Knowing that a button has been clicked

Question

I would like to know that a certain Button has been clicked, so that it does not pass the null validation. Follows code:

//OnClick da tela de registro
btnRegistrar = (Button)findViewById(R.id.email_registrar_button);
btnRegistrar.setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View v) {
        intent = new Intent(LoginActivity.this,RegistrarActivity.class);
        //startNewIntent("registrar");
    }
});

But before opening Activity he passes this validation:

if ((TextUtils.isEmpty(email) || TextUtils.isEmpty(password) && (!btnRegistrar.isPressed()))) {
    mEmailView.setError(getString(R.string.error_field_required));
    mPasswordView.setError(getString(R.string.error_field_required));
    focusView = mEmailView;
    cancel = true;

This "isPressed()" was one of the trials. Thank you!

Edit: When clicking the button it calls this validation, I used the login template of android studio

Edti2: Rewritten the question, it was an encoding error. I cannot delete the question.

Answer 1

Fala Henrique,

You can use the property Boolean:

You declare a variable of type Boolean, with the name clicked and the default value as false;

private boolean clicked = false;

Then, inside the button click, you change this variable to true, thus:

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

      clicked = true;

      if(clicked) {
          if ((TextUtils.isEmpty(email) || TextUtils.isEmpty(password))){
              mEmailView.setError(getString(R.string.error_field_required));
              mPasswordView.setError(getString(R.string.error_field_required));
              focusView = mEmailView;
          }else{
              intent = new Intent(LoginActivity.this,RegistrarActivity.class);
              startActivity(intent);
          }
      }
   }
});

Hugs.

Answer 2

You may have misunderstood, however, as I understood by clicking on btnRegister you will check that the fields are not empty correct ?

It seems to me that the validation will be inside the Onclicklistener event so this code snippet will only be executed if the button is pressed, there is no need to check if it was clicked. If you are going to check if another button has been clicked, you should use a variable to store this information when the other event is triggered.

If the reason for your check is to prevent the button from being null, this check should be done when you assign the value to the variable, because not finding the view can trigger a Nullpointerexception.

And lastly if you want to store a more permanent setting, consider swapping the button for a switch or something like that, because the.isPressed() button will only return true if the user is still pressing it and has not been pressed.

Any doubt I’m available :)

Answer 3

I would declare Edittext as global and in the click event I would do so:

btnRegistrar = (Button)findViewById(R.id.email_registrar_button);
btnRegistrar.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
    if(critica){
     intent = new Intent(LoginActivity.this,RegistrarActivity.class);
    //startNewIntent("registrar");
    }     
}});


private boolean critica() {
    if (mEmailView.getText().toString().isEmpty()) {
        mEmailView.setError(getString(R.string.error_field_required));
        return false;
    }

    if (mPasswordView.getText().toString().isEmpty()) {
        mPasswordView.setError(getString(R.string.error_field_required));
        return false;
    }

    return true;
}