Add switch demo

Added default on state and a listener triggering a toast.

Change-Id: I79a89801d878b08fee55919e92044cd71f47108c

samples/ApiDemos/src/com/example/android/apis/view/Switches.java

@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.apis.view;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.widget.CompoundButton;
+import android.widget.Switch;
+import android.widget.Toast;
+
+import com.example.android.apis.R;
+
+/**
+ * Demonstrates the use of the toggle switch widget.
+ */
+public class Switches extends Activity implements CompoundButton.OnCheckedChangeListener {
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        
+        setContentView(R.layout.switches);
+        
+        Switch s = (Switch) findViewById(R.id.monitored_switch);
+        if (s != null) {
+            s.setOnCheckedChangeListener(this);
+        }
+    }
+
+    @Override
+    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
+       Toast.makeText(this, "Monitored switch is " + (isChecked ? "on" : "off"),
+               Toast.LENGTH_SHORT).show();
+    }
+}