Home / Questions / 277717
Accepted
Ludiras
Asked: 2020-07-10 05:38:23 +0800 CST 2020-07-10 05:38:23 +0800 CST

EditText with line break stops being empty

  • 772

You see, I have the following code:

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    ButterKnife.bind(this);

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

            String texto = textTranslate();

            if (etBeforeTranslate.getText().toString().isEmpty()) {

                ivLogo.setImageResource(R.drawable.logotipoangry);
                Toast.makeText(MainActivity.this, "¡Ay que agobio! Intridici il tixti, anda", Toast.LENGTH_SHORT).show();

            } else {

                Translates = FirebaseDatabase.getInstance().getReference("Translates");
                registerTranslates();
                ivLogo.setImageResource(R.drawable.logotipo);
                Intent intent = new Intent(MainActivity.this, TranslateActivity.class);
                intent.putExtra("texto", texto);
                startActivity(intent);

            }

        }
    });

I have the problem in the conditional, that I verify that if the EditText is empty, I execute that code. The problem comes when I make a line break, although the line is empty, the application believes that there is text inserted, how can I tell it that even if the person presses enter without writing text, it is still empty and does not let him advance?

java

2 Answers

  1. Best Answer

    You can validate that it is empty even when it has blank spaces by doing atrim()

    etBeforeTranslate.getText().toString().trim().length() == 0
    • 2

  2. In this case I suggest you restrict the EditTextto a single line, defining these properties in the EditText, it will not allow giving Enterand it will always remain on the same line, in this way no spaces would be inserted:

    <EditText 
    ...
    ...
    android:inputType="text"
    android:maxLines="1"
    ...
    ...
    >
</EditText>

    Also consider adding validation for the case when spaces are inserted via the "space bar", using .trim()to remove the spaces.

    if(etBeforeTranslate.getText().toString().trim().isEmpty()){
 // Vacío.
}else{
  // Tiene contenido.
}
    • 2