I need to read user input (numberdecimal) and convert that input to double format. My app keep crashing. I am trying to display user input in textView

Question

Trying to read input and then display it in textview and utilize that user input. I am not sure how to read user input and use that input it could be string or number or numberdecimal type. *

<EditView
        android:id="@+id/editText1"
        android:layout_width="368sp"
        android:layout_height="35sp"
        android:layout_marginTop="73dp"
        android:background="#9E9E9E"
        android:hint="Enter Initial Bill Total"
        android:gravity="center_vertical|center_horizontal"
        android:ems="10"
        android:inputType="numberDecimal"
        android:textSize="32dp"
        android:layout_marginLeft="8dp"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="TextView"
        android:layout_marginTop="110dp"
        app:layout_constraintTop_toBottomOf="@+id/editText1"
        android:layout_marginLeft="163dp"
        app:layout_constraintLeft_toLeftOf="parent" />

* *

public class MainActivity extends AppCompatActivity {
    double d;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
    public void display(int score) {
        EditText mEdit   = (EditText)findViewById(R.id.editText1);
        String value = mEdit.getText().toString();
        d = Double.parseDouble(value);
    }
    private void displaytext(double number) {
        TextView quantityTextView = (TextView) findViewById(R.id.textView);
        quantityTextView.setText("" + number);
    }
}

*

Can you please be more specific !, You didn't even call that methods and there is score parameter which has no use. — maysara, Jun 11 '17 at 00:53

score 0 · Answer 1 · answered Jun 11 '17 at 00:16

0

Try to obtain the text value of the double number before set text in the textview.

Anyway, you should add the error messages from Android.

answered Jun 11 '17 at 00:16

Carmen

181
7

score 0 · Answer 2 · answered Jun 11 '17 at 00:44

0

Firstly your app's xml should have used EditText instead of EditView widget that is the reason your app was crashed and you are not triggered the display method, I could suggest that add one button to the bottom of the layout and try to trigger display method by it.

answered Jun 11 '17 at 00:44

aydinugur

1,208
2
14
21

I realized that. Appreciate it. Still have not figured out how to read users decimal input and store in variable. – Ocyrus Jun 11 '17 at 00:49
Cannot read user's input directly from number (i.e int, double) but you can read as **Text** and convert it what you need to get before store it, hope this is clear. – aydinugur Jun 11 '17 at 00:54

I need to read user input (numberdecimal) and convert that input to double format. My app keep crashing. I am trying to display user input in textView

2 Answers2