I have been coding in Flash for a while, though I haven't worked a whole lot on AIR Mobile yet. That being said, when debugging on an Android device via USB, Video objects sometimes work just fine when a Camera or NetStream object is attached, and sometimes they refuse to do anything. In the case of a NetStream, the audio is also missing In the case of a NetStream object, if I go to the device's desktop, then come back to the app without ever closing it, then the Video object will suddenly start working.
I have two basic methods of reproducing this:
1. For the Camera:
package
{
import flash.display.Sprite;
import flash.display.StageAlign;
import flash.display.StageScaleMode;
import flash.events.Event;
import flash.events.TimerEvent;
import flash.media.Camera;
import flash.media.Video;
import flash.utils.Timer;
public class CameraExample extends Sprite
{
private var m_cam:Camera;
private var m_vid:Video = new Video();
private var m_tmr:Timer = new Timer(1000);
public function CameraExample()
{
stage ? init() : addEventListener(Event.ADDED_TO_STAGE, init);
function init(pEvent:Event = null):void {
// support autoOrients
stage.align = StageAlign.TOP_LEFT;
stage.scaleMode = StageScaleMode.NO_SCALE;
m_tmr.addEventListener(TimerEvent.TIMER, onTimer);
m_tmr.start();
}
}
private function onTimer(pEvent:TimerEvent):void
{
if (m_cam = Camera.getCamera())
{
m_tmr.removeEventListener(TimerEvent.TIMER, onTimer);
m_tmr.stop();
m_vid.attachCamera(m_cam);
addChild(m_vid);
trace("here")
}
}
}
}
2. For the NetStream (this is two programs):
package
{
import flash.display.Sprite;
import flash.events.Event;
import flash.events.NetStatusEvent;
import flash.events.TimerEvent;
import flash.media.Camera;
import flash.media.Microphone;
import flash.net.NetConnection;
import flash.net.NetStream;
import flash.utils.Timer;
public class NetStreamExample1 extends Sprite
{
private var m_nc:NetConnection = new NetConnection();
private var m_ns:NetStream;
private var m_cam:Camera;
private var m_mic:Microphone;
private var m_tmr:Timer = new Timer(1000);
public function NetStreamExample1()
{
m_tmr.addEventListener(TimerEvent.TIMER, onTimer);
m_tmr.start();
}
private function onTimer(pEvent:TimerEvent):void
{
if (m_cam = Camera.getCamera())
{
m_tmr.removeEventListener(TimerEvent.TIMER, onTimer);
m_tmr.stop();
m_mic = Microphone.getMicrophone();
m_nc.addEventListener(NetStatusEvent.NET_STATUS, onNetStatusNC);
m_nc.connect("rtmp://SomeIPAddress/SomeApp/0");
}
}
private function onNetStatusNC(pEvent:NetStatusEvent):void
{
if (pEvent.info.code == "NetConnection.Connect.Success")
{
m_ns = new NetStream(m_nc);
m_ns.attachCamera(m_cam);
m_ns.attachAudio(m_mic);
m_ns.publish("0", "live");
}
}
}
}
And:
package
{
import flash.display.Sprite;
import flash.display.StageAlign;
import flash.display.StageScaleMode;
import flash.events.Event;
import flash.events.NetStatusEvent;
import flash.events.TimerEvent;
import flash.media.Video;
import flash.net.NetConnection;
import flash.net.NetStream;
import flash.utils.Timer;
public class NetStreamExample2 extends Sprite
{
private var m_nc:NetConnection = new NetConnection();
private var m_ns:NetStream;
private var m_vid:Video = new Video();
private var m_tmr:Timer = new Timer(5000, 1);
public function NetStreamExample2()
{
stage ? init() : addEventListener(Event.ADDED_TO_STAGE, init);
function init(pEvent:Event = null):void {
// support autoOrients
stage.align = StageAlign.TOP_LEFT;
stage.scaleMode = StageScaleMode.NO_SCALE;
addChild(m_vid);
m_nc.addEventListener(NetStatusEvent.NET_STATUS, onNetStatusNC);
m_nc.connect("rtmp://SomeIPAddress/SomeApp/0");
}
}
private function onNetStatusNC(pEvent:NetStatusEvent):void
{
trace("m_nc: " + pEvent.info.code);
if (pEvent.info.code == "NetConnection.Connect.Success")
{
m_ns = new NetStream(m_nc);
m_ns.addEventListener(NetStatusEvent.NET_STATUS, onNetStatusNS);
m_ns.play("0", "live");
m_vid.attachNetStream(m_ns);
m_tmr.addEventListener(TimerEvent.TIMER, onTimer);
m_tmr.start();
}
}
private function onNetStatusNS(pEvent:NetStatusEvent):void
{
trace("m_ns: " + pEvent.info.code);
}
private function onTimer(pEvent:TimerEvent):void
{
trace(m_ns.info.videoBytesPerSecond);
}
}
}
For the NetStream example, run the first part directly out of the IDE, as a desktop AIR app, and run the second part on the Android device through the IDE through a USB cord. For the FMS, just add a blank app called "SomeApp" without any code.
In the NetStream example, I can see comparable amounts being traced for m_ns.info.videoBytesPerSecond. The output when it's working is:
m_nc: NetConnection.Connect.Success
m_ns: NetStream.Play.Reset
m_ns: NetStream.Play.Start
m_ns: NetStream.Video.DimensionChange
~15-20k
And when it's not working, it's:
m_nc: NetConnection.Connect.Success
m_ns: NetStream.Play.Reset
m_ns: NetStream.Play.Start
~15-20k
The output is identical in both cases in the Camera example. Either example will either succeed or fail at random.
As stated earlier, in the NetStream example, if I run back to the Android device's desktop, then go back to the app without ever closing it, it'll suddenly start working. In that case, a NetStream.Video.DimensionChange event will be logged when I come back to the app. However this doesn't work for the Camera example.
Does anyone recognize this or know what is happening, or in particular, a good way to fix it? This does not happen when running it out of the emulator in the IDE. I'm using Flash Builder 4.7. Thanks!
UPDATE:
This will apparently only happen when running in debug mode.
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