sqliteopenhelper

sqlite.SQLiteException: near “s”: syntax error: because of apostrophe

由 杀马特。学长 韩版系。学妹 提交于 2021-02-19 07:14:26
问题 The song name that I want to insert it into my table contains a " ' " (apostrophe )so , there is an error when the request is excuted. How can I fix it Cursor pid = mDB.rawQuery("select Id FROM MusicPlayer WHERE "Path ='" + sname + "';", null); I am getting sname runtime so .. sname= /mnt/sdcard/Now Thats What I Call Music 85 [Bubanee]/16 - Let's Get Ready To Rhumble (100% Radio Mix) - PJ & Duncan.mp3 I get below error.. android.database.sqlite.SQLiteException: near "s": syntax error: , while

sqlite.SQLiteException: near “s”: syntax error: because of apostrophe

由 会有一股神秘感。 提交于 2021-02-19 07:13:34
问题 The song name that I want to insert it into my table contains a " ' " (apostrophe )so , there is an error when the request is excuted. How can I fix it Cursor pid = mDB.rawQuery("select Id FROM MusicPlayer WHERE "Path ='" + sname + "';", null); I am getting sname runtime so .. sname= /mnt/sdcard/Now Thats What I Call Music 85 [Bubanee]/16 - Let's Get Ready To Rhumble (100% Radio Mix) - PJ & Duncan.mp3 I get below error.. android.database.sqlite.SQLiteException: near "s": syntax error: , while

onCreate() of RoomDatabase.Callback() was not called after a successful call to .build()

由 雨燕双飞 提交于 2020-12-11 09:02:33
问题 I have created MovieDatabase using Room Persisdent lib. According to the documentation of onCreate() method in RoomDatabase.Callback, onCreate() to be called after the database is created for the first time, and all the tables were created. What happend after I called buildPersistentDB() is, I received logs from MoviesDatabase class, the class that is annotated with @Database, but the logs from onCreate() in RoomDatabase.Callback were never called despite I called: this.mMovieDatabase = this

onCreate() of RoomDatabase.Callback() was not called after a successful call to .build()

由 对着背影说爱祢 提交于 2020-12-11 08:59:47
问题 I have created MovieDatabase using Room Persisdent lib. According to the documentation of onCreate() method in RoomDatabase.Callback, onCreate() to be called after the database is created for the first time, and all the tables were created. What happend after I called buildPersistentDB() is, I received logs from MoviesDatabase class, the class that is annotated with @Database, but the logs from onCreate() in RoomDatabase.Callback were never called despite I called: this.mMovieDatabase = this

onCreate() of RoomDatabase.Callback() was not called after a successful call to .build()

由 試著忘記壹切 提交于 2020-12-11 08:59:24
问题 I have created MovieDatabase using Room Persisdent lib. According to the documentation of onCreate() method in RoomDatabase.Callback, onCreate() to be called after the database is created for the first time, and all the tables were created. What happend after I called buildPersistentDB() is, I received logs from MoviesDatabase class, the class that is annotated with @Database, but the logs from onCreate() in RoomDatabase.Callback were never called despite I called: this.mMovieDatabase = this

How do I delete the file of an Android Room database?

由 限于喜欢 提交于 2020-06-12 07:17:19
问题 I have implemented a room database which is distributed from a resource file using SQLiteAssetHelper the first time the app is started. The database contains game status data so if the Player wants to start all over again, I want to copy again the database file from the resource and overwrite the "local/internal" file. So my idea was to delete the interal db-file so that SQLiteAssetHelper will copy the Initial database from the resource again. Thank you! Kev 回答1: Here's a working example:

SqlLite的工具类SQLiteOpenHelper

由 两盒软妹~` 提交于 2020-04-17 03:59:32
【推荐阅读】微服务还能火多久？>>> package com.zhxjz.map.util; import java.util.List; import org.apache.commons.lang.math.NumberUtils; import android.content.Context; import android.database.Cursor; import android.database.sqlite.SQLiteDatabase; import android.database.sqlite.SQLiteDatabase.CursorFactory; import android.database.sqlite.SQLiteOpenHelper; import com.zhxjz.map.Config; /** * 操作SqlLite的工具类 * * @author caozj * */ public class DBUtil extends SQLiteOpenHelper { private SQLiteDatabase db; public DBUtil(Context context) { this(context, Config.get("db"), null, NumberUtils.toInt(Config .get("dbversion"))

android原生的数据库实现[ContentProvider+SQLiteOpenHelpe...

由 人盡茶涼 提交于 2020-04-10 08:55:57
先吐槽下：最近几周压力老大了，前面我们三个ios开发人员花了一个多月开发的应用要移植到android上，由于应用相对比较复杂，有拖拽排序、离线下载、二维码扫描，而这次，另一个ios开发人员离职，剩下的另一个还没做个android，得由我带，于是，我估计了下开发时间，大约34天，我将计划发给领导，领导却说最多给我15天，我半天没说一个字：*&%￥#%**&⋯⋯&& 哎，出来混的，不管怎样，尽量吧。 这个开发，我们四张表要操作，相对于一般的移动应用，还是比较大的，故数据库实现肯定是整个开发的第一个和至关重要的一步，于是，我整理了下面这个demo。 其实网上有很多比较不错的orm移动开发框架，相对还是比较优秀，可以节省大把的开发时间，但我个人认为，现在这个还不是很稳定，而且，在效率上，我持保守态度，移动开发上， 应相对的少用反射和抽象接口 ，而网络上的一些第三方的框架，却抓住这个大用特用，个人觉得，不大好，另外，采用android原生的数据库实现方案，还有个极大的好处是： 很容易实现产品生态系统，这个是其他的orm所不易达到的 。也即，可以轻而易举地实现我们的几个应用间的数据共享和交互，URI访问即可，从而形成一个生态圈的目的，具体的，就不多说了。 这个demo是一个完整的db操作，但只给出了一个实体的db实现，不过，足以： 程序结构图： 后面的所有db操作

Android Pushing Updates on Play Store

由 ☆樱花仙子☆ 提交于 2020-02-23 09:17:31
问题 I have an app that depends on SQLite for data which is populated by xmls shipped with the app in the assets folder. When you run the app the first time it sets a shared preference config_run = false. then i check if config_run = false then parse the xml and dump the data into db set config_run = true Now i realize that when i have to push an update on Google Play and add more content into the XML. Even though i change the database version from 1 to 2. The import script wont run because shared

SQLiteException near “null”: syntax error: , while compiling: INSERT OR REPLACE INTO

由 独自空忆成欢 提交于 2020-01-25 03:46:06
问题 I am trying to configure a simple DbHelper, and getting an error while executing. The error is: SQLiteException near "null": syntax error: , while compiling: INSERT OR REPLACE INTO I cannot figure out what is the problem? The DbHelper class is: package com.sqlite.test1; import android.content.Context; import android.database.sqlite.SQLiteDatabase; import android.database.sqlite.SQLiteOpenHelper; public class DbHelper extends SQLiteOpenHelper{ public static final int DB_VERSION = 1; public
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