[AS3]Adobe AIR 移动设备调用摄像头
话说之前在用AIR做一个自己用的iOS APP时,需要用到手机自带的摄像头。但是我也知道AIR在移动设备上的表现,特别是与iOS设备并不算配合的太好,所以很纠结,不知道是否和桌面版的AIR一样。
查阅了一下Adobe官方的API,了解到了移动设备上专门有一个CameraUI类,和Camera类用法大致相同。
详细过程(来自Adobe http://help.adobe.com/zh_CN/FlashPlatform/reference/actionscript/3/flash/media/CameraUI.html):
package {
import flash.desktop.NativeApplication;
import flash.display.Loader;
import flash.display.MovieClip;
import flash.display.StageAlign;
import flash.display.StageScaleMode;
import flash.events.ErrorEvent;
import flash.events.Event;
import flash.events.IOErrorEvent;
import flash.events.MediaEvent;
import flash.media.CameraUI;
import flash.media.MediaPromise;
import flash.media.MediaType;
public class CameraUIStillImage extends MovieClip{
private var deviceCameraApp:CameraUI = new CameraUI();
private var imageLoader:Loader;
public function CameraUIStillImage() {
this.stage.align = StageAlign.TOP_LEFT;
this.stage.scaleMode = StageScaleMode.NO_SCALE;
if( CameraUI.isSupported )
{
trace( "Initializing camera..." );
deviceCameraApp.addEventListener( MediaEvent.COMPLETE, imageCaptured );
deviceCameraApp.addEventListener( Event.CANCEL, captureCanceled );
deviceCameraApp.addEventListener( ErrorEvent.ERROR, cameraError );
deviceCameraApp.launch( MediaType.IMAGE );
}
else
{
trace( "Camera interface is not supported.");
}
}
private function imageCaptured( event:MediaEvent ):void
{
trace( "Media captured..." );
var imagePromise:MediaPromise = event.data;
if( imagePromise.isAsync )
{
trace( "Asynchronous media promise." );
imageLoader = new Loader();
imageLoader.contentLoaderInfo.addEventListener( Event.COMPLETE, asyncImageLoaded );
imageLoader.addEventListener( IOErrorEvent.IO_ERROR, cameraError );
imageLoader.loadFilePromise( imagePromise );
}
else
{
trace( "Synchronous media promise." );
imageLoader.loadFilePromise( imagePromise );
showMedia( imageLoader );
}
}
private function captureCanceled( event:Event ):void
{
trace( "Media capture canceled." );
NativeApplication.nativeApplication.exit();
}
private function asyncImageLoaded( event:Event ):void
{
trace( "Media loaded in memory." );
showMedia( imageLoader );
}
private function showMedia( loader:Loader ):void
{
this.addChild( loader );
}
private function cameraError( error:ErrorEvent ):void
{
trace( "Error:" + error.text );
NativeApplication.nativeApplication.exit();
}
}
可见各项方法和属性都是非常齐全的,在iPad2上真机试了一下,效果也是非常好,调用了原生的拍照功能,很赞!
谢谢老板 Thanks♪(・ω・)ノ
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