how to validate a form before clicking button

Nandhini Jayachandran

i am having textbox ,checkbox and after entering values the button should become clickable before that it should not go to next page.how to do that and i have addTextChangedListener in that. in textchange and aftertextchange

3 Replies

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Ramesh Maruthi12y ago
You can use "CustomValidator" fo this. Check this code..

ErrorMessage="Please fill TextBox" >*
Nandhini Jayachandran12y ago
The validations has to be done before clicking button

Sivaranjani Sundarraj12y ago

plz refEr this link

https://sites.google.com/site/khetiyachintan/sample-example/edit-text-validation-example
http://tausiq.wordpress.com/2013/01/19/android-input-field-validation/

for checkbox validation

chkIos = (CheckBox) findViewById(R.id.chkIos);             chkAndroid = (CheckBox) findViewById(R.id.chkAndroid);             chkWindows = (CheckBox) findViewById(R.id.chkWindows);             btnDisplay = (Button) findViewById(R.id.btnDisplay);              btnDisplay.setOnClickListener(new OnClickListener() {                    //Run when button is clicked               @Override               public void onClick(View v) {   if(chkIos.isChecked() || chkAndroid.isChecked() || chkWindows.isChecked()){ //do some validation }               }             });            }