Use the filter for that. Here I am adding the code for filter. EditText etName = (EditText)findViewById(R.id.etName); InputFilter filter = new InputFilter() { @Override public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) { for (int i = start; i < end; i++) { if (!Character.isLetterOrDigit(source.charAt(i))) { return “”; } … Read more
I originally had an answer about Key Bindings, but after a little testing I found that they still had the same stutter problem. Don’t rely on the repeat rate of the OS. It can be different for every platform and a user may also customize it. Instead use a Timer to schedule the event. You … Read more
Add android:windowSoftInputMode=”stateAlwaysVisible” to your activity in the AndroidManifest.xml file: <activity android:name=”.MainActivity” android:label=”@string/app_name” android:windowSoftInputMode=”stateAlwaysVisible” /> In my test app this shows the keyboard on starting of the application although it isn’t fixed there but can be dismissed by pressing the back button. To make sure the keyboard is always visible you might have to create your … Read more
From what I understand you want memory that won’t be erased every time the Arduino is off. Do some research into EEPROM. In terms of debugging, the code you have there is a bit difficult to read. Try inserting statements which print the value of a certain variable as the program progresses and see where … Read more