我有这个：
-std=c++11作为我的add方法，正如我追踪它，成功添加了记录。但当我尝试使用下面的代码获取我的注释时， public void addNewNote(Note n) {
ContentValues values = new ContentValues();
values.put(COLUMN_TITLE, n.getNote_title());
values.put(COLUMN_TEXT, n.getNote_text());
values.put(COLUMN_FK, n.getNote_ForeignKey()); //this column is integer type
values.put(COLUMN_PT, String.valueOf(n.getNote_PersonType())); //this column is char type
SQLiteDatabase db = this.getWritableDatabase();
db.insert("tbl_Notes",null, values);
}
始终返回null，findNote始终为0.
cnt这是我的public Note findNote(int note_id){
String query = "select * from tbl_Notes"; // where " + COLUMN_ID + " = " + note_id;
SQLiteDatabase db = this.getWritableDatabase();
Cursor cursor = db.rawQuery(query, null);
int cnt = cursor.getCount();
Note N = new Note();
if (cursor.moveToFirst()) {
cursor.moveToFirst();
N.setNote_title(cursor.getString(1)); //title column
N.setNote_text(cursor.getString(2)); //text body column
N.setNote_ForeignKey(Integer.parseInt(cursor.getString(3))); //foreign key column
N.setNote_PersonType(cursor.getString(4).charAt(0)); //person type column
cursor.close();
}else {
N = null;
}
return N;
}
，它会触发onClick：
addNewNote我做错了什么？！