Generate a QuickAction out of a standard menu.xml

src/net/londatiga/android/QuickActionInflater.java

@@ -0,0 +1,127 @@
+package net.londatiga.android;
+
+import java.io.IOException;
+
+import org.xmlpull.v1.XmlPullParser;
+import org.xmlpull.v1.XmlPullParserException;
+
+import android.content.Context;
+import android.content.res.XmlResourceParser;
+import android.util.AttributeSet;
+import android.util.Xml;
+import android.view.InflateException;
+
+/**
+ * created at 06.09.2012 - 22:27:57<br />
+ * creator: ollo<br />
+ * project: TimeWolf<br />
+ * $Id: $<br />
+ * 
+ * @author ollo<br />
+ * 
+ *         Inspired by the original MenuInflater, found at
+ *         http://www.devdaily.com
+ *         /java/jwarehouse/android/core/java/android/view
+ *         /MenuInflater.java.shtml
+ */
+public class QuickActionInflater {
+
+    private static final String ITEM = "item";
+    private static final String ICON = "icon";
+    private static final String TITLE = "title";
+    private static final String ACTION_ID = "id";
+
+    private Context mContext;
+
+    public QuickActionInflater(Context context) {
+        this.mContext = context;
+    }
+
+    /**
+     * Load the a standard menu.xml (menuRes) and add all items to the menu.
+     * @param menuRes
+     * @param menu
+     * 
+     * Usage:
+     * <code>
+     * final QuickAction mQuickAction  = new QuickAction(mContext);
+     *  final QuickActionInflater menuinflater = new QuickActionInflater(mContext);
+     *  menuinflater.inflate(R.menu.quickaction_menu, mQuickAction);
+     *  
+     *  //setup the action item click listener
+     *  mQuickAction.setOnActionItemClickListener(new QuickAction.OnActionItemClickListener() {
+     *      @Override
+     *      public void onItemClick(QuickAction quickAction, int pos, int actionId) {
+     *          switch (actionId) {
+     *          case R.id.action_event_create:
+     *              ; // do something
+     *              break;
+     *          }
+     *       }
+     *   };
+     *   mQuickAction.show(view); // sometimes later (when it is actual needed)
+     * </code>
+     */
+    public void inflate(final int menuRes, QuickAction menu) {
+        XmlResourceParser parser = null;
+        try {
+            parser = mContext.getResources().getLayout(menuRes);
+            AttributeSet attrs = Xml.asAttributeSet(parser);
+            parseMenu(parser, attrs, menu);
+        } catch (XmlPullParserException e) {
+            throw new InflateException("Error inflating menu XML", e);
+        } catch (IOException e) {
+            throw new InflateException("Error inflating menu XML", e);
+        } finally {
+            if (parser != null)
+                parser.close();
+        }
+    }
+
+    private void parseMenu(XmlResourceParser xrp, AttributeSet attrs, QuickAction menu) throws XmlPullParserException,
+            IOException {
+        while (xrp.getEventType() != XmlPullParser.END_DOCUMENT) {
+            if (xrp.getEventType() == XmlPullParser.START_TAG) {
+                try {
+                    handleStart(xrp, menu); // Do stuff with START_TAG
+                } catch(NumberFormatException nfe) {
+                    throw new IOException("wrong formated XML", nfe);
+                }
+            } 
+            xrp.next();
+        }
+    }
+
+    private void handleStart(XmlResourceParser xrp, QuickAction menu) throws NumberFormatException {
+        if (xrp.getName().equals(ITEM)) {
+            //Log.v("QuickAction", "attr count = " + xrp.getAttributeCount());
+            String uniqueId = xrp.getAttributeValue(xrp.getAttributeNamespace(0), ACTION_ID);
+            uniqueId = trimNumber(uniqueId);
+            final int actionId = Integer.parseInt(uniqueId);
+
+            String titleId = xrp.getAttributeValue(xrp.getAttributeNamespace(0), TITLE);
+            titleId = trimNumber(titleId);
+            final String title = mContext.getString(Integer.parseInt(titleId));
+
+            String iconId = xrp.getAttributeValue(xrp.getAttributeNamespace(0), ICON);
+            iconId = trimNumber(iconId);
+            final int icon = Integer.parseInt(iconId);
+
+            //Log.v("QuickActionInflater", "Item id=" + actionId + " " + title + " " + icon);
+            menu.addActionItem(new ActionItem(actionId, title, mContext.getResources().getDrawable(icon)));
+        }
+    }
+
+    /**
+     * remove characters at the beginning
+     * @param titleId
+     * @return
+     */
+    private String trimNumber(String titleId) {
+        while (titleId.length() > 1 && !Character.isDigit(titleId.charAt(0))) {
+            titleId = titleId.substring(1);
+        }
+        return titleId;
+    }
+
+}