what can I do about the error code 19? I have posted the LogCat, my DatabaseAdapter (RemindersDbAdapter) and some code of the RemindersEditActivity which I think causes the problem (line 316- 336)
This is my LogCat:
06-05 23:57:53.607: E/AndroidRuntime(549): android.database.sqlite.SQLiteConstraintException: error code 19: constraint failed
06-05 23:57:53.607: E/AndroidRuntime(549): at android.database.sqlite.SQLiteStatement.native_execute(Native Method)
06-05 23:57:53.607: E/AndroidRuntime(549): at android.database.sqlite.SQLiteStatement.executeUpdateDelete(SQLiteStatement.java:92)
06-05 23:57:53.607: E/AndroidRuntime(549): at android.database.sqlite.SQLiteDatabase.updateWithOnConflict(SQLiteDatabase.java:1810)
06-05 23:57:53.607: E/AndroidRuntime(549): at android.database.sqlite.SQLiteDatabase.update(SQLiteDatabase.java:1761)
06-05 23:57:53.607: E/AndroidRuntime(549): at com.xyz.android.taskreminder.RemindersDbAdapter.updateReminder(RemindersDbAdapter.java:204)
06-05 23:57:53.607: E/AndroidRuntime(549): at com.xyz.android.taskreminder.ReminderEditActivity.saveState(ReminderEditActivity.java:333)
06-05 23:57:53.607: E/AndroidRuntime(549): at com.xyz.android.taskreminder.ReminderEditActivity.access$0(ReminderEditActivity.java:316)
06-05 23:57:53.607: E/AndroidRuntime(549): at com.xyz.android.taskreminder.ReminderEditActivity$3.onClick(ReminderEditActivity.java:161)
06-05 23:57:53.607: E/AndroidRuntime(549): at android.view.View.performClick(View.java:3511)
06-05 23:57:53.607: E/AndroidRuntime(549): at android.view.View$PerformClick.run(View.java:14105)
06-05 23:57:53.607: E/AndroidRuntime(549): at android.os.Handler.handleCallback(Handler.java:605)
06-05 23:57:53.607: E/AndroidRuntime(549): at android.os.Handler.dispatchMessage(Handler.java:92)
06-05 23:57:53.607: E/AndroidRuntime(549): at android.os.Looper.loop(Looper.java:137)
06-05 23:57:53.607: E/AndroidRuntime(549): at android.app.ActivityThread.main(ActivityThread.java:4424)
06-05 23:57:53.607: E/AndroidRuntime(549): at java.lang.reflect.Method.invokeNative(Native Method)
06-05 23:57:53.607: E/AndroidRuntime(549): at java.lang.reflect.Method.invoke(Method.java:511)
06-05 23:57:53.607: E/AndroidRuntime(549): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
06-05 23:57:53.607: E/AndroidRuntime(549): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
06-05 23:57:53.607: E/AndroidRuntime(549): at dalvik.system.NativeStart.main(Native Method)
This is my DatabaseAdapter:
public class RemindersDbAdapter {
//
// Databsae Related Constants
//
private static final String DATABASE_NAME = "data";
private static final String DATABASE_TABLE = "reminders";
private static final int DATABASE_VERSION = 10;
public static final String KEY_TITLE = "title";
public static final String KEY_BODY = "body";
public static final String KEY_IMAGE = "image";
public static final String KEY_DATE_TIME = "reminder_date_time";
public static final String KEY_ROWID = "_id";
private static final String TAG = "ReminderDbAdapter";
private DatabaseHelper mDbHelper;
private SQLiteDatabase mDb;
/**
* Database creation SQL statement
*/
private static final String DATABASE_CREATE =
"create table " + DATABASE_TABLE + " ("
+ KEY_ROWID + " integer primary key autoincrement, "
+ KEY_TITLE + " text not null, "
+ KEY_BODY + " text not null, "
+ KEY_IMAGE + " text not null, "
+ KEY_DATE_TIME + " text not null);";
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);
db.execSQL("PRAGMA foreign_keys = OFF;");
}
@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 " + DATABASE_TABLE);
onCreate(db);
}
}
/**
* Constructor - takes the context to allow the database to be
* opened/created
*
* @param ctx the Context within which to work
*/
public RemindersDbAdapter(Context ctx) {
this.mCtx = ctx;
}
public RemindersDbAdapter open() throws SQLException {
mDbHelper = new DatabaseHelper(mCtx);
mDb = mDbHelper.getWritableDatabase();
return this;
}
public void close() {
mDbHelper.close();
}
public long createReminder(String title, String body, String path, String reminderDateTime) {
ContentValues initialValues = new ContentValues();
initialValues.put(KEY_TITLE, title);
initialValues.put(KEY_BODY, body);
initialValues.put(KEY_IMAGE, path);
initialValues.put(KEY_DATE_TIME, reminderDateTime);
return mDb.insert(DATABASE_TABLE, null, initialValues);
}
public boolean deleteReminder(long rowId) {
return mDb.delete(DATABASE_TABLE, KEY_ROWID + "=" + rowId, null) > 0;
}
public Cursor fetchAllReminders() {
return mDb.query(DATABASE_TABLE, new String[] {KEY_ROWID, KEY_TITLE,
KEY_BODY, KEY_IMAGE, KEY_DATE_TIME}, null, null, null, null, null);
}
public Cursor fetchReminder(long rowId) throws SQLException {
Cursor mCursor =
mDb.query(true, DATABASE_TABLE, new String[] {KEY_ROWID,
KEY_TITLE, KEY_BODY, KEY_IMAGE, KEY_DATE_TIME}, KEY_ROWID + "=" + rowId, null,
null, null, null, null);
if (mCursor != null) {
mCursor.moveToFirst();
}
return mCursor;
}
// Fetches a single image
public Cursor fetchImage(long rowId) throws SQLException {
Cursor mCursor =
mDb.query(true, DATABASE_TABLE, new String[] {KEY_ROWID,
KEY_IMAGE}, KEY_ROWID + "=" + rowId, null,
null, null, null, null);
if (mCursor != null) {
mCursor.moveToFirst();
}
return mCursor;
}
public boolean updateReminder(long rowId, String title, String body, String path, String reminderDateTime) {
ContentValues args = new ContentValues();
args.put(KEY_TITLE, title);
args.put(KEY_BODY, body);
args.put(KEY_IMAGE, path);
args.put(KEY_DATE_TIME, reminderDateTime);
return mDb.update(DATABASE_TABLE, args, KEY_ROWID + "=" + rowId, null) > 0;
}
}
This is line 316- 336 of my RemindersEditActivity:
//
// Saves the content by communicating with the RemindersDbAdapter.
//
private void saveState() {
String title = mTitleText.getText().toString();
String body = mBodyText.getText().toString();
String path = (String)mImageView.getTag();
SimpleDateFormat dateTimeFormat = new SimpleDateFormat(DATE_TIME_FORMAT);
String reminderDateTime = dateTimeFormat.format(mCalendar.getTime());
// Creates a new reminder if the value is null.
if (mRowId == null) {
long id = mDbHelper.createReminder(title, body, path, reminderDateTime);
if (id > 0) {
mRowId = id;
}
// Updates the reminder if the content is not null.
} else {
mDbHelper.updateReminder(mRowId, title, body, path, reminderDateTime);
}
}
Well, the only constraint you have is “not null”, so try not inserting a column with a null value.
It’s coming from your update, so use the debugger to check all the parameters coming in for a null.
You other option is of course to remove the not null constraint (requires updating/recreating the DB).