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Implement Form Validation (Error to EditText) in Android
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ErrorProvider.SetError(Control, String) Method …
WebWhy not just disable the button if EditText is empty? IMHO This looks more professional: latest EditText txtFrecuencia = (EditText) findViewById(R.id.txtFrecuencia); final ToggleButton toggle = (ToggleButton) findViewById(R.id.toggleStartStop); txtFrecuencia.addTextChangedListener(new TextWatcher() { @Override public void … http://www.java2s.com/example/java-api/android/widget/textview/seterror-1-0.html WebE/AndroidRuntime: FATAL EXCEPTION: main Process: com.example.task2, PID: 6233 at android.app. Instrumentation. checkStartActivityResult (Instrumentation. java:1794 ... tri-city college prep high school