我正在尝试使用SimpleCursorAdapter从SQLiteDatabase填充ListView。没有错误，我知道数据库中有数据，但ListView上没有任何内容。
任何人都可以帮忙找出问题所在吗？
1）ListView的布局（activity_profilelist.xml）
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_profilelist"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation= "vertical"
android:paddingBottom="0dp"
android:paddingLeft="0dp"
android:paddingRight="0dp"
android:paddingTop="0dp"
tools:context="com.corvus.corvusenterprises.digimonapp.Profilelist">
<TextView
android:id="@+id/textView_names"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.1"
android:gravity="center"
android:textAppearance="@android:style/TextAppearance.Theme"
android:textSize="25sp"
android:text="Digimon"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:orientation= "horizontal">
<ListView
android:id="@+id/ListView_names"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="100" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="30dp"
android:layout_weight="0.1">
<Button
android:id="@+id/button_update"
android:layout_width="0dp"
android:layout_height="50dp"
android:layout_weight="1"
android:text="Update List">
</Button>
</LinearLayout>
</LinearLayout>
2）ListView（activity_list_example.xml）中各个条目的布局
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<TextView
android:id="@+id/Digimon_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="28sp" />
<TextView
android:id="@+id/Digimon_favourites"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="28sp" />
</LinearLayout>
3）ListView（ProfileList.java）的Java
package com.corvus.corvusenterprises.digimonapp;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
import static com.corvus.corvusenterprises.digimonapp.R.id.button_update;
public class Profilelist extends Digimon2 {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_profilelist);
DBHelper dbHelper = DBHelper.getInstance(MyApp.getContext());
Cursor cursor = dbHelper.defaultMainMenu();
String[]columns = new String[] {"name","favourite","path"};
ListView theListView = (ListView) findViewById(R.id.listView_names);
int[]to = new int[] {R.id.Digimon_name,R.id.Digimon_favourites};
SimpleCursorAdapter adapter = new SimpleCursorAdapter(this,R.layout.activity_list_example,cursor,columns,to,0);
theListView.setAdapter(adapter);
}
}
4）数据库助手的Java（DBHelper.java）
package com.corvus.corvusenterprises.digimonapp;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.database.sqlite.SQLiteOpenHelper;
import android.content.Context;
import android.content.ContentValues;
import android.os.AsyncTask;
import android.os.Environment;
import android.util.Log;
import org.jsoup.Jsoup;
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import static android.graphics.Bitmap.Config.ARGB_8888;
import static android.graphics.Bitmap.createBitmap;
/**
* Created by Jack on 28-Mar-17.
*/
public class DBHelper extends SQLiteOpenHelper {
private static final int version = 1;
private static final String DATABASE_NAME = "DigimonDatabase.db";
private static final String DIGIMON_TABLE_NAME = "Digimon";
private static final String DIGIMON_COLUMN_NAME = "name";
private static final String DIGIMON_COLUMN_DUB_NAME = "dub_name";
private static final String DIGIMON_COLUMN_LEVEL = "level";
private static final String DIGIMON_COLUMN_ATTRIBUTE = "attribute";
private static final String DIGIMON_COLUMN_DESCRIPTION = "description";
private static final String DIGIMON_COLUMN_FAVOURITE = "favourite";
private static final String EVOLUTIONS_TABLE_NAME = "Evolutions";
private static final String EVOLUTIONS_COLUMN_FROM = "\"from\"";
private static final String EVOLUTIONS_COLUMN_TO = "\"to\"";
private static final String EVOLUTIONS_COLUMN_CONDITIONS = "conditions";
private static final String ATTACKS_TABLE_NAME = "Attacks";
private static final String ATTACKS_COLUMN_NAME = "name";
private static final String ATTACKS_COLUMN_DUB_NAME = "dub_name";
private static final String ATTACKS_COLUMN_DIGIMON = "digimon";
private static final String ATTACKS_COLUMN_DESCRIPTION = "description";
private static final String PICTURES_TABLE_NAME = "Pictures";
private static final String PICTURES_COLUMN_DIGIMON = "digimon";
private static final String PICTURES_COLUMN_PATH = "path";
private static String[]digimonArray = {/*19MB worth of Digimon names removed for length constraints.*/};
private static boolean[]presentDigimon = new boolean[digimonArray.length];
private static DBHelper instance;
private DBHelper(Context context)
{
super(context, DATABASE_NAME, null, version);
}
public static DBHelper getInstance(Context ctx)
{
if(instance == null)
instance = new DBHelper(ctx);
return instance;
}
@Override
public void onCreate(SQLiteDatabase db)
{
//Create and define the tables
db.execSQL("CREATE TABLE "+DIGIMON_TABLE_NAME+" ("+DIGIMON_COLUMN_NAME+" TEXT PRIMARY KEY, "+DIGIMON_COLUMN_DUB_NAME+" TEXT NULL, "+DIGIMON_COLUMN_LEVEL+" TEXT NULL, "+DIGIMON_COLUMN_ATTRIBUTE+" TEXT NULL, "+DIGIMON_COLUMN_DESCRIPTION+" TEXT NULL, "+DIGIMON_COLUMN_FAVOURITE+" TEXT DEFAULT 'FALSE')");
db.execSQL("CREATE TABLE "+EVOLUTIONS_TABLE_NAME+" ("+EVOLUTIONS_COLUMN_FROM+" TEXT, "+EVOLUTIONS_COLUMN_TO+" TEXT, "+EVOLUTIONS_COLUMN_CONDITIONS+" TEXT NULL, primary key("+EVOLUTIONS_COLUMN_FROM+", "+EVOLUTIONS_COLUMN_TO+"))");
db.execSQL("CREATE TABLE "+ATTACKS_TABLE_NAME+" ("+ATTACKS_COLUMN_NAME+" TEXT, "+ATTACKS_COLUMN_DUB_NAME+" TEXT NULL, "+ATTACKS_COLUMN_DIGIMON+" TEXT, "+ATTACKS_COLUMN_DESCRIPTION+" TEXT NULL, primary key("+ATTACKS_COLUMN_NAME+", "+ATTACKS_COLUMN_DIGIMON+"))");
db.execSQL("CREATE TABLE "+PICTURES_TABLE_NAME+" ("+PICTURES_COLUMN_DIGIMON+" TEXT PRIMARY KEY, "+PICTURES_COLUMN_PATH+" TEXT)");
//Fill in some default Digimon
insertDigimon("Guilmon", "Guilmon", "Child/Rookie", "Virus", "Dinosaur", "TRUE");
insertDigimon("Growmon", "Growlmon", "Adult/Champion", "Virus", "Bigger Dinosaur", "FALSE");
insertDigimon("Terriermon", "terriermon", "Child/Rookie", "Vaccine", "Dogbunny", "FALSE");
insertDigimon("Galgomon", "Gargomon", "Adult/Champion", "Vaccine", "Gunbunny", "FALSE");
insertDigimon("Kyubimon", "Kyubimon", "Adult/Champion", "Data", "9-Tailed Fox", "FALSE");
insertDigimon("Taomon", "Taomon", "Perfect/Ultimate", "Data", "Kitsune Miko", "FALSE");
insertDigimon("Impmon", "Impmon", "Child/Rookie", "Virus", "Kid in a purple onesie", "FALSE");
insertDigimon("Beelzebumon", "Beelzemon", "Ultimate/Mega", "Virus", "Demon Lord of Gluttony", "FALSE");
presentDigimon[460] = true; presentDigimon[454] = true;
presentDigimon[1019] = true; presentDigimon[374] = true;
presentDigimon[572] = true; presentDigimon[1013] = true;
presentDigimon[507] = true; presentDigimon[100] = true;
insertEvolution("Guilmon", "Growmon");
insertEvolution("Terriermon", "Galgomon");
insertEvolution("Kyubimon", "Taomon");
insertEvolution("Impmon", "Beelzebumon", "(Warp Evolution)");
insertAttack("Fireball", "Pyro Sphere", "Guilmon", "Explosive Fireball");
insertAttack("Rock Breaker", "Rock Breaker", "Guilmon", "Claw Swipe");
insertAttack("Exhaust Flame", "Pyro Blaster", "Growmon", "Fire Laser");
insertAttack("Plasma Blade", "Dragon Slash", "Growmon", "Forearm Blades");
insertAttack("Blazing Fire", "Bunny Blast", "Terriermon", "Energy Blast");
insertAttack("Petit Twister", "Terrier Tornado", "Terriermon", "Throws Tornado");
insertAttack("Gatling Arm", "Gargo Laser", "Galgomon", "Fires Guns");
insertAttack("Dum Dum Upper", "Bunny Pummel", "Galgomon", "Fires Guns While Punching");
insertAttack("Koenryu", "Dragon Wheel", "Kyubimon", "Fire Dragon");
insertAttack("Onibidama", "Fox-Tail Inferno", "Kyubimon", "Fireballs from the tails");
insertAttack("Bonhitsusen", "Talisman of Light", "Taomon", "Energy Seal Laser");
insertAttack("Oṃ", "Talisman Spell", "Taomon", "Makes a dome shield");
insertAttack("Night of Fire", "Badaboom", "Impmon", "Mini-Fireballs");
insertAttack("Pillar of Fire", "", "Impmon", "Wall of Flames");
insertAttack("Double Impact", "Double Impact", "Beelzebumon", "Fires two bullets");
insertAttack("Darkness Claw", "", "Beelzebumon", "Kills Leomon");
insertPicture("Guilmon","R.mipmap.guilmon.jpg");
insertPicture("Growmon","R.mipmap.growmon.jpg");
insertPicture("Terriermon","R.mipmap.terriermon.jpg");
insertPicture("Galgomon","R.mipmap.galgomon.jpg");
insertPicture("Kyubimon","R.mipmap.kyubimon.jpg");
insertPicture("Taomon","R.mipmap.taomon.jpg");
insertPicture("Impmon","R.mipmap.impmon.jpg");
insertPicture("Beelzebumon","R.mipmap.beelzebumon.jpg");
//Populate Tables
new Downloader().start();
}
private class Downloader extends Thread
{
public void run()
{
int digimonToGetAtOnce = 20;
HttpURLConnection connection;
URL url;
String wikimonAddress, downloadResult;
BufferedInputStream in;
for(int i=0;i<digimonToGetAtOnce;)
{
int rand = (int)(Math.random()*digimonArray.length);
if(!presentDigimon[rand])
{
wikimonAddress = "https://wikimon.net/api.php?action=parse&format=json&page=" + digimonArray[rand] + "&prop=text";
try {
url = new URL(wikimonAddress);
connection = (HttpURLConnection) url.openConnection();
in = new BufferedInputStream(connection.getInputStream());
downloadResult = readStream(in);
connection.disconnect();
i++;
presentDigimon[rand] = true;
sortInput(downloadResult);
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
private String readStream(InputStream is) throws IOException {
StringBuilder sb = new StringBuilder();
BufferedReader r = new BufferedReader(new InputStreamReader(is),1000);
for (String line = r.readLine(); line != null; line =r.readLine()){
sb.append(line);
}
is.close();
return sb.toString();
}
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldver, int newVer)
{
db.execSQL("DROP TABLE IF EXISTS "+DIGIMON_TABLE_NAME);
db.execSQL("DROP TABLE IF EXISTS "+ATTACKS_TABLE_NAME);
db.execSQL("DROP TABLE IF EXISTS "+EVOLUTIONS_TABLE_NAME);
db.execSQL("DROP TABLE IF EXISTS "+PICTURES_TABLE_NAME);
onCreate(db);
}
public void insertDigimon(String name, String dub_name, String level, String attribute, String description, String favourite)
{
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(DIGIMON_COLUMN_NAME,name);
values.put(DIGIMON_COLUMN_DUB_NAME,dub_name);
values.put(DIGIMON_COLUMN_LEVEL,level);
values.put(DIGIMON_COLUMN_ATTRIBUTE,attribute);
values.put(DIGIMON_COLUMN_DESCRIPTION,description);
values.put(DIGIMON_COLUMN_FAVOURITE, favourite);
db.insert(DIGIMON_TABLE_NAME, null, values);
db.close();
}
public void insertAttack(String name, String dub_name, String digimon, String description)
{
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(ATTACKS_COLUMN_NAME, name);
values.put(ATTACKS_COLUMN_DUB_NAME,dub_name);
values.put(ATTACKS_COLUMN_DIGIMON, digimon);
values.put(ATTACKS_COLUMN_DESCRIPTION, description);
db.insert(ATTACKS_TABLE_NAME, null, values);
db.close();
}
public void insertEvolution(String from, String to, String conditions)
{
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(EVOLUTIONS_COLUMN_TO,to);
values.put(EVOLUTIONS_COLUMN_FROM,from);
values.put(EVOLUTIONS_COLUMN_CONDITIONS,conditions);
db.insert(EVOLUTIONS_TABLE_NAME, null, values);
db.close();
}
public void insertEvolution(String from, String to)
{
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(EVOLUTIONS_COLUMN_TO,to);
values.put(EVOLUTIONS_COLUMN_FROM,from);
db.insert(EVOLUTIONS_TABLE_NAME, null, values);
db.close();
}
public void insertPicture(String digimon, String path)
{
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(PICTURES_COLUMN_DIGIMON,digimon);
values.put(PICTURES_COLUMN_PATH,path);
db.insert(PICTURES_TABLE_NAME, null, values);
db.close();
}
public Cursor defaultMainMenu()
{
SQLiteDatabase db = getWritableDatabase();
String query = "SELECT "+DIGIMON_TABLE_NAME+".ROWID AS _id, "+DIGIMON_COLUMN_NAME+", "+DIGIMON_COLUMN_FAVOURITE+" FROM "+DIGIMON_TABLE_NAME;
Cursor cursor = db.rawQuery(query,null);
int dummy = cursor.getCount();
db.close();
return cursor;
}
public Cursor searchMenuQuery(String search)
{
SQLiteDatabase db = this.getWritableDatabase();
String query = "SELECT ROWID AS _id, "+DIGIMON_COLUMN_NAME+", "+DIGIMON_COLUMN_FAVOURITE+", "+PICTURES_TABLE_NAME+"."+PICTURES_COLUMN_PATH+" FROM "+DIGIMON_TABLE_NAME+" JOIN "+PICTURES_TABLE_NAME+" ON "+PICTURES_TABLE_NAME+"."+PICTURES_COLUMN_DIGIMON+"="+DIGIMON_TABLE_NAME+"."+DIGIMON_COLUMN_NAME +" WHERE "+DIGIMON_COLUMN_NAME+" LIKE '%"+search+"%' UNION SELECT ROWID AS _id, "+DIGIMON_COLUMN_NAME+", "+DIGIMON_COLUMN_FAVOURITE+", "+PICTURES_TABLE_NAME+"."+PICTURES_COLUMN_DIGIMON+" FROM "+DIGIMON_TABLE_NAME+" JOIN "+PICTURES_TABLE_NAME+" ON "+PICTURES_TABLE_NAME+"."+PICTURES_COLUMN_DIGIMON+"="+DIGIMON_TABLE_NAME+"."+DIGIMON_COLUMN_NAME +" WHERE "+DIGIMON_COLUMN_DUB_NAME+" LIKE '%"+search+"%'";
Cursor cursor = db.rawQuery(query,null);
int dummy = cursor.getCount();
db.close();
return cursor;
}
public Cursor favouritesMenuQuery()
{
SQLiteDatabase db = this.getWritableDatabase();
String query = "SELECT ROWID AS _id, "+DIGIMON_COLUMN_NAME+", "+PICTURES_TABLE_NAME+"."+PICTURES_COLUMN_PATH+" FROM "+DIGIMON_TABLE_NAME+" JOIN "+PICTURES_TABLE_NAME+" ON "+PICTURES_TABLE_NAME+"."+PICTURES_COLUMN_DIGIMON+"="+DIGIMON_TABLE_NAME+"."+DIGIMON_COLUMN_NAME +" WHERE "+DIGIMON_COLUMN_FAVOURITE+" = 'TRUE'";
Cursor cursor = db.rawQuery(query,null);
int dummy = cursor.getCount();
db.close();
return cursor;
}
public Cursor digimonProfileQuery(String name)
{
SQLiteDatabase db = this.getWritableDatabase();
String query = "SELECT ROWID AS _id, * FROM "+DIGIMON_TABLE_NAME+" WHERE "+DIGIMON_COLUMN_NAME+" = '"+name+"'";
Cursor cursor = db.rawQuery(query, null);
int dummy = cursor.getCount();
db.close();
return cursor;
}
public Cursor digimonAttacksQuery(String name)
{
SQLiteDatabase db = this.getWritableDatabase();
String query = "SELECT ROWID AS _id, * FROM "+ATTACKS_TABLE_NAME+" WHERE "+ATTACKS_COLUMN_DIGIMON+" = '"+name+"'";
Cursor cursor = db.rawQuery(query, null);
int dummy = cursor.getCount();
db.close();
return cursor;
}
public Cursor digimonEvolutionFromQuery(String name)
{
SQLiteDatabase db = this.getWritableDatabase();
String query = "SELECT ROWID AS _id, * FROM "+EVOLUTIONS_TABLE_NAME+" WHERE "+EVOLUTIONS_COLUMN_FROM+" = '"+name+"'";
Cursor cursor = db.rawQuery(query, null);
int dummy = cursor.getCount();
db.close();
return cursor;
}
public Cursor digimonEvolutionToQuery(String name)
{
SQLiteDatabase db = this.getWritableDatabase();
String query = "SELECT ROWID AS _id, * FROM "+EVOLUTIONS_TABLE_NAME+" WHERE "+EVOLUTIONS_COLUMN_TO+" = '"+name+"'";
Cursor cursor = db.rawQuery(query, null);
int dummy = cursor.getCount();
db.close();
return cursor;
}
public Cursor digimonPictureQuery(String name)
{
SQLiteDatabase db = this.getWritableDatabase();
String query = "SELECT ROWID AS _id, "+PICTURES_COLUMN_PATH+" FROM "+PICTURES_TABLE_NAME+" WHERE "+PICTURES_COLUMN_DIGIMON+" = '"+name+"'";
Cursor cursor = db.rawQuery(query, null);
int dummy = cursor.getCount();
db.close();
return cursor;
}
public void sortInput(String input)
{
int index1, index2;
String name, dubName, level, attribute, description, imageUrl, imagePath;
String attackName="", attackDubName="", attackDescription="No description given.";
String from = "", to = "", conditions = "";
ArrayList<String[]> attacks = new ArrayList<String[]>();
ArrayList<String[]> evolvesFrom = new ArrayList<String[]>();
ArrayList<String[]> evolvesTo = new ArrayList<String[]>();
boolean tableEnded = false, rowEnded = false;
index2 = input.indexOf("\",\n\"pageid\":");
name = input.substring(20,index2);
index1 = input.indexOf("Japanese</b></span></span><br />")+32;
index2 = input.indexOf("\\n</td></tr>\\n<tr>\\n<td style=\\\"border-top:1px solid gray\\\" align=\\\"center\\\"><span class=\\\"plainlinks\\\">",index1);
description = input.substring(index1, index2);
description = Jsoup.parse(description).text();
if(input.contains("<b>Dub:</b>\\n</td>\\n<td>\\n</td>\\n<td>\\n</td>\\n<td valign=\\\"center\\\"><i>"))
{
index1 = input.indexOf("<b>Dub:</b>\\n</td>\\n<td>\\n</td>\\n<td>\\n</td>\\n<td valign=\\\"center\\\"><i>")+72;
index2 = input.indexOf("</i>",index1);
dubName = input.substring(index1,index2);
}
else dubName = name;
index1 = input.indexOf("Level</font></a></b>\\n</td>\\n<td style=\\\"background:#252525;width:175px;border-bottom:1px solid #808080\\\"><a href=\\\"/")+118;
index2 = input.indexOf("\\\" title=\\\"",index1);
level = input.substring(index1,index2);
index1 = input.indexOf("Attribute</font></a></b>\\n</td>\\n<td style=\\\"background:#252525;width:175px;border-bottom:1px solid #808080\\\"><a href=\\\"/Category:")+136;
index2 = input.indexOf("\\\" title=\\\"",index1);
attribute = input.substring(index1,index2);
index2 = input.indexOf("width=\\\"320\\\" height=\\\"320\\\"");
index1 = input.lastIndexOf("src=\\\"",index2);
imageUrl = "https://wikimon.net"+input.substring(index1,index2);
index1 = input.indexOf("<i><b>")+6;
index2 = input.indexOf("</b></i>",index1);
for(int i = 0;!tableEnded;i++)
{
//name, dub_name, digimon, description
attackName = input.substring(index1,index2);
index1 = input.indexOf("<i>",index2)+3;
index2 = input.indexOf("</i>",index1);
attackDubName = input.substring(index1,index2);
index1 = input.indexOf("</td>",index2);
index1 = input.indexOf("</td>",index1);
index1 = input.indexOf("</td>",index1);
index1 = input.indexOf("<i>",index1)+3;
index2 = input.indexOf("</i>",index1);
if(input.substring(index1,index2).compareTo("<br />")!=0)
attackDubName = input.substring(index1,index2);
else if(attackDubName.compareTo("<br />")==0)
attackDubName = attackName;
index1 = input.indexOf("<td style",index2);
index1 = input.indexOf("\\\">",index1)+3;
index2 = input.indexOf("\\n</td></tr>");
attackDescription = input.substring(index1,index2);
attacks.add(i,new String[]{attackName,attackDubName,name,attackDescription});
if(input.substring(index2,index2+64).contains("</table>"))
{
tableEnded = true;
}
}
tableEnded = false;
for(int i = 0;!tableEnded;i++)
{
index1 = input.indexOf("<li>",index2);
index1 = input.indexOf("\\\"/",index1)+3;
index2 = input.indexOf("\\\" title",index1);
from = input.substring(index1,index2);
index1 = input.indexOf("</a>",index2);
index2 = input.indexOf("</li>",index1);
if(Jsoup.parse(input.substring(index1,index2)).text().contains("("))
{
conditions = Jsoup.parse(input.substring(index1,index2)).text();
evolvesFrom.add(new String[]{from,name,conditions});
}
else evolvesFrom.add(new String[]{from,name});
if(input.substring(index1,index1+9).contains("</ul>"))
{
tableEnded = true;
}
}
tableEnded = false;
for(int i = 0;!tableEnded;i++)
{
index1 = input.indexOf("<li>",index2);
index1 = input.indexOf("\\\"/",index1)+3;
index2 = input.indexOf("\\\" title",index1);
to = input.substring(index1,index2);
index1 = input.indexOf("</a>",index2);
index2 = input.indexOf("</li>",index1);
if(Jsoup.parse(input.substring(index1,index2)).text().contains("("))
{
conditions = Jsoup.parse(input.substring(index1,index2)).text();
evolvesTo.add(new String[]{name,to,conditions});
}
else evolvesTo.add(new String[]{name,to});
if(input.substring(index1,index1+9).contains("</ul>"))
{
tableEnded = true;
}
}
insertDigimon(name,dubName,level,attribute,description,"FALSE");
for(int i=0;i<attacks.size();i++)
{
insertAttack(attackName,attackDubName,name,attackDescription);
}
for(int i=0;i<evolvesFrom.size();i++)
{
if(evolvesFrom.get(i).length==3)
insertEvolution(evolvesFrom.get(1)[0],name,evolvesFrom.get(1)[2]);
else
insertEvolution(evolvesFrom.get(1)[0],name);
}
for(int i=0;i<evolvesTo.size();i++)
{
if(evolvesTo.get(i).length==3)
insertEvolution(name,evolvesTo.get(1)[1],evolvesTo.get(1)[2]);
else
insertEvolution(name,evolvesTo.get(1)[1]);
}
new DownloadFile().execute(imageUrl,name);
insertPicture(name,"/res/mipmap/xxxhdpi/"+name+".jpg");
}
class DownloadFile extends AsyncTask<String,Integer,Long> {
@Override
protected void onPreExecute() {
super.onPreExecute();
}
@Override
protected Long doInBackground(String... aurl) {
int count;
try {
URL url = new URL((String) aurl[0]);
URLConnection connection = url.openConnection();
connection.connect();
String targetFileName=aurl[1]+".jpg";
int lengthOfFile = connection.getContentLength();
String PATH = Environment.getExternalStorageDirectory()+ "/res/mipmap/xxxhdpi/";
File folder = new File(PATH);
if(!folder.exists()){
folder.mkdir();//If there is no folder it will be created.
}
InputStream input = new BufferedInputStream(url.openStream());
OutputStream output = new FileOutputStream(PATH+targetFileName);
byte data[] = new byte[1024];
long total = 0;
while ((count = input.read(data)) != -1) {
total += count;
publishProgress ((int)(total*100/lengthOfFile));
output.write(data, 0, count);
}
output.flush();
output.close();
input.close();
} catch (Exception e) {}
return null;
}
}
}
欢迎任何和所有帮助。
答案 0 :(得分：0)
您的简单游标适配器有问题， 这里提供三列
String[]columns = new String[] {"name","favourite","path"};
但是这里只提供两种观点：
int[]to = new int[] {R.id.Digimon_name,R.id.Digimon_favourites};
也在您的原始查询中
String query = "SELECT "+DIGIMON_TABLE_NAME+".ROWID AS _id,
"+DIGIMON_COLUMN_NAME+", "+DIGIMON_COLUMN_FAVOURITE+" FROM
"+DIGIMON_TABLE_NAME;
您只提供了“_id”，“name”和“favorite”列，而不是“路径”。