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Android Build an Interactive Story App (Retired) Intents and Multiple Activities Adding a Second Activity

Validation of Fields

If the mNameField field is empty and I try to parse it to the name field below (Clicking the button); my app crashes because of a "null" value. null pointer exception.

How would I encapsulate the activity it in a Try Catch or validation of some kind?

public class MainActivity extends AppCompatActivity { private EditText mNameField; private Button mStartButton;

protected void onCreate(Bundle savedInstanceState) {
    mNameField = (EditText) findViewById(R.id.nameEditText);
    mStartButton = (Button) findViewById(R.id.startButton);
    mStartButton.setOnClickListener(new View.OnClickListener() {
        public void onClick(View view) {
            String Name = mNameField.getText().toString();
private void startStory()
    Intent intent = new Intent(this, StoryActivity.class);