
i.putExtra("PLAYEDGAMES_KEY", details[3]);
i.putExtra("GOALS_KEY", details[4]);
i.putExtra("GOALSAGAINST_KEY", details[5]);
i.putExtra("GOALDIFFERENCE_KEY", details[6]);
c.startActivity(i);
}
}
tableitem.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal" android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="@+id/teamPositionTxt"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:textColor="@color/primary_text" />
<TextView
android:id="@+id/teamNameTxt"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="3"
android:textColor="@color/primary_text" />
<TextView
android:id="@+id/pointsTxt"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:textColor="@color/primary_text"
android:textStyle="bold" />
<TextView
android:id="@+id/playedGamesTxt"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:textColor="@color/primary_text" />
<TextView
android:id="@+id/goalsTxt"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:textColor="@color/primary_text" />
<TextView
android:id="@+id/goalsAgainstTxt"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:textColor="@color/primary_text" />
<TextView
android:id="@+id/goalDifferenceTxt"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:textColor="@color/primary_text" />
</LinearLayout>
是該代碼是正確的。謝謝！ – Oisin834