how can i add elements from a DB to a linear layout - android-studio

Question

First of all, sorry if my English is bad cause I'm from Spain.
I create a DB of football players (don't judge, is for school) and I want to show in the linear layout every player I add in the DB.
Here is my main activity:
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button b1 = findViewById(R.id.insertar);
b1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
DataBaseHelper helper = new DataBaseHelper(MainActivity.this);
SQLiteDatabase db = helper.getWritableDatabase();
if (db != null) {
Toast.makeText(MainActivity.this, "Insertado con éxito.", Toast.LENGTH_LONG).show();
db.close();
}
}
});
}
public void add(View view) {
DataBaseHelper helper = new DataBaseHelper(MainActivity.this);
SQLiteDatabase db = helper.getWritableDatabase();
TextView nombreJugador = findViewById(R.id.nombre);
TextView posicionJugador = findViewById(R.id.posicion);
TextView dorsalJugador = findViewById(R.id.dorsal);
if (db != null) {
ContentValues values = new ContentValues();
values.put("nombre", nombreJugador.getText().toString());
values.put("posicion", posicionJugador.getText().toString());
values.put("dorsal", dorsalJugador.getText().toString());
db.close();
}
}
public void changeToShowDB(View v) {
Intent actividad = new Intent(MainActivity.this, MainActivity2.class);
startActivity(actividad);
}
}
And here my other activity in which I have the linear layout and where I want to show the players of the DB.
public class MainActivity2 extends AppCompatActivity {
LinearLayout ll;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
ll = (LinearLayout) findViewById(R.id.linearlayout);
}
public void changeToMain(View v) {
Intent actividad = new Intent(MainActivity2.this, MainActivity.class);
startActivity(actividad);
}
public void submitChoice(View view) {
TextView nombreJugador = findViewById(R.id.nombre);
TextView posicionJugador = findViewById(R.id.posicion);
TextView dorsalJugador = findViewById(R.id.dorsal);
TextView textView = new TextView(this);
textView.setText("text");
ll.addView(textView);
ll.invalidate();
}
}
How could I add the players I just collect from the DB to the linear layout?
First of all, sorry if my English is bad cause I'm from Spain.
I create a DB of football players (don't judge, is for school) and I want to show in the linear layout every player I add in the DB.
Here is my main activity:
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button b1 = findViewById(R.id.insertar);
b1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
DataBaseHelper helper = new DataBaseHelper(MainActivity.this);
SQLiteDatabase db = helper.getWritableDatabase();
if (db != null) {
Toast.makeText(MainActivity.this, "Insertado con éxito.", Toast.LENGTH_LONG).show();
db.close();
}
}
});
}
public void add(View view) {
DataBaseHelper helper = new DataBaseHelper(MainActivity.this);
SQLiteDatabase db = helper.getWritableDatabase();
TextView nombreJugador = findViewById(R.id.nombre);
TextView posicionJugador = findViewById(R.id.posicion);
TextView dorsalJugador = findViewById(R.id.dorsal);
if (db != null) {
ContentValues values = new ContentValues();
values.put("nombre", nombreJugador.getText().toString());
values.put("posicion", posicionJugador.getText().toString());
values.put("dorsal", dorsalJugador.getText().toString());
db.close();
}
}
public void changeToShowDB(View v) {
Intent actividad = new Intent(MainActivity.this, MainActivity2.class);
startActivity(actividad);
}
}
And here my other activity in which I have the linear layout and where I want to show the players of the DB.
public class MainActivity2 extends AppCompatActivity {
LinearLayout ll;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
ll = (LinearLayout) findViewById(R.id.linearlayout);
}
public void changeToMain(View v) {
Intent actividad = new Intent(MainActivity2.this, MainActivity.class);
startActivity(actividad);
}
public void submitChoice(View view) {
TextView nombreJugador = findViewById(R.id.nombre);
TextView posicionJugador = findViewById(R.id.posicion);
TextView dorsalJugador = findViewById(R.id.dorsal);
TextView textView = new TextView(this);
textView.setText("text");
ll.addView(textView);
ll.invalidate();
}
}
How could I add the players I just collect from the DB to the linear layout?