SQLiteデータベースからデータを取得してスピナーに入れる方法についてサポートが必要です。さらに、Androidアプリを開くことができず、LogCatに「そのようなcolumn：nameはありません」と表示されます。DBAdapterクラスと非DBAdapterクラスも確認しました。
2つのDBAdapterクラス（InfoDBAdapter.javaとBuddiesDBAdapter.java）があり、どちらもPersonalInfo.javaクラスにリンクしています。
以下は、データベースからデータを取得してスピナー（PersonalInfo.class）に配置するためのコードです。
InfoDBAdapter infoDB = new InfoDBAdapter(this);
//BuddiesDBAdapter buddyDB = new BuddiesDBAdapter(this);
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.info);
BuddiesDBAdapter buddyDB = new BuddiesDBAdapter(this);
buddyDB.open();
Cursor c = buddyDB.getAllContacts();
//Create an array to specify which fields want to display
String[] from = new String[] {"name"};
//Create an array of the display item want to bind our data to
int[] to = new int[] {R.id.fName};
nameSpinner = (Spinner) findViewById(R.id.nameSpinner);
SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, android.R.layout.simple_spinner_item, c, from, to);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
nameSpinner.setAdapter(adapter);
buddyDB.close();
これらは、データベースに情報を挿入するための挿入コードです。
btnSave = (Button) findViewById(R.id.btnSave);
btnSave.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
infoDB.open();
long id;
Spinner nameSpinner = (Spinner) findViewById(R.id.nameSpinner);
String NameValue = nameSpinner.getSelectedItem().toString();
EditText txtDate = (EditText) findViewById(R.id.txtDate);
String DateValue = txtDate.getText().toString();
EditText txtType = (EditText) findViewById(R.id.txtType);
String TypeValue = txtType.getText().toString();
EditText txtLikes = (EditText) findViewById(R.id.txtLikes);
String LikesValue = txtLikes.getText().toString();
EditText txtDislikes = (EditText) findViewById(R.id.txtDislikes);
String DislikesValue = txtDislikes.getText().toString();
id = infoDB.insertContact(NameValue, DateValue, TypeValue, LikesValue, DislikesValue);
infoDB.close();
Toast.makeText(getBaseContext(),
"Your information is saved successfully!", Toast.LENGTH_SHORT).show();
}
});
以下は2つのDBAdapterクラスです
InfoDBAdapter.java
public class InfoDBAdapter
{
public static final String KEY_ROWID = "_id";
public static final String KEY_NAME = "name";
public static final String KEY_DATE = "date";
public static final String KEY_TYPE = "type";
public static final String KEY_LIKES = "likes";
public static final String KEY_DISLIKES = "dislikes";
private static final String TAG = "InfoDBAdapter";
private static final String DATABASE_NAME = "anniversary";
private static final String DATABASE_TABLE = "friends";
private static final int DATABASE_VERSION = 2;
private static final String DATABASE_CREATE = "create table friends(_id integer primary key autoincrement, "
+ "name text not null, date text not null, type text not null, likes text not null, dislikes text not null);";
private final Context context;
private DatabaseHelper DBHelper;
private SQLiteDatabase db;
public InfoDBAdapter(Context ctx)
{
this.context = ctx;
DBHelper = new DatabaseHelper(context);
}
private static class DatabaseHelper extends SQLiteOpenHelper
{
DatabaseHelper(Context context)
{
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db)
{
try
{
db.execSQL(DATABASE_CREATE);
} catch (SQLException e)
{
e.printStackTrace();
}
}// end onCreate()
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion)
{
Log.w(TAG, "Upgrading database from version " + oldVersion + " to "
+ newVersion + ", which will destroy all old data");
db.execSQL("DROP TABLE IF EXISTS friends");
onCreate(db);
}// end onUpgrade()
}// end DatabaseHelper
public InfoDBAdapter open() throws SQLException
{
db = DBHelper.getWritableDatabase();
return this;
}// end open()
public void close()
{
DBHelper.close();
}// end close()
public long insertContact(String name, String date, String type, String likes, String dislikes)
{
ContentValues initialValues = new ContentValues();
initialValues.put(KEY_NAME, name);
initialValues.put(KEY_DATE, date);
initialValues.put(KEY_TYPE, type);
initialValues.put(KEY_LIKES, likes);
initialValues.put(KEY_DISLIKES, dislikes);
return db.insert(DATABASE_TABLE, null, initialValues);
}// end insertContact()
public boolean deleteContact(long rowId)
{
return db.delete(DATABASE_TABLE, KEY_ROWID + "=" + rowId, null) > 0;
}// end deleteContact()
public Cursor getAllContacts()
{
return db.query(DATABASE_TABLE, new String[]
{ KEY_ROWID, KEY_NAME, KEY_DATE, KEY_TYPE, KEY_LIKES, KEY_DISLIKES }, null, null, null, null, null);
}// end getAllContacts()
public Cursor getContact(long rowId) throws SQLException
{
Cursor mCursor = db.query(true, DATABASE_TABLE, new String[] {
KEY_ROWID, KEY_NAME, KEY_DATE, KEY_TYPE, KEY_LIKES, KEY_DISLIKES }, KEY_ROWID + "=" + rowId,
null, null, null, null, null);
if (mCursor != null)
{
mCursor.moveToFirst();
}
return mCursor;
}// end getContact()
public boolean updateContact(long rowId, String name, String date, String type, String likes, String dislikes)
{
ContentValues args = new ContentValues();
args.put(KEY_NAME, name);
args.put(KEY_DATE, date);
args.put(KEY_TYPE, type);
args.put(KEY_LIKES, likes);
args.put(KEY_DISLIKES, dislikes);
return db.update(DATABASE_TABLE, args, KEY_ROWID + "=" + rowId, null) > 0;
}// end updateContact()
}//end DBAdapter
BuddiesDBAdapter.java
public class BuddiesDBAdapter
{
public static final String KEY_ROWID = "_id";
public static final String KEY_NAME = "buddy_name";
private static final String TAG = "BuddiesDBAdapter";
private static final String DATABASE_NAME = "anniversary";
private static final String DATABASE_TABLE = "buddiesList";
private static final int DATABASE_VERSION = 2;
private static final String DATABASE_CREATE = "create table namesList(_id integer primary key autoincrement, "
+ "buddy_name text not null);";
private final Context context;
private DatabaseHelper DBHelper;
private SQLiteDatabase db;
public BuddiesDBAdapter(Context ctx)
{
this.context = ctx;
DBHelper = new DatabaseHelper(context);
}
private static class DatabaseHelper extends SQLiteOpenHelper
{
DatabaseHelper(Context context)
{
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db)
{
try
{
db.execSQL(DATABASE_CREATE);
} catch (SQLException e)
{
e.printStackTrace();
}
}// end onCreate()
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion)
{
Log.w(TAG, "Upgrading database from version " + oldVersion + " to "
+ newVersion + ", which will destroy all old data");
db.execSQL("DROP TABLE IF EXISTS namesList");
onCreate(db);
}// end onUpgrade()
}//end DatabaseHelper class
public BuddiesDBAdapter open() throws SQLException
{
db = DBHelper.getWritableDatabase();
return this;
}// end open()
public void close()
{
DBHelper.close();
}// end close()
public long insertContact(String buddy_name)
{
ContentValues values = new ContentValues();
values.put(KEY_NAME, buddy_name);
return db.insert(DATABASE_TABLE, null, values);
}//end insertContact()
public boolean deleteContact(long rowId)
{
return db.delete(DATABASE_TABLE, KEY_ROWID + "=" + rowId, null) > 0;
}// end deleteContact()
public Cursor getAllContacts()
{
return db.query(DATABASE_TABLE, new String[]
{ KEY_ROWID, KEY_NAME }, null, null, null, null, null);
}// end getAllContacts()
public Cursor getContact(long rowId) throws SQLException
{
Cursor mCursor = db.query(true, DATABASE_TABLE, new String[] {
KEY_ROWID, KEY_NAME }, KEY_ROWID + "=" + rowId,
null, null, null, null, null);
if (mCursor != null)
{
mCursor.moveToFirst();
}
return mCursor;
}// end getContact()
public boolean updateContact(long rowId, String buddy_name)
{
ContentValues args = new ContentValues();
args.put(KEY_NAME, buddy_name);
return db.update(DATABASE_TABLE, args, KEY_ROWID + "=" + rowId, null) > 0;
}//end updateContact()
}
これについて助けが必要です。どんな助けでもいただければ幸いです。どうもありがとう！