Validation of values in dialogue

[Trenton]

I have an entry dialogue:

AlertDialog.Builder inputDialog = new AlertDialog.Builder(context); 
EditText editText = new EditText(this.myContext); 
inputDialog.setView(editText); 
inputDialog.setTitle("Input Dialog"); 
inputDialog.setMessage("Input new value"); 
inputDialog.setPositiveButton("OK", new DialogInterface.OnClickListener() {
  public void onClick(DialogInterface _, int __) {
    String value = editText.getText() + "";
    // обработка значения
  }
});
inputDialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
  public void onClick(DialogInterface _, int __) {
  }
  }
});
inputDialog.show();

How do you make a button? OK was inaccessible with some user-entered values (from editText?

[Demir]

For example,

Button button = dialog.getButton(AlertDialog.BUTTON_POSITIVE);
if (editText.getText() == "значение") {

button.setEnabled(false);

}

This test may be placed in a clavicle compression listener

editText.setOnKeyListener(new OnKeyListener() {

@Override

public boolean onKey(View v, int keyCode, KeyEvent event) {

// Проверять здесь

}

});

or add this to the text filter

filter.addTextChangedListener(new TextWatcher() {

public void afterTextChanged(Editable s) {

}

public void beforeTextChanged(CharSequence s, int start, int count, int after){

}

public void onTextChanged(CharSequence s, int start, int before, int count)

{

// Проверять здесь

}

});