使用适用于 iOS 的 Adob​​e Builder (flex) 拍照 [英] take photo using Adobe Builder (flex) for iOS

问题描述

谁知道如何使用 flex 拍照?我有点失落！我找到了一些教程，但没有用！

anyone know how can I take a photo using flex ? I'm a little lost ! I found some tutorials but not work it !

推荐答案

XpenseIt (Flex 移动项目 FXP 下载) 示例代码提供了此相机实现.

XpenseIt (Flex mobile project FXP download) example code offers this camera implementation.

调用takePicture()启动相机，然后从loaderInfo.loader获取图像.

Call takePicture() to launch the camera, then obtain image from loaderInfo.loader.

var bitmapData:BitmapData = new BitmapData(loaderInfo.width, loaderInfo.height);
bitmapData.draw(loaderInfo.loader);

下面的相机实用程序类:

Camera utility class below:

类:CameraUtil

package utils
{
    import events.CameraEvent;

    import flash.display.BitmapData;
    import flash.display.Loader;
    import flash.display.LoaderInfo;
    import flash.events.Event;
    import flash.events.EventDispatcher;
    import flash.events.MediaEvent;
    import flash.filesystem.File;
    import flash.filesystem.FileMode;
    import flash.filesystem.FileStream;
    import flash.media.CameraRoll;
    import flash.media.CameraUI;
    import flash.media.MediaPromise;
    import flash.media.MediaType;
    import flash.utils.ByteArray;

    import mx.events.DynamicEvent;
    import mx.graphics.codec.JPEGEncoder;

    [Event(name = "fileReady", type = "events.CameraEvent")]
    public class CameraUtil extends EventDispatcher
    {
        protected var camera:CameraUI;
        protected var loader:Loader;
        public var file:File;

        public function CameraUtil()
        {
            if (CameraUI.isSupported)
            {
                camera = new CameraUI();
                camera.addEventListener(MediaEvent.COMPLETE, mediaEventComplete);
            }
        }

        public function takePicture():void
        {
            if (camera)
                camera.launch(MediaType.IMAGE);
        }

        protected function mediaEventComplete(event:MediaEvent):void
        {
            var mediaPromise:MediaPromise = event.data;
            if (mediaPromise.file == null)
            {
                // For iOS we need to load with a Loader first
                loader = new Loader();
                loader.contentLoaderInfo.addEventListener(Event.COMPLETE, loaderCompleted);
                loader.loadFilePromise(mediaPromise);
                return;
            }
            else
            {
                // Android we can just dispatch the event that it's complete
                file = new File(mediaPromise.file.url);
                dispatchEvent(new CameraEvent(CameraEvent.FILE_READY, file));
            }
        }

        protected function loaderCompleted(event:Event):void
        {
            var loaderInfo:LoaderInfo = event.target as LoaderInfo;
            if (CameraRoll.supportsAddBitmapData)
            {
                var bitmapData:BitmapData = new BitmapData(loaderInfo.width, loaderInfo.height);
                bitmapData.draw(loaderInfo.loader);
                file = File.applicationStorageDirectory.resolvePath("receipt" + new Date().time + ".jpg");
                var stream:FileStream = new FileStream()
                stream.open(file, FileMode.WRITE);
                var j:JPEGEncoder = new JPEGEncoder();
                var bytes:ByteArray = j.encode(bitmapData);
                stream.writeBytes(bytes, 0, bytes.bytesAvailable);
                stream.close();
                trace(file.url);
                dispatchEvent(new CameraEvent(CameraEvent.FILE_READY, file));
            }
        }

    }
}

这篇关于使用适用于 iOS 的 Adob​​e Builder (flex) 拍照的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！