Flash & ActionScript3: load config json file

Trabla: Flash & ActionScript3 -  load config json file

Solving: 

...

public function loadConfig(){
   var loader:URLLoader  =  new URLLoader();
   loader.load( new URLRequest( 'config.json' ) );
   loader.addEventListener( Event.COMPLETE , processConfig );
}
public function processConfig(e:Event):void{

    // Content of the file config.json -  e.target.data
     var config:Object = JSON.parse( e.target.data );
    
     //Process Config Object 
     ...
}

Flash & ActionScript3: remove Child Display Objects from Sprite( MovieClip)

Trabla: Flash & ActionScript3 - remove Child Display Objects from Sprite( MovieClip)

Solving:

....

var sprite:Sprite = new Sprite();

//Adding TextField to Sprite
for( var i:int = 0; i  < 3 ; i++ ){

     var tf:TextField = new TextField();
     sprite.addChild( tf );
}

var childrenNumber = sprite.numChildren;

//Removing Sprite children
for( var i:int = 0; i  < childrenNumber ; i++ ){
 
     sprite.removeChildAt(  0  );

}
....

Flash & ActionScript3: record WAV 16khz mono from Microphone example

Trabla: Flash & ActionScript3 -  record  WAV 16khz mono from Microphone example

Solving:

1. Create project folder structure

C:\micrecorder\
C:\micrecorder\app.fla
C:\micrecorder\src\MicRecorder.as

2. Connect  app.fla to src.MicRecorder  Class

3. Sources of  MicRecorder.as

 package  src{
    import flash.text.TextField;
    import flash.events.MouseEvent;
    import flash.display.MovieClip;
    import flash.utils.ByteArray;
    import flash.media.Microphone;
    import flash.media.SoundCodec;
    import flash.events.*;
    import flash.events.SampleDataEvent;
    import flash.utils.ByteArray;
    import flash.net.FileReference;
    import flash.utils.Endian;
  
    public class MicRecorder  extends MovieClip {
      
        public static const BUTTON_WIDTH = 80;
        public static const BUTTON_HEIGHT = 30;
      
        // 2^5 - 1
        public static const FLOAT_TO_INT:int =  32767;
      
        public static const STRING_RECORD = 'Record';
        public static const STRING_STOP = 'Stop';
        private static const STRING_SAVE_WAV = 'Save WAV';
      
        private var btnRecord:TextField = new TextField();
        private var btnStopRecording:TextField = new TextField();
        private var btnSaveWAVFile:TextField = new TextField();
      
        //sound bytes from microphone 16khz
        private var soundBytes:ByteArray = new ByteArray();
        // sound bytes converted to WAV file ( with correct wav header)
        private var wav:ByteArray = new ByteArray();
        // file reference to save WAV audio of recorded sound
        private var file:FileReference = new FileReference();
      
        private var microphone:Microphone;

        public function MicRecorder() {
          
            var x = 10;
            var y = 10;
          
            btnRecord.htmlText = "<a href='event:null'>&nbsp;"+STRING_RECORD+"</a>";
            btnRecord.width = BUTTON_WIDTH;
            btnRecord.height = BUTTON_HEIGHT;
            btnRecord.x = x;
            btnRecord.y = y;
            btnRecord.border = true;
            btnRecord.selectable = false;
            x = x + btnRecord.width + 10;
          
            btnStopRecording.htmlText = "<a href='event:null'>&nbsp;"+STRING_STOP+"</a>";
            btnStopRecording.width = BUTTON_WIDTH;
            btnStopRecording.height = BUTTON_HEIGHT;
            btnStopRecording.x = x;
            btnStopRecording.y = y;
            btnStopRecording.border = true;
            btnStopRecording.selectable = false;
            x = x + btnStopRecording.width + 10;
          
            btnSaveWAVFile.htmlText = "<a href='event:null'>&nbsp;"+STRING_SAVE_WAV+"</a>";
            btnSaveWAVFile.width = BUTTON_WIDTH;
            btnSaveWAVFile.height = BUTTON_HEIGHT;
            btnSaveWAVFile.x = x;
            btnSaveWAVFile.y = y;
            btnSaveWAVFile.border = true;
            btnSaveWAVFile.selectable = false;
            x = x + btnSaveWAVFile.width + 10;
          
            //Init Event Listeners
            btnRecord.addEventListener( MouseEvent.CLICK, record );
            btnStopRecording.addEventListener( MouseEvent.CLICK, stopRecording );
            btnSaveWAVFile.addEventListener( MouseEvent.CLICK, saveWavFile );
          
            this.addChild( btnRecord );
            this.addChild( btnStopRecording );
            this.addChild( btnSaveWAVFile );
          
        }//public function MicRecorder() {
      
        public function record(e:MouseEvent):void
        {
            clearSoundData();
          
            microphone = Microphone.getMicrophone();
            microphone.codec = SoundCodec.SPEEX;
            microphone.rate = 16;// - !!! ALWAYS 16KHz if encoding SPEEX!!!
            microphone.encodeQuality = 10;
            microphone.setLoopBack(false);
            microphone.setUseEchoSuppression(true);
            microphone.gain = 50;
            microphone.setSilenceLevel(5, 1000);
          
            microphone.addEventListener(SampleDataEvent.SAMPLE_DATA, listen);
          
        }//public function record(e:MouseEvent):void
      
        public function stopRecording(e:MouseEvent):void
        {
            microphone.removeEventListener(SampleDataEvent.SAMPLE_DATA, listen);
          
        }//public function stopRecording(e:MouseEvent):void
      
        public function saveWavFile(e:MouseEvent):void
        {
            saveSound();
        }//public function saveWavFile(e:MouseEvent):void
      
        //Read sound data from microphone and save in soundBytes Array
        public function listen(e:SampleDataEvent):void{
          
            while(e.data.bytesAvailable)
             {
                  var sample:Number = e.data.readFloat();
                 //sample - IEEE FLOAT 32 audio data - value range from -1 to 1
                //Mono
                  soundBytes.writeFloat(sample);
                //to Stereo uncomment line below
                //soundBytes.writeFloat(sample);
             }
        }
      
        //Clear all sound buffers
        public function clearSoundData(){
            soundBytes.clear();
            wav.clear();
        }//public function clearSoundData(){
      
        //Creates wav file with header from captured microphone input
        public function getWAV():ByteArray{
            return encodeToWav(soundBytes);
        }//public function getWAV():ByteArray{
          
        //Saves WAV file of recorded microphone sound
        public function saveSound(){
            file.save(encodeToWav(soundBytes));
        }//public function saveSound(){
          
        public function encodeToWav( data:ByteArray ):ByteArray
        {  
                var channels:uint = 1;
                var BitsPerSample:uint = 16;
                var SampleRate:uint = 16000;
              
                var bytes: ByteArray = new ByteArray();
                bytes.endian = Endian.LITTLE_ENDIAN;
              
                bytes.writeUTFBytes( 'RIFF' );
                bytes.writeInt( data.length  );
                bytes.writeUTFBytes( 'WAVE' );
                //Subchunk1ID Contains the letters "fmt " (0x666d7420 big-endian form).
                bytes.writeUTFBytes( 'fmt ' );
              
                //Subchunk1Size. 16 for PCM
                bytes.writeInt( 16 );
                //formatValues other than 1  indicate some form of compression.
                bytes.writeShort( 1 );
                //channels
                bytes.writeShort( channels );
                //sample rate
                bytes.writeInt( SampleRate );
                //ByteRate == SampleRate * NumChannels * BitsPerSample/8
                bytes.writeInt( SampleRate * channels * BitsPerSample / 8  );
                //BlockAlign       == NumChannels * BitsPerSample/8
                //The number of bytes for one sample including all channels.
                bytes.writeShort(  channels * BitsPerSample / 8 );
                bytes.writeShort( 16 );
                bytes.writeUTFBytes( 'data' );
                //Subchunk2Size    ==  NumSamples * NumChannels * BitsPerSample/8
                bytes.writeUnsignedInt( data.length  );
              
                data.position = 0;
                var length:int = data.length - 4;
                while (data.position < length) {
                    bytes.writeShort(int(data.readFloat() * 32767));
                  
                }
                bytes.position = 0;
              
                return bytes;
        }//public function encodeToWav( data:ByteArray ):ByteArray
      

    }//public class MicRecorder  extends MovieClip {
  
}//package  src{

Flash & ActionScript3: send Event from custom class

Trabla: Flash & ActionScript3 -  send Event from custom class


Solving:

 import flash.events.*;

public class MyClass extends EventDispatcher {

  private var _completeEvent:Event = new Event ( Event.COMPLETE );

  public function MyClass(){
      //constructor
  }


 public function doSomething(){
    // Doing something ...
    dispatchEvent( _completeEvent );
 }

}

Flash & ActionScript3: enable input in TextField

Trabla: Flash & ActionScript3 - enable input in TextField

Solving:

import flash.text.TextField;
import flash.text.TextFieldType;

...

var fldComment = new TextField();
fldComment .width = 50;
fldComment .height = 20;
fldComment .x = 10;
fldComment .y = 10;
fldComment .border = true;
fldComment .selectable = true;
fldComment .type = TextFieldType.INPUT;

movieclip.addChild( fldComment  );

Flash & ActionScript3: load and play MP3 file

Trabla: Flash & ActionScript3: load and play MP3 file

Solving:

import flash.media.Sound;
import flash.net.URLRequest;
import flash.events.*;

...

var url:String = 'http://mysite.com/audio/audio.mp3';
var request:URLRequest = new URLRequest( url );
var sound = new Sound();
sound.addEventListener( Event.COMPLETE, soundLoaded );
sound.load( request );

...

public function soundLoaded(e:Event):void{
           sound.play();
 }

Flash & ActionScript3: URLLoader POST example

Trabla: Flash & ActionScript3 - URLLoader POST example

Solving:

import flash.net.URLLoader ;
import flash.net.URLRequest ;
...

// byteArrayData - byte array with data, e.g. wav file

var serviceUrl:String = 'http://myservice.com/dosomething?id=1&mode=2';
var loader:URLLoader = new URLLoader();
var request:URLRequest = new URLRequest( serviceUrl );

loader.addEventListener( Event.COMPLETE, onResponse);
request.method = URLRequestMethod.POST;
request.data = byteArrayData;
loader.load(request);

...

public function onResponse( e:Event ):void
{
      trace('Response:' + e.target.data );
}

Flash & ActionScript3: use TextField as button

Trabla: Flash & ActionScript3 - use TextField as button

Solving:

import flash.text.TextField;

...

var btnGo:TextField = new TextField();
btnGo.htmlText = "<a href='event:null'>Go!</a>";
btnGo.width = 50;
btnGo.height = 50;
btnGo.x = 10;
btnGo.y = 10;
btnGo.border = true;
btnGo.selectable = false;
btnGo.addEventListener( MouseEvent.CLICK, btnGoClicked );

...

public function btnGoClicked (e:MouseEvent):void{
            trace('Button Go Clicked');     
}