android-sqlite

问题 Hi I am trying to insert data into database using EditText and Button I have created. I am stuck at Activity part of the code. I am unable to proceed how to write the Onclick action part for Button and EditText part Please help me. I am new to android DBAdapter.java package com.example.database1; public class DBAdapter { public static final String KEY_ROWID = "_id"; public static final String KEY_ISBN = "isbn"; public static final String KEY_TITLE = "title"; public static final String KEY

问题 I have a problem after upgraded to Android Studio 3.0 canary 1 from Android Studio 2.3 db.execSQL("CREATE TABLE IF NOT EXISTS " + Contract.COUNTRY_PATH + " (" + Contract.Country._ID + " INTEGER AUTO INCREMENT , " + Contract.Country.COLUMN_CITY_ID + " INTEGER PRIMARY KEY," + Contract.Country.COLUMN_COUNTRY_NAME + " TEXT," + Contract.Country.COLUMN_SUNRISE + " INTEGER," + Contract.Country.COLUMN_SUNSET + " INTEGER) "); It shows an error. '(',')',<column constraint> or comma expected ,got 'AUTO'

问题 I've been trying to insert data into my database but each time it crashes ("Unfortunatelty, has stopped.) each time when I try to insert data into my SQLite database. Hope some kind android programmer can help look through my code sample below. This is my DbHelper java file used to create my table. /** Name of the database file */ private static final String DATABASE_NAME = "beat_that.db"; /** Name of the table */ public final static String TABLE_WORKOUT_SETS = "workout_sets"; // Common

问题 While this code works, but the blank screen appears until doInBackground is complete package com.vaishnavismeclass.english.naalaayiradivyaprabandam; import android.app.ProgressDialog; import android.content.ContentValues; import android.content.Context; import android.content.res.Resources; import android.database.Cursor; import android.database.SQLException; import android.database.sqlite.SQLiteDatabase; import android.database.sqlite.SQLiteOpenHelper; import android.os.AsyncTask; import

问题 I'm using prepopulated sqlite database in my app and i'm trying to update my database in my android application but the onUpgrade method doesn't get called when I increment the version number. i tried googling, searched on stackoverflow but nothing helped. if I uncomment this.getReadableDatabase() in my constructor the onUpgrade method gets called but I can't query the data and returns error. Here is my code. public class DatabaseHelper extends SQLiteOpenHelper { private static final String

问题 I have a lot of data that is stored in a CSV file (about 20,100 rows), which I need to insert into a sqlite database. This insert is taking very long to complete. What is the fastest way to insert this data? 回答1: As you have suggested, number of rows are huge I will recommend not to use AsyncTask , as its not tied to your Activity lifecycle i.e if you activity which started it dies, it doesnt mean AsyncTask dies as well, so if you try initiate a AsyncTask and somehow if your activity dies e.g

问题 so I want to make an app that lists foods that I have stored in an already existing SQLite database I created. I have my foodDB.db file in the /assets/databases folder. I know I must use a DatabaseHelper class. I have done my fair share of research, I have looked at plenty of stackoverflow posts and youtube tutorials but none satisfy my critera of populating a ListView from an existing database in the asset folder. I find them very confusing and not clear. Could someone please clearly explain

问题 This may turn out as a lame question, but I am a beginner and don't seem to understand the behavior of my app. I have a SQLite data base, and a list view in the main activity. In the list view I display the List no.(row id) and other details. and on pressing the list item, a new activity opens up which displays the details in a textview and has 2 image buttons for delete and sync. The app works just fine until I delete any entry. Once I delete any entry the row id on the listview doesn't seem

问题 I want to convert .sql file to .sqlite . i got the script from here link I am trying to execute script like this ./mysql2sqlite country.sql | sqlite3 mysqlite3.db but getting error like this bash: ./mysql2sqlite: No such file or directory when I tried like this sh mysql2sqlite country.sql | sqlite3 mysqlite3.db I am getting error as sh: 0: Can't open mysql2sqlite I am not getting script is wrong or the way i am doing is wrong ? is there any way i can do it. 来源： https://stackoverflow.com

问题 I am using the SQLiteAssetHelper class to manage an SQLite database in my app. To do this I have followed the instructions on how to use SQLiteAssetHelper on GitHub, which is to add compile 'com.readystatesoftware.sqliteasset:sqliteassethelper:+' to my dependencies in my build.gradle file. However, when I do this, android studio gives me a yellow warning, which says avoid using + in version numbers; can lead to unpredictable and unrepeatable builds Sounds ominous *Gulp* but this GitHub page,