Possible fix for disabling virtual keyboard

calculatorpp/src/main/java/org/solovyev/android/calculator/CalculatorEditor.java

@@ -10,10 +10,14 @@ import android.content.SharedPreferences;
 import android.graphics.Color;
 import android.os.Build;
 import android.text.Html;
+import android.text.InputType;
 import android.util.AttributeSet;
 import android.util.Log;
 import android.view.ContextMenu;
+import android.view.MotionEvent;
+import android.view.View;
 import android.widget.EditText;
+import android.widget.TextView;
 import org.jetbrains.annotations.NotNull;
 import org.solovyev.android.calculator.model.CalculatorEngine;
 import org.solovyev.android.calculator.model.CalculatorParseException;
@@ -37,20 +41,40 @@ public class CalculatorEditor extends EditText implements SharedPreferences.OnSh
 
 	public CalculatorEditor(Context context) {
 		super(context);
+        init();
 	}
 
 	public CalculatorEditor(Context context, AttributeSet attrs) {
 		super(context, attrs);
+        init();
     }
 
-	public CalculatorEditor(Context context, AttributeSet attrs, int defStyle) {
+    private void init() {
-		super(context, attrs, defStyle);
+        this.setOnTouchListener(new OnTouchListener() {
+            @Override
+            public boolean onTouch(View v, MotionEvent event) {
+                final TextView textView = (TextView)v;
+                // backup the input type
+                int inputType = textView.getInputType();
+
+                // disable soft input
+                textView.setInputType(InputType.TYPE_NULL);
+
+                // call native handler
+                textView.onTouchEvent(event);
+
+                // restore input type
+                textView.setInputType(inputType);
+
+                // consume touch even
+                return true;
             }
+        });
+    }
+
 
     @Override
     public boolean onCheckIsTextEditor() {
-		// Main goal of this implementation is to hide android soft keyboard from appearing when working with text input
-
         if (Build.VERSION.SDK_INT >= 11) {
             // fix for missing cursor in android 3 and higher
             return true;
@@ -59,6 +83,11 @@ public class CalculatorEditor extends EditText implements SharedPreferences.OnSh
         }
     }
 
+    public CalculatorEditor(Context context, AttributeSet attrs, int defStyle) {
+		super(context, attrs, defStyle);
+        init();
+    }
+
 	@Override
 	protected void onCreateContextMenu(ContextMenu menu) {
 		super.onCreateContextMenu(menu);