CODEWITHSUNDEEP
android
Johnny Rottenweed
Johnny Rottenweed

Reputation: 337

Android: MessageBox not working

I am trying to do some data verification. In short, when an add button is pressed, if certain fields are not filled in then I want to display a message box and return from further processing.

This is the flow of my code without the messageBox code:

  Button add = (Button) findViewById(R.id.addButton);
    add.setOnClickListener(new View.OnClickListener() {
        public void onClick(View view) {


            //local vars
            String access;
            String gender;
            String avail;
            String availCode;


            // getting values from selected editItems
            String name = textName.getText().toString();                
            String street = textStreet.getText().toString();                
            String city = textCity.getText().toString();                
            String state = textState.getText().toString();              
            String postal = textPostal.getText().toString();
            String country = textCountry.getText().toString();
            String directions = textDirections.getText().toString();
            String comments = textComments.getText().toString();


            //verify miniminal data
            if((name.equals("")) || (street.equals(""))|| (city.equals("")) || (state.equals("")) || (postal.equals("")) || (country.equals("")))
            {

            }

I tried pasting in this code:

        //verify miniminal data
        if((name.equals("")) || (street.equals(""))|| (city.equals("")) || (state.equals("")) || (postal.equals("")) || (country.equals("")))
        {
            AlertDialog.Builder builder = new AlertDialog.Builder(context);
            builder.setCancelable(false);
            builder.setTitle("Title");
            builder.setInverseBackgroundForced(true);
            builder.setMessage("Must enter minimal data.");
            builder.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
              @Override
              public void onClick(DialogInterface dialog, int which) {
                dialog.dismiss();
                return;
              }
            });
            AlertDialog alert = builder.create();
            alert.show();

        }

But...I cannot get this line to build:

AlertDialog.Builder builder = new AlertDialog.Builder(context);

Eclipse is saying context cannot be resolved to a variable.

I am confused as to what to do. Can someone help?

Upvotes: 0

Views: 258

Answers (1)

A--C
A--C

Reputation: 36449

I don't see a context variable anywhere in the code above, and AlertDialog.Builder's constructor needs a Context instance passed to it.

However, since you're doing this from an OnClickListener's onClick(), you can use View#getContext() to get a Context instance.

AlertDialog.Builder builder = new AlertDialog.Builder(view.getContext());

Upvotes: 1

Related Questions