android-sqlite

问题 If user logout from the app, i'm clearing data from tables one by one using @Query("DELETE FROM tableName") Then i'm trying to clear the sqlite_sequence for all table one by one using below code. database = Room.databaseBuilder(getApplicationContext(), AppDatabase.class, DatabaseMeta.DB_NAME) .build(); database.query("DELETE FROM sqlite_sequence WHERE name = ?", new Object[]{"tableName"}) Unfortunately clearing sqlite_sequence is not working. So if the user login again, then the starting

问题 Using SqliteOpenHelper, I can rely on the onCreate() method to initialize some database work if the database is created for the first time. Also, using the onUpdate() method, I can easily detect if the user has an older version of the DB and I can update it easily. Does Room support alternative methods to use? 回答1: 1. SQLiteOpenHelper.onCreate YES, there is Callback class for that. You can add Callback to RoomDatabase.Builder like this Room.databaseBuilder(getApplicationContext(), MyDb.class,

问题 Can you help my? I have created and published the app on Google play store that contains a database, I have tested it on different android phones. My app works perfect on android version (Android 10,8,5 etc...) except on Android 9, do you know how can I fix that problem? I find that problem on Huawei Smart Z, Honor P20, Samsung Y6,Xiaomi Mi. Play store console says that my app can run on that models. I am beginner in app development. This happening on mine Huawei Smart: when I install the app

问题 I am trying to add data to SQLite database in android, But I am getting error, "java.util.MissingFormatArgumentException: Format specifier: s". I tried to figure out the problem but I can't find it. Button OnClickListener to add data to database. addToCart.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { new Database(getBaseContext()).addToCart(new Order( foodId, foodItem.getName(), quantity.getNumber(), foodItem.getPrice(), foodItem.getDiscount(),

问题 I am trying to add data to SQLite database in android, But I am getting error, "java.util.MissingFormatArgumentException: Format specifier: s". I tried to figure out the problem but I can't find it. Button OnClickListener to add data to database. addToCart.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { new Database(getBaseContext()).addToCart(new Order( foodId, foodItem.getName(), quantity.getNumber(), foodItem.getPrice(), foodItem.getDiscount(),

问题 I am trying to add data to SQLite database in android, But I am getting error, "java.util.MissingFormatArgumentException: Format specifier: s". I tried to figure out the problem but I can't find it. Button OnClickListener to add data to database. addToCart.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { new Database(getBaseContext()).addToCart(new Order( foodId, foodItem.getName(), quantity.getNumber(), foodItem.getPrice(), foodItem.getDiscount(),

问题 i am trying to insert array values into some table for sqlite. my arrays values are not inserted. i am strucked here that was i tried can you guide me in correct way here i am getting the response from axion json output. response.zonedetails is a array. for (var i = 0; i < response.zoneDetails.length; i++){ console.log('hi i am '); console.log('for loop log',response.zoneDetails[i]); var zoneNmae = response.zoneDetails[i].zonename; var parentZoneId = response.zoneDetails[i].parentzoneid; var

问题 I have implemented android database with sqlite and using content provider. But the data in my database is not encrypted. Is there any best practice to implement secure database for android device? I mean not just encrypt but also any Technics that can improve security to my apps. 回答1: If by "secure database" you mean "a database whose data is encrypted via a passphrase that you get from the user", I recommend SQLCipher for Android. 来源： https://stackoverflow.com/questions/20907182/best

问题 I have implemented android database with sqlite and using content provider. But the data in my database is not encrypted. Is there any best practice to implement secure database for android device? I mean not just encrypt but also any Technics that can improve security to my apps. 回答1: If by "secure database" you mean "a database whose data is encrypted via a passphrase that you get from the user", I recommend SQLCipher for Android. 来源： https://stackoverflow.com/questions/20907182/best

问题 I am new in developing android app, I want to display the username after successfully login in the navigation drawer. My question is how to fetch only the username from sqlite database and display it in textView. See the picture This is my codes so far, my DatabaseHelper public class DatabaseHelper extends SQLiteOpenHelper{ public static final String DATABASE_NAME = "Users.db"; public static final String TABLE_NAME = "users_table"; private static final int DATABASE_VERSION = 1; private static