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    <p>Placement of some of your code was wrong. I have attempted to fix it. See if the following works for you:</p> <pre><code>package com.example.MyProject; import android.os.Bundle; import android.app.Activity; import android.text.Editable; import android.view.FocusFinder; import android.view.Menu; import android.widget.EditText; public class MainActivity extends Activity { private android.widget.EditText editText1; private android.widget.EditText editText2; private android.widget.TextView resultsText; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); editText1 = (EditText)findViewById(R.id.textView13); editText2 = (EditText)findViewById(R.id.textView15); resultsText = (android.widget.TextView)findViewById(R.id.textView16); android.text.TextWatcher inputTextWatcher = new android.text.TextWatcher() { public void afterTextChanged(android.text.Editable s) { calculateResult(); } public void beforeTextChanged(CharSequence s, int start, int count, int after){} public void onTextChanged(CharSequence s, int start, int before, int count){} }; editText1.addTextChangedListener(inputTextWatcher); editText2.addTextChangedListener(inputTextWatcher); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.main, menu); return true; } private void calculateResult() throws NumberFormatException { Editable editableValue1 = editText1.getText(); Editable editableValue2 = editText2.getText(); double value1 = 0.0, value2 = 0.0, result; if (editableValue1 != null) value1 = Double.parseDouble(editableValue1.toString()); if (editableValue2 != null) value2 = Double.parseDouble(editableValue2.toString()); result = ((0.5 * value1) / 6.1) * value2; resultsText.setText(String.valueOf(result)); } } </code></pre>
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    1. USVikram
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    1. COthank you. that took care of the errors, but when i try to add a number in either of the edittext fields, the app crashes.
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      1. USNuckinFutz
    2. CO@user1232402 Can you post the updated code and Logcat output?
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    3. CO@user1232402 Also, change `if (editableValue1 != null)` to `if (editableValue1 != null && !editableValue1.toString().equals(""))`. Similarly, change `if (editableValue2 != null)` to `if (editableValue2 != null && !editableValue2.toString().equals(""))`.
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

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