Notes

vize final hesaplama
public class MainActivity extends AppCompatActivity {
EditText txtad;
Spinner spinnervize,spinnerfinal;
Button btnkaydet;

private String[]
vizee={"10","20","30","40","50","60","70","80","90"," 100"};
private String[]
finall={"10","20","30","40","50","60","70","80","90", "100"};
private Spinner spinnerfinall;
private Spinner spinnervizee;
private ArrayAdapter<String> dataAdaptervize;
private ArrayAdapter<String> dataAdapterfinal;
int bn;
int vizeNotu;
int finalNotu;
@Override
protected void onCreate(Bundle
savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
txtad=findViewById(R.id.txtad);
spinnervize=findViewById(R.id.spinnervize);
spinnerfinal=findViewById(R.id.spinnerfinal);
btnkaydet=findViewById(R.id.btnkaydet);
spinnervize=(Spinner)
findViewById(R.id.spinnervize);
spinnerfinal=(Spinner)
findViewById(R.id.spinnerfinal);
dataAdaptervize = new

ArrayAdapter<String>(this,
android.R.layout.simple_spinner_item, vizee);
dataAdapterfinal = new
ArrayAdapter<String>(this,
android.R.layout.simple_spinner_item,finall);

dataAdaptervize.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
dataAdapterfinal.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinnervize.setAdapter(dataAdaptervize);
spinnerfinal.setAdapter(dataAdapterfinal);


btnkaydet.setOnClickListener(new View.OnClickListener() {
@Override public void onClick(View v) {

vizeNotu = Integer.parseInt(spinnervize.getSelectedItem().toString());
finalNotu = Integer.parseInt(spinnerfinal.getSelectedItem().toString());
bn = (int) ((vizeNotu * 0.4) + (finalNotu *0.6));
Intent intent =new Intent( MainActivity.this,Main2Activity.class);
intent.putExtra("ad",txtad.getText().toString());
intent.putExtra("bn",bn);
startActivity(intent);
}


});

}
}


<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity"
tools:layout_editor_absoluteY="25dp">

<EditText
android:id="@+id/txtad"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:ems="10"
android:inputType="textPersonName"
android:text="Name"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />

<Spinner
android:id="@+id/spinnervize"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="18dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/txtad" />

<Spinner
android:id="@+id/spinnerfinal"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="35dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/spinnervize" />

<Button
android:id="@+id/btnkaydet"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="57dp"
android:text="kayıt"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/spinnerfinal" />

</android.support.constraint.ConstraintLayout>


sonuc:


public class Main2Activity extends AppCompatActivity {

TextView txtadsonuc,bntxt;
String ad;
int bn;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
txtadsonuc=findViewById(R.id.txtadsonuc);
bntxt = findViewById(R.id.txdnot);
Bundle intent = getIntent().getExtras();
ad=intent.getString("ad");
bn = intent.getInt("bn");
txtadsonuc.setText(ad);
bntxt.setText((String.valueOf(bn)));
}
}

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Main2Activity">

<TextView
android:id="@+id/txtadsonuc"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="149dp"
android:layout_marginStart="149dp"
android:layout_marginTop="105dp"
android:text="TextView"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />

<TextView
android:id="@+id/txdnot"
android:layout_width="wrap_content"
android:layout_height="18dp"
android:text="TextView"
tools:layout_editor_absoluteX="149dp"
tools:layout_editor_absoluteY="180dp" />
</android.support.constraint.ConstraintLayout>