Calculator.Android

Language: Hydrogene, Platform: All, Category: Calculator
https://github.com/remobjects/ElementsSamples/tree/master/Hydrogene/All/Calculator/Calculator.Android

• calculator.android
  • References
    • android
    • cooper
    • elements
  • Source Files
    • MainActivity.cs
  • Other Files
    • res\values\strings.android-xml
    • res\layout\main.layout-xml
    • res\values\styles.android-xml
    • res\drawable-hdpi\icon.png
    • res\drawable-mdpi\icon.png
    • res\drawable-ldpi\icon.png
    • res\drawable-xhdpi\icon.png
    • Properties\AndroidManifest.android-xml

MainActivity.cs

using java.util;
using android.app;
using android.content;
using android.os;
using android.util;
using android.view;
using android.widget;
using Calculator.Engine;

namespace org.remobjects.calculator
{
	public class MainActivity: Activity
	{
		private TextView TbValue;

		void btnBackspace(View v)
		{
			var s = TbValue.Text.toString();
			if (s.length() > 0)
			{
				s = s.substring(0, s.length() - 1);
				TbValue.Text = s;
			}
		}

		void btnExecute(View v)
		{
			try
			{
				var eval = new Evaluator();
				var res = eval.Evaluate(TbValue.Text.toString());
				TbValue.Text = res.toString();
			}
			catch (Exception e)
			{
				var dlg = new AlertDialog.Builder(this);
				dlg.Message = "Error evaluating: " + e.Message;
				dlg.setPositiveButton("OK", null);
				dlg.Cancelable = true;
				dlg.create().show();
			}
		}

		void btnExit(View v)
		{
			finish();
		}

		void btnChar(View v)
		{
			TbValue.Text = TbValue.Text.toString() + ((Button)v).Text.toString();
		}

		public override void onCreate(Bundle savedInstanceState)
		{
			base.onCreate(savedInstanceState);
			ContentView = R.layout.main;
			TbValue = (TextView)findViewById(R.id.tbValue);
			((Button)findViewById(R.id.btnBackspace)).OnClickListener = btnBackspace;
			((Button)findViewById(R.id.btnExit)).OnClickListener = btnExit;
			((Button)findViewById(R.id.btnEval)).OnClickListener = btnExecute;
			((Button)findViewById(R.id.btn0)).OnClickListener = btnChar;
			((Button)findViewById(R.id.btn1)).OnClickListener = btnChar;
			((Button)findViewById(R.id.btn2)).OnClickListener = btnChar;
			((Button)findViewById(R.id.btn3)).OnClickListener = btnChar;
			((Button)findViewById(R.id.btn4)).OnClickListener = btnChar;
			((Button)findViewById(R.id.btn5)).OnClickListener = btnChar;
			((Button)findViewById(R.id.btn6)).OnClickListener = btnChar;
			((Button)findViewById(R.id.btn7)).OnClickListener = btnChar;
			((Button)findViewById(R.id.btn8)).OnClickListener = btnChar;
			((Button)findViewById(R.id.btn9)).OnClickListener = btnChar;
			((Button)findViewById(R.id.btnAdd)).OnClickListener = btnChar;
			((Button)findViewById(R.id.btnSub)).OnClickListener = btnChar;
			((Button)findViewById(R.id.btnDiv)).OnClickListener = btnChar;
			((Button)findViewById(R.id.btnMul)).OnClickListener = btnChar;

		}
	}
}