Test application of Android using Presentation class which displays something on the remote display like a TV over Miracast technology.

Install this apk to the Nexus4 and display a simple text "Hello world,…" to the remote display which is connected the Miracast receiver(PTV3000 /firmware 2.2.2).

DisplayManger handles all displays including the local display.

mDisplayManager = (DisplayManager)getSystemService(Context.DISPLAY_SERVICE);

You can get all displays via DisplayManager.

Display[] displays = mDisplayManager.getDisplays();

Super easy to show something on the remote display. Just call show() method which is implemented in Presentation class provided by Android SDKr17.

private void showPresentation(Display display) {
    RemotePresentation presentation = new RemotePresentation(this, display);
    presentation.show();
}

RemotePresentation class is extended Presentation. Presentation class looks like Activity. You can set up the display overriding the onCreate method.

private final class RemotePresentation extends Presentation {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.remote_display);
    }
}

This demo apk shows only TextView on the remote display. The layout resource is remote_display.xml.

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:textSize="22sp"
        android:textStyle="bold"
        android:text="@string/hello_world" />

</RelativeLayout>

Nexus4: Currently only Nexus4 supports the Miracast(27 Dec. 2012).

PTV3000: I've tested this apk with PTV3000.

Turn on the "Wireless Display" on the Settings.

You can find wireless displays and tap an item to connect.

Check the firmware version. I bought this gadget from Amazon.com and the version is 1.0.13. TOO LOW!! This version does not support Miracast. You need to update the firmware in 2 steps.

STEP1: Download the latest firmware which is on Internet. I could find the version 2.2.2. This might not be official, I guess.

STEP2: Update the firmware. See the Installation Guide (PDF)