Question

I am trying to do some EditText validation and want to use an AlertDialog
when the user inputs something that is illegal.

How can I have an alert dialog pop up and tell the user what is wrong with the input
and then after “OK” is pressed just go back to the same view?

I’m waiting until a “confirm” button is pressed to do validation and am already inside
a button’s onClickListener in an Activity like so:

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.add_progress);
    //
    // user adds info to progress screen
    // clicks confirm when done
    //
Button confirmButton = (Button) findViewById(R.id.confirm); 
    confirmButton.setOnClickListener(new View.OnClickListener() {

    public void onClick(View view) {
          // do validation code here
          //
          AlertDialog alert = new AlertDialog.Builder(AddStudentProgress.this).create();
          alert.setTitle("Oops");
          alert.setMessage("Inputs Can't be Empty");
          alert.setButton("Ok", new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int id) {
                    // I reall want to go back to the Activity and not really do anything
                }});

          if ( (mScoreText.getText().toString().equals("") )) {
            alert.show();
          }
          else {
            // validation looks ok, continue
          }

Am I going about this the wrong way? What should I be doing of I want to validate input?

Thanks in advance,
Martin

Answer 1

The following piece will do the trick

alert.setButton("Ok", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                       dialog.dismiss();
                    }});