QRCodeScanner Class¶
Inherits: FrameFilter
Description¶
QRCodeScanner实现了二维码（QRCode）扫描与识别功能。
你需要首先调用 attachStreamer 将 FrameStreamer 连接到QRCodeScanner上，然后 FrameStreamer 的图像将被用来进行识别。你可以调用start/stop来开启/关闭扫描。start和stop是非常轻量的调用。
可以使用 FrameStreamer.peek 来获取一帧 Frame 。Frame中包含当前的camera图像和识别出的二维码字符串。
Constructor¶
- C: void easyar_QRCodeScanner__ctor(easyar_QRCodeScanner * * Return)¶
- C++11: QRCodeScanner()¶
- Traditional C++: QRCodeScanner()¶
- Java: public QRCodeScanner()¶
- Objective-C: + (easyar_QRCodeScanner *) create¶
- Swift (since EasyAR SDK 2.1.0): public convenience init()¶
attachStreamer¶
将 FrameStreamer 连接到QRCodeScanner。QRCodeScanner在有 FrameStreamer 连接之前不会开始扫描。
Attach null object 将会断开QRCodeScanner之前与 FrameStreamer 的连接。
- C: bool easyar_QRCodeScanner_attachStreamer(easyar_QRCodeScanner * This, easyar_FrameStreamer * obj)¶
- Traditional C++: bool attachStreamer(FrameStreamer * obj)¶
- Java: public native boolean attachStreamer(FrameStreamer obj)¶
- Objective-C: - (bool)attachStreamer:(easyar_FrameStreamer *)obj¶
- Swift (since EasyAR SDK 2.1.0): public override func attachStreamer(_ obj: FrameStreamer?) -> Bool¶
start¶
开始扫描。扫描过程在有 FrameStreamer 连接之前不会开始。
- C: bool easyar_QRCodeScanner_start(easyar_QRCodeScanner * This)¶
- C++11: bool start()¶
- Traditional C++: bool start()¶
- Java: public native boolean start()¶
- Objective-C: - (bool)start¶
- Swift (since EasyAR SDK 2.1.0): public override func start() -> Bool¶
stop¶
停止扫描。调用start来重新开始扫描。
- C: bool easyar_QRCodeScanner_stop(easyar_QRCodeScanner * This)¶
- C++11: bool stop()¶
- Traditional C++: bool stop()¶
- Java: public native boolean stop()¶
- Objective-C: - (bool)stop¶
- Swift (since EasyAR SDK 2.1.0): public override func stop() -> Bool¶