android-sqlite

问题 I am working on a chat application and in chat we are getting lots of update from server. And we are also saving the updates into the local SQLite database file. Can someone suggest me, after every single insertion/update, should we close the database or we should close the database when it is actually needed ? 回答1: Closing the connection throws away the page cache, and requires that the schema version is checked and the entire schema is re-parsed the next time it is opened. In most apps,

问题 How to fetch this Two Json Response and save the json response in SQLite. Hope you will guide me how to fetch this Json object inside a Json Array inside an Object My problem is a cannot fetch the 2nd json response. I noticed that only the 1st response was returned Login response in Logcat D/RegisterActivity: Login Response: {"error":false,"user":{"br_code":12,"mem_id":13,"username":"novalyn","email":"gsac_tabaco@yahoo.com","created_at":"2016-07-22 09:05:21"}}{"error":false,"sl_summ":[{"sl

问题 OK, I was adviced to make a new thread for my question. I am using imported SQLite database. Anyway, I have made two themed dialogs for right and wrong answers, and I want to show them when right or wrong answer is clicked. Here's the code in my activity, cut out parts: private class Answer { public Answer(String opt, boolean correct) { option = opt; isCorrect = correct; } String option; boolean isCorrect; } final OnClickListener clickListener = new OnClickListener() { public void onClick

问题 This is written by me. There is something wrong with this code. When I debugged the code it is terminating in this file.So help is something which I need badly. data is not going into the database, I'm not able to retrieve data from database. Don't know whether the database, table create or not. package com.Prasad.formdetails; import android.content.ContentValues; import android.content.Context; import android.database.Cursor; import android.database.sqlite.SQLiteDatabase; import android

问题 I have an Android application where the app should work offline. In the app when the records are been created during offline mode they are stored in the local database(sqlite), when the internet connection is available the records that were been created during offline should sync with parse. How can I do it in Android? 回答1: Simple while run a background service to check whether your mobile is connected to internet or not,then get the data from your Local Database in one list and then Parse

问题 The android documentation describes "EnableWriteAheadLogging" over here: http://developer.android.com/reference/android/database/sqlite/SQLiteDatabase.html#enableWriteAheadLogging() "This method enables parallel execution of queries from multiple threads on the same database" However, according to the SQLite documentation: https://www.sqlite.org/threadsafe.html there are two kinds of multithreading for SQLite: "Serialized" and "Mulit-thread". Which one is used when using

问题 How to get specific values form columns "Condition" and get the latitude & Longitude. My SQLITE database columns are: //Table Columns names private static final String KEY_TID = "id"; public static final String KEY_TreeID = "treeid"; public static final String KEY_TCONDITION = "condition"; public static final String KEY_TLATITUDE = "latitude"; public static final String KEY_TLONGITUDE = "longitude"; private static final String CREATE_TABLE = "CREATE TABLE if not exists " + TABLE_TREE + "(" +

问题 i have an android application that retrieve data from sqlite database and display these data in a listView that extend a BaseAdapter. in this app i have images in the drawable folder and i have in the sqlite a field that contain name of these images. my question is how to retrieve these data and display it in a listView ?? i read this tutorial :(http://www.androidhub4you.com/2012/09/hello-friends-today-i-am-going-to-share.html). my question is there any other way to do this ?? i will

问题 When I query my database I keep getting an error saying SQLException: no such column and i do not understand why when my query looks just fine Cursor nameCursor = context.getContentResolver().query(StatusList.STATUS_URI,new String[] {StatusList.STATUS_NAME,StatusList.STATUS_PERMISSIONS,StatusList.STATUS_ECM2ID} ,StatusList.STATUS_TYPE+"=1"+" AND "+StatusList.STATUS_NAME+"="+incidentCursor.getString(0),null,null); here is the full error 08-01 15:39:59.104: W/System.err(8623): android.database

问题 I have two separate android apps, AppA and AppB. AppA will launch AppB (which is a game app). After the user is done playing the game (AppB) and click the logout button, it will send the game records (multiple string arrays) back to AppA. Just like to ask, how can I get AppB to send multiple string arrays to AppA at one go ? Thanks. Eg. AppB is supposed to send these string arrays to AppA: Game Record :12345,Tan Ah Huay,2x2,living_room,normal,3,100,N,1 Mar 2017 5:11:31 pm,2 Game Record :12345