public void EmptyDb(string appId)
{
// query to obtain the names of all tables in your database
ICursor c = WritableDatabase.RawQuery("SELECT name FROM sqlite_master WHERE type='table'", null);
List <String> tables = new List <string>();
// iterate over the result set, adding every table name to a list
while (c.MoveToNext())
{
tables.Add(c.GetString(0));
}
// call DROP TABLE on every table name
foreach (String table in tables)
{
String dropQuery = "DELETE FROM " + table;
WritableDatabase.ExecSQL(dropQuery);
}
}
public long SaveText(IEditable Text, Bundle args)
{
long NoteNumber = 0;
string date = DateTime.Now.ToString("dd MMM yyyyг. HH:mm");
ContentValues cv = new ContentValues();
SpannableFactory a = new SpannableFactory();
ISpannable saveText = a.NewSpannable(Text);
Java.Lang.Object[] span = saveText.GetSpans(0, saveText.Length(), Java.Lang.Class.FromType(typeof(ImageSpan)));
if (span != null)
{
for (int i = 0; i < span.Length; i++)
{
saveText.RemoveSpan(span[i]);
}
}
if (Build.VERSION.SdkInt >= BuildVersionCodes.N)
{
cv.Put(COLUMN_TEXT, Html.ToHtml(saveText, ToHtmlOptions.ParagraphLinesIndividual));
}
else
{
cv.Put(COLUMN_TEXT, Html.ToHtml(saveText));
}
cv.Put(COLUMN_EDITINGTIME, date);
if (args != null)
{
WritableDatabase.Update(TEXTTABLE, cv, "_id == ?", new string[] { args.GetString(Databasehelper.COLUMN_ID) });
WritableDatabase.ExecSQL("DELETE from " + CONTENTTABLE + " Where _id == " + args.GetString(Databasehelper.COLUMN_ID)); //Delete old image
NoteNumber = Convert.ToInt32(args.GetString(COLUMN_ID));
}
else
{
long id = 1;
cursor = WritableDatabase.RawQuery("Select _id from " + Databasehelper.TEXTTABLE + " ORDER BY _id DESC LIMIT 1", null);
if (cursor.MoveToFirst())
{
id = cursor.GetLong(cursor.GetColumnIndex("_id"));
cursor.Close();
id++;
}
cv.Put(COLUMN_ID, id);
WritableDatabase.Insert(TEXTTABLE, null, cv);
NoteNumber = id;
}
Java.Lang.Object[] spans = Text.GetSpans(0, Text.Length(), Java.Lang.Class.FromType(typeof(ImageSpan)));
//Insert Image in Database
if (spans != null)
{
for (int i = 0; i < spans.Length; i++)
{
int start = Text.GetSpanStart(spans[i]);
int end = Text.GetSpanEnd(spans[i]);
string source;
source = Text.ToString().Substring(start + 1, end - start - 2);
SaveBitmapBase(NoteNumber, source, start, end, ((BitmapDrawable)((ImageSpan)spans[i]).Drawable).Bitmap);
}
}
return(NoteNumber);
}