Error in inflating a layout into AlertDialog (Android)
<pre><code>public void popInstructionsDialog(String title, String text, String buttonText, Activity activity){

    AlertDialog.Builder builder;
    AlertDialog alertDialog;

    Context mContext = activity.getApplicationContext();
    LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View layout = inflater.inflate(R.layout.instructions, (ViewGroup) activity.findViewById(R.id.layout_root));

    TextView text1 = (TextView) layout.findViewById(R.id.text);
    text1.setText("Hello, this is a custom dialog!");
    ImageView image = (ImageView) layout.findViewById(R.id.image);
    image.setImageResource(R.drawable.icon);

    builder = new AlertDialog.Builder(mContext);
    builder.setView(layout);
    alertDialog = builder.create();

    alertDialog.show();
}
</code></pre>

<p>I get the following error</p>

<pre><code>06-01 10:59:20.908: ERROR/AndroidRuntime(664): FATAL EXCEPTION: main
06-01 10:59:20.908: ERROR/AndroidRuntime(664): android.view.WindowManager$BadTokenException: Unable to add window -- token null is not for an application
06-01 10:59:20.908: ERROR/AndroidRuntime(664):     at android.view.ViewRoot.setView(ViewRoot.java:531)
06-01 10:59:20.908: ERROR/AndroidRuntime(664):     at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:177)
06-01 10:59:20.908: ERROR/AndroidRuntime(664):     at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
06-01 10:59:20.908: ERROR/AndroidRuntime(664):     at android.app.Dialog.show(Dialog.java:241)
06-01 10:59:20.908: ERROR/AndroidRuntime(664):     at hiit.nopsa.pirate.InstructionDialog.popInstructionsDialog(InstructionDialog.java:34)
</code></pre>

<p>InstructionDialog.java:34 is the last line of code which is "alertDialog.show()". Can any one suggest me how to correct this. And following is the instructions.xml</p>

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:id="@+id/layout_root"
              android:orientation="horizontal"
              android:layout_width="fill_parent"
              android:layout_height="fill_parent"
              android:padding="10dp"
              &gt;
    &lt;TextView android:id="@+id/title"
              android:layout_width="wrap_content"
              android:layout_height="fill_parent"
              android:textColor="#FFF"
              /&gt;
    &lt;ImageView android:id="@+id/image"
               android:layout_width="wrap_content"
               android:layout_height="fill_parent"
               android:layout_marginRight="10dp"
               /&gt;
    &lt;TextView android:id="@+id/text"
              android:layout_width="wrap_content"
              android:layout_height="fill_parent"
              android:textColor="#FFF"
              /&gt;
&lt;/LinearLayout&gt;
</code></pre>
