Hi there,
I am facing a problem I cannot solve. Somehow this is frustrating me.
What I want to do is, show an AlertDialog when a user enters an
invalid eMail address:
Button saveButton = (Button) findViewById(R.id.save);
saveButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
mUserNameText = (EditText) findViewById
(R.id.enterUserName);
mUserEmailText = (EditText)
findViewById(R.id.enterEmail);
long resultCode;
String userEmail =
mUserEmailText.getText().toString();
if (userEmail.length() > 0 &&
userEmail.matches("....@.+\\..+")) {
resultCode =
mDbHelper.createUser(mUserNameText.getText().toString
(), userEmail);
} else {
AlertDialog dialog = new
AlertDialog.Builder
(UserCreate.this).create();
dialog.setMessage("Invalid
Email!");
dialog.setButton2("OK", new
Message());
dialog.show();
resultCode = -1l;
}
The problem is that the dialog does't show!
The code is located in my class
> public class UserCreate extends Activity { ...}
I also tried AlertDialog.Builder with the same result.
Now I found out that I need a Handler, invoke the Looper and pack it
in a Thread.
But I cannot quite figure out how?!
Any help appreciated.
Many thanks in advance,
Tommaso
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