Всем привет!
Поискал свою тему на форуме, но ничего подобного не нашел.
Помоги отловить ошибку и решить ее пожалуйста.
Суть проблемы в том, что приложение не запускается на на эмуляторе с Android P. На остальных ниже - работает.
Ошибка:
Caused by: android.database.sqlite.SQLiteException: no such table: authors (code 1 SQLITE_ERROR): , while compiling: select a.authorName, Count(p._id) from authors a, poem p where a._id=p.authorID group by a.authorName
Классы, в которых выдает ошибку:
...
public class MainActivity extends AppCompatActivity {
private ListView lvAuthorsAndPoems;
private AuthorsAdapter authorsAdapter;
private List<Authors> authorsList;
private DatabaseHelper mDBHelper;
//private AdView adView;
private Context mContext;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setTitle("Poems");
lvAuthorsAndPoems = (ListView) findViewById(R.id.lvAuthorsAndPoems);
mDBHelper = new DatabaseHelper(this);
// Check exists database
final File database = getApplicationContext().getDatabasePath(DatabaseHelper.DBNAME);
deleteDatabase(DatabaseHelper.DBNAME);
if (!database.exists()){
mDBHelper.getReadableDatabase();
// Copy db
if(copyDatabase(this)){
//Toast.makeText(this, "",Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(this, "Ошибка обновления БД!",Toast.LENGTH_SHORT).show();
return;
}
}
// Get Members list when db exists
//poemList = mDBHelper.getListPoem();
authorsList = mDBHelper.getAuthorPoems();
// Initialize adapter
authorsAdapter = new AuthorsAdapter(this, authorsList);
// Set adapter for listview
lvAuthorsAndPoems.setAdapter(authorsAdapter);
lvAuthorsAndPoems.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int position, long l) {
Intent intent = new Intent(MainActivity.this, AuthorPoemsActivity.class);
intent.putExtra("authorName", authorsList.get(position).getAuthorName());
startActivity(intent);
}
});
}
// COPY DATABASE METHOD
private boolean copyDatabase(Context context){
try {
InputStream inputStream = context.getAssets().open(DatabaseHelper.DBNAME);
String outFileName = DatabaseHelper.DBLOCATION + DatabaseHelper.DBNAME;
/*
DatabaseHelper helper = new DatabaseHelper(this);
SQLiteDatabase database = helper.getWritableDatabase();
String outFileName = database.getPath();
database.close();
*/
OutputStream outputStream = new FileOutputStream(outFileName);
byte[] buff = new byte[1024];
int length = 0;
while ((length = inputStream.read(buff)) > 0){
outputStream.write(buff,0, length);
}
outputStream.flush();
outputStream.close();
inputStream.close();
Log.v("DBCopyEvent","DB Copied!");
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
}
Класс для БД:
public class DatabaseHelper extends SQLiteOpenHelper {
public static final String DBNAME = "poems.db";
public static String DBLOCATION="";
public static int DBVERSION=3;
private Context mContext;
public SQLiteDatabase mDatabase;
public DatabaseHelper (Context context){
super(context, DBNAME, null ,DBVERSION);
if (android.os.Build.VERSION.SDK_INT >= 17)
DBLOCATION = context.getApplicationInfo().dataDir + "/databases/";
else
DBLOCATION = "/data/data/" + context.getPackageName() + "/databases/";
this.mContext = context;
}
public void openDatabase(){
String dbPath = mContext.getDatabasePath(DBNAME).getPath();
if (mDatabase != null && mDatabase.isOpen()){
return;
}
mDatabase = SQLiteDatabase.openDatabase(dbPath,null,SQLiteDatabase.OPEN_READWRITE);
this.getWritableDatabase();
}
public void closeDatabase(){
if (mDatabase != null){
mDatabase.close();
}
}
public List<Authors> getAuthorPoems(){
Authors ap = null;
List<Authors> authorsList = new ArrayList<>();
openDatabase();
Cursor cursor = mDatabase.rawQuery("select a.authorName, Count(p._id) from authors a, poem p where a._id=p.authorID group by a.authorName",null);
cursor.moveToFirst();
while (!cursor.isAfterLast()){
ap = new Authors(cursor.getString(0),cursor.getString(1));
authorsList.add(ap);
cursor.moveToNext();
}
cursor.close();
closeDatabase();
return authorsList;
}
@Override
public void onCreate(SQLiteDatabase sqLiteDatabase) {
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
}
}
Напомню еще раз, что такая ошибка только на Android P, на остальных все нормально.
Средний
Простой
