如何使用LWUIt VIdeoComponent捕获图像 [英] How to capture images using LWUIt VIdeoComponent

问题描述

我尝试使用MediaComponent，但是由于现在已弃用它，因此前进将不会是一件好事.我也不能让它重新调整大小到窗体上的全屏.我正在尝试使用VideoComponent捕获S40设备中的屏幕截图.我找不到如何正确实例化VideoComponent来捕获图像而不播放视频的方法.

I have tried using MediaComponent, but since it is now deprecated it wont be good moving forward. Also i was not able to get it to re-size to full screen on the form. I am trying to use VideoComponent to capture a screen shot in an S40 device. I cant find how to instantiate the VideoComponent properly for capturing an image and not playing a video.

推荐答案

您可以使用VideoComponent捕获图像.

You can use VideoComponent for capturing an image.

首先，要实例化VideoComponent，您需要创建一个本机对等体:

First, to instantiate the VideoComponent, you need to create a native peer:

VideoComponent videoComponent = VideoComponent.createVideoPeer("capture://video");
Player player = (Player) videoComponent.getNativePeer();
player.realize();
VideoControl videoControl = (VideoControl) player.getControl("VideoControl");

要捕获图像，您必须启动视频组件并使用Video Control的getSnapshot:

To capture the image, you have to start video component and use getSnapshot of Video Control:

videoComponent.start();
videoControl.getSnapshot(null);

如果要将视频组件的大小调整为全屏，则可以使用:

If you want to resize the video component to full screen you can use:

videoComponent.setFullScreen(false);

其他可能性是

videoComponent.setPreferredH(Display.getInstance().getDisplayHeight());
videoComponent.setPreferredW(Display.getInstance().getDisplayWidth());

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