データベースが作成されている場所でアクティビティを開くと、SQLiteException:nosuchcolumnというエラーですぐにクラッシュします。SQLiteはまだ私には非常に謎なので、私は何をすべきか悩んでいます。
*新しいエラー。今回はワークアウトノートを作成できますが、クリックして編集すると、そのような列がもう1つ存在しません。今回は、squatLabelです。しかし、それは存在します.... *
編集:この時点で私が得ている唯一のエラーは、そのような列が存在しないことです:squatLabel
import android.app.ListActivity;
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ContextMenu.ContextMenuInfo;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
import android.widget.AdapterView.AdapterContextMenuInfo;
public class WorkoutList extends ListActivity {
private static final int ACTIVITY_CREATE=0;
private static final int ACTIVITY_EDIT=1;
private static final int INSERT_ID = Menu.FIRST;
private static final int DELETE_ID = Menu.FIRST + 1;
private StrongDbAdapter mDbHelper;
/** Called when the 5x5 button is pressed in first activity */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.workout_list);
mDbHelper = new StrongDbAdapter(this);
mDbHelper.open();
fillData();
registerForContextMenu(getListView());
}
private void fillData() {
Cursor NotesCursor = mDbHelper.fetchAllNotes();
// Get all of the rows from the database and create the item list
NotesCursor = mDbHelper.fetchAllNotes();
startManagingCursor(NotesCursor);
// Create an array to specify the fields we want to display in the list (only TITLE)
String[] from = new String[]{StrongDbAdapter.KEY_TITLE,};
// and an array of the fields we want to bind those fields to (in this case just text1)
int[] to = new int[]{R.id.workout_row };
// Now create a simple cursor adapter and set it to display
SimpleCursorAdapter notes =
new SimpleCursorAdapter(this, R.layout.workout_row, NotesCursor, from, to);
setListAdapter(notes);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
menu.add(0, INSERT_ID, 0, R.string.menu_insert);
return true;
}
@Override
public boolean onMenuItemSelected(int featureId, MenuItem item) {
switch(item.getItemId()) {
case INSERT_ID:
createNote();
return true;
}
return super.onMenuItemSelected(featureId, item);
}
@Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
menu.add(0, DELETE_ID, 0, R.string.menu_delete);
}
@Override
public boolean onContextItemSelected(MenuItem item) {
switch(item.getItemId()) {
case DELETE_ID:
AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
mDbHelper.deleteNote(info.id);
fillData();
return true;
}
return super.onContextItemSelected(item);
}
private void createNote() {
Intent i = new Intent(this, WorkoutEdit.class);
startActivityForResult(i, ACTIVITY_CREATE);
}
@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
super.onListItemClick(l, v, position, id);
Intent i = new Intent(this, WorkoutEdit.class);
i.putExtra(StrongDbAdapter.KEY_ROWID, id);
startActivityForResult(i, ACTIVITY_EDIT);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
super.onActivityResult(requestCode, resultCode, intent);
fillData();
}
}
これが私のWorkoutEditクラスの一部で、問題が発生しているようです。
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.database.Cursor;
import android.os.Bundle;
import android.text.InputType;
import android.view.View;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RadioGroup;
import android.widget.RadioGroup.OnCheckedChangeListener;
import android.widget.TextView;
import android.widget.ViewFlipper;
public class WorkoutEdit extends Activity {
public TextView mTitleText;
//private EditText mBodyText;
private Long mRowId;
private StrongDbAdapter mDbHelper;
private ViewFlipper viewFlipper;
public TextView squats;
public boolean workoutA;
public String workoutState;
//private double rowId = mRowId;
public String squatLabel;
public Button confirmButton;
private Long prevId ;
private void populateFields() {
if (mRowId != null) {
Cursor note = mDbHelper.fetchNote(mRowId);
startManagingCursor(note);
//mTitleText.setText(note.getString(
//note.getColumnIndexOrThrow(StrongDbAdapter.KEY_TITLE)));
workoutState=(note.getString(
note.getColumnIndexOrThrow(StrongDbAdapter.KEY_TITLE)));
squats.setText(note.getString(note.getColumnIndexOrThrow(StrongDbAdapter.SQUAT_LABEL)));
}
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
saveState();
outState.putSerializable(StrongDbAdapter.KEY_ROWID, mRowId);
}
@Override
protected void onPause() {
super.onPause();
saveState();
}
@Override
protected void onResume() {
super.onResume();
populateFields();
}
//Saves all the data to the database
private void saveState() {
String title = workoutState;
String squatLabel = squats.getText().toString();
if (mRowId == null) {
long id = mDbHelper.createNote(title, squatLabel);
if (id > 0) {
mRowId = id;
}
} else {
mDbHelper.updateNote(mRowId, title);
}
}
}
@Override
protected void onDestroy() {
super.onDestroy();
if (mDbHelper != null) {
mDbHelper.close();
}
}
}
そして、これが私のDbAdapterです
* Createステートメントを更新しました*
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;
public class StrongDbAdapter {
public static final String KEY_TITLE = "title";
public static final String KEY_BODY = "body";
public static final String KEY_ROWID = "_id";
public static final String WORKOUT_STATE = "workoutState";
public static final String SQUAT_LABEL = "squatLabel";
private static final String TAG = "StrongDbAdapter";
private DatabaseHelper mDbHelper;
private SQLiteDatabase mDb;
private static final String DATABASE_NAME = "data";
private static final String DATABASE_TABLE = "notes";
private static final int DATABASE_VERSION = 2;
/**
* Database creation sql statement
*/
private static final String DATABASE_CREATE =
"create table notes (_id integer primary key autoincrement , "
+ "title text," +
" squatLabel text, workoutState text );";
private final Context mCtx;
private static class DatabaseHelper extends SQLiteOpenHelper {
DatabaseHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL(DATABASE_CREATE);
}
@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 notes");
onCreate(db);
}
}
/**
* Constructor - takes the context to allow the database to be
* opened/created
*
* @param ctx the Context within which to work
*/
public StrongDbAdapter(Context ctx) {
this.mCtx = ctx;
}
/**
* Open the notes database. If it cannot be opened, try to create a new
* instance of the database. If it cannot be created, throw an exception to
* signal the failure
*
* @return this (self reference, allowing this to be chained in an
* initialization call)
* @throws SQLException if the database could be neither opened or created
*/
public StrongDbAdapter open() throws SQLException {
mDbHelper = new DatabaseHelper(mCtx);
mDb = mDbHelper.getWritableDatabase();
return this;
}
public void close() {
mDbHelper.close();
}
public long createNote(String title, String squatLabel) {
ContentValues initialValues = new ContentValues();
initialValues.put(KEY_TITLE, title);
//initialValues.put(WORKOUT_STATE, workoutState);
initialValues.put(SQUAT_LABEL, squatLabel);
return mDb.insert(DATABASE_TABLE, null, initialValues);
}
/**
* Delete the note with the given rowId
*
* @param rowId id of note to delete
* @return true if deleted, false otherwise
*/
public boolean deleteNote(long rowId) {
return mDb.delete(DATABASE_TABLE, KEY_ROWID + "=" + rowId, null) > 0;
}
/**
* Return a Cursor over the list of all notes in the database
*
* @return Cursor over all notes
*/
public Cursor fetchAllNotes() {
return mDb.query(DATABASE_TABLE, new String[] {KEY_ROWID, KEY_TITLE,
WORKOUT_STATE}, null, null, null, null, null);
}
/**
* Return a Cursor positioned at the note that matches the given rowId
*
* @param rowId id of note to retrieve
* @return Cursor positioned to matching note, if found
* @throws SQLException if note could not be found/retrieved
*/
public Cursor fetchNote(long rowId) throws SQLException {
Cursor mCursor =
mDb.query(true, DATABASE_TABLE, new String[] {KEY_ROWID,
KEY_TITLE, WORKOUT_STATE}, KEY_ROWID + "='" + rowId+"'", null,
null, null, null, null);
if (mCursor != null) {
mCursor.moveToFirst();
}
return mCursor;
}
/**
* Update the note using the details provided. The note to be updated is
* specified using the rowId, and it is altered to use the title and body
* values passed in
* @return true if the note was successfully updated, false otherwise
*/
public boolean updateNote(long rowId, String title) {
ContentValues args = new ContentValues();
args.put(KEY_TITLE, title);
//args.put(WORKOUT_STATE, workoutState);
return mDb.update(DATABASE_TABLE, args, KEY_ROWID + "=" + rowId, null) > 0;
}
}
そして最後に私のLogCat:
*新しいcreateステートメントでは、今回はそのような列squatLabelはありません。*
08-05 18:57:05.336: E/AndroidRuntime(1131): FATAL EXCEPTION: main
08-05 18:57:05.336: E/AndroidRuntime(1131): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.anapoleon.android.stronglifts/com.anapoleon.android.stronglifts.WorkoutEdit}: java.lang.IllegalArgumentException: column 'squatLabel' does not exist
08-05 18:57:05.336: E/AndroidRuntime(1131): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1955)
08-05 18:57:05.336: E/AndroidRuntime(1131): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1980)
08-05 18:57:05.336: E/AndroidRuntime(1131): at android.app.ActivityThread.access$600(ActivityThread.java:122)
08-05 18:57:05.336: E/AndroidRuntime(1131): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1146)
08-05 18:57:05.336: E/AndroidRuntime(1131): at android.os.Handler.dispatchMessage(Handler.java:99)
08-05 18:57:05.336: E/AndroidRuntime(1131): at android.os.Looper.loop(Looper.java:137)
08-05 18:57:05.336: E/AndroidRuntime(1131): at android.app.ActivityThread.main(ActivityThread.java:4340)
08-05 18:57:05.336: E/AndroidRuntime(1131): at java.lang.reflect.Method.invokeNative(Native Method)
08-05 18:57:05.336: E/AndroidRuntime(1131): at java.lang.reflect.Method.invoke(Method.java:511)
08-05 18:57:05.336: E/AndroidRuntime(1131): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
08-05 18:57:05.336: E/AndroidRuntime(1131): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
08-05 18:57:05.336: E/AndroidRuntime(1131): at dalvik.system.NativeStart.main(Native Method)
08-05 18:57:05.336: E/AndroidRuntime(1131): Caused by: java.lang.IllegalArgumentException: column 'squatLabel' does not exist
08-05 18:57:05.336: E/AndroidRuntime(1131): at android.database.AbstractCursor.getColumnIndexOrThrow(AbstractCursor.java:301)
08-05 18:57:05.336: E/AndroidRuntime(1131): at com.anapoleon.android.stronglifts.WorkoutEdit.populateFields(WorkoutEdit.java:199)
08-05 18:57:05.336: E/AndroidRuntime(1131): at com.anapoleon.android.stronglifts.WorkoutEdit.onCreate(WorkoutEdit.java:82)
08-05 18:57:05.336: E/AndroidRuntime(1131): at android.app.Activity.performCreate(Activity.java:4465)
08-05 18:57:05.336: E/AndroidRuntime(1131): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
08-05 18:57:05.336: E/AndroidRuntime(1131): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1919)
08-05 18:57:05.336: E/AndroidRuntime(1131): ... 11 more
前もって感謝します!:)