react-native-sqlite-storage How to open the specified directory file? - sqlite

Question

my db in: android\app\src\main\assets\app.db
The way i tried:
open() {
SQLiteStorage.DEBUG(true);
SQLiteStorage.openDatabase({
name: 'file:///android_asset/app.db',
})
.then(() => {
console.info('');
})
.catch(err => {
console.warn(err);
});
}
But error:
How can i do this?

Answer 1

run ok!
open() {
SQLiteStorage.DEBUG(true);
SQLiteStorage.openDatabase({
name: 'app.db', // android/app/src/main/assets/app.db
})
.then(() => {
console.info('');
})
.catch(err => {
console.warn(err);
});
}

Answer 2

In react-native-cli:
1- It is convenient first of all to make sure that the database exists in the documents directory, with rn-fetch-blob you can list the documents that are in a directory like this:
import RNFetchBlob from 'rn-fetch-blob';
let dirs = RNFetchBlob.fs.dirs;
const documentPath = dirs.DocumentDir;
const externalZipPath = dirs.DCIMDir;
RNFetchBlob.fs.ls (documentPath) .then ((files) => {
console.log (files)
})
If you do not carry out this step, you can set that a basic database is being created and opened as it does not find any with that name.
You can also open the database from android studio:
When Launch succeeded:
In Device File Explorer> data> data> com.nameofyourapp> databases
You can also click on the bottom tab of android studio 'Database inspector' to see the database changes in real time.
2- Once you are sure that a database already exists in that directory:
To open the database in directories inside the cell phone but outside your project:
"If your folder is not in app bundle but in app sandbox i.e. downloaded from some remote location"
let openDbExample = () => {
let errorCB = (err) => {
console.log ("SQL Error:" + err);
}
let successCB = () => {
db.transaction ((tx) => {
tx.executeSql (
`SELECT * FROM name_column_table LIMIT 10`, [], (tx, results) => {
var len = results.rows.length;
for (let i = 0; i <len; i ++) {
let row = results.rows.item (i);
console.log (row);
}
})
})
}
if (Platform.OS === 'ios') {
db = SQLite.openDatabase ({name: "example_data_base.db", location:
'Documents'}, successCB, errorCB);
}
else {
db = SQLite.openDatabase ({name: "example_data_base.db", readOnly: true,
location: "default", createFromLocation: 2}, successCB, errorCB)
}
}