android.database.sqlite.SQLiteDiskIOException#android.database.sqlite.SQLiteCantOpenDatabaseException源码实例Demo

private boolean existsDatabase()
{
	SQLiteDatabase database = null;
	boolean isExist = true;

	try
	{
		database = SQLiteDatabase.openDatabase(DB_PATH, null, SQLiteDatabase.OPEN_READONLY);
	}
	catch (SQLiteCantOpenDatabaseException e)
	{
		// No database
		Log.d("Database", "Database not found!");
		isExist = false;
	}
	finally
	{
		if ( database != null )
			database.close();
	}

	return isExist;
}
 

@NonNull
@VisibleForTesting
/*package*/ SQLiteDatabase getDatabase() {
    if (mInjectedDatabase != null) {
        return mInjectedDatabase;
    } else {
        try {
            return mDbHelper.getWritableDatabase();

        } catch (SQLiteCantOpenDatabaseException e) {
            CAT.e(e);

            // that's bad, delete the database and try again, otherwise users may get stuck in a loop
            new JobStorageDatabaseErrorHandler().deleteDatabaseFile(DATABASE_NAME);
            return mDbHelper.getWritableDatabase();
        }
    }
}
 

@Override
public SQLiteDatabase getReadableDatabase() {
    throw new SQLiteCantOpenDatabaseException();
}
 

@Override
public SQLiteDatabase getWritableDatabase() {
    throw new SQLiteCantOpenDatabaseException();
}