Programação de dispositivos móveis AVA1

Prévia do material em texto

Universidade Veiga de Almeida
Programação de dispositivos móveis AVA1
Prof. Claudio Fico Fonseca
Nova Iguaçu, Rio de Janeiro
2024.1
Procedimentos para elaboração do TD
Crie um projeto no Android® Studio e desenvolva a aplicação. Prepare um
documento em Word com uma capa (apresentando a instituição, o curso, a
disciplina, o aluno e o professor), uma introdução, o conteúdo com os códigos
da tela (código XML da View) e os códigos de programação (códigos Java®
da Controller), a conclusão e a bibliografia.
Realize o envio da tarefa incluindo o arquivo em Word (ou em PDF).
1.Interface em XML
2. MainActivity.java
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;
public class MainActivity extends AppCompatActivity {
private EditText editTextA1;
private EditText editTextA2;
private EditText editTextA3;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
editTextA1 = findViewById(R.id.editTextA1);
editTextA2 = findViewById(R.id.editTextA2);
editTextA3 = findViewById(R.id.editTextA3);
Button buttonCalcularMedia = findViewById(R.id.buttonCalcularMedia);
buttonCalcularMedia.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
double notaA1 =
Double.parseDouble(editTextA1.getText().toString());
double notaA2 =
Double.parseDouble(editTextA2.getText().toString());
double notaA3 =
Double.parseDouble(editTextA3.getText().toString());
double media = (notaA1 + notaA2 + notaA3) / 3;
Toast.makeText(MainActivity.this, "A média é: " + media,
Toast.LENGTH_SHORT).show();
}
});
}
}
Java Controler
Bibliografia
● https://www.baeldung.com/java-ternary-operator
● https://stackoverow.com/questions/49982644/how-to-check-if-
edittext-input-typenumber-is-null
● https://stackoverow.com/questions/1109022/how-do-you-close-hide-
the-android-soft-keyboard-programmatically
● https://stackoverow.com/questions/27976554/operator-cannot-be-
applied-to-android-widget-edittext-int
● https://stackoverow.com/questions/22828986/concatenate-2-strings-
in-android
https://stackoverow.com/questions/49982644/how-to-check-if-
https://stackoverow.com/questions/49982644/how-to-check-if-
https://stackoverow.com/questions/49982644/how-to-check-if-
https://stackoverow.com/questions/49982644/how-to-check-if-
https://stackoverow.com/questions/49982644/how-to-check-if-
https://stackoverow.com/questions/49982644/how-to-check-if-
https://stackoverow.com/questions/49982644/how-to-check-if-
https://stackoverow.com/questions/49982644/how-to-check-if-
https://stackoverow.com/questions/49982644/how-to-check-if-