私は android と Sq-lite が初めてで、このデータベース クラスを動作させることができないようです。ホーム画面で国を選択すると、データ画面に移動し、対応する国のデータが表示されますが、データベースを読み込めません。logCat で次のエラーが発生します。詳細が必要な場合はお知らせください。 、どんな助けでも素晴らしいでしょう:
06-12 19:44:59.893: E/Trace(1215): error opening trace file: No such file or directory (2)
06-12 19:45:00.923: I/Choreographer(1215): Skipped 58 frames! The application may be doing too much work on its main thread.
06-12 19:45:01.003: D/gralloc_goldfish(1215): Emulator without GPU emulation det`enter code here`ected.
06-12 19:45:03.803: D/AndroidRuntime(1215): Shutting down VM
06-12 19:45:03.803: W/dalvikvm(1215): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
06-12 19:45:03.843: E/AndroidRuntime(1215): FATAL EXCEPTION: main
06-12 19:45:03.843: E/AndroidRuntime(1215): java.lang.IllegalStateException: getDatabase called recursively
06-12 19:45:03.843: E/AndroidRuntime(1215): at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:204)
06-12 19:45:03.843: E/AndroidRuntime(1215): at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:164)
06-12 19:45:03.843: E/AndroidRuntime(1215): at com.Jamie.dosanddonts.DosAndDontsDbAdapter.populateTable(DosAndDontsDbAdapter.java:43)
06-12 19:45:03.843: E/AndroidRuntime(1215): at com.Jamie.dosanddonts.DosAndDontsDbAdapter.onCreate(DosAndDontsDbAdapter.java:37)
06-12 19:45:03.843: E/AndroidRuntime(1215): at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:252)
06-12 19:45:03.843: E/AndroidRuntime(1215): at android.database.sqlite.SQLiteOpenHelper.getReadableDatabase(SQLiteOpenHelper.java:188)
06-12 19:45:03.843: E/AndroidRuntime(1215): at com.Jamie.dosanddonts.DosAndDontsDbAdapter.findCountry(DosAndDontsDbAdapter.java:341)
06-12 19:45:03.843: E/AndroidRuntime(1215): at com.Jamie.dosanddonts.HomeScreen$1.onClick(HomeScreen.java:38)
06-12 19:45:03.843: E/AndroidRuntime(1215): at android.view.View.performClick(View.java:4204)
06-12 19:45:03.843: E/AndroidRuntime(1215): at android.view.View$PerformClick.run(View.java:17355)
06-12 19:45:03.843: E/AndroidRuntime(1215): at android.os.Handler.handleCallback(Handler.java:725)
06-12 19:45:03.843: E/AndroidRuntime(1215): at android.os.Handler.dispatchMessage(Handler.java:92)
06-12 19:45:03.843: E/AndroidRuntime(1215): at android.os.Looper.loop(Looper.java:137)
06-12 19:45:03.843: E/AndroidRuntime(1215): at android.app.ActivityThread.main(ActivityThread.java:5041)
06-12 19:45:03.843: E/AndroidRuntime(1215): at java.lang.reflect.Method.invokeNative(Native Method)
06-12 19:45:03.843: E/AndroidRuntime(1215): at java.lang.reflect.Method.invoke(Method.java:511)
06-12 19:45:03.843: E/AndroidRuntime(1215): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
06-12 19:45:03.843: E/AndroidRuntime(1215): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
06-12 19:45:03.843: E/AndroidRuntime(1215): at dalvik.system.NativeStart.main(Native Method)
これが私のクラスです：
package com.Jamie.dosanddonts;
import java.util.ArrayList;
import java.util.List;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.widget.TextView;
public class DosAndDontsDbAdapter extends SQLiteOpenHelper {
private static final int DATABASE_VERSION = 1;
private static final String DATABASE_TABLE = "dosAndDonts";
private static final String COUNTRY = "Country name";
private static final String INDICATOR = "Indicator";
private static final String DESCRIPTION = "Description";
private TextView temp;
private Country currentCountry;
public DosAndDontsDbAdapter(Context context) {
super(context, DATABASE_TABLE, null,DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
// TODO Auto-generated method stub
String CREATE_TABLE = "CREATE TABLE " + DATABASE_TABLE + "("
+ COUNTRY + " TEXT," + INDICATOR + " TEXT,"
+ DESCRIPTION + " TEXT" + ")";
db.execSQL(CREATE_TABLE);
populateTable();
}
public void populateTable()
{
SQLiteDatabase db = this.getWritableDatabase();
ContentValues cv = new ContentValues();
cv.put(COUNTRY, "France");
cv.put(INDICATOR, "Do");
cv.put(DESCRIPTION, "Shake hands when you greet someone.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "France");
cv.put(INDICATOR, "Do");
cv.put(DESCRIPTION, "Do say 'bonjour' or 'bonsoir'.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "France");
cv.put(INDICATOR, "Do");
cv.put(DESCRIPTION, "Flowers should be given in odd numbers but not 13.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "France");
cv.put(INDICATOR, "Do");
cv.put(DESCRIPTION, "Always smile");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "France");
cv.put(INDICATOR, "Do");
cv.put(DESCRIPTION, "Always arrive on time for dinner.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "France");
cv.put(INDICATOR, "Dont");
cv.put(DESCRIPTION, "When eating Do not rest your elbows on the table.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "France");
cv.put(INDICATOR, "Dont");
cv.put(DESCRIPTION, "Don't refer to someone by their first name unless you are a close friend.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "France");
cv.put(INDICATOR, "Dont");
cv.put(DESCRIPTION, "Never offer cheap wine.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "France");
cv.put(INDICATOR, "Dont");
cv.put(DESCRIPTION, "Do not begin eating until the hostess says 'bon appetit' ");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "France");
cv.put(INDICATOR, "Dont");
cv.put(DESCRIPTION, "Do not cut salad with a knife and fork. Fold the lettuce on to your fork. ");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "United_Kingdom");
cv.put(INDICATOR, "Do");
cv.put(DESCRIPTION, "Shake hands when greeting and leaving someone.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "United_Kingdom");
cv.put(INDICATOR, "Do");
cv.put(DESCRIPTION, "When you have finished eating lay your knide and fork parallel across your plate.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "United_Kingdom");
cv.put(INDICATOR, "Do");
cv.put(DESCRIPTION, "When in a pub pay for a round of drinks for everyone in your group.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "United_Kingdom");
cv.put(INDICATOR, "Do");
cv.put(DESCRIPTION, "When eating The fork is held tines down so food is scooped on to the back of the fork.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "United_Kingdom");
cv.put(INDICATOR, "Do");
cv.put(DESCRIPTION, "When eating, Table manners are Continental.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "United_Kingdom");
cv.put(INDICATOR, "Dont");
cv.put(DESCRIPTION, "Never get in their personal space.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "United_Kingdom");
cv.put(INDICATOR, "Dont");
cv.put(DESCRIPTION, "It's inapropriate to ask personal questions.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "United_Kingdom");
cv.put(INDICATOR, "Dont");
cv.put(DESCRIPTION, "They'll become unconfortalbe if engage in prolonged eye contact.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "United_Kingdom");
cv.put(INDICATOR, "Dont");
cv.put(DESCRIPTION, "When eating don't rest your elbows on the table.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "United_Kingdom");
cv.put(INDICATOR, "Dont");
cv.put(DESCRIPTION, "DON'T make the V for victory sign with your palm facing yourself.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Italy");
cv.put(INDICATOR, "Do");
cv.put(DESCRIPTION, "When greeting The usual handshake with direct eye contact.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Italy");
cv.put(INDICATOR, "Do");
cv.put(DESCRIPTION, "Have calling card made.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Italy");
cv.put(INDICATOR, "Do");
cv.put(DESCRIPTION, "If you bring wine, make sure it is a good vintage.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Italy");
cv.put(INDICATOR, "Do");
cv.put(DESCRIPTION, "If you are invited to a meal, bring gift-wrapped such as wine or chocolates. ");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Italy");
cv.put(INDICATOR, "Do");
cv.put(DESCRIPTION, "Table manners are Continental.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Italy");
cv.put(INDICATOR, "Dont");
cv.put(DESCRIPTION, "Never give your business card in lieu of a calling card in a social situation.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Italy");
cv.put(INDICATOR, "Dont");
cv.put(DESCRIPTION, "Do not give chrysanthemums as they are used at funerals.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Italy");
cv.put(INDICATOR, "Dont");
cv.put(DESCRIPTION, "Do not keep your hands in your lap during the meal.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Italy");
cv.put(INDICATOR, "Dont");
cv.put(DESCRIPTION, "Do not give red flowers as they indicate secrecy. ");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Italy");
cv.put(INDICATOR, "Dont");
cv.put(DESCRIPTION, "Do not give yellow flowers as they indicate jealousy.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Germany");
cv.put(INDICATOR, "Do");
cv.put(DESCRIPTION, "A quick, firm handshake is the traditional greeting.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Germany");
cv.put(INDICATOR, "Do");
cv.put(DESCRIPTION, "Titles are very important and denote respect.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Germany");
cv.put(INDICATOR, "Do");
cv.put(DESCRIPTION, "When entering a room, shake hands with everyone individually.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Germany");
cv.put(INDICATOR, "Do");
cv.put(DESCRIPTION, "Yellow roses or tea roses are always well received. ");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Germany");
cv.put(INDICATOR, "Do");
cv.put(DESCRIPTION, "If you bring wine, it should be imported.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Germany");
cv.put(INDICATOR, "Dont");
cv.put(DESCRIPTION, "Do not give lilies or chrysanthemums as they are used at funerals. ");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Germany");
cv.put(INDICATOR, "Dont");
cv.put(DESCRIPTION, "Never arrive early, aslways on time.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Germany");
cv.put(INDICATOR, "Dont");
cv.put(DESCRIPTION, "Do not begin eating until the hostess starts.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Germany");
cv.put(INDICATOR, "Dont");
cv.put(DESCRIPTION, "Do not rest your elbows on the table.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Germany");
cv.put(INDICATOR, "Dont");
cv.put(DESCRIPTION, "Do not cut lettuce in a salad. Fold it using your knife and fork.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Spain");
cv.put(INDICATOR, "Do");
cv.put(DESCRIPTION, "Many men use a two-handed shake.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Spain");
cv.put(INDICATOR, "Do");
cv.put(DESCRIPTION, "Always bring a gift to someones house.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Spain");
cv.put(INDICATOR, "Do");
cv.put(DESCRIPTION, "Always keep your hands visible when eating.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Spain");
cv.put(INDICATOR, "Do");
cv.put(DESCRIPTION, "Use utensils to eat most food.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Spain");
cv.put(INDICATOR, "Do");
cv.put(DESCRIPTION, "If you have not finished eating, cross your knife and fork on your plate.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Spain");
cv.put(INDICATOR, "Dont");
cv.put(DESCRIPTION, "Do not begin eating until the hostess starts. ");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Spain");
cv.put(INDICATOR, "Dont");
cv.put(DESCRIPTION, "Do not get up until the guest of honour does. ");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Spain");
cv.put(INDICATOR, "Dont");
cv.put(DESCRIPTION, "Never toast first always allow the host to.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Spain");
cv.put(INDICATOR, "Dont");
cv.put(DESCRIPTION, "When at dinner don't sit unless invited to do so.");
db.insert(DATABASE_TABLE, null, cv);
cv.clear();
cv.put(COUNTRY, "Spain");
cv.put(INDICATOR, "Dont");
cv.put(DESCRIPTION, "Don't go bare cheasted anywhere other than the beach or poolside.");
db.insert(DATABASE_TABLE, null, cv);
db.close();
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// TODO Auto-generated method stub
}
public void findCountry(String country)
{
int index = 0;
SQLiteDatabase mDb = this.getReadableDatabase();
List <DosAndDonts> dosNDonts = new ArrayList <DosAndDonts>();
Cursor cursor = mDb.query(DATABASE_TABLE, new String[] {INDICATOR, DESCRIPTION }, COUNTRY + "=?",
new String[] { String.valueOf(country) }, null, null, null, null);
Country returnedCountry = new Country();
returnedCountry.setName(country);
while(cursor.moveToNext())
{
dosNDonts.add(new DosAndDonts(cursor.getString(index),
cursor.getString(index + 1)));
index = index + 2;
}
returnedCountry.setCountryDosAndDonts(dosNDonts);
currentCountry = returnedCountry;
this.displayResult();
}
public void displayResult()
{
TextView country = (TextView) temp.findViewById(R.id.Country_name);
TextView do1 = (TextView) temp.findViewById(R.id.Do1);
TextView do2 = (TextView) temp.findViewById(R.id.Do2);
TextView do3 = (TextView) temp.findViewById(R.id.Do3);
TextView do4 = (TextView) temp.findViewById(R.id.Do4);
TextView do5 = (TextView) temp.findViewById(R.id.Do5);
TextView dont1 = (TextView) temp.findViewById(R.id.Dont1);
TextView dont2 = (TextView) temp.findViewById(R.id.Dont2);
TextView dont3 = (TextView) temp.findViewById(R.id.Dont3);
TextView dont4 = (TextView) temp.findViewById(R.id.Dont4);
TextView dont5 = (TextView) temp.findViewById(R.id.Dont5);
TextView dos[] = { do1, do2, do3, do4, do5 };
TextView donts[] = { dont1, dont2, dont3, dont4, dont5 };
int doCounter = 0;
int dontCounter = 0;
int index = 0;
List <DosAndDonts> dosNDonts = currentCountry.getCountryDosAndDonts();
country.setText(currentCountry.getName());
while (index < dosNDonts.size())
{
if (dosNDonts.get(index).getIndicator().equals("Do"))
{
dos[doCounter].setText(dosNDonts.get(index).getDescription());
doCounter++;
}
else
{
donts[dontCounter].setText(dosNDonts.get(index).getDescription());
dontCounter++;
}
index++;
}
}
}
こんにちは、ご返信ありがとうございます。onCreate() および populate() メソッドに変更を加えたところ、(1) から始まる logCat にこの一連のエラー メッセージが表示され、一連のメッセージが約 50 回繰り返されます。助けは素晴らしいでしょう。
06-12 19:53:00.803: I/Choreographer(1549): Skipped 56 frames! The application may be doing too much work on its main thread.
06-12 19:53:00.873: D/gralloc_goldfish(1549): Emulator without GPU emulation detected.
06-12 19:53:04.593: E/SQLiteLog(1549): (1) near "name": syntax error
06-12 19:53:04.653: E/SQLiteDatabase(1549): Error inserting Country name=France Description=Shake hands when you greet someone. Indicator=Do
06-12 19:53:04.653: E/SQLiteDatabase(1549): android.database.sqlite.SQLiteException: near "name": syntax error (code 1): , while compiling: INSERT INTO dosAndDonts(Country name,Description,Indicator) VALUES (?,?,?)
06-12 19:53:04.653: E/SQLiteDatabase(1549): at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
06-12 19:53:04.653: E/SQLiteDatabase(1549): at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:882)
06-12 19:53:04.653: E/SQLiteDatabase(1549): at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:493)
06-12 19:53:04.653: E/SQLiteDatabase(1549): at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
06-12 19:53:04.653: E/SQLiteDatabase(1549): at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
06-12 19:53:04.653: E/SQLiteDatabase(1549): at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:31)
06-12 19:53:04.653: E/SQLiteDatabase(1549): at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1467)
06-12 19:53:04.653: E/SQLiteDatabase(1549): at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1339)
06-12 19:53:04.653: E/SQLiteDatabase(1549): at com.Jamie.dosanddonts.DosAndDontsDbAdapter.populateTable(DosAndDontsDbAdapter.java:49)
06-12 19:53:04.653: E/SQLiteDatabase(1549): at com.Jamie.dosanddonts.DosAndDontsDbAdapter.onCreate(DosAndDontsDbAdapter.java:37)
06-12 19:53:04.653: E/SQLiteDatabase(1549): at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:252)
06-12 19:53:04.653: E/SQLiteDatabase(1549): at android.database.sqlite.SQLiteOpenHelper.getReadableDatabase(SQLiteOpenHelper.java:188)
06-12 19:53:04.653: E/SQLiteDatabase(1549): at com.Jamie.dosanddonts.DosAndDontsDbAdapter.findCountry(DosAndDontsDbAdapter.java:341)
06-12 19:53:04.653: E/SQLiteDatabase(1549): at com.Jamie.dosanddonts.HomeScreen$1.onClick(HomeScreen.java:38)
06-12 19:53:04.653: E/SQLiteDatabase(1549): at android.view.View.performClick(View.java:4204)
06-12 19:53:04.653: E/SQLiteDatabase(1549): at android.view.View$PerformClick.run(View.java:17355)
06-12 19:53:04.653: E/SQLiteDatabase(1549): at android.os.Handler.handleCallback(Handler.java:725)
06-12 19:53:04.653: E/SQLiteDatabase(1549): at android.os.Handler.dispatchMessage(Handler.java:92)
06-12 19:53:04.653: E/SQLiteDatabase(1549): at android.os.Looper.loop(Looper.java:137)
06-12 19:53:04.653: E/SQLiteDatabase(1549): at android.app.ActivityThread.main(ActivityThread.java:5041)
06-12 19:53:04.653: E/SQLiteDatabase(1549): at java.lang.reflect.Method.invokeNative(Native Method)
06-12 19:53:04.653: E/SQLiteDatabase(1549): at java.lang.reflect.Method.invoke(Method.java:511)
06-12 19:53:04.653: E/SQLiteDatabase(1549): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
06-12 19:53:04.653: E/SQLiteDatabase(1549): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
06-12 19:53:04.653: E/SQLiteDatabase(1549): at dalvik.system.NativeStart.main(Native Method)