Code example for EditText

Methods: setGravitysetInputTypesetTextsetTextSize, setOnFocusChangeListener, setOnKeyListener

	private void initValueEditText(Context context) {
		value = new Integer(0);
		valueText = new EditText(context);
		// Since we're a number that gets affected by the button, we need to be 
		// ready to change the numeric value with a simple ++/--, so whenever 
		// the value is changed with a keyboard, convert that text value to a 
		// number. We can set the text area to only allow numeric input, but 
		// even so, a carriage return can get hacked through. To prevent this 
		// little quirk from causing a crash, store the value of the internal 
		// number before attempting to parse the changed value in the text area 
		// so we can revert to that in case the text change causes an invalid 
		// number 
		valueText.setOnKeyListener(new View.OnKeyListener() {
			public boolean onKey(View v, int arg1, KeyEvent event) {
				int backupValue = value;
				try { 
					value = Integer.parseInt(((EditText) v).getText().toString());
				catch (NumberFormatException nfe) {
					value = backupValue;
				return false; 
		// Highlight the number when we get focus 
		valueText.setOnFocusChangeListener(new View.OnFocusChangeListener() {
			public void onFocusChange(View v, boolean hasFocus) {
				if (hasFocus) {
					((EditText) v).selectAll();
		valueText.setGravity(Gravity.CENTER_VERTICAL | Gravity.CENTER_HORIZONTAL);
	private void initDecrementButton(Context context) {
		decrement = new Button(context);