Read, Write and Update text in SD card
<p>I have 2 xml pages with one is main.xml and text.xml.In main.xml 4buttons like write,read,clear and close.and edit text also is there
at the same image also is there ,2 xml images also is there </p>

<p><strong>If i want:</strong> If click on read and write button if should go to another page i.e is text.xml page .</p>

<p>In text.xml page 3 radio buttons ,select on radio button after that click on save and open button operation should happen,and cancel ,back buttons also operation should happen.</p>

<p>In main.xml page also textclear and cancel buttons also operation should happen</p>

<p>This is a Main.xml file</p>

<pre><code>  &lt;?xml version="1.0" encoding="utf-8"?&gt;
 &lt;LinearLayout
 android:id="@+id/widget28"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent"
 android:background="#ff0000ff"
 android:orientation="vertical"
 xmlns:android="http://schemas.android.com/apk/res/android"
  &gt;
 &lt;EditText
 android:id="@+id/txtData"
 android:layout_width="fill_parent"
 android:layout_height="180px"
 android:textSize="18sp"  /&gt;

 &lt;Button
 android:id="@+id/btnWriteSDFile"
 android:layout_width="143px"
 android:layout_height="44px"
 android:text="1. Write SD File"  /&gt;

 &lt;Button
 android:id="@+id/btnClearScreen"
 android:layout_width="141px"
 android:layout_height="42px"
 android:text="2. Clear Screen" /&gt;

 &lt;Button
  android:id="@+id/btnReadSDFile"
  android:layout_width="140px"
  android:layout_height="42px"
  android:text="3. Read SD File" /&gt;


&lt;Button
 android:id="@+id/btnClose"
 android:layout_width="141px"
 android:layout_height="43px"
 android:text="4. Close" /&gt;

&lt;/LinearLayout&gt;
</code></pre>

<p>This is a text.xml file</p>

<pre><code> &lt;?xml version="1.0" encoding="utf-8"?&gt;

 &lt;AbsoluteLayout
android:id="@+id/widget0"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android"&gt;



 &lt;Button
android:id="@+id/widget32"
android:layout_width="87dp"
android:layout_height="wrap_content"
android:layout_x="9dp"
android:layout_y="5dp"
android:text="Back" /&gt;

 &lt;RadioButton
android:id="@+id/widget33"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Mysdfile1.xml"
android:layout_x="44dp"
android:layout_y="65dp" /&gt;
  &lt;RadioButton
android:id="@+id/widget34"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Mysdfile2.xml"
android:layout_x="43dp"
android:layout_y="112dp" /&gt;
  &lt;RadioButton
android:id="@+id/widget35"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Mysdfile3.xml"
android:layout_x="43dp"
android:layout_y="160dp" /&gt;

 &lt;Button
 android:id="@+id/widget37"
 android:layout_width="87dp"
 android:layout_height="wrap_content"
 android:layout_x="105dp"
 android:layout_y="239dp"
 android:text="OPEN" /&gt;

 &lt;Button
 android:id="@+id/widget36"
 android:layout_width="87dp"
 android:layout_height="wrap_content"
 android:layout_x="214dp"
 android:layout_y="239dp"
 android:text="CANCEL" /&gt;

 &lt;Button
 android:id="@+id/widget38"
 android:layout_width="87dp"
 android:layout_height="wrap_content"
 android:layout_x="2dp"
 android:layout_y="241dp"
 android:text="SAVE" /&gt;

 &lt;/AbsoluteLayout&gt;
</code></pre>
