Add number picker to ApiDemos

Change-Id: I33dc7a01f543cb5308e810f508bedc3d25eb366a

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

@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2007 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 com.example.android.apis.R;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.widget.CheckBox;
+import android.widget.CompoundButton;
+import android.widget.CompoundButton.OnCheckedChangeListener;
+import android.widget.NumberPicker;
+
+
+/**
+ * Demonstrates how to use a seek bar
+ */
+public class NumberPickerActivity extends Activity {
+    private NumberPicker mNumberPicker;
+    
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        setContentView(R.layout.number_picker);
+
+        mNumberPicker = (NumberPicker) findViewById(R.id.number_picker);
+        mNumberPicker.setMaxValue(30);
+
+        ((CheckBox) findViewById(R.id.enabled)).setOnCheckedChangeListener(
+                new OnCheckedChangeListener() {
+                    @Override
+                    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
+                        mNumberPicker.setEnabled(isChecked);
+                    }
+                });
+    }
+}