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edtext.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void afterTextChanged(Editable s) {
// setEnable or disabled for ok-button
}
});
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private Pattern namePattern = Pattern.compile("^([A-Z][a-züöäß]{1,29})[,][ ]([A-Z][a-züöäß]{1,29})$");
private boolean isNameOk=true;
private void setEnabledbnOk() {
bnSaveChanges.setEnabled(this.isNameOk);
}
// in onCreate
edtext.addTextChangedListener(new TextWatcher() {
// check, if
private boolean isValid(CharSequence s) {
return namePattern.matcher(s).matches();
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void afterTextChanged(Editable s) {
if (isValid(s)) {
tvValidStdname.setText(""); // a textview which has a blank or a star (*)
isNameOk = true;
}
else {
tvValidStdname.setText("*");
isNameOk=false;
}
setEnabledbnOk();
}
});
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