Android application icon tutorial

Assigning an icon to your Android application just takes a minute.  Actually creating the icon may take a bit longer.

1. Create a 48×48 PNG and drop it into /res/drawable.  The name of this file is usually “icon.png”.
2. Open your AndroidManifest.xml.
3. Right under the root “manifest” node of the XML, you should see the “application” node.  Add this attribute to “application”. (The “icon” in “@drawable/icon” refers to the file name of the icon.)

   android:icon="@drawable/icon"

Your app is now iconned.

เทคนิคการใส่ ScrollView ร่วมกับ object ตัวอื่น

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_height="wrap_content" android:layout_width="fill_parent">
     <TextView android:id="@+id/TextView01" android:layout_height="wrap_content" android:layout_width="wrap_content" android:text="This text view should act as header  " />
     <ScrollView android:layout_marginBottom="50dip" android:id="@+id/ScrollView01" android:layout_height="wrap_content" android:layout_width="fill_parent">
          <RadioGroup android:id="@+id/RadioGroup01" android:layout_width="wrap_content" android:layout_height="wrap_content">
               <RadioButton android:id="@+id/RadioButton01" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Radio Button....." />
               <RadioButton android:id="@+id/RadioButton02" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Radio Button....." />
               <RadioButton android:id="@+id/RadioButton02" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Radio Button....." />
               <RadioButton android:id="@+id/RadioButton02" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Radio Button....." />
               <RadioButton android:id="@+id/RadioButton02" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Radio Button....." />
               <RadioButton android:id="@+id/RadioButton02" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Radio Button....." />
               <RadioButton android:id="@+id/RadioButton02" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Radio Button....." />
               <RadioButton android:id="@+id/RadioButton02" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Radio Button....." />
               <RadioButton android:id="@+id/RadioButton02" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Radio Button....." />
               <RadioButton android:id="@+id/RadioButton02" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Radio Button....." />
               <RadioButton android:id="@+id/RadioButton02" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Radio Button....." />
               <RadioButton android:id="@+id/RadioButton02" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Radio Button....." />
               <RadioButton android:id="@+id/RadioButton02" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Radio Button....." />
               <RadioButton android:id="@+id/RadioButton11" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Radio Button....." />       
          </RadioGroup>
     </ScrollView>
     <RelativeLayout android:layout_marginTop="-50dip" android:gravity="bottom" android:layout_height="wrap_content" android:layout_width="fill_parent">
        <Button android:id="@+id/Button01" android:layout_height="wrap_content" android:layout_width="fill_parent" android:text="A button that should always be at the bottom"/>
     </RelativeLayout>
</LinearLayout>

via http://www.droidnova.com/layout-technique-static-elements-below-scrollview,123.html