added droidkit namesapce for xml attributes, number picker preference…

… accepts xml attrs for startRange and endRange, also can be set in Java.

demos/res/xml/num_pick_prefs.xml

@@ -16,12 +16,14 @@
  * limitations under the License.
  */
  -->
- <PreferenceScreen xmlns:droidkit="http://schemas.android.com/apk/res/org.droidkit"
+ <PreferenceScreen xmlns:droidkit="http://schemas.android.com/apk/res/org.droidkit.demos"
      xmlns:android="http://schemas.android.com/apk/res/android">
 
      <org.droidkit.preference.NumberPickerPreference
          android:key="demo.number.preference"
          android:title="Demo Number Picker"
-         android:summary="Shows how to implement a num picker" />
+         android:summary="Implement a num picker pref"
+         droidkit:startRange="-50"
+         droidkit:endRange="50" />
 
 </PreferenceScreen>

res/values/attrs.xml

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+ * Copyright (C) 2010 Mike Novak <michael.novakjr@gmail.com>
+ *
+ * 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.
+ */
+ -->
+<resources>
+    <declare-styleable name="droidkit">
+        <attr name="startRange" format="integer" />
+        <attr name="endRange" format="integer" />
+    </declare-styleable>
+</resources>

src/org/droidkit/preference/NumberPickerPreference.java

@@ -17,6 +17,7 @@
 
 import android.content.Context;
 import android.content.DialogInterface;
+import android.content.res.TypedArray;
 import android.preference.DialogPreference;
 import android.util.AttributeSet;
 import android.view.View;
@@ -26,11 +27,19 @@
 
 public class NumberPickerPreference extends DialogPreference {
     private NumberPicker mPicker;
+    private int mStartRange;
+    private int mEndRange;
 
     public NumberPickerPreference(Context context, AttributeSet attrs, int defStyle) {
         super(context, attrs, defStyle);
 
+        TypedArray arr = context.obtainStyledAttributes(attrs, R.styleable.droidkit);
+        mStartRange = arr.getInteger(R.styleable.droidkit_startRange, 0);
+        mEndRange = arr.getInteger(R.styleable.droidkit_endRange, 200);
+
         setDialogLayoutResource(R.layout.number_picker_pref);
+
+        arr.recycle();
     }
 
     public NumberPickerPreference(Context context, AttributeSet attrs) {
@@ -44,8 +53,8 @@ public NumberPickerPreference(Context context) {
     @Override
     protected void onBindDialogView(View view) {
         super.onBindDialogView(view);
-
         mPicker = (NumberPicker) view.findViewById(R.id.pref_num_picker);
+        mPicker.setRange(mStartRange, mEndRange);
         mPicker.setCurrent(getValue());
     }
 
@@ -59,6 +68,10 @@ public void onClick(DialogInterface dialog, int which) {
         }
     }
 
+    public void setRange(int start, int end) {
+        mPicker.setRange(start, end);
+    }
+
     private void saveValue(int val) {
         getEditor().putInt(getKey(), val).commit();
         notifyChanged();