android-sqlite

问题 I want to save to db some strings with image. Image can be taken from gallery or user can set the sample one. In the other activity I have a listview which should present the rows with image and name. I'm facing so long this problem. It occurs when I wanna display listview with the image from gallery, If the sample image is saved in the row everything works ok. My problem is similar to this one: how to save image taken from camera and show it to listview - crashes with "IllegalStateException"

问题 I need to set adapter values in a listview. In it, I created an ArrayList to get data from SQLite DB and I need to pass it to a listView with 3 columns. Here I mentioned my codes. Where do I need to call my data Stored in local Db? DBHelper.java public ArrayList<SQLPojo.UserDetails> getUserDetails() { ArrayList<SQLPojo.UserDetails> aUserDetailList = new ArrayList<SQLPojo.UserDetails>(); try { String aQuery = "SELECT * FROM " + TABLE_NAME; Cursor aCursor = mySqliteDataBase.rawQuery(aQuery,

问题 I want to copy the data from CSV file to SQLite file for my android application.SQLite table structure i.e. the columns are different than the CSV file columns. There are more columns in the CSV file. I am trying to use DB Browser For SQLite software. Is it possible to copy data through these this Application or should I be writing some code to do that? Can anyone please suggest? 回答1: I would like to suggest using SQLite Studio for importing CSV data and create an SQLite database file from

问题 I am creating app in which 1.take photo from camera. 2.save its URI in database 3.using cursor and adaptor i retrieve image uri and sets in grid view. i am getting error as " error opening trace file: No such file or directory (2)" also i cant see any folder formed with name "my image" Main activity public class MainActivity extends ActionBarActivity { private static final int CAMERA_CAPTURE_IMAGE_REQUEST_CODE = 100; final int MEDIA_TYPE_IMAGE=2; Button click; ImageView image; Uri fileuri;

问题 I am creating app in which 1.take photo from camera. 2.save its URI in database 3.using cursor and adaptor i retrieve image uri and sets in grid view. i am getting error as " error opening trace file: No such file or directory (2)" also i cant see any folder formed with name "my image" Main activity public class MainActivity extends ActionBarActivity { private static final int CAMERA_CAPTURE_IMAGE_REQUEST_CODE = 100; final int MEDIA_TYPE_IMAGE=2; Button click; ImageView image; Uri fileuri;

问题 I want to store a video in sqlite database. P.S. I do not want to store the path but the actual video contents. I have converted the video in byte array and stored byte array in sqlite database. Upon retrieval bytearray is being converted into File. But video is not playing. Please help. 回答1: I want to store a video in sqlite database. P.S. I do not want to store the path but the actual video contents. Unless the videos are very short and take up little space (say up to 200k each, perhaps 1

问题 My SQLiteDatabase is giving me some trouble. When the user closes the app, in onPause() an AsyncTask begins to save the data. I don't know if this is the best way to do it, but the way I have done it is, first the database deletes all of the existing data (it's not too much, maybe 20-30 values between two tables), then adds the fresh data back into the database. The deleteAll() method works just fine, but when it tries to add each item, it fails after the 6th one. This is my doInBackground()

问题 So when I launch the app I get the fatal exception main saying that there is no empty constructor. Then when I add the empty constructor it gives me that "The constructor SQLiteOpenHelper() is undefined" error. This is my first app ever so I have no clue what to do. Here's the code: package com.example.lightalarmclock; import android.app.Activity; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.database.sqlite

问题 I want to upload my sqlite DB file to DropBox. But before that I need to get the sqlite Db file in code. How can I do this on any device? I checked on this link, and it says that the user needs root permissions to access the database. So in short: How can I access my sqlite database with non rooted devices? eg File f = new File("path_to_db_file"); If that approach is impossible, how can I save my app database in a place that I will be able to gain access to it? Please let me know if I can

问题 I don't know where are my mistakes. I am trying to store the lyrics.db file in my DB_PATH when the database doesn't exist and my checkDatabase method returns false, or my DB is obsolete. However, I get the following :- E/SQLiteLog: (14) cannot open file at line 36356 of [605907e73a] (14) os_unix.c:36356: (2) open(/data/user/0/id.ac.umn.project_uts_mobile_16862/filesid.ac.umn.project_uts_mobile_16862/databases/lyrics.db) - (1) Process ts_mobile_16862 : Pid (12455) Uid (10196) Euid (10196) Gid