Add an icon to the left of the settings at the top level.

Add a new attribute for the icon.
Add place holder icons.

src/com/android/settings/IconPreferenceScreen.java

@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2009 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.android.settings;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.graphics.drawable.Drawable;
+import android.preference.Preference;
+import android.util.AttributeSet;
+import android.view.View;
+import android.widget.ImageView;
+
+public class IconPreferenceScreen extends Preference {
+
+    private Drawable mIcon;
+
+    public IconPreferenceScreen(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public IconPreferenceScreen(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+        setLayoutResource(R.layout.preference_icon);
+        TypedArray a = context.obtainStyledAttributes(attrs,
+                R.styleable.IconPreferenceScreen, defStyle, 0);
+        mIcon = a.getDrawable(R.styleable.IconPreferenceScreen_icon);
+    }
+
+    @Override
+    public void onBindView(View view) {
+        super.onBindView(view);
+        ImageView imageView = (ImageView) view.findViewById(R.id.icon);
+        if (imageView != null && mIcon != null) {
+            imageView.setImageDrawable(mIcon);
+        }
+    }
+}