BlackBerry Unable to close camera using EventInjector for touch screen

转载于 2011-04-11 12:49:00 发布 · 956 阅读

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#blackberry #permissions #testing #events #user

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本文介绍了一种在BlackBerry设备上使用EventInjector关闭相机应用的解决方案。通过在两次注入ESC键事件之间加入500毫秒的延迟，能够稳定地实现关闭相机的功能。此方法仅适用于post()方法。

http://supportforums.blackberry.com/t5/Java-Development/Unable-to-close-camera-using-EventInjector-for-touch-screen/m-p/785247#M143879

So I believe I have found a way to make this work consistently. My issue was not the permissions, as all along I was testing with the proper permissions set (or by prompting hte user to set them). The solution I found is to put a Thread.sleep(500) between the two injected ESCAPE events as follows:

EventInjector.KeyEvent inject = new EventInjector.KeyEvent(EventInjector.KeyEvent.KEY_DOWN, Characters.ESCAPE, 0);


                inject.post();


                sleep(500);


                inject.post();

I'm not exactly sure why this works, and I'm not saying that it's the right way to solve the problem, but it works for me. I tried shorter sleep times but 500ms was the shortest that I could get to consistently work. Also, this didn't work when I used the EventInjector.invokeEvent() method, only with the post() method. Hope this helps some people out.